commit d23d5af0d729cf66b93cea607f3f84a34b9fddfd Author: Andrzej Wójcik Date: Fri Apr 10 17:21:25 2020 +0200 Initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..7f94327 --- /dev/null +++ b/.gitignore @@ -0,0 +1,7 @@ +.DS_Store +/.build +/.swiftpm +/Packages +/*.xcodeproj +xcuserdata/ + diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..aa08301 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ +GNU GENERAL PUBLIC LICENSE +Version 3, 29 June 2007 + +Copyright (C) 2007 Free Software Foundation, Inc. +Everyone is permitted to copy and distribute verbatim copies +of this license document, but changing it is not allowed. + +Preamble + +The GNU General Public License is a free, copyleft license for +software and other kinds of works. + +The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. You can apply it to +your programs, too. + +When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +them if you wish), that you receive source code or can get it if you +want it, that you can change the software or use pieces of it in new +free programs, and that you know you can do these things. + +To protect your rights, we need to prevent others from denying you +these rights or asking you to surrender the rights. Therefore, you have +certain responsibilities if you distribute copies of the software, or if +you modify it: responsibilities to respect the freedom of others. + +For example, if you distribute copies of such a program, whether +gratis or for a fee, you must pass on to the recipients the same +freedoms that you received. You must make sure that they, too, receive +or can get the source code. And you must show them these terms so they +know their rights. + +Developers that use the GNU GPL protect your rights with two steps: +(1) assert copyright on the software, and (2) offer you this License +giving you legal permission to copy, distribute and/or modify it. + +For the developers' and authors' protection, the GPL clearly explains +that there is no warranty for this free software. For both users' and +authors' sake, the GPL requires that modified versions be marked as +changed, so that their problems will not be attributed erroneously to +authors of previous versions. + +Some devices are designed to deny users access to install or run +modified versions of the software inside them, although the manufacturer +can do so. This is fundamentally incompatible with the aim of +protecting users' freedom to change the software. The systematic +pattern of such abuse occurs in the area of products for individuals to +use, which is precisely where it is most unacceptable. Therefore, we +have designed this version of the GPL to prohibit the practice for those +products. If such problems arise substantially in other domains, we +stand ready to extend this provision to those domains in future versions +of the GPL, as needed to protect the freedom of users. + +Finally, every program is threatened constantly by software patents. +States should not allow patents to restrict development and use of +software on general-purpose computers, but in those that do, we wish to +avoid the special danger that patents applied to a free program could +make it effectively proprietary. To prevent this, the GPL assures that +patents cannot be used to render the program non-free. + +The precise terms and conditions for copying, distribution and +modification follow. + +TERMS AND CONDITIONS + +0. Definitions. + +"This License" refers to version 3 of the GNU General Public License. + +"Copyright" also means copyright-like laws that apply to other kinds of +works, such as semiconductor masks. + +"The Program" refers to any copyrightable work licensed under this +License. Each licensee is addressed as "you". "Licensees" and +"recipients" may be individuals or organizations. + +To "modify" a work means to copy from or adapt all or part of the work +in a fashion requiring copyright permission, other than the making of an +exact copy. The resulting work is called a "modified version" of the +earlier work or a work "based on" the earlier work. + +A "covered work" means either the unmodified Program or a work based +on the Program. + +To "propagate" a work means to do anything with it that, without +permission, would make you directly or secondarily liable for +infringement under applicable copyright law, except executing it on a +computer or modifying a private copy. Propagation includes copying, +distribution (with or without modification), making available to the +public, and in some countries other activities as well. + +To "convey" a work means any kind of propagation that enables other +parties to make or receive copies. Mere interaction with a user through +a computer network, with no transfer of a copy, is not conveying. + +An interactive user interface displays "Appropriate Legal Notices" +to the extent that it includes a convenient and prominently visible +feature that (1) displays an appropriate copyright notice, and (2) +tells the user that there is no warranty for the work (except to the +extent that warranties are provided), that licensees may convey the +work under this License, and how to view a copy of this License. If +the interface presents a list of user commands or options, such as a +menu, a prominent item in the list meets this criterion. + +1. Source Code. + +The "source code" for a work means the preferred form of the work +for making modifications to it. "Object code" means any non-source +form of a work. + +A "Standard Interface" means an interface that either is an official +standard defined by a recognized standards body, or, in the case of +interfaces specified for a particular programming language, one that +is widely used among developers working in that language. + +The "System Libraries" of an executable work include anything, other +than the work as a whole, that (a) is included in the normal form of +packaging a Major Component, but which is not part of that Major +Component, and (b) serves only to enable use of the work with that +Major Component, or to implement a Standard Interface for which an +implementation is available to the public in source code form. A +"Major Component", in this context, means a major essential component +(kernel, window system, and so on) of the specific operating system +(if any) on which the executable work runs, or a compiler used to +produce the work, or an object code interpreter used to run it. + +The "Corresponding Source" for a work in object code form means all +the source code needed to generate, install, and (for an executable +work) run the object code and to modify the work, including scripts to +control those activities. However, it does not include the work's +System Libraries, or general-purpose tools or generally available free +programs which are used unmodified in performing those activities but +which are not part of the work. For example, Corresponding Source +includes interface definition files associated with source files for +the work, and the source code for shared libraries and dynamically +linked subprograms that the work is specifically designed to require, +such as by intimate data communication or control flow between those +subprograms and other parts of the work. + +The Corresponding Source need not include anything that users +can regenerate automatically from other parts of the Corresponding +Source. + +The Corresponding Source for a work in source code form is that +same work. + +2. Basic Permissions. + +All rights granted under this License are granted for the term of +copyright on the Program, and are irrevocable provided the stated +conditions are met. This License explicitly affirms your unlimited +permission to run the unmodified Program. The output from running a +covered work is covered by this License only if the output, given its +content, constitutes a covered work. This License acknowledges your +rights of fair use or other equivalent, as provided by copyright law. + +You may make, run and propagate covered works that you do not +convey, without conditions so long as your license otherwise remains +in force. You may convey covered works to others for the sole purpose +of having them make modifications exclusively for you, or provide you +with facilities for running those works, provided that you comply with +the terms of this License in conveying all material for which you do +not control copyright. Those thus making or running the covered works +for you must do so exclusively on your behalf, under your direction +and control, on terms that prohibit them from making any copies of +your copyrighted material outside their relationship with you. + +Conveying under any other circumstances is permitted solely under +the conditions stated below. Sublicensing is not allowed; section 10 +makes it unnecessary. + +3. Protecting Users' Legal Rights From Anti-Circumvention Law. + +No covered work shall be deemed part of an effective technological +measure under any applicable law fulfilling obligations under article +11 of the WIPO copyright treaty adopted on 20 December 1996, or +similar laws prohibiting or restricting circumvention of such +measures. + +When you convey a covered work, you waive any legal power to forbid +circumvention of technological measures to the extent such circumvention +is effected by exercising rights under this License with respect to +the covered work, and you disclaim any intention to limit operation or +modification of the work as a means of enforcing, against the work's +users, your or third parties' legal rights to forbid circumvention of +technological measures. + +4. Conveying Verbatim Copies. + +You may convey verbatim copies of the Program's source code as you +receive it, in any medium, provided that you conspicuously and +appropriately publish on each copy an appropriate copyright notice; +keep intact all notices stating that this License and any +non-permissive terms added in accord with section 7 apply to the code; +keep intact all notices of the absence of any warranty; and give all +recipients a copy of this License along with the Program. + +You may charge any price or no price for each copy that you convey, +and you may offer support or warranty protection for a fee. + +5. Conveying Modified Source Versions. + +You may convey a work based on the Program, or the modifications to +produce it from the Program, in the form of source code under the +terms of section 4, provided that you also meet all of these conditions: + +a) The work must carry prominent notices stating that you modified +it, and giving a relevant date. + +b) The work must carry prominent notices stating that it is +released under this License and any conditions added under section +7. This requirement modifies the requirement in section 4 to +"keep intact all notices". + +c) You must license the entire work, as a whole, under this +License to anyone who comes into possession of a copy. This +License will therefore apply, along with any applicable section 7 +additional terms, to the whole of the work, and all its parts, +regardless of how they are packaged. This License gives no +permission to license the work in any other way, but it does not +invalidate such permission if you have separately received it. + +d) If the work has interactive user interfaces, each must display +Appropriate Legal Notices; however, if the Program has interactive +interfaces that do not display Appropriate Legal Notices, your +work need not make them do so. + +A compilation of a covered work with other separate and independent +works, which are not by their nature extensions of the covered work, +and which are not combined with it such as to form a larger program, +in or on a volume of a storage or distribution medium, is called an +"aggregate" if the compilation and its resulting copyright are not +used to limit the access or legal rights of the compilation's users +beyond what the individual works permit. Inclusion of a covered work +in an aggregate does not cause this License to apply to the other +parts of the aggregate. + +6. Conveying Non-Source Forms. + +You may convey a covered work in object code form under the terms +of sections 4 and 5, provided that you also convey the +machine-readable Corresponding Source under the terms of this License, +in one of these ways: + +a) Convey the object code in, or embodied in, a physical product +(including a physical distribution medium), accompanied by the +Corresponding Source fixed on a durable physical medium +customarily used for software interchange. + +b) Convey the object code in, or embodied in, a physical product +(including a physical distribution medium), accompanied by a +written offer, valid for at least three years and valid for as +long as you offer spare parts or customer support for that product +model, to give anyone who possesses the object code either (1) a +copy of the Corresponding Source for all the software in the +product that is covered by this License, on a durable physical +medium customarily used for software interchange, for a price no +more than your reasonable cost of physically performing this +conveying of source, or (2) access to copy the +Corresponding Source from a network server at no charge. + +c) Convey individual copies of the object code with a copy of the +written offer to provide the Corresponding Source. This +alternative is allowed only occasionally and noncommercially, and +only if you received the object code with such an offer, in accord +with subsection 6b. + +d) Convey the object code by offering access from a designated +place (gratis or for a charge), and offer equivalent access to the +Corresponding Source in the same way through the same place at no +further charge. You need not require recipients to copy the +Corresponding Source along with the object code. If the place to +copy the object code is a network server, the Corresponding Source +may be on a different server (operated by you or a third party) +that supports equivalent copying facilities, provided you maintain +clear directions next to the object code saying where to find the +Corresponding Source. Regardless of what server hosts the +Corresponding Source, you remain obligated to ensure that it is +available for as long as needed to satisfy these requirements. + +e) Convey the object code using peer-to-peer transmission, provided +you inform other peers where the object code and Corresponding +Source of the work are being offered to the general public at no +charge under subsection 6d. + +A separable portion of the object code, whose source code is excluded +from the Corresponding Source as a System Library, need not be +included in conveying the object code work. + +A "User Product" is either (1) a "consumer product", which means any +tangible personal property which is normally used for personal, family, +or household purposes, or (2) anything designed or sold for incorporation +into a dwelling. In determining whether a product is a consumer product, +doubtful cases shall be resolved in favor of coverage. For a particular +product received by a particular user, "normally used" refers to a +typical or common use of that class of product, regardless of the status +of the particular user or of the way in which the particular user +actually uses, or expects or is expected to use, the product. A product +is a consumer product regardless of whether the product has substantial +commercial, industrial or non-consumer uses, unless such uses represent +the only significant mode of use of the product. + +"Installation Information" for a User Product means any methods, +procedures, authorization keys, or other information required to install +and execute modified versions of a covered work in that User Product from +a modified version of its Corresponding Source. The information must +suffice to ensure that the continued functioning of the modified object +code is in no case prevented or interfered with solely because +modification has been made. + +If you convey an object code work under this section in, or with, or +specifically for use in, a User Product, and the conveying occurs as +part of a transaction in which the right of possession and use of the +User Product is transferred to the recipient in perpetuity or for a +fixed term (regardless of how the transaction is characterized), the +Corresponding Source conveyed under this section must be accompanied +by the Installation Information. But this requirement does not apply +if neither you nor any third party retains the ability to install +modified object code on the User Product (for example, the work has +been installed in ROM). + +The requirement to provide Installation Information does not include a +requirement to continue to provide support service, warranty, or updates +for a work that has been modified or installed by the recipient, or for +the User Product in which it has been modified or installed. Access to a +network may be denied when the modification itself materially and +adversely affects the operation of the network or violates the rules and +protocols for communication across the network. + +Corresponding Source conveyed, and Installation Information provided, +in accord with this section must be in a format that is publicly +documented (and with an implementation available to the public in +source code form), and must require no special password or key for +unpacking, reading or copying. + +7. Additional Terms. + +"Additional permissions" are terms that supplement the terms of this +License by making exceptions from one or more of its conditions. +Additional permissions that are applicable to the entire Program shall +be treated as though they were included in this License, to the extent +that they are valid under applicable law. If additional permissions +apply only to part of the Program, that part may be used separately +under those permissions, but the entire Program remains governed by +this License without regard to the additional permissions. + +When you convey a copy of a covered work, you may at your option +remove any additional permissions from that copy, or from any part of +it. (Additional permissions may be written to require their own +removal in certain cases when you modify the work.) You may place +additional permissions on material, added by you to a covered work, +for which you have or can give appropriate copyright permission. + +Notwithstanding any other provision of this License, for material you +add to a covered work, you may (if authorized by the copyright holders of +that material) supplement the terms of this License with terms: + +a) Disclaiming warranty or limiting liability differently from the +terms of sections 15 and 16 of this License; or + +b) Requiring preservation of specified reasonable legal notices or +author attributions in that material or in the Appropriate Legal +Notices displayed by works containing it; or + +c) Prohibiting misrepresentation of the origin of that material, or +requiring that modified versions of such material be marked in +reasonable ways as different from the original version; or + +d) Limiting the use for publicity purposes of names of licensors or +authors of the material; or + +e) Declining to grant rights under trademark law for use of some +trade names, trademarks, or service marks; or + +f) Requiring indemnification of licensors and authors of that +material by anyone who conveys the material (or modified versions of +it) with contractual assumptions of liability to the recipient, for +any liability that these contractual assumptions directly impose on +those licensors and authors. + +All other non-permissive additional terms are considered "further +restrictions" within the meaning of section 10. If the Program as you +received it, or any part of it, contains a notice stating that it is +governed by this License along with a term that is a further +restriction, you may remove that term. If a license document contains +a further restriction but permits relicensing or conveying under this +License, you may add to a covered work material governed by the terms +of that license document, provided that the further restriction does +not survive such relicensing or conveying. + +If you add terms to a covered work in accord with this section, you +must place, in the relevant source files, a statement of the +additional terms that apply to those files, or a notice indicating +where to find the applicable terms. + +Additional terms, permissive or non-permissive, may be stated in the +form of a separately written license, or stated as exceptions; +the above requirements apply either way. + +8. Termination. + +You may not propagate or modify a covered work except as expressly +provided under this License. Any attempt otherwise to propagate or +modify it is void, and will automatically terminate your rights under +this License (including any patent licenses granted under the third +paragraph of section 11). + +However, if you cease all violation of this License, then your +license from a particular copyright holder is reinstated (a) +provisionally, unless and until the copyright holder explicitly and +finally terminates your license, and (b) permanently, if the copyright +holder fails to notify you of the violation by some reasonable means +prior to 60 days after the cessation. + +Moreover, your license from a particular copyright holder is +reinstated permanently if the copyright holder notifies you of the +violation by some reasonable means, this is the first time you have +received notice of violation of this License (for any work) from that +copyright holder, and you cure the violation prior to 30 days after +your receipt of the notice. + +Termination of your rights under this section does not terminate the +licenses of parties who have received copies or rights from you under +this License. If your rights have been terminated and not permanently +reinstated, you do not qualify to receive new licenses for the same +material under section 10. + +9. Acceptance Not Required for Having Copies. + +You are not required to accept this License in order to receive or +run a copy of the Program. Ancillary propagation of a covered work +occurring solely as a consequence of using peer-to-peer transmission +to receive a copy likewise does not require acceptance. However, +nothing other than this License grants you permission to propagate or +modify any covered work. These actions infringe copyright if you do +not accept this License. Therefore, by modifying or propagating a +covered work, you indicate your acceptance of this License to do so. + +10. Automatic Licensing of Downstream Recipients. + +Each time you convey a covered work, the recipient automatically +receives a license from the original licensors, to run, modify and +propagate that work, subject to this License. You are not responsible +for enforcing compliance by third parties with this License. + +An "entity transaction" is a transaction transferring control of an +organization, or substantially all assets of one, or subdividing an +organization, or merging organizations. If propagation of a covered +work results from an entity transaction, each party to that +transaction who receives a copy of the work also receives whatever +licenses to the work the party's predecessor in interest had or could +give under the previous paragraph, plus a right to possession of the +Corresponding Source of the work from the predecessor in interest, if +the predecessor has it or can get it with reasonable efforts. + +You may not impose any further restrictions on the exercise of the +rights granted or affirmed under this License. For example, you may +not impose a license fee, royalty, or other charge for exercise of +rights granted under this License, and you may not initiate litigation +(including a cross-claim or counterclaim in a lawsuit) alleging that +any patent claim is infringed by making, using, selling, offering for +sale, or importing the Program or any portion of it. + +11. Patents. + +A "contributor" is a copyright holder who authorizes use under this +License of the Program or a work on which the Program is based. The +work thus licensed is called the contributor's "contributor version". + +A contributor's "essential patent claims" are all patent claims +owned or controlled by the contributor, whether already acquired or +hereafter acquired, that would be infringed by some manner, permitted +by this License, of making, using, or selling its contributor version, +but do not include claims that would be infringed only as a +consequence of further modification of the contributor version. For +purposes of this definition, "control" includes the right to grant +patent sublicenses in a manner consistent with the requirements of +this License. + +Each contributor grants you a non-exclusive, worldwide, royalty-free +patent license under the contributor's essential patent claims, to +make, use, sell, offer for sale, import and otherwise run, modify and +propagate the contents of its contributor version. + +In the following three paragraphs, a "patent license" is any express +agreement or commitment, however denominated, not to enforce a patent +(such as an express permission to practice a patent or covenant not to +sue for patent infringement). To "grant" such a patent license to a +party means to make such an agreement or commitment not to enforce a +patent against the party. + +If you convey a covered work, knowingly relying on a patent license, +and the Corresponding Source of the work is not available for anyone +to copy, free of charge and under the terms of this License, through a +publicly available network server or other readily accessible means, +then you must either (1) cause the Corresponding Source to be so +available, or (2) arrange to deprive yourself of the benefit of the +patent license for this particular work, or (3) arrange, in a manner +consistent with the requirements of this License, to extend the patent +license to downstream recipients. "Knowingly relying" means you have +actual knowledge that, but for the patent license, your conveying the +covered work in a country, or your recipient's use of the covered work +in a country, would infringe one or more identifiable patents in that +country that you have reason to believe are valid. + +If, pursuant to or in connection with a single transaction or +arrangement, you convey, or propagate by procuring conveyance of, a +covered work, and grant a patent license to some of the parties +receiving the covered work authorizing them to use, propagate, modify +or convey a specific copy of the covered work, then the patent license +you grant is automatically extended to all recipients of the covered +work and works based on it. + +A patent license is "discriminatory" if it does not include within +the scope of its coverage, prohibits the exercise of, or is +conditioned on the non-exercise of one or more of the rights that are +specifically granted under this License. You may not convey a covered +work if you are a party to an arrangement with a third party that is +in the business of distributing software, under which you make payment +to the third party based on the extent of your activity of conveying +the work, and under which the third party grants, to any of the +parties who would receive the covered work from you, a discriminatory +patent license (a) in connection with copies of the covered work +conveyed by you (or copies made from those copies), or (b) primarily +for and in connection with specific products or compilations that +contain the covered work, unless you entered into that arrangement, +or that patent license was granted, prior to 28 March 2007. + +Nothing in this License shall be construed as excluding or limiting +any implied license or other defenses to infringement that may +otherwise be available to you under applicable patent law. + +12. No Surrender of Others' Freedom. + +If conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot convey a +covered work so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you may +not convey it at all. For example, if you agree to terms that obligate you +to collect a royalty for further conveying from those to whom you convey +the Program, the only way you could satisfy both those terms and this +License would be to refrain entirely from conveying the Program. + +13. Use with the GNU Affero General Public License. + +Notwithstanding any other provision of this License, you have +permission to link or combine any covered work with a work licensed +under version 3 of the GNU Affero General Public License into a single +combined work, and to convey the resulting work. The terms of this +License will continue to apply to the part which is the covered work, +but the special requirements of the GNU Affero General Public License, +section 13, concerning interaction through a network will apply to the +combination as such. + +14. Revised Versions of this License. + +The Free Software Foundation may publish revised and/or new versions of +the GNU General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the +Program specifies that a certain numbered version of the GNU General +Public License "or any later version" applies to it, you have the +option of following the terms and conditions either of that numbered +version or of any later version published by the Free Software +Foundation. If the Program does not specify a version number of the +GNU General Public License, you may choose any version ever published +by the Free Software Foundation. + +If the Program specifies that a proxy can decide which future +versions of the GNU General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. + +Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + +15. Disclaimer of Warranty. + +THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + +16. Limitation of Liability. + +IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + +17. Interpretation of Sections 15 and 16. + +If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + +END OF TERMS AND CONDITIONS + +How to Apply These Terms to Your New Programs + +If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + +To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + +Copyright (C) + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + +If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) +This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. +This is free software, and you are welcome to redistribute it +under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + +You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + +The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Package.swift b/Package.swift new file mode 100644 index 0000000..348597c --- /dev/null +++ b/Package.swift @@ -0,0 +1,38 @@ +// swift-tools-version:5.2 +// The swift-tools-version declares the minimum version of Swift required to build this package. + +import PackageDescription + +let package = Package( + name: "libsignal", + platforms: [.iOS(.v11), .macOS(.v10_12)], + products: [ + // Products define the executables and libraries produced by a package, and make them visible to other packages. + .library( + name: "libsignal", + targets: ["libsignal"]), + ], + dependencies: [ + // Dependencies declare other packages that this package depends on. + // .package(url: /* package url */, from: "1.0.0"), + ], + targets: [ + // Targets are the basic building blocks of a package. A target can define a module or a test suite. + // Targets can depend on other targets in this package, and on products in packages which this package depends on. + .target( + name: "libsignal", + dependencies: [], + publicHeadersPath: "includes", + cSettings: [ + .headerSearchPath("includes"), + .headerSearchPath("curve25519"), + .headerSearchPath("curve25519/ed25519"), + .headerSearchPath("curve25519/ed25519/additions"), + .headerSearchPath("curve25519/ed25519/additions/generalized"), + .headerSearchPath("curve25519/ed25519/nacl_includes"), + .headerSearchPath("curve25519/ed25519/nacl_sha512"), + .headerSearchPath("curve25519/ed25519/tests"), + ] + ) + ] +) diff --git a/README.md b/README.md new file mode 100644 index 0000000..ce88f0a --- /dev/null +++ b/README.md @@ -0,0 +1,7 @@ +

+ libsignal +

+ +# What it is + +This repository contains a modified version of [libsignal](https://github.com/signalapp/libsignal-protocol-c) library wrapped in Swift package for easier usage in Swift-based projects. diff --git a/Sources/libsignal/File.h b/Sources/libsignal/File.h new file mode 100644 index 0000000..eca72fa --- /dev/null +++ b/Sources/libsignal/File.h @@ -0,0 +1,13 @@ +// +// File.h +// +// +// Created by Andrzej Wójcik on 10/04/2020. +// + +#ifndef File_h +#define File_h + +#include + +#endif /* File_h */ diff --git a/Sources/libsignal/FingerprintProtocol.pb-c.c b/Sources/libsignal/FingerprintProtocol.pb-c.c new file mode 100755 index 0000000..421ee2f --- /dev/null +++ b/Sources/libsignal/FingerprintProtocol.pb-c.c @@ -0,0 +1,210 @@ +/* Generated by the protocol buffer compiler. DO NOT EDIT! */ +/* Generated from: FingerprintProtocol.proto */ + +/* Do not generate deprecated warnings for self */ +#ifndef PROTOBUF_C__NO_DEPRECATED +#define PROTOBUF_C__NO_DEPRECATED +#endif + +#include "FingerprintProtocol.pb-c.h" +void textsecure__logical_fingerprint__init + (Textsecure__LogicalFingerprint *message) +{ + static Textsecure__LogicalFingerprint init_value = TEXTSECURE__LOGICAL_FINGERPRINT__INIT; + *message = init_value; +} +size_t textsecure__logical_fingerprint__get_packed_size + (const Textsecure__LogicalFingerprint *message) +{ + assert(message->base.descriptor == &textsecure__logical_fingerprint__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__logical_fingerprint__pack + (const Textsecure__LogicalFingerprint *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__logical_fingerprint__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__logical_fingerprint__pack_to_buffer + (const Textsecure__LogicalFingerprint *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__logical_fingerprint__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__LogicalFingerprint * + textsecure__logical_fingerprint__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__LogicalFingerprint *) + protobuf_c_message_unpack (&textsecure__logical_fingerprint__descriptor, + allocator, len, data); +} +void textsecure__logical_fingerprint__free_unpacked + (Textsecure__LogicalFingerprint *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__logical_fingerprint__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__combined_fingerprints__init + (Textsecure__CombinedFingerprints *message) +{ + static Textsecure__CombinedFingerprints init_value = TEXTSECURE__COMBINED_FINGERPRINTS__INIT; + *message = init_value; +} +size_t textsecure__combined_fingerprints__get_packed_size + (const Textsecure__CombinedFingerprints *message) +{ + assert(message->base.descriptor == &textsecure__combined_fingerprints__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__combined_fingerprints__pack + (const Textsecure__CombinedFingerprints *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__combined_fingerprints__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__combined_fingerprints__pack_to_buffer + (const Textsecure__CombinedFingerprints *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__combined_fingerprints__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__CombinedFingerprints * + textsecure__combined_fingerprints__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__CombinedFingerprints *) + protobuf_c_message_unpack (&textsecure__combined_fingerprints__descriptor, + allocator, len, data); +} +void textsecure__combined_fingerprints__free_unpacked + (Textsecure__CombinedFingerprints *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__combined_fingerprints__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +static const ProtobufCFieldDescriptor textsecure__logical_fingerprint__field_descriptors[2] = +{ + { + "content", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__LogicalFingerprint, has_content), + offsetof(Textsecure__LogicalFingerprint, content), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "identifier", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__LogicalFingerprint, has_identifier), + offsetof(Textsecure__LogicalFingerprint, identifier), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__logical_fingerprint__field_indices_by_name[] = { + 0, /* field[0] = content */ + 1, /* field[1] = identifier */ +}; +static const ProtobufCIntRange textsecure__logical_fingerprint__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 2 } +}; +const ProtobufCMessageDescriptor textsecure__logical_fingerprint__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.LogicalFingerprint", + "LogicalFingerprint", + "Textsecure__LogicalFingerprint", + "textsecure", + sizeof(Textsecure__LogicalFingerprint), + 2, + textsecure__logical_fingerprint__field_descriptors, + textsecure__logical_fingerprint__field_indices_by_name, + 1, textsecure__logical_fingerprint__number_ranges, + (ProtobufCMessageInit) textsecure__logical_fingerprint__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__combined_fingerprints__field_descriptors[3] = +{ + { + "version", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__CombinedFingerprints, has_version), + offsetof(Textsecure__CombinedFingerprints, version), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "localFingerprint", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_MESSAGE, + 0, /* quantifier_offset */ + offsetof(Textsecure__CombinedFingerprints, localfingerprint), + &textsecure__logical_fingerprint__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "remoteFingerprint", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_MESSAGE, + 0, /* quantifier_offset */ + offsetof(Textsecure__CombinedFingerprints, remotefingerprint), + &textsecure__logical_fingerprint__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__combined_fingerprints__field_indices_by_name[] = { + 1, /* field[1] = localFingerprint */ + 2, /* field[2] = remoteFingerprint */ + 0, /* field[0] = version */ +}; +static const ProtobufCIntRange textsecure__combined_fingerprints__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 3 } +}; +const ProtobufCMessageDescriptor textsecure__combined_fingerprints__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.CombinedFingerprints", + "CombinedFingerprints", + "Textsecure__CombinedFingerprints", + "textsecure", + sizeof(Textsecure__CombinedFingerprints), + 3, + textsecure__combined_fingerprints__field_descriptors, + textsecure__combined_fingerprints__field_indices_by_name, + 1, textsecure__combined_fingerprints__number_ranges, + (ProtobufCMessageInit) textsecure__combined_fingerprints__init, + NULL,NULL,NULL /* reserved[123] */ +}; diff --git a/Sources/libsignal/FingerprintProtocol.pb-c.h b/Sources/libsignal/FingerprintProtocol.pb-c.h new file mode 100755 index 0000000..dde27d7 --- /dev/null +++ b/Sources/libsignal/FingerprintProtocol.pb-c.h @@ -0,0 +1,114 @@ +/* Generated by the protocol buffer compiler. DO NOT EDIT! */ +/* Generated from: FingerprintProtocol.proto */ + +#ifndef PROTOBUF_C_FingerprintProtocol_2eproto__INCLUDED +#define PROTOBUF_C_FingerprintProtocol_2eproto__INCLUDED + +#include "protobuf-c/protobuf-c.h" + +PROTOBUF_C__BEGIN_DECLS + +#if PROTOBUF_C_VERSION_NUMBER < 1000000 +# error This file was generated by a newer version of protoc-c which is incompatible with your libprotobuf-c headers. Please update your headers. +#elif 1002001 < PROTOBUF_C_MIN_COMPILER_VERSION +# error This file was generated by an older version of protoc-c which is incompatible with your libprotobuf-c headers. Please regenerate this file with a newer version of protoc-c. +#endif + + +typedef struct _Textsecure__LogicalFingerprint Textsecure__LogicalFingerprint; +typedef struct _Textsecure__CombinedFingerprints Textsecure__CombinedFingerprints; + + +/* --- enums --- */ + + +/* --- messages --- */ + +struct _Textsecure__LogicalFingerprint +{ + ProtobufCMessage base; + protobuf_c_boolean has_content; + ProtobufCBinaryData content; + /* + * Version 0 + */ + protobuf_c_boolean has_identifier; + ProtobufCBinaryData identifier; +}; +#define TEXTSECURE__LOGICAL_FINGERPRINT__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__logical_fingerprint__descriptor) \ + , 0,{0,NULL}, 0,{0,NULL} } + + +struct _Textsecure__CombinedFingerprints +{ + ProtobufCMessage base; + protobuf_c_boolean has_version; + uint32_t version; + Textsecure__LogicalFingerprint *localfingerprint; + Textsecure__LogicalFingerprint *remotefingerprint; +}; +#define TEXTSECURE__COMBINED_FINGERPRINTS__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__combined_fingerprints__descriptor) \ + , 0,0, NULL, NULL } + + +/* Textsecure__LogicalFingerprint methods */ +void textsecure__logical_fingerprint__init + (Textsecure__LogicalFingerprint *message); +size_t textsecure__logical_fingerprint__get_packed_size + (const Textsecure__LogicalFingerprint *message); +size_t textsecure__logical_fingerprint__pack + (const Textsecure__LogicalFingerprint *message, + uint8_t *out); +size_t textsecure__logical_fingerprint__pack_to_buffer + (const Textsecure__LogicalFingerprint *message, + ProtobufCBuffer *buffer); +Textsecure__LogicalFingerprint * + textsecure__logical_fingerprint__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__logical_fingerprint__free_unpacked + (Textsecure__LogicalFingerprint *message, + ProtobufCAllocator *allocator); +/* Textsecure__CombinedFingerprints methods */ +void textsecure__combined_fingerprints__init + (Textsecure__CombinedFingerprints *message); +size_t textsecure__combined_fingerprints__get_packed_size + (const Textsecure__CombinedFingerprints *message); +size_t textsecure__combined_fingerprints__pack + (const Textsecure__CombinedFingerprints *message, + uint8_t *out); +size_t textsecure__combined_fingerprints__pack_to_buffer + (const Textsecure__CombinedFingerprints *message, + ProtobufCBuffer *buffer); +Textsecure__CombinedFingerprints * + textsecure__combined_fingerprints__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__combined_fingerprints__free_unpacked + (Textsecure__CombinedFingerprints *message, + ProtobufCAllocator *allocator); +/* --- per-message closures --- */ + +typedef void (*Textsecure__LogicalFingerprint_Closure) + (const Textsecure__LogicalFingerprint *message, + void *closure_data); +typedef void (*Textsecure__CombinedFingerprints_Closure) + (const Textsecure__CombinedFingerprints *message, + void *closure_data); + +/* --- services --- */ + + +/* --- descriptors --- */ + +extern const ProtobufCMessageDescriptor textsecure__logical_fingerprint__descriptor; +extern const ProtobufCMessageDescriptor textsecure__combined_fingerprints__descriptor; + +PROTOBUF_C__END_DECLS + + +#endif /* PROTOBUF_C_FingerprintProtocol_2eproto__INCLUDED */ diff --git a/Sources/libsignal/LICENSE b/Sources/libsignal/LICENSE new file mode 100755 index 0000000..94a0453 --- /dev/null +++ b/Sources/libsignal/LICENSE @@ -0,0 +1,621 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +them if you wish), that you receive source code or can get it if you +want it, that you can change the software or use pieces of it in new +free programs, and that you know you can do these things. + + To protect your rights, we need to prevent others from denying you +these rights or asking you to surrender the rights. Therefore, you have +certain responsibilities if you distribute copies of the software, or if +you modify it: responsibilities to respect the freedom of others. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must pass on to the recipients the same +freedoms that you received. You must make sure that they, too, receive +or can get the source code. And you must show them these terms so they +know their rights. + + Developers that use the GNU GPL protect your rights with two steps: +(1) assert copyright on the software, and (2) offer you this License +giving you legal permission to copy, distribute and/or modify it. + + For the developers' and authors' protection, the GPL clearly explains +that there is no warranty for this free software. For both users' and +authors' sake, the GPL requires that modified versions be marked as +changed, so that their problems will not be attributed erroneously to +authors of previous versions. + + Some devices are designed to deny users access to install or run +modified versions of the software inside them, although the manufacturer +can do so. This is fundamentally incompatible with the aim of +protecting users' freedom to change the software. The systematic +pattern of such abuse occurs in the area of products for individuals to +use, which is precisely where it is most unacceptable. Therefore, we +have designed this version of the GPL to prohibit the practice for those +products. If such problems arise substantially in other domains, we +stand ready to extend this provision to those domains in future versions +of the GPL, as needed to protect the freedom of users. + + Finally, every program is threatened constantly by software patents. +States should not allow patents to restrict development and use of +software on general-purpose computers, but in those that do, we wish to +avoid the special danger that patents applied to a free program could +make it effectively proprietary. To prevent this, the GPL assures that +patents cannot be used to render the program non-free. + + The precise terms and conditions for copying, distribution and +modification follow. + + TERMS AND CONDITIONS + + 0. Definitions. + + "This License" refers to version 3 of the GNU General Public License. + + "Copyright" also means copyright-like laws that apply to other kinds of +works, such as semiconductor masks. + + "The Program" refers to any copyrightable work licensed under this +License. Each licensee is addressed as "you". "Licensees" and +"recipients" may be individuals or organizations. + + To "modify" a work means to copy from or adapt all or part of the work +in a fashion requiring copyright permission, other than the making of an +exact copy. The resulting work is called a "modified version" of the +earlier work or a work "based on" the earlier work. + + A "covered work" means either the unmodified Program or a work based +on the Program. + + To "propagate" a work means to do anything with it that, without +permission, would make you directly or secondarily liable for +infringement under applicable copyright law, except executing it on a +computer or modifying a private copy. Propagation includes copying, +distribution (with or without modification), making available to the +public, and in some countries other activities as well. + + To "convey" a work means any kind of propagation that enables other +parties to make or receive copies. Mere interaction with a user through +a computer network, with no transfer of a copy, is not conveying. + + An interactive user interface displays "Appropriate Legal Notices" +to the extent that it includes a convenient and prominently visible +feature that (1) displays an appropriate copyright notice, and (2) +tells the user that there is no warranty for the work (except to the +extent that warranties are provided), that licensees may convey the +work under this License, and how to view a copy of this License. If +the interface presents a list of user commands or options, such as a +menu, a prominent item in the list meets this criterion. + + 1. Source Code. + + The "source code" for a work means the preferred form of the work +for making modifications to it. "Object code" means any non-source +form of a work. + + A "Standard Interface" means an interface that either is an official +standard defined by a recognized standards body, or, in the case of +interfaces specified for a particular programming language, one that +is widely used among developers working in that language. + + The "System Libraries" of an executable work include anything, other +than the work as a whole, that (a) is included in the normal form of +packaging a Major Component, but which is not part of that Major +Component, and (b) serves only to enable use of the work with that +Major Component, or to implement a Standard Interface for which an +implementation is available to the public in source code form. A +"Major Component", in this context, means a major essential component +(kernel, window system, and so on) of the specific operating system +(if any) on which the executable work runs, or a compiler used to +produce the work, or an object code interpreter used to run it. + + The "Corresponding Source" for a work in object code form means all +the source code needed to generate, install, and (for an executable +work) run the object code and to modify the work, including scripts to +control those activities. However, it does not include the work's +System Libraries, or general-purpose tools or generally available free +programs which are used unmodified in performing those activities but +which are not part of the work. For example, Corresponding Source +includes interface definition files associated with source files for +the work, and the source code for shared libraries and dynamically +linked subprograms that the work is specifically designed to require, +such as by intimate data communication or control flow between those +subprograms and other parts of the work. + + The Corresponding Source need not include anything that users +can regenerate automatically from other parts of the Corresponding +Source. + + The Corresponding Source for a work in source code form is that +same work. + + 2. Basic Permissions. + + All rights granted under this License are granted for the term of +copyright on the Program, and are irrevocable provided the stated +conditions are met. This License explicitly affirms your unlimited +permission to run the unmodified Program. The output from running a +covered work is covered by this License only if the output, given its +content, constitutes a covered work. This License acknowledges your +rights of fair use or other equivalent, as provided by copyright law. + + You may make, run and propagate covered works that you do not +convey, without conditions so long as your license otherwise remains +in force. You may convey covered works to others for the sole purpose +of having them make modifications exclusively for you, or provide you +with facilities for running those works, provided that you comply with +the terms of this License in conveying all material for which you do +not control copyright. Those thus making or running the covered works +for you must do so exclusively on your behalf, under your direction +and control, on terms that prohibit them from making any copies of +your copyrighted material outside their relationship with you. + + Conveying under any other circumstances is permitted solely under +the conditions stated below. Sublicensing is not allowed; section 10 +makes it unnecessary. + + 3. Protecting Users' Legal Rights From Anti-Circumvention Law. + + No covered work shall be deemed part of an effective technological +measure under any applicable law fulfilling obligations under article +11 of the WIPO copyright treaty adopted on 20 December 1996, or +similar laws prohibiting or restricting circumvention of such +measures. + + When you convey a covered work, you waive any legal power to forbid +circumvention of technological measures to the extent such circumvention +is effected by exercising rights under this License with respect to +the covered work, and you disclaim any intention to limit operation or +modification of the work as a means of enforcing, against the work's +users, your or third parties' legal rights to forbid circumvention of +technological measures. + + 4. Conveying Verbatim Copies. + + You may convey verbatim copies of the Program's source code as you +receive it, in any medium, provided that you conspicuously and +appropriately publish on each copy an appropriate copyright notice; +keep intact all notices stating that this License and any +non-permissive terms added in accord with section 7 apply to the code; +keep intact all notices of the absence of any warranty; and give all +recipients a copy of this License along with the Program. + + You may charge any price or no price for each copy that you convey, +and you may offer support or warranty protection for a fee. + + 5. Conveying Modified Source Versions. + + You may convey a work based on the Program, or the modifications to +produce it from the Program, in the form of source code under the +terms of section 4, provided that you also meet all of these conditions: + + a) The work must carry prominent notices stating that you modified + it, and giving a relevant date. + + b) The work must carry prominent notices stating that it is + released under this License and any conditions added under section + 7. This requirement modifies the requirement in section 4 to + "keep intact all notices". + + c) You must license the entire work, as a whole, under this + License to anyone who comes into possession of a copy. This + License will therefore apply, along with any applicable section 7 + additional terms, to the whole of the work, and all its parts, + regardless of how they are packaged. This License gives no + permission to license the work in any other way, but it does not + invalidate such permission if you have separately received it. + + d) If the work has interactive user interfaces, each must display + Appropriate Legal Notices; however, if the Program has interactive + interfaces that do not display Appropriate Legal Notices, your + work need not make them do so. + + A compilation of a covered work with other separate and independent +works, which are not by their nature extensions of the covered work, +and which are not combined with it such as to form a larger program, +in or on a volume of a storage or distribution medium, is called an +"aggregate" if the compilation and its resulting copyright are not +used to limit the access or legal rights of the compilation's users +beyond what the individual works permit. Inclusion of a covered work +in an aggregate does not cause this License to apply to the other +parts of the aggregate. + + 6. Conveying Non-Source Forms. + + You may convey a covered work in object code form under the terms +of sections 4 and 5, provided that you also convey the +machine-readable Corresponding Source under the terms of this License, +in one of these ways: + + a) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by the + Corresponding Source fixed on a durable physical medium + customarily used for software interchange. + + b) Convey the object code in, or embodied in, a physical product + (including a physical distribution medium), accompanied by a + written offer, valid for at least three years and valid for as + long as you offer spare parts or customer support for that product + model, to give anyone who possesses the object code either (1) a + copy of the Corresponding Source for all the software in the + product that is covered by this License, on a durable physical + medium customarily used for software interchange, for a price no + more than your reasonable cost of physically performing this + conveying of source, or (2) access to copy the + Corresponding Source from a network server at no charge. + + c) Convey individual copies of the object code with a copy of the + written offer to provide the Corresponding Source. This + alternative is allowed only occasionally and noncommercially, and + only if you received the object code with such an offer, in accord + with subsection 6b. + + d) Convey the object code by offering access from a designated + place (gratis or for a charge), and offer equivalent access to the + Corresponding Source in the same way through the same place at no + further charge. You need not require recipients to copy the + Corresponding Source along with the object code. If the place to + copy the object code is a network server, the Corresponding Source + may be on a different server (operated by you or a third party) + that supports equivalent copying facilities, provided you maintain + clear directions next to the object code saying where to find the + Corresponding Source. Regardless of what server hosts the + Corresponding Source, you remain obligated to ensure that it is + available for as long as needed to satisfy these requirements. + + e) Convey the object code using peer-to-peer transmission, provided + you inform other peers where the object code and Corresponding + Source of the work are being offered to the general public at no + charge under subsection 6d. + + A separable portion of the object code, whose source code is excluded +from the Corresponding Source as a System Library, need not be +included in conveying the object code work. + + A "User Product" is either (1) a "consumer product", which means any +tangible personal property which is normally used for personal, family, +or household purposes, or (2) anything designed or sold for incorporation +into a dwelling. In determining whether a product is a consumer product, +doubtful cases shall be resolved in favor of coverage. For a particular +product received by a particular user, "normally used" refers to a +typical or common use of that class of product, regardless of the status +of the particular user or of the way in which the particular user +actually uses, or expects or is expected to use, the product. A product +is a consumer product regardless of whether the product has substantial +commercial, industrial or non-consumer uses, unless such uses represent +the only significant mode of use of the product. + + "Installation Information" for a User Product means any methods, +procedures, authorization keys, or other information required to install +and execute modified versions of a covered work in that User Product from +a modified version of its Corresponding Source. The information must +suffice to ensure that the continued functioning of the modified object +code is in no case prevented or interfered with solely because +modification has been made. + + If you convey an object code work under this section in, or with, or +specifically for use in, a User Product, and the conveying occurs as +part of a transaction in which the right of possession and use of the +User Product is transferred to the recipient in perpetuity or for a +fixed term (regardless of how the transaction is characterized), the +Corresponding Source conveyed under this section must be accompanied +by the Installation Information. But this requirement does not apply +if neither you nor any third party retains the ability to install +modified object code on the User Product (for example, the work has +been installed in ROM). + + The requirement to provide Installation Information does not include a +requirement to continue to provide support service, warranty, or updates +for a work that has been modified or installed by the recipient, or for +the User Product in which it has been modified or installed. Access to a +network may be denied when the modification itself materially and +adversely affects the operation of the network or violates the rules and +protocols for communication across the network. + + Corresponding Source conveyed, and Installation Information provided, +in accord with this section must be in a format that is publicly +documented (and with an implementation available to the public in +source code form), and must require no special password or key for +unpacking, reading or copying. + + 7. Additional Terms. + + "Additional permissions" are terms that supplement the terms of this +License by making exceptions from one or more of its conditions. +Additional permissions that are applicable to the entire Program shall +be treated as though they were included in this License, to the extent +that they are valid under applicable law. If additional permissions +apply only to part of the Program, that part may be used separately +under those permissions, but the entire Program remains governed by +this License without regard to the additional permissions. + + When you convey a copy of a covered work, you may at your option +remove any additional permissions from that copy, or from any part of +it. (Additional permissions may be written to require their own +removal in certain cases when you modify the work.) You may place +additional permissions on material, added by you to a covered work, +for which you have or can give appropriate copyright permission. + + Notwithstanding any other provision of this License, for material you +add to a covered work, you may (if authorized by the copyright holders of +that material) supplement the terms of this License with terms: + + a) Disclaiming warranty or limiting liability differently from the + terms of sections 15 and 16 of this License; or + + b) Requiring preservation of specified reasonable legal notices or + author attributions in that material or in the Appropriate Legal + Notices displayed by works containing it; or + + c) Prohibiting misrepresentation of the origin of that material, or + requiring that modified versions of such material be marked in + reasonable ways as different from the original version; or + + d) Limiting the use for publicity purposes of names of licensors or + authors of the material; or + + e) Declining to grant rights under trademark law for use of some + trade names, trademarks, or service marks; or + + f) Requiring indemnification of licensors and authors of that + material by anyone who conveys the material (or modified versions of + it) with contractual assumptions of liability to the recipient, for + any liability that these contractual assumptions directly impose on + those licensors and authors. + + All other non-permissive additional terms are considered "further +restrictions" within the meaning of section 10. If the Program as you +received it, or any part of it, contains a notice stating that it is +governed by this License along with a term that is a further +restriction, you may remove that term. If a license document contains +a further restriction but permits relicensing or conveying under this +License, you may add to a covered work material governed by the terms +of that license document, provided that the further restriction does +not survive such relicensing or conveying. + + If you add terms to a covered work in accord with this section, you +must place, in the relevant source files, a statement of the +additional terms that apply to those files, or a notice indicating +where to find the applicable terms. + + Additional terms, permissive or non-permissive, may be stated in the +form of a separately written license, or stated as exceptions; +the above requirements apply either way. + + 8. Termination. + + You may not propagate or modify a covered work except as expressly +provided under this License. Any attempt otherwise to propagate or +modify it is void, and will automatically terminate your rights under +this License (including any patent licenses granted under the third +paragraph of section 11). + + However, if you cease all violation of this License, then your +license from a particular copyright holder is reinstated (a) +provisionally, unless and until the copyright holder explicitly and +finally terminates your license, and (b) permanently, if the copyright +holder fails to notify you of the violation by some reasonable means +prior to 60 days after the cessation. + + Moreover, your license from a particular copyright holder is +reinstated permanently if the copyright holder notifies you of the +violation by some reasonable means, this is the first time you have +received notice of violation of this License (for any work) from that +copyright holder, and you cure the violation prior to 30 days after +your receipt of the notice. + + Termination of your rights under this section does not terminate the +licenses of parties who have received copies or rights from you under +this License. If your rights have been terminated and not permanently +reinstated, you do not qualify to receive new licenses for the same +material under section 10. + + 9. Acceptance Not Required for Having Copies. + + You are not required to accept this License in order to receive or +run a copy of the Program. Ancillary propagation of a covered work +occurring solely as a consequence of using peer-to-peer transmission +to receive a copy likewise does not require acceptance. However, +nothing other than this License grants you permission to propagate or +modify any covered work. These actions infringe copyright if you do +not accept this License. Therefore, by modifying or propagating a +covered work, you indicate your acceptance of this License to do so. + + 10. Automatic Licensing of Downstream Recipients. + + Each time you convey a covered work, the recipient automatically +receives a license from the original licensors, to run, modify and +propagate that work, subject to this License. You are not responsible +for enforcing compliance by third parties with this License. + + An "entity transaction" is a transaction transferring control of an +organization, or substantially all assets of one, or subdividing an +organization, or merging organizations. If propagation of a covered +work results from an entity transaction, each party to that +transaction who receives a copy of the work also receives whatever +licenses to the work the party's predecessor in interest had or could +give under the previous paragraph, plus a right to possession of the +Corresponding Source of the work from the predecessor in interest, if +the predecessor has it or can get it with reasonable efforts. + + You may not impose any further restrictions on the exercise of the +rights granted or affirmed under this License. For example, you may +not impose a license fee, royalty, or other charge for exercise of +rights granted under this License, and you may not initiate litigation +(including a cross-claim or counterclaim in a lawsuit) alleging that +any patent claim is infringed by making, using, selling, offering for +sale, or importing the Program or any portion of it. + + 11. Patents. + + A "contributor" is a copyright holder who authorizes use under this +License of the Program or a work on which the Program is based. The +work thus licensed is called the contributor's "contributor version". + + A contributor's "essential patent claims" are all patent claims +owned or controlled by the contributor, whether already acquired or +hereafter acquired, that would be infringed by some manner, permitted +by this License, of making, using, or selling its contributor version, +but do not include claims that would be infringed only as a +consequence of further modification of the contributor version. For +purposes of this definition, "control" includes the right to grant +patent sublicenses in a manner consistent with the requirements of +this License. + + Each contributor grants you a non-exclusive, worldwide, royalty-free +patent license under the contributor's essential patent claims, to +make, use, sell, offer for sale, import and otherwise run, modify and +propagate the contents of its contributor version. + + In the following three paragraphs, a "patent license" is any express +agreement or commitment, however denominated, not to enforce a patent +(such as an express permission to practice a patent or covenant not to +sue for patent infringement). To "grant" such a patent license to a +party means to make such an agreement or commitment not to enforce a +patent against the party. + + If you convey a covered work, knowingly relying on a patent license, +and the Corresponding Source of the work is not available for anyone +to copy, free of charge and under the terms of this License, through a +publicly available network server or other readily accessible means, +then you must either (1) cause the Corresponding Source to be so +available, or (2) arrange to deprive yourself of the benefit of the +patent license for this particular work, or (3) arrange, in a manner +consistent with the requirements of this License, to extend the patent +license to downstream recipients. "Knowingly relying" means you have +actual knowledge that, but for the patent license, your conveying the +covered work in a country, or your recipient's use of the covered work +in a country, would infringe one or more identifiable patents in that +country that you have reason to believe are valid. + + If, pursuant to or in connection with a single transaction or +arrangement, you convey, or propagate by procuring conveyance of, a +covered work, and grant a patent license to some of the parties +receiving the covered work authorizing them to use, propagate, modify +or convey a specific copy of the covered work, then the patent license +you grant is automatically extended to all recipients of the covered +work and works based on it. + + A patent license is "discriminatory" if it does not include within +the scope of its coverage, prohibits the exercise of, or is +conditioned on the non-exercise of one or more of the rights that are +specifically granted under this License. You may not convey a covered +work if you are a party to an arrangement with a third party that is +in the business of distributing software, under which you make payment +to the third party based on the extent of your activity of conveying +the work, and under which the third party grants, to any of the +parties who would receive the covered work from you, a discriminatory +patent license (a) in connection with copies of the covered work +conveyed by you (or copies made from those copies), or (b) primarily +for and in connection with specific products or compilations that +contain the covered work, unless you entered into that arrangement, +or that patent license was granted, prior to 28 March 2007. + + Nothing in this License shall be construed as excluding or limiting +any implied license or other defenses to infringement that may +otherwise be available to you under applicable patent law. + + 12. No Surrender of Others' Freedom. + + If conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot convey a +covered work so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you may +not convey it at all. For example, if you agree to terms that obligate you +to collect a royalty for further conveying from those to whom you convey +the Program, the only way you could satisfy both those terms and this +License would be to refrain entirely from conveying the Program. + + 13. Use with the GNU Affero General Public License. + + Notwithstanding any other provision of this License, you have +permission to link or combine any covered work with a work licensed +under version 3 of the GNU Affero General Public License into a single +combined work, and to convey the resulting work. The terms of this +License will continue to apply to the part which is the covered work, +but the special requirements of the GNU Affero General Public License, +section 13, concerning interaction through a network will apply to the +combination as such. + + 14. Revised Versions of this License. + + The Free Software Foundation may publish revised and/or new versions of +the GNU General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + + Each version is given a distinguishing version number. If the +Program specifies that a certain numbered version of the GNU General +Public License "or any later version" applies to it, you have the +option of following the terms and conditions either of that numbered +version or of any later version published by the Free Software +Foundation. If the Program does not specify a version number of the +GNU General Public License, you may choose any version ever published +by the Free Software Foundation. + + If the Program specifies that a proxy can decide which future +versions of the GNU General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. + + Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + + 15. Disclaimer of Warranty. + + THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS diff --git a/Sources/libsignal/LocalStorageProtocol.pb-c.c b/Sources/libsignal/LocalStorageProtocol.pb-c.c new file mode 100755 index 0000000..afe0171 --- /dev/null +++ b/Sources/libsignal/LocalStorageProtocol.pb-c.c @@ -0,0 +1,1462 @@ +/* Generated by the protocol buffer compiler. DO NOT EDIT! */ +/* Generated from: LocalStorageProtocol.proto */ + +/* Do not generate deprecated warnings for self */ +#ifndef PROTOBUF_C__NO_DEPRECATED +#define PROTOBUF_C__NO_DEPRECATED +#endif + +#include "LocalStorageProtocol.pb-c.h" +void textsecure__session_structure__chain__chain_key__init + (Textsecure__SessionStructure__Chain__ChainKey *message) +{ + static Textsecure__SessionStructure__Chain__ChainKey init_value = TEXTSECURE__SESSION_STRUCTURE__CHAIN__CHAIN_KEY__INIT; + *message = init_value; +} +void textsecure__session_structure__chain__message_key__init + (Textsecure__SessionStructure__Chain__MessageKey *message) +{ + static Textsecure__SessionStructure__Chain__MessageKey init_value = TEXTSECURE__SESSION_STRUCTURE__CHAIN__MESSAGE_KEY__INIT; + *message = init_value; +} +void textsecure__session_structure__chain__init + (Textsecure__SessionStructure__Chain *message) +{ + static Textsecure__SessionStructure__Chain init_value = TEXTSECURE__SESSION_STRUCTURE__CHAIN__INIT; + *message = init_value; +} +void textsecure__session_structure__pending_key_exchange__init + (Textsecure__SessionStructure__PendingKeyExchange *message) +{ + static Textsecure__SessionStructure__PendingKeyExchange init_value = TEXTSECURE__SESSION_STRUCTURE__PENDING_KEY_EXCHANGE__INIT; + *message = init_value; +} +void textsecure__session_structure__pending_pre_key__init + (Textsecure__SessionStructure__PendingPreKey *message) +{ + static Textsecure__SessionStructure__PendingPreKey init_value = TEXTSECURE__SESSION_STRUCTURE__PENDING_PRE_KEY__INIT; + *message = init_value; +} +void textsecure__session_structure__init + (Textsecure__SessionStructure *message) +{ + static Textsecure__SessionStructure init_value = TEXTSECURE__SESSION_STRUCTURE__INIT; + *message = init_value; +} +size_t textsecure__session_structure__get_packed_size + (const Textsecure__SessionStructure *message) +{ + assert(message->base.descriptor == &textsecure__session_structure__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__session_structure__pack + (const Textsecure__SessionStructure *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__session_structure__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__session_structure__pack_to_buffer + (const Textsecure__SessionStructure *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__session_structure__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__SessionStructure * + textsecure__session_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__SessionStructure *) + protobuf_c_message_unpack (&textsecure__session_structure__descriptor, + allocator, len, data); +} +void textsecure__session_structure__free_unpacked + (Textsecure__SessionStructure *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__session_structure__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__record_structure__init + (Textsecure__RecordStructure *message) +{ + static Textsecure__RecordStructure init_value = TEXTSECURE__RECORD_STRUCTURE__INIT; + *message = init_value; +} +size_t textsecure__record_structure__get_packed_size + (const Textsecure__RecordStructure *message) +{ + assert(message->base.descriptor == &textsecure__record_structure__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__record_structure__pack + (const Textsecure__RecordStructure *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__record_structure__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__record_structure__pack_to_buffer + (const Textsecure__RecordStructure *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__record_structure__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__RecordStructure * + textsecure__record_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__RecordStructure *) + protobuf_c_message_unpack (&textsecure__record_structure__descriptor, + allocator, len, data); +} +void textsecure__record_structure__free_unpacked + (Textsecure__RecordStructure *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__record_structure__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__pre_key_record_structure__init + (Textsecure__PreKeyRecordStructure *message) +{ + static Textsecure__PreKeyRecordStructure init_value = TEXTSECURE__PRE_KEY_RECORD_STRUCTURE__INIT; + *message = init_value; +} +size_t textsecure__pre_key_record_structure__get_packed_size + (const Textsecure__PreKeyRecordStructure *message) +{ + assert(message->base.descriptor == &textsecure__pre_key_record_structure__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__pre_key_record_structure__pack + (const Textsecure__PreKeyRecordStructure *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__pre_key_record_structure__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__pre_key_record_structure__pack_to_buffer + (const Textsecure__PreKeyRecordStructure *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__pre_key_record_structure__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__PreKeyRecordStructure * + textsecure__pre_key_record_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__PreKeyRecordStructure *) + protobuf_c_message_unpack (&textsecure__pre_key_record_structure__descriptor, + allocator, len, data); +} +void textsecure__pre_key_record_structure__free_unpacked + (Textsecure__PreKeyRecordStructure *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__pre_key_record_structure__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__signed_pre_key_record_structure__init + (Textsecure__SignedPreKeyRecordStructure *message) +{ + static Textsecure__SignedPreKeyRecordStructure init_value = TEXTSECURE__SIGNED_PRE_KEY_RECORD_STRUCTURE__INIT; + *message = init_value; +} +size_t textsecure__signed_pre_key_record_structure__get_packed_size + (const Textsecure__SignedPreKeyRecordStructure *message) +{ + assert(message->base.descriptor == &textsecure__signed_pre_key_record_structure__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__signed_pre_key_record_structure__pack + (const Textsecure__SignedPreKeyRecordStructure *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__signed_pre_key_record_structure__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__signed_pre_key_record_structure__pack_to_buffer + (const Textsecure__SignedPreKeyRecordStructure *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__signed_pre_key_record_structure__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__SignedPreKeyRecordStructure * + textsecure__signed_pre_key_record_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__SignedPreKeyRecordStructure *) + protobuf_c_message_unpack (&textsecure__signed_pre_key_record_structure__descriptor, + allocator, len, data); +} +void textsecure__signed_pre_key_record_structure__free_unpacked + (Textsecure__SignedPreKeyRecordStructure *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__signed_pre_key_record_structure__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__identity_key_pair_structure__init + (Textsecure__IdentityKeyPairStructure *message) +{ + static Textsecure__IdentityKeyPairStructure init_value = TEXTSECURE__IDENTITY_KEY_PAIR_STRUCTURE__INIT; + *message = init_value; +} +size_t textsecure__identity_key_pair_structure__get_packed_size + (const Textsecure__IdentityKeyPairStructure *message) +{ + assert(message->base.descriptor == &textsecure__identity_key_pair_structure__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__identity_key_pair_structure__pack + (const Textsecure__IdentityKeyPairStructure *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__identity_key_pair_structure__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__identity_key_pair_structure__pack_to_buffer + (const Textsecure__IdentityKeyPairStructure *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__identity_key_pair_structure__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__IdentityKeyPairStructure * + textsecure__identity_key_pair_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__IdentityKeyPairStructure *) + protobuf_c_message_unpack (&textsecure__identity_key_pair_structure__descriptor, + allocator, len, data); +} +void textsecure__identity_key_pair_structure__free_unpacked + (Textsecure__IdentityKeyPairStructure *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__identity_key_pair_structure__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__sender_key_state_structure__sender_chain_key__init + (Textsecure__SenderKeyStateStructure__SenderChainKey *message) +{ + static Textsecure__SenderKeyStateStructure__SenderChainKey init_value = TEXTSECURE__SENDER_KEY_STATE_STRUCTURE__SENDER_CHAIN_KEY__INIT; + *message = init_value; +} +void textsecure__sender_key_state_structure__sender_message_key__init + (Textsecure__SenderKeyStateStructure__SenderMessageKey *message) +{ + static Textsecure__SenderKeyStateStructure__SenderMessageKey init_value = TEXTSECURE__SENDER_KEY_STATE_STRUCTURE__SENDER_MESSAGE_KEY__INIT; + *message = init_value; +} +void textsecure__sender_key_state_structure__sender_signing_key__init + (Textsecure__SenderKeyStateStructure__SenderSigningKey *message) +{ + static Textsecure__SenderKeyStateStructure__SenderSigningKey init_value = TEXTSECURE__SENDER_KEY_STATE_STRUCTURE__SENDER_SIGNING_KEY__INIT; + *message = init_value; +} +void textsecure__sender_key_state_structure__init + (Textsecure__SenderKeyStateStructure *message) +{ + static Textsecure__SenderKeyStateStructure init_value = TEXTSECURE__SENDER_KEY_STATE_STRUCTURE__INIT; + *message = init_value; +} +size_t textsecure__sender_key_state_structure__get_packed_size + (const Textsecure__SenderKeyStateStructure *message) +{ + assert(message->base.descriptor == &textsecure__sender_key_state_structure__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__sender_key_state_structure__pack + (const Textsecure__SenderKeyStateStructure *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__sender_key_state_structure__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__sender_key_state_structure__pack_to_buffer + (const Textsecure__SenderKeyStateStructure *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__sender_key_state_structure__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__SenderKeyStateStructure * + textsecure__sender_key_state_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__SenderKeyStateStructure *) + protobuf_c_message_unpack (&textsecure__sender_key_state_structure__descriptor, + allocator, len, data); +} +void textsecure__sender_key_state_structure__free_unpacked + (Textsecure__SenderKeyStateStructure *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__sender_key_state_structure__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__sender_key_record_structure__init + (Textsecure__SenderKeyRecordStructure *message) +{ + static Textsecure__SenderKeyRecordStructure init_value = TEXTSECURE__SENDER_KEY_RECORD_STRUCTURE__INIT; + *message = init_value; +} +size_t textsecure__sender_key_record_structure__get_packed_size + (const Textsecure__SenderKeyRecordStructure *message) +{ + assert(message->base.descriptor == &textsecure__sender_key_record_structure__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__sender_key_record_structure__pack + (const Textsecure__SenderKeyRecordStructure *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__sender_key_record_structure__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__sender_key_record_structure__pack_to_buffer + (const Textsecure__SenderKeyRecordStructure *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__sender_key_record_structure__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__SenderKeyRecordStructure * + textsecure__sender_key_record_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__SenderKeyRecordStructure *) + protobuf_c_message_unpack (&textsecure__sender_key_record_structure__descriptor, + allocator, len, data); +} +void textsecure__sender_key_record_structure__free_unpacked + (Textsecure__SenderKeyRecordStructure *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__sender_key_record_structure__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +static const ProtobufCFieldDescriptor textsecure__session_structure__chain__chain_key__field_descriptors[2] = +{ + { + "index", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SessionStructure__Chain__ChainKey, has_index), + offsetof(Textsecure__SessionStructure__Chain__ChainKey, index), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "key", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__Chain__ChainKey, has_key), + offsetof(Textsecure__SessionStructure__Chain__ChainKey, key), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__session_structure__chain__chain_key__field_indices_by_name[] = { + 0, /* field[0] = index */ + 1, /* field[1] = key */ +}; +static const ProtobufCIntRange textsecure__session_structure__chain__chain_key__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 2 } +}; +const ProtobufCMessageDescriptor textsecure__session_structure__chain__chain_key__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SessionStructure.Chain.ChainKey", + "ChainKey", + "Textsecure__SessionStructure__Chain__ChainKey", + "textsecure", + sizeof(Textsecure__SessionStructure__Chain__ChainKey), + 2, + textsecure__session_structure__chain__chain_key__field_descriptors, + textsecure__session_structure__chain__chain_key__field_indices_by_name, + 1, textsecure__session_structure__chain__chain_key__number_ranges, + (ProtobufCMessageInit) textsecure__session_structure__chain__chain_key__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__session_structure__chain__message_key__field_descriptors[4] = +{ + { + "index", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SessionStructure__Chain__MessageKey, has_index), + offsetof(Textsecure__SessionStructure__Chain__MessageKey, index), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "cipherKey", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__Chain__MessageKey, has_cipherkey), + offsetof(Textsecure__SessionStructure__Chain__MessageKey, cipherkey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "macKey", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__Chain__MessageKey, has_mackey), + offsetof(Textsecure__SessionStructure__Chain__MessageKey, mackey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "iv", + 4, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__Chain__MessageKey, has_iv), + offsetof(Textsecure__SessionStructure__Chain__MessageKey, iv), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__session_structure__chain__message_key__field_indices_by_name[] = { + 1, /* field[1] = cipherKey */ + 0, /* field[0] = index */ + 3, /* field[3] = iv */ + 2, /* field[2] = macKey */ +}; +static const ProtobufCIntRange textsecure__session_structure__chain__message_key__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 4 } +}; +const ProtobufCMessageDescriptor textsecure__session_structure__chain__message_key__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SessionStructure.Chain.MessageKey", + "MessageKey", + "Textsecure__SessionStructure__Chain__MessageKey", + "textsecure", + sizeof(Textsecure__SessionStructure__Chain__MessageKey), + 4, + textsecure__session_structure__chain__message_key__field_descriptors, + textsecure__session_structure__chain__message_key__field_indices_by_name, + 1, textsecure__session_structure__chain__message_key__number_ranges, + (ProtobufCMessageInit) textsecure__session_structure__chain__message_key__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__session_structure__chain__field_descriptors[4] = +{ + { + "senderRatchetKey", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__Chain, has_senderratchetkey), + offsetof(Textsecure__SessionStructure__Chain, senderratchetkey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "senderRatchetKeyPrivate", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__Chain, has_senderratchetkeyprivate), + offsetof(Textsecure__SessionStructure__Chain, senderratchetkeyprivate), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "chainKey", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_MESSAGE, + 0, /* quantifier_offset */ + offsetof(Textsecure__SessionStructure__Chain, chainkey), + &textsecure__session_structure__chain__chain_key__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "messageKeys", + 4, + PROTOBUF_C_LABEL_REPEATED, + PROTOBUF_C_TYPE_MESSAGE, + offsetof(Textsecure__SessionStructure__Chain, n_messagekeys), + offsetof(Textsecure__SessionStructure__Chain, messagekeys), + &textsecure__session_structure__chain__message_key__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__session_structure__chain__field_indices_by_name[] = { + 2, /* field[2] = chainKey */ + 3, /* field[3] = messageKeys */ + 0, /* field[0] = senderRatchetKey */ + 1, /* field[1] = senderRatchetKeyPrivate */ +}; +static const ProtobufCIntRange textsecure__session_structure__chain__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 4 } +}; +const ProtobufCMessageDescriptor textsecure__session_structure__chain__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SessionStructure.Chain", + "Chain", + "Textsecure__SessionStructure__Chain", + "textsecure", + sizeof(Textsecure__SessionStructure__Chain), + 4, + textsecure__session_structure__chain__field_descriptors, + textsecure__session_structure__chain__field_indices_by_name, + 1, textsecure__session_structure__chain__number_ranges, + (ProtobufCMessageInit) textsecure__session_structure__chain__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__session_structure__pending_key_exchange__field_descriptors[7] = +{ + { + "sequence", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SessionStructure__PendingKeyExchange, has_sequence), + offsetof(Textsecure__SessionStructure__PendingKeyExchange, sequence), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "localBaseKey", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__PendingKeyExchange, has_localbasekey), + offsetof(Textsecure__SessionStructure__PendingKeyExchange, localbasekey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "localBaseKeyPrivate", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__PendingKeyExchange, has_localbasekeyprivate), + offsetof(Textsecure__SessionStructure__PendingKeyExchange, localbasekeyprivate), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "localRatchetKey", + 4, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__PendingKeyExchange, has_localratchetkey), + offsetof(Textsecure__SessionStructure__PendingKeyExchange, localratchetkey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "localRatchetKeyPrivate", + 5, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__PendingKeyExchange, has_localratchetkeyprivate), + offsetof(Textsecure__SessionStructure__PendingKeyExchange, localratchetkeyprivate), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "localIdentityKey", + 7, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__PendingKeyExchange, has_localidentitykey), + offsetof(Textsecure__SessionStructure__PendingKeyExchange, localidentitykey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "localIdentityKeyPrivate", + 8, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__PendingKeyExchange, has_localidentitykeyprivate), + offsetof(Textsecure__SessionStructure__PendingKeyExchange, localidentitykeyprivate), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__session_structure__pending_key_exchange__field_indices_by_name[] = { + 1, /* field[1] = localBaseKey */ + 2, /* field[2] = localBaseKeyPrivate */ + 5, /* field[5] = localIdentityKey */ + 6, /* field[6] = localIdentityKeyPrivate */ + 3, /* field[3] = localRatchetKey */ + 4, /* field[4] = localRatchetKeyPrivate */ + 0, /* field[0] = sequence */ +}; +static const ProtobufCIntRange textsecure__session_structure__pending_key_exchange__number_ranges[2 + 1] = +{ + { 1, 0 }, + { 7, 5 }, + { 0, 7 } +}; +const ProtobufCMessageDescriptor textsecure__session_structure__pending_key_exchange__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SessionStructure.PendingKeyExchange", + "PendingKeyExchange", + "Textsecure__SessionStructure__PendingKeyExchange", + "textsecure", + sizeof(Textsecure__SessionStructure__PendingKeyExchange), + 7, + textsecure__session_structure__pending_key_exchange__field_descriptors, + textsecure__session_structure__pending_key_exchange__field_indices_by_name, + 2, textsecure__session_structure__pending_key_exchange__number_ranges, + (ProtobufCMessageInit) textsecure__session_structure__pending_key_exchange__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__session_structure__pending_pre_key__field_descriptors[3] = +{ + { + "preKeyId", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SessionStructure__PendingPreKey, has_prekeyid), + offsetof(Textsecure__SessionStructure__PendingPreKey, prekeyid), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "baseKey", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure__PendingPreKey, has_basekey), + offsetof(Textsecure__SessionStructure__PendingPreKey, basekey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "signedPreKeyId", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_INT32, + offsetof(Textsecure__SessionStructure__PendingPreKey, has_signedprekeyid), + offsetof(Textsecure__SessionStructure__PendingPreKey, signedprekeyid), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__session_structure__pending_pre_key__field_indices_by_name[] = { + 1, /* field[1] = baseKey */ + 0, /* field[0] = preKeyId */ + 2, /* field[2] = signedPreKeyId */ +}; +static const ProtobufCIntRange textsecure__session_structure__pending_pre_key__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 3 } +}; +const ProtobufCMessageDescriptor textsecure__session_structure__pending_pre_key__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SessionStructure.PendingPreKey", + "PendingPreKey", + "Textsecure__SessionStructure__PendingPreKey", + "textsecure", + sizeof(Textsecure__SessionStructure__PendingPreKey), + 3, + textsecure__session_structure__pending_pre_key__field_descriptors, + textsecure__session_structure__pending_pre_key__field_indices_by_name, + 1, textsecure__session_structure__pending_pre_key__number_ranges, + (ProtobufCMessageInit) textsecure__session_structure__pending_pre_key__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__session_structure__field_descriptors[13] = +{ + { + "sessionVersion", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SessionStructure, has_sessionversion), + offsetof(Textsecure__SessionStructure, sessionversion), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "localIdentityPublic", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure, has_localidentitypublic), + offsetof(Textsecure__SessionStructure, localidentitypublic), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "remoteIdentityPublic", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure, has_remoteidentitypublic), + offsetof(Textsecure__SessionStructure, remoteidentitypublic), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "rootKey", + 4, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure, has_rootkey), + offsetof(Textsecure__SessionStructure, rootkey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "previousCounter", + 5, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SessionStructure, has_previouscounter), + offsetof(Textsecure__SessionStructure, previouscounter), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "senderChain", + 6, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_MESSAGE, + 0, /* quantifier_offset */ + offsetof(Textsecure__SessionStructure, senderchain), + &textsecure__session_structure__chain__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "receiverChains", + 7, + PROTOBUF_C_LABEL_REPEATED, + PROTOBUF_C_TYPE_MESSAGE, + offsetof(Textsecure__SessionStructure, n_receiverchains), + offsetof(Textsecure__SessionStructure, receiverchains), + &textsecure__session_structure__chain__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "pendingKeyExchange", + 8, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_MESSAGE, + 0, /* quantifier_offset */ + offsetof(Textsecure__SessionStructure, pendingkeyexchange), + &textsecure__session_structure__pending_key_exchange__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "pendingPreKey", + 9, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_MESSAGE, + 0, /* quantifier_offset */ + offsetof(Textsecure__SessionStructure, pendingprekey), + &textsecure__session_structure__pending_pre_key__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "remoteRegistrationId", + 10, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SessionStructure, has_remoteregistrationid), + offsetof(Textsecure__SessionStructure, remoteregistrationid), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "localRegistrationId", + 11, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SessionStructure, has_localregistrationid), + offsetof(Textsecure__SessionStructure, localregistrationid), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "needsRefresh", + 12, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BOOL, + offsetof(Textsecure__SessionStructure, has_needsrefresh), + offsetof(Textsecure__SessionStructure, needsrefresh), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "aliceBaseKey", + 13, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SessionStructure, has_alicebasekey), + offsetof(Textsecure__SessionStructure, alicebasekey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__session_structure__field_indices_by_name[] = { + 12, /* field[12] = aliceBaseKey */ + 1, /* field[1] = localIdentityPublic */ + 10, /* field[10] = localRegistrationId */ + 11, /* field[11] = needsRefresh */ + 7, /* field[7] = pendingKeyExchange */ + 8, /* field[8] = pendingPreKey */ + 4, /* field[4] = previousCounter */ + 6, /* field[6] = receiverChains */ + 2, /* field[2] = remoteIdentityPublic */ + 9, /* field[9] = remoteRegistrationId */ + 3, /* field[3] = rootKey */ + 5, /* field[5] = senderChain */ + 0, /* field[0] = sessionVersion */ +}; +static const ProtobufCIntRange textsecure__session_structure__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 13 } +}; +const ProtobufCMessageDescriptor textsecure__session_structure__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SessionStructure", + "SessionStructure", + "Textsecure__SessionStructure", + "textsecure", + sizeof(Textsecure__SessionStructure), + 13, + textsecure__session_structure__field_descriptors, + textsecure__session_structure__field_indices_by_name, + 1, textsecure__session_structure__number_ranges, + (ProtobufCMessageInit) textsecure__session_structure__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__record_structure__field_descriptors[2] = +{ + { + "currentSession", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_MESSAGE, + 0, /* quantifier_offset */ + offsetof(Textsecure__RecordStructure, currentsession), + &textsecure__session_structure__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "previousSessions", + 2, + PROTOBUF_C_LABEL_REPEATED, + PROTOBUF_C_TYPE_MESSAGE, + offsetof(Textsecure__RecordStructure, n_previoussessions), + offsetof(Textsecure__RecordStructure, previoussessions), + &textsecure__session_structure__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__record_structure__field_indices_by_name[] = { + 0, /* field[0] = currentSession */ + 1, /* field[1] = previousSessions */ +}; +static const ProtobufCIntRange textsecure__record_structure__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 2 } +}; +const ProtobufCMessageDescriptor textsecure__record_structure__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.RecordStructure", + "RecordStructure", + "Textsecure__RecordStructure", + "textsecure", + sizeof(Textsecure__RecordStructure), + 2, + textsecure__record_structure__field_descriptors, + textsecure__record_structure__field_indices_by_name, + 1, textsecure__record_structure__number_ranges, + (ProtobufCMessageInit) textsecure__record_structure__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__pre_key_record_structure__field_descriptors[3] = +{ + { + "id", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__PreKeyRecordStructure, has_id), + offsetof(Textsecure__PreKeyRecordStructure, id), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "publicKey", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__PreKeyRecordStructure, has_publickey), + offsetof(Textsecure__PreKeyRecordStructure, publickey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "privateKey", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__PreKeyRecordStructure, has_privatekey), + offsetof(Textsecure__PreKeyRecordStructure, privatekey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__pre_key_record_structure__field_indices_by_name[] = { + 0, /* field[0] = id */ + 2, /* field[2] = privateKey */ + 1, /* field[1] = publicKey */ +}; +static const ProtobufCIntRange textsecure__pre_key_record_structure__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 3 } +}; +const ProtobufCMessageDescriptor textsecure__pre_key_record_structure__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.PreKeyRecordStructure", + "PreKeyRecordStructure", + "Textsecure__PreKeyRecordStructure", + "textsecure", + sizeof(Textsecure__PreKeyRecordStructure), + 3, + textsecure__pre_key_record_structure__field_descriptors, + textsecure__pre_key_record_structure__field_indices_by_name, + 1, textsecure__pre_key_record_structure__number_ranges, + (ProtobufCMessageInit) textsecure__pre_key_record_structure__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__signed_pre_key_record_structure__field_descriptors[5] = +{ + { + "id", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SignedPreKeyRecordStructure, has_id), + offsetof(Textsecure__SignedPreKeyRecordStructure, id), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "publicKey", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SignedPreKeyRecordStructure, has_publickey), + offsetof(Textsecure__SignedPreKeyRecordStructure, publickey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "privateKey", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SignedPreKeyRecordStructure, has_privatekey), + offsetof(Textsecure__SignedPreKeyRecordStructure, privatekey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "signature", + 4, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SignedPreKeyRecordStructure, has_signature), + offsetof(Textsecure__SignedPreKeyRecordStructure, signature), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "timestamp", + 5, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_FIXED64, + offsetof(Textsecure__SignedPreKeyRecordStructure, has_timestamp), + offsetof(Textsecure__SignedPreKeyRecordStructure, timestamp), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__signed_pre_key_record_structure__field_indices_by_name[] = { + 0, /* field[0] = id */ + 2, /* field[2] = privateKey */ + 1, /* field[1] = publicKey */ + 3, /* field[3] = signature */ + 4, /* field[4] = timestamp */ +}; +static const ProtobufCIntRange textsecure__signed_pre_key_record_structure__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 5 } +}; +const ProtobufCMessageDescriptor textsecure__signed_pre_key_record_structure__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SignedPreKeyRecordStructure", + "SignedPreKeyRecordStructure", + "Textsecure__SignedPreKeyRecordStructure", + "textsecure", + sizeof(Textsecure__SignedPreKeyRecordStructure), + 5, + textsecure__signed_pre_key_record_structure__field_descriptors, + textsecure__signed_pre_key_record_structure__field_indices_by_name, + 1, textsecure__signed_pre_key_record_structure__number_ranges, + (ProtobufCMessageInit) textsecure__signed_pre_key_record_structure__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__identity_key_pair_structure__field_descriptors[2] = +{ + { + "publicKey", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__IdentityKeyPairStructure, has_publickey), + offsetof(Textsecure__IdentityKeyPairStructure, publickey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "privateKey", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__IdentityKeyPairStructure, has_privatekey), + offsetof(Textsecure__IdentityKeyPairStructure, privatekey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__identity_key_pair_structure__field_indices_by_name[] = { + 1, /* field[1] = privateKey */ + 0, /* field[0] = publicKey */ +}; +static const ProtobufCIntRange textsecure__identity_key_pair_structure__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 2 } +}; +const ProtobufCMessageDescriptor textsecure__identity_key_pair_structure__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.IdentityKeyPairStructure", + "IdentityKeyPairStructure", + "Textsecure__IdentityKeyPairStructure", + "textsecure", + sizeof(Textsecure__IdentityKeyPairStructure), + 2, + textsecure__identity_key_pair_structure__field_descriptors, + textsecure__identity_key_pair_structure__field_indices_by_name, + 1, textsecure__identity_key_pair_structure__number_ranges, + (ProtobufCMessageInit) textsecure__identity_key_pair_structure__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__sender_key_state_structure__sender_chain_key__field_descriptors[2] = +{ + { + "iteration", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SenderKeyStateStructure__SenderChainKey, has_iteration), + offsetof(Textsecure__SenderKeyStateStructure__SenderChainKey, iteration), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "seed", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SenderKeyStateStructure__SenderChainKey, has_seed), + offsetof(Textsecure__SenderKeyStateStructure__SenderChainKey, seed), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__sender_key_state_structure__sender_chain_key__field_indices_by_name[] = { + 0, /* field[0] = iteration */ + 1, /* field[1] = seed */ +}; +static const ProtobufCIntRange textsecure__sender_key_state_structure__sender_chain_key__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 2 } +}; +const ProtobufCMessageDescriptor textsecure__sender_key_state_structure__sender_chain_key__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SenderKeyStateStructure.SenderChainKey", + "SenderChainKey", + "Textsecure__SenderKeyStateStructure__SenderChainKey", + "textsecure", + sizeof(Textsecure__SenderKeyStateStructure__SenderChainKey), + 2, + textsecure__sender_key_state_structure__sender_chain_key__field_descriptors, + textsecure__sender_key_state_structure__sender_chain_key__field_indices_by_name, + 1, textsecure__sender_key_state_structure__sender_chain_key__number_ranges, + (ProtobufCMessageInit) textsecure__sender_key_state_structure__sender_chain_key__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__sender_key_state_structure__sender_message_key__field_descriptors[2] = +{ + { + "iteration", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SenderKeyStateStructure__SenderMessageKey, has_iteration), + offsetof(Textsecure__SenderKeyStateStructure__SenderMessageKey, iteration), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "seed", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SenderKeyStateStructure__SenderMessageKey, has_seed), + offsetof(Textsecure__SenderKeyStateStructure__SenderMessageKey, seed), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__sender_key_state_structure__sender_message_key__field_indices_by_name[] = { + 0, /* field[0] = iteration */ + 1, /* field[1] = seed */ +}; +static const ProtobufCIntRange textsecure__sender_key_state_structure__sender_message_key__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 2 } +}; +const ProtobufCMessageDescriptor textsecure__sender_key_state_structure__sender_message_key__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SenderKeyStateStructure.SenderMessageKey", + "SenderMessageKey", + "Textsecure__SenderKeyStateStructure__SenderMessageKey", + "textsecure", + sizeof(Textsecure__SenderKeyStateStructure__SenderMessageKey), + 2, + textsecure__sender_key_state_structure__sender_message_key__field_descriptors, + textsecure__sender_key_state_structure__sender_message_key__field_indices_by_name, + 1, textsecure__sender_key_state_structure__sender_message_key__number_ranges, + (ProtobufCMessageInit) textsecure__sender_key_state_structure__sender_message_key__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__sender_key_state_structure__sender_signing_key__field_descriptors[2] = +{ + { + "public", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SenderKeyStateStructure__SenderSigningKey, has_public_), + offsetof(Textsecure__SenderKeyStateStructure__SenderSigningKey, public_), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "private", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SenderKeyStateStructure__SenderSigningKey, has_private_), + offsetof(Textsecure__SenderKeyStateStructure__SenderSigningKey, private_), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__sender_key_state_structure__sender_signing_key__field_indices_by_name[] = { + 1, /* field[1] = private */ + 0, /* field[0] = public */ +}; +static const ProtobufCIntRange textsecure__sender_key_state_structure__sender_signing_key__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 2 } +}; +const ProtobufCMessageDescriptor textsecure__sender_key_state_structure__sender_signing_key__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SenderKeyStateStructure.SenderSigningKey", + "SenderSigningKey", + "Textsecure__SenderKeyStateStructure__SenderSigningKey", + "textsecure", + sizeof(Textsecure__SenderKeyStateStructure__SenderSigningKey), + 2, + textsecure__sender_key_state_structure__sender_signing_key__field_descriptors, + textsecure__sender_key_state_structure__sender_signing_key__field_indices_by_name, + 1, textsecure__sender_key_state_structure__sender_signing_key__number_ranges, + (ProtobufCMessageInit) textsecure__sender_key_state_structure__sender_signing_key__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__sender_key_state_structure__field_descriptors[4] = +{ + { + "senderKeyId", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SenderKeyStateStructure, has_senderkeyid), + offsetof(Textsecure__SenderKeyStateStructure, senderkeyid), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "senderChainKey", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_MESSAGE, + 0, /* quantifier_offset */ + offsetof(Textsecure__SenderKeyStateStructure, senderchainkey), + &textsecure__sender_key_state_structure__sender_chain_key__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "senderSigningKey", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_MESSAGE, + 0, /* quantifier_offset */ + offsetof(Textsecure__SenderKeyStateStructure, sendersigningkey), + &textsecure__sender_key_state_structure__sender_signing_key__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "senderMessageKeys", + 4, + PROTOBUF_C_LABEL_REPEATED, + PROTOBUF_C_TYPE_MESSAGE, + offsetof(Textsecure__SenderKeyStateStructure, n_sendermessagekeys), + offsetof(Textsecure__SenderKeyStateStructure, sendermessagekeys), + &textsecure__sender_key_state_structure__sender_message_key__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__sender_key_state_structure__field_indices_by_name[] = { + 1, /* field[1] = senderChainKey */ + 0, /* field[0] = senderKeyId */ + 3, /* field[3] = senderMessageKeys */ + 2, /* field[2] = senderSigningKey */ +}; +static const ProtobufCIntRange textsecure__sender_key_state_structure__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 4 } +}; +const ProtobufCMessageDescriptor textsecure__sender_key_state_structure__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SenderKeyStateStructure", + "SenderKeyStateStructure", + "Textsecure__SenderKeyStateStructure", + "textsecure", + sizeof(Textsecure__SenderKeyStateStructure), + 4, + textsecure__sender_key_state_structure__field_descriptors, + textsecure__sender_key_state_structure__field_indices_by_name, + 1, textsecure__sender_key_state_structure__number_ranges, + (ProtobufCMessageInit) textsecure__sender_key_state_structure__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__sender_key_record_structure__field_descriptors[1] = +{ + { + "senderKeyStates", + 1, + PROTOBUF_C_LABEL_REPEATED, + PROTOBUF_C_TYPE_MESSAGE, + offsetof(Textsecure__SenderKeyRecordStructure, n_senderkeystates), + offsetof(Textsecure__SenderKeyRecordStructure, senderkeystates), + &textsecure__sender_key_state_structure__descriptor, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__sender_key_record_structure__field_indices_by_name[] = { + 0, /* field[0] = senderKeyStates */ +}; +static const ProtobufCIntRange textsecure__sender_key_record_structure__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 1 } +}; +const ProtobufCMessageDescriptor textsecure__sender_key_record_structure__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SenderKeyRecordStructure", + "SenderKeyRecordStructure", + "Textsecure__SenderKeyRecordStructure", + "textsecure", + sizeof(Textsecure__SenderKeyRecordStructure), + 1, + textsecure__sender_key_record_structure__field_descriptors, + textsecure__sender_key_record_structure__field_indices_by_name, + 1, textsecure__sender_key_record_structure__number_ranges, + (ProtobufCMessageInit) textsecure__sender_key_record_structure__init, + NULL,NULL,NULL /* reserved[123] */ +}; diff --git a/Sources/libsignal/LocalStorageProtocol.pb-c.h b/Sources/libsignal/LocalStorageProtocol.pb-c.h new file mode 100755 index 0000000..6f67df9 --- /dev/null +++ b/Sources/libsignal/LocalStorageProtocol.pb-c.h @@ -0,0 +1,509 @@ +/* Generated by the protocol buffer compiler. DO NOT EDIT! */ +/* Generated from: LocalStorageProtocol.proto */ + +#ifndef PROTOBUF_C_LocalStorageProtocol_2eproto__INCLUDED +#define PROTOBUF_C_LocalStorageProtocol_2eproto__INCLUDED + +#include "protobuf-c/protobuf-c.h" + +PROTOBUF_C__BEGIN_DECLS + +#if PROTOBUF_C_VERSION_NUMBER < 1000000 +# error This file was generated by a newer version of protoc-c which is incompatible with your libprotobuf-c headers. Please update your headers. +#elif 1002001 < PROTOBUF_C_MIN_COMPILER_VERSION +# error This file was generated by an older version of protoc-c which is incompatible with your libprotobuf-c headers. Please regenerate this file with a newer version of protoc-c. +#endif + + +typedef struct _Textsecure__SessionStructure Textsecure__SessionStructure; +typedef struct _Textsecure__SessionStructure__Chain Textsecure__SessionStructure__Chain; +typedef struct _Textsecure__SessionStructure__Chain__ChainKey Textsecure__SessionStructure__Chain__ChainKey; +typedef struct _Textsecure__SessionStructure__Chain__MessageKey Textsecure__SessionStructure__Chain__MessageKey; +typedef struct _Textsecure__SessionStructure__PendingKeyExchange Textsecure__SessionStructure__PendingKeyExchange; +typedef struct _Textsecure__SessionStructure__PendingPreKey Textsecure__SessionStructure__PendingPreKey; +typedef struct _Textsecure__RecordStructure Textsecure__RecordStructure; +typedef struct _Textsecure__PreKeyRecordStructure Textsecure__PreKeyRecordStructure; +typedef struct _Textsecure__SignedPreKeyRecordStructure Textsecure__SignedPreKeyRecordStructure; +typedef struct _Textsecure__IdentityKeyPairStructure Textsecure__IdentityKeyPairStructure; +typedef struct _Textsecure__SenderKeyStateStructure Textsecure__SenderKeyStateStructure; +typedef struct _Textsecure__SenderKeyStateStructure__SenderChainKey Textsecure__SenderKeyStateStructure__SenderChainKey; +typedef struct _Textsecure__SenderKeyStateStructure__SenderMessageKey Textsecure__SenderKeyStateStructure__SenderMessageKey; +typedef struct _Textsecure__SenderKeyStateStructure__SenderSigningKey Textsecure__SenderKeyStateStructure__SenderSigningKey; +typedef struct _Textsecure__SenderKeyRecordStructure Textsecure__SenderKeyRecordStructure; + + +/* --- enums --- */ + + +/* --- messages --- */ + +struct _Textsecure__SessionStructure__Chain__ChainKey +{ + ProtobufCMessage base; + protobuf_c_boolean has_index; + uint32_t index; + protobuf_c_boolean has_key; + ProtobufCBinaryData key; +}; +#define TEXTSECURE__SESSION_STRUCTURE__CHAIN__CHAIN_KEY__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__session_structure__chain__chain_key__descriptor) \ + , 0,0, 0,{0,NULL} } + + +struct _Textsecure__SessionStructure__Chain__MessageKey +{ + ProtobufCMessage base; + protobuf_c_boolean has_index; + uint32_t index; + protobuf_c_boolean has_cipherkey; + ProtobufCBinaryData cipherkey; + protobuf_c_boolean has_mackey; + ProtobufCBinaryData mackey; + protobuf_c_boolean has_iv; + ProtobufCBinaryData iv; +}; +#define TEXTSECURE__SESSION_STRUCTURE__CHAIN__MESSAGE_KEY__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__session_structure__chain__message_key__descriptor) \ + , 0,0, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL} } + + +struct _Textsecure__SessionStructure__Chain +{ + ProtobufCMessage base; + protobuf_c_boolean has_senderratchetkey; + ProtobufCBinaryData senderratchetkey; + protobuf_c_boolean has_senderratchetkeyprivate; + ProtobufCBinaryData senderratchetkeyprivate; + Textsecure__SessionStructure__Chain__ChainKey *chainkey; + size_t n_messagekeys; + Textsecure__SessionStructure__Chain__MessageKey **messagekeys; +}; +#define TEXTSECURE__SESSION_STRUCTURE__CHAIN__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__session_structure__chain__descriptor) \ + , 0,{0,NULL}, 0,{0,NULL}, NULL, 0,NULL } + + +struct _Textsecure__SessionStructure__PendingKeyExchange +{ + ProtobufCMessage base; + protobuf_c_boolean has_sequence; + uint32_t sequence; + protobuf_c_boolean has_localbasekey; + ProtobufCBinaryData localbasekey; + protobuf_c_boolean has_localbasekeyprivate; + ProtobufCBinaryData localbasekeyprivate; + protobuf_c_boolean has_localratchetkey; + ProtobufCBinaryData localratchetkey; + protobuf_c_boolean has_localratchetkeyprivate; + ProtobufCBinaryData localratchetkeyprivate; + protobuf_c_boolean has_localidentitykey; + ProtobufCBinaryData localidentitykey; + protobuf_c_boolean has_localidentitykeyprivate; + ProtobufCBinaryData localidentitykeyprivate; +}; +#define TEXTSECURE__SESSION_STRUCTURE__PENDING_KEY_EXCHANGE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__session_structure__pending_key_exchange__descriptor) \ + , 0,0, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL} } + + +struct _Textsecure__SessionStructure__PendingPreKey +{ + ProtobufCMessage base; + protobuf_c_boolean has_prekeyid; + uint32_t prekeyid; + protobuf_c_boolean has_signedprekeyid; + int32_t signedprekeyid; + protobuf_c_boolean has_basekey; + ProtobufCBinaryData basekey; +}; +#define TEXTSECURE__SESSION_STRUCTURE__PENDING_PRE_KEY__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__session_structure__pending_pre_key__descriptor) \ + , 0,0, 0,0, 0,{0,NULL} } + + +struct _Textsecure__SessionStructure +{ + ProtobufCMessage base; + protobuf_c_boolean has_sessionversion; + uint32_t sessionversion; + protobuf_c_boolean has_localidentitypublic; + ProtobufCBinaryData localidentitypublic; + protobuf_c_boolean has_remoteidentitypublic; + ProtobufCBinaryData remoteidentitypublic; + protobuf_c_boolean has_rootkey; + ProtobufCBinaryData rootkey; + protobuf_c_boolean has_previouscounter; + uint32_t previouscounter; + Textsecure__SessionStructure__Chain *senderchain; + size_t n_receiverchains; + Textsecure__SessionStructure__Chain **receiverchains; + Textsecure__SessionStructure__PendingKeyExchange *pendingkeyexchange; + Textsecure__SessionStructure__PendingPreKey *pendingprekey; + protobuf_c_boolean has_remoteregistrationid; + uint32_t remoteregistrationid; + protobuf_c_boolean has_localregistrationid; + uint32_t localregistrationid; + protobuf_c_boolean has_needsrefresh; + protobuf_c_boolean needsrefresh; + protobuf_c_boolean has_alicebasekey; + ProtobufCBinaryData alicebasekey; +}; +#define TEXTSECURE__SESSION_STRUCTURE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__session_structure__descriptor) \ + , 0,0, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL}, 0,0, NULL, 0,NULL, NULL, NULL, 0,0, 0,0, 0,0, 0,{0,NULL} } + + +struct _Textsecure__RecordStructure +{ + ProtobufCMessage base; + Textsecure__SessionStructure *currentsession; + size_t n_previoussessions; + Textsecure__SessionStructure **previoussessions; +}; +#define TEXTSECURE__RECORD_STRUCTURE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__record_structure__descriptor) \ + , NULL, 0,NULL } + + +struct _Textsecure__PreKeyRecordStructure +{ + ProtobufCMessage base; + protobuf_c_boolean has_id; + uint32_t id; + protobuf_c_boolean has_publickey; + ProtobufCBinaryData publickey; + protobuf_c_boolean has_privatekey; + ProtobufCBinaryData privatekey; +}; +#define TEXTSECURE__PRE_KEY_RECORD_STRUCTURE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__pre_key_record_structure__descriptor) \ + , 0,0, 0,{0,NULL}, 0,{0,NULL} } + + +struct _Textsecure__SignedPreKeyRecordStructure +{ + ProtobufCMessage base; + protobuf_c_boolean has_id; + uint32_t id; + protobuf_c_boolean has_publickey; + ProtobufCBinaryData publickey; + protobuf_c_boolean has_privatekey; + ProtobufCBinaryData privatekey; + protobuf_c_boolean has_signature; + ProtobufCBinaryData signature; + protobuf_c_boolean has_timestamp; + uint64_t timestamp; +}; +#define TEXTSECURE__SIGNED_PRE_KEY_RECORD_STRUCTURE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__signed_pre_key_record_structure__descriptor) \ + , 0,0, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL}, 0,0 } + + +struct _Textsecure__IdentityKeyPairStructure +{ + ProtobufCMessage base; + protobuf_c_boolean has_publickey; + ProtobufCBinaryData publickey; + protobuf_c_boolean has_privatekey; + ProtobufCBinaryData privatekey; +}; +#define TEXTSECURE__IDENTITY_KEY_PAIR_STRUCTURE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__identity_key_pair_structure__descriptor) \ + , 0,{0,NULL}, 0,{0,NULL} } + + +struct _Textsecure__SenderKeyStateStructure__SenderChainKey +{ + ProtobufCMessage base; + protobuf_c_boolean has_iteration; + uint32_t iteration; + protobuf_c_boolean has_seed; + ProtobufCBinaryData seed; +}; +#define TEXTSECURE__SENDER_KEY_STATE_STRUCTURE__SENDER_CHAIN_KEY__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__sender_key_state_structure__sender_chain_key__descriptor) \ + , 0,0, 0,{0,NULL} } + + +struct _Textsecure__SenderKeyStateStructure__SenderMessageKey +{ + ProtobufCMessage base; + protobuf_c_boolean has_iteration; + uint32_t iteration; + protobuf_c_boolean has_seed; + ProtobufCBinaryData seed; +}; +#define TEXTSECURE__SENDER_KEY_STATE_STRUCTURE__SENDER_MESSAGE_KEY__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__sender_key_state_structure__sender_message_key__descriptor) \ + , 0,0, 0,{0,NULL} } + + +struct _Textsecure__SenderKeyStateStructure__SenderSigningKey +{ + ProtobufCMessage base; + protobuf_c_boolean has_public_; + ProtobufCBinaryData public_; + protobuf_c_boolean has_private_; + ProtobufCBinaryData private_; +}; +#define TEXTSECURE__SENDER_KEY_STATE_STRUCTURE__SENDER_SIGNING_KEY__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__sender_key_state_structure__sender_signing_key__descriptor) \ + , 0,{0,NULL}, 0,{0,NULL} } + + +struct _Textsecure__SenderKeyStateStructure +{ + ProtobufCMessage base; + protobuf_c_boolean has_senderkeyid; + uint32_t senderkeyid; + Textsecure__SenderKeyStateStructure__SenderChainKey *senderchainkey; + Textsecure__SenderKeyStateStructure__SenderSigningKey *sendersigningkey; + size_t n_sendermessagekeys; + Textsecure__SenderKeyStateStructure__SenderMessageKey **sendermessagekeys; +}; +#define TEXTSECURE__SENDER_KEY_STATE_STRUCTURE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__sender_key_state_structure__descriptor) \ + , 0,0, NULL, NULL, 0,NULL } + + +struct _Textsecure__SenderKeyRecordStructure +{ + ProtobufCMessage base; + size_t n_senderkeystates; + Textsecure__SenderKeyStateStructure **senderkeystates; +}; +#define TEXTSECURE__SENDER_KEY_RECORD_STRUCTURE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__sender_key_record_structure__descriptor) \ + , 0,NULL } + + +/* Textsecure__SessionStructure__Chain__ChainKey methods */ +void textsecure__session_structure__chain__chain_key__init + (Textsecure__SessionStructure__Chain__ChainKey *message); +/* Textsecure__SessionStructure__Chain__MessageKey methods */ +void textsecure__session_structure__chain__message_key__init + (Textsecure__SessionStructure__Chain__MessageKey *message); +/* Textsecure__SessionStructure__Chain methods */ +void textsecure__session_structure__chain__init + (Textsecure__SessionStructure__Chain *message); +/* Textsecure__SessionStructure__PendingKeyExchange methods */ +void textsecure__session_structure__pending_key_exchange__init + (Textsecure__SessionStructure__PendingKeyExchange *message); +/* Textsecure__SessionStructure__PendingPreKey methods */ +void textsecure__session_structure__pending_pre_key__init + (Textsecure__SessionStructure__PendingPreKey *message); +/* Textsecure__SessionStructure methods */ +void textsecure__session_structure__init + (Textsecure__SessionStructure *message); +size_t textsecure__session_structure__get_packed_size + (const Textsecure__SessionStructure *message); +size_t textsecure__session_structure__pack + (const Textsecure__SessionStructure *message, + uint8_t *out); +size_t textsecure__session_structure__pack_to_buffer + (const Textsecure__SessionStructure *message, + ProtobufCBuffer *buffer); +Textsecure__SessionStructure * + textsecure__session_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__session_structure__free_unpacked + (Textsecure__SessionStructure *message, + ProtobufCAllocator *allocator); +/* Textsecure__RecordStructure methods */ +void textsecure__record_structure__init + (Textsecure__RecordStructure *message); +size_t textsecure__record_structure__get_packed_size + (const Textsecure__RecordStructure *message); +size_t textsecure__record_structure__pack + (const Textsecure__RecordStructure *message, + uint8_t *out); +size_t textsecure__record_structure__pack_to_buffer + (const Textsecure__RecordStructure *message, + ProtobufCBuffer *buffer); +Textsecure__RecordStructure * + textsecure__record_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__record_structure__free_unpacked + (Textsecure__RecordStructure *message, + ProtobufCAllocator *allocator); +/* Textsecure__PreKeyRecordStructure methods */ +void textsecure__pre_key_record_structure__init + (Textsecure__PreKeyRecordStructure *message); +size_t textsecure__pre_key_record_structure__get_packed_size + (const Textsecure__PreKeyRecordStructure *message); +size_t textsecure__pre_key_record_structure__pack + (const Textsecure__PreKeyRecordStructure *message, + uint8_t *out); +size_t textsecure__pre_key_record_structure__pack_to_buffer + (const Textsecure__PreKeyRecordStructure *message, + ProtobufCBuffer *buffer); +Textsecure__PreKeyRecordStructure * + textsecure__pre_key_record_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__pre_key_record_structure__free_unpacked + (Textsecure__PreKeyRecordStructure *message, + ProtobufCAllocator *allocator); +/* Textsecure__SignedPreKeyRecordStructure methods */ +void textsecure__signed_pre_key_record_structure__init + (Textsecure__SignedPreKeyRecordStructure *message); +size_t textsecure__signed_pre_key_record_structure__get_packed_size + (const Textsecure__SignedPreKeyRecordStructure *message); +size_t textsecure__signed_pre_key_record_structure__pack + (const Textsecure__SignedPreKeyRecordStructure *message, + uint8_t *out); +size_t textsecure__signed_pre_key_record_structure__pack_to_buffer + (const Textsecure__SignedPreKeyRecordStructure *message, + ProtobufCBuffer *buffer); +Textsecure__SignedPreKeyRecordStructure * + textsecure__signed_pre_key_record_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__signed_pre_key_record_structure__free_unpacked + (Textsecure__SignedPreKeyRecordStructure *message, + ProtobufCAllocator *allocator); +/* Textsecure__IdentityKeyPairStructure methods */ +void textsecure__identity_key_pair_structure__init + (Textsecure__IdentityKeyPairStructure *message); +size_t textsecure__identity_key_pair_structure__get_packed_size + (const Textsecure__IdentityKeyPairStructure *message); +size_t textsecure__identity_key_pair_structure__pack + (const Textsecure__IdentityKeyPairStructure *message, + uint8_t *out); +size_t textsecure__identity_key_pair_structure__pack_to_buffer + (const Textsecure__IdentityKeyPairStructure *message, + ProtobufCBuffer *buffer); +Textsecure__IdentityKeyPairStructure * + textsecure__identity_key_pair_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__identity_key_pair_structure__free_unpacked + (Textsecure__IdentityKeyPairStructure *message, + ProtobufCAllocator *allocator); +/* Textsecure__SenderKeyStateStructure__SenderChainKey methods */ +void textsecure__sender_key_state_structure__sender_chain_key__init + (Textsecure__SenderKeyStateStructure__SenderChainKey *message); +/* Textsecure__SenderKeyStateStructure__SenderMessageKey methods */ +void textsecure__sender_key_state_structure__sender_message_key__init + (Textsecure__SenderKeyStateStructure__SenderMessageKey *message); +/* Textsecure__SenderKeyStateStructure__SenderSigningKey methods */ +void textsecure__sender_key_state_structure__sender_signing_key__init + (Textsecure__SenderKeyStateStructure__SenderSigningKey *message); +/* Textsecure__SenderKeyStateStructure methods */ +void textsecure__sender_key_state_structure__init + (Textsecure__SenderKeyStateStructure *message); +size_t textsecure__sender_key_state_structure__get_packed_size + (const Textsecure__SenderKeyStateStructure *message); +size_t textsecure__sender_key_state_structure__pack + (const Textsecure__SenderKeyStateStructure *message, + uint8_t *out); +size_t textsecure__sender_key_state_structure__pack_to_buffer + (const Textsecure__SenderKeyStateStructure *message, + ProtobufCBuffer *buffer); +Textsecure__SenderKeyStateStructure * + textsecure__sender_key_state_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__sender_key_state_structure__free_unpacked + (Textsecure__SenderKeyStateStructure *message, + ProtobufCAllocator *allocator); +/* Textsecure__SenderKeyRecordStructure methods */ +void textsecure__sender_key_record_structure__init + (Textsecure__SenderKeyRecordStructure *message); +size_t textsecure__sender_key_record_structure__get_packed_size + (const Textsecure__SenderKeyRecordStructure *message); +size_t textsecure__sender_key_record_structure__pack + (const Textsecure__SenderKeyRecordStructure *message, + uint8_t *out); +size_t textsecure__sender_key_record_structure__pack_to_buffer + (const Textsecure__SenderKeyRecordStructure *message, + ProtobufCBuffer *buffer); +Textsecure__SenderKeyRecordStructure * + textsecure__sender_key_record_structure__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__sender_key_record_structure__free_unpacked + (Textsecure__SenderKeyRecordStructure *message, + ProtobufCAllocator *allocator); +/* --- per-message closures --- */ + +typedef void (*Textsecure__SessionStructure__Chain__ChainKey_Closure) + (const Textsecure__SessionStructure__Chain__ChainKey *message, + void *closure_data); +typedef void (*Textsecure__SessionStructure__Chain__MessageKey_Closure) + (const Textsecure__SessionStructure__Chain__MessageKey *message, + void *closure_data); +typedef void (*Textsecure__SessionStructure__Chain_Closure) + (const Textsecure__SessionStructure__Chain *message, + void *closure_data); +typedef void (*Textsecure__SessionStructure__PendingKeyExchange_Closure) + (const Textsecure__SessionStructure__PendingKeyExchange *message, + void *closure_data); +typedef void (*Textsecure__SessionStructure__PendingPreKey_Closure) + (const Textsecure__SessionStructure__PendingPreKey *message, + void *closure_data); +typedef void (*Textsecure__SessionStructure_Closure) + (const Textsecure__SessionStructure *message, + void *closure_data); +typedef void (*Textsecure__RecordStructure_Closure) + (const Textsecure__RecordStructure *message, + void *closure_data); +typedef void (*Textsecure__PreKeyRecordStructure_Closure) + (const Textsecure__PreKeyRecordStructure *message, + void *closure_data); +typedef void (*Textsecure__SignedPreKeyRecordStructure_Closure) + (const Textsecure__SignedPreKeyRecordStructure *message, + void *closure_data); +typedef void (*Textsecure__IdentityKeyPairStructure_Closure) + (const Textsecure__IdentityKeyPairStructure *message, + void *closure_data); +typedef void (*Textsecure__SenderKeyStateStructure__SenderChainKey_Closure) + (const Textsecure__SenderKeyStateStructure__SenderChainKey *message, + void *closure_data); +typedef void (*Textsecure__SenderKeyStateStructure__SenderMessageKey_Closure) + (const Textsecure__SenderKeyStateStructure__SenderMessageKey *message, + void *closure_data); +typedef void (*Textsecure__SenderKeyStateStructure__SenderSigningKey_Closure) + (const Textsecure__SenderKeyStateStructure__SenderSigningKey *message, + void *closure_data); +typedef void (*Textsecure__SenderKeyStateStructure_Closure) + (const Textsecure__SenderKeyStateStructure *message, + void *closure_data); +typedef void (*Textsecure__SenderKeyRecordStructure_Closure) + (const Textsecure__SenderKeyRecordStructure *message, + void *closure_data); + +/* --- services --- */ + + +/* --- descriptors --- */ + +extern const ProtobufCMessageDescriptor textsecure__session_structure__descriptor; +extern const ProtobufCMessageDescriptor textsecure__session_structure__chain__descriptor; +extern const ProtobufCMessageDescriptor textsecure__session_structure__chain__chain_key__descriptor; +extern const ProtobufCMessageDescriptor textsecure__session_structure__chain__message_key__descriptor; +extern const ProtobufCMessageDescriptor textsecure__session_structure__pending_key_exchange__descriptor; +extern const ProtobufCMessageDescriptor textsecure__session_structure__pending_pre_key__descriptor; +extern const ProtobufCMessageDescriptor textsecure__record_structure__descriptor; +extern const ProtobufCMessageDescriptor textsecure__pre_key_record_structure__descriptor; +extern const ProtobufCMessageDescriptor textsecure__signed_pre_key_record_structure__descriptor; +extern const ProtobufCMessageDescriptor textsecure__identity_key_pair_structure__descriptor; +extern const ProtobufCMessageDescriptor textsecure__sender_key_state_structure__descriptor; +extern const ProtobufCMessageDescriptor textsecure__sender_key_state_structure__sender_chain_key__descriptor; +extern const ProtobufCMessageDescriptor textsecure__sender_key_state_structure__sender_message_key__descriptor; +extern const ProtobufCMessageDescriptor textsecure__sender_key_state_structure__sender_signing_key__descriptor; +extern const ProtobufCMessageDescriptor textsecure__sender_key_record_structure__descriptor; + +PROTOBUF_C__END_DECLS + + +#endif /* PROTOBUF_C_LocalStorageProtocol_2eproto__INCLUDED */ diff --git a/Sources/libsignal/WhisperTextProtocol.pb-c.c b/Sources/libsignal/WhisperTextProtocol.pb-c.c new file mode 100755 index 0000000..f73c064 --- /dev/null +++ b/Sources/libsignal/WhisperTextProtocol.pb-c.c @@ -0,0 +1,729 @@ +/* Generated by the protocol buffer compiler. DO NOT EDIT! */ +/* Generated from: WhisperTextProtocol.proto */ + +/* Do not generate deprecated warnings for self */ +#ifndef PROTOBUF_C__NO_DEPRECATED +#define PROTOBUF_C__NO_DEPRECATED +#endif + +#include "WhisperTextProtocol.pb-c.h" +void textsecure__signal_message__init + (Textsecure__SignalMessage *message) +{ + static Textsecure__SignalMessage init_value = TEXTSECURE__SIGNAL_MESSAGE__INIT; + *message = init_value; +} +size_t textsecure__signal_message__get_packed_size + (const Textsecure__SignalMessage *message) +{ + assert(message->base.descriptor == &textsecure__signal_message__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__signal_message__pack + (const Textsecure__SignalMessage *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__signal_message__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__signal_message__pack_to_buffer + (const Textsecure__SignalMessage *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__signal_message__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__SignalMessage * + textsecure__signal_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__SignalMessage *) + protobuf_c_message_unpack (&textsecure__signal_message__descriptor, + allocator, len, data); +} +void textsecure__signal_message__free_unpacked + (Textsecure__SignalMessage *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__signal_message__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__pre_key_signal_message__init + (Textsecure__PreKeySignalMessage *message) +{ + static Textsecure__PreKeySignalMessage init_value = TEXTSECURE__PRE_KEY_SIGNAL_MESSAGE__INIT; + *message = init_value; +} +size_t textsecure__pre_key_signal_message__get_packed_size + (const Textsecure__PreKeySignalMessage *message) +{ + assert(message->base.descriptor == &textsecure__pre_key_signal_message__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__pre_key_signal_message__pack + (const Textsecure__PreKeySignalMessage *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__pre_key_signal_message__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__pre_key_signal_message__pack_to_buffer + (const Textsecure__PreKeySignalMessage *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__pre_key_signal_message__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__PreKeySignalMessage * + textsecure__pre_key_signal_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__PreKeySignalMessage *) + protobuf_c_message_unpack (&textsecure__pre_key_signal_message__descriptor, + allocator, len, data); +} +void textsecure__pre_key_signal_message__free_unpacked + (Textsecure__PreKeySignalMessage *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__pre_key_signal_message__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__key_exchange_message__init + (Textsecure__KeyExchangeMessage *message) +{ + static Textsecure__KeyExchangeMessage init_value = TEXTSECURE__KEY_EXCHANGE_MESSAGE__INIT; + *message = init_value; +} +size_t textsecure__key_exchange_message__get_packed_size + (const Textsecure__KeyExchangeMessage *message) +{ + assert(message->base.descriptor == &textsecure__key_exchange_message__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__key_exchange_message__pack + (const Textsecure__KeyExchangeMessage *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__key_exchange_message__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__key_exchange_message__pack_to_buffer + (const Textsecure__KeyExchangeMessage *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__key_exchange_message__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__KeyExchangeMessage * + textsecure__key_exchange_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__KeyExchangeMessage *) + protobuf_c_message_unpack (&textsecure__key_exchange_message__descriptor, + allocator, len, data); +} +void textsecure__key_exchange_message__free_unpacked + (Textsecure__KeyExchangeMessage *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__key_exchange_message__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__sender_key_message__init + (Textsecure__SenderKeyMessage *message) +{ + static Textsecure__SenderKeyMessage init_value = TEXTSECURE__SENDER_KEY_MESSAGE__INIT; + *message = init_value; +} +size_t textsecure__sender_key_message__get_packed_size + (const Textsecure__SenderKeyMessage *message) +{ + assert(message->base.descriptor == &textsecure__sender_key_message__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__sender_key_message__pack + (const Textsecure__SenderKeyMessage *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__sender_key_message__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__sender_key_message__pack_to_buffer + (const Textsecure__SenderKeyMessage *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__sender_key_message__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__SenderKeyMessage * + textsecure__sender_key_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__SenderKeyMessage *) + protobuf_c_message_unpack (&textsecure__sender_key_message__descriptor, + allocator, len, data); +} +void textsecure__sender_key_message__free_unpacked + (Textsecure__SenderKeyMessage *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__sender_key_message__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__sender_key_distribution_message__init + (Textsecure__SenderKeyDistributionMessage *message) +{ + static Textsecure__SenderKeyDistributionMessage init_value = TEXTSECURE__SENDER_KEY_DISTRIBUTION_MESSAGE__INIT; + *message = init_value; +} +size_t textsecure__sender_key_distribution_message__get_packed_size + (const Textsecure__SenderKeyDistributionMessage *message) +{ + assert(message->base.descriptor == &textsecure__sender_key_distribution_message__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__sender_key_distribution_message__pack + (const Textsecure__SenderKeyDistributionMessage *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__sender_key_distribution_message__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__sender_key_distribution_message__pack_to_buffer + (const Textsecure__SenderKeyDistributionMessage *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__sender_key_distribution_message__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__SenderKeyDistributionMessage * + textsecure__sender_key_distribution_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__SenderKeyDistributionMessage *) + protobuf_c_message_unpack (&textsecure__sender_key_distribution_message__descriptor, + allocator, len, data); +} +void textsecure__sender_key_distribution_message__free_unpacked + (Textsecure__SenderKeyDistributionMessage *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__sender_key_distribution_message__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +void textsecure__device_consistency_code_message__init + (Textsecure__DeviceConsistencyCodeMessage *message) +{ + static Textsecure__DeviceConsistencyCodeMessage init_value = TEXTSECURE__DEVICE_CONSISTENCY_CODE_MESSAGE__INIT; + *message = init_value; +} +size_t textsecure__device_consistency_code_message__get_packed_size + (const Textsecure__DeviceConsistencyCodeMessage *message) +{ + assert(message->base.descriptor == &textsecure__device_consistency_code_message__descriptor); + return protobuf_c_message_get_packed_size ((const ProtobufCMessage*)(message)); +} +size_t textsecure__device_consistency_code_message__pack + (const Textsecure__DeviceConsistencyCodeMessage *message, + uint8_t *out) +{ + assert(message->base.descriptor == &textsecure__device_consistency_code_message__descriptor); + return protobuf_c_message_pack ((const ProtobufCMessage*)message, out); +} +size_t textsecure__device_consistency_code_message__pack_to_buffer + (const Textsecure__DeviceConsistencyCodeMessage *message, + ProtobufCBuffer *buffer) +{ + assert(message->base.descriptor == &textsecure__device_consistency_code_message__descriptor); + return protobuf_c_message_pack_to_buffer ((const ProtobufCMessage*)message, buffer); +} +Textsecure__DeviceConsistencyCodeMessage * + textsecure__device_consistency_code_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data) +{ + return (Textsecure__DeviceConsistencyCodeMessage *) + protobuf_c_message_unpack (&textsecure__device_consistency_code_message__descriptor, + allocator, len, data); +} +void textsecure__device_consistency_code_message__free_unpacked + (Textsecure__DeviceConsistencyCodeMessage *message, + ProtobufCAllocator *allocator) +{ + assert(message->base.descriptor == &textsecure__device_consistency_code_message__descriptor); + protobuf_c_message_free_unpacked ((ProtobufCMessage*)message, allocator); +} +static const ProtobufCFieldDescriptor textsecure__signal_message__field_descriptors[4] = +{ + { + "ratchetKey", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SignalMessage, has_ratchetkey), + offsetof(Textsecure__SignalMessage, ratchetkey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "counter", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SignalMessage, has_counter), + offsetof(Textsecure__SignalMessage, counter), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "previousCounter", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SignalMessage, has_previouscounter), + offsetof(Textsecure__SignalMessage, previouscounter), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "ciphertext", + 4, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SignalMessage, has_ciphertext), + offsetof(Textsecure__SignalMessage, ciphertext), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__signal_message__field_indices_by_name[] = { + 3, /* field[3] = ciphertext */ + 1, /* field[1] = counter */ + 2, /* field[2] = previousCounter */ + 0, /* field[0] = ratchetKey */ +}; +static const ProtobufCIntRange textsecure__signal_message__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 4 } +}; +const ProtobufCMessageDescriptor textsecure__signal_message__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SignalMessage", + "SignalMessage", + "Textsecure__SignalMessage", + "textsecure", + sizeof(Textsecure__SignalMessage), + 4, + textsecure__signal_message__field_descriptors, + textsecure__signal_message__field_indices_by_name, + 1, textsecure__signal_message__number_ranges, + (ProtobufCMessageInit) textsecure__signal_message__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__pre_key_signal_message__field_descriptors[6] = +{ + { + "preKeyId", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__PreKeySignalMessage, has_prekeyid), + offsetof(Textsecure__PreKeySignalMessage, prekeyid), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "baseKey", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__PreKeySignalMessage, has_basekey), + offsetof(Textsecure__PreKeySignalMessage, basekey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "identityKey", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__PreKeySignalMessage, has_identitykey), + offsetof(Textsecure__PreKeySignalMessage, identitykey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "message", + 4, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__PreKeySignalMessage, has_message), + offsetof(Textsecure__PreKeySignalMessage, message), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "registrationId", + 5, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__PreKeySignalMessage, has_registrationid), + offsetof(Textsecure__PreKeySignalMessage, registrationid), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "signedPreKeyId", + 6, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__PreKeySignalMessage, has_signedprekeyid), + offsetof(Textsecure__PreKeySignalMessage, signedprekeyid), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__pre_key_signal_message__field_indices_by_name[] = { + 1, /* field[1] = baseKey */ + 2, /* field[2] = identityKey */ + 3, /* field[3] = message */ + 0, /* field[0] = preKeyId */ + 4, /* field[4] = registrationId */ + 5, /* field[5] = signedPreKeyId */ +}; +static const ProtobufCIntRange textsecure__pre_key_signal_message__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 6 } +}; +const ProtobufCMessageDescriptor textsecure__pre_key_signal_message__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.PreKeySignalMessage", + "PreKeySignalMessage", + "Textsecure__PreKeySignalMessage", + "textsecure", + sizeof(Textsecure__PreKeySignalMessage), + 6, + textsecure__pre_key_signal_message__field_descriptors, + textsecure__pre_key_signal_message__field_indices_by_name, + 1, textsecure__pre_key_signal_message__number_ranges, + (ProtobufCMessageInit) textsecure__pre_key_signal_message__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__key_exchange_message__field_descriptors[5] = +{ + { + "id", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__KeyExchangeMessage, has_id), + offsetof(Textsecure__KeyExchangeMessage, id), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "baseKey", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__KeyExchangeMessage, has_basekey), + offsetof(Textsecure__KeyExchangeMessage, basekey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "ratchetKey", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__KeyExchangeMessage, has_ratchetkey), + offsetof(Textsecure__KeyExchangeMessage, ratchetkey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "identityKey", + 4, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__KeyExchangeMessage, has_identitykey), + offsetof(Textsecure__KeyExchangeMessage, identitykey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "baseKeySignature", + 5, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__KeyExchangeMessage, has_basekeysignature), + offsetof(Textsecure__KeyExchangeMessage, basekeysignature), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__key_exchange_message__field_indices_by_name[] = { + 1, /* field[1] = baseKey */ + 4, /* field[4] = baseKeySignature */ + 0, /* field[0] = id */ + 3, /* field[3] = identityKey */ + 2, /* field[2] = ratchetKey */ +}; +static const ProtobufCIntRange textsecure__key_exchange_message__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 5 } +}; +const ProtobufCMessageDescriptor textsecure__key_exchange_message__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.KeyExchangeMessage", + "KeyExchangeMessage", + "Textsecure__KeyExchangeMessage", + "textsecure", + sizeof(Textsecure__KeyExchangeMessage), + 5, + textsecure__key_exchange_message__field_descriptors, + textsecure__key_exchange_message__field_indices_by_name, + 1, textsecure__key_exchange_message__number_ranges, + (ProtobufCMessageInit) textsecure__key_exchange_message__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__sender_key_message__field_descriptors[3] = +{ + { + "id", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SenderKeyMessage, has_id), + offsetof(Textsecure__SenderKeyMessage, id), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "iteration", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SenderKeyMessage, has_iteration), + offsetof(Textsecure__SenderKeyMessage, iteration), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "ciphertext", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SenderKeyMessage, has_ciphertext), + offsetof(Textsecure__SenderKeyMessage, ciphertext), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__sender_key_message__field_indices_by_name[] = { + 2, /* field[2] = ciphertext */ + 0, /* field[0] = id */ + 1, /* field[1] = iteration */ +}; +static const ProtobufCIntRange textsecure__sender_key_message__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 3 } +}; +const ProtobufCMessageDescriptor textsecure__sender_key_message__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SenderKeyMessage", + "SenderKeyMessage", + "Textsecure__SenderKeyMessage", + "textsecure", + sizeof(Textsecure__SenderKeyMessage), + 3, + textsecure__sender_key_message__field_descriptors, + textsecure__sender_key_message__field_indices_by_name, + 1, textsecure__sender_key_message__number_ranges, + (ProtobufCMessageInit) textsecure__sender_key_message__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__sender_key_distribution_message__field_descriptors[4] = +{ + { + "id", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SenderKeyDistributionMessage, has_id), + offsetof(Textsecure__SenderKeyDistributionMessage, id), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "iteration", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__SenderKeyDistributionMessage, has_iteration), + offsetof(Textsecure__SenderKeyDistributionMessage, iteration), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "chainKey", + 3, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SenderKeyDistributionMessage, has_chainkey), + offsetof(Textsecure__SenderKeyDistributionMessage, chainkey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "signingKey", + 4, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__SenderKeyDistributionMessage, has_signingkey), + offsetof(Textsecure__SenderKeyDistributionMessage, signingkey), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__sender_key_distribution_message__field_indices_by_name[] = { + 2, /* field[2] = chainKey */ + 0, /* field[0] = id */ + 1, /* field[1] = iteration */ + 3, /* field[3] = signingKey */ +}; +static const ProtobufCIntRange textsecure__sender_key_distribution_message__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 4 } +}; +const ProtobufCMessageDescriptor textsecure__sender_key_distribution_message__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.SenderKeyDistributionMessage", + "SenderKeyDistributionMessage", + "Textsecure__SenderKeyDistributionMessage", + "textsecure", + sizeof(Textsecure__SenderKeyDistributionMessage), + 4, + textsecure__sender_key_distribution_message__field_descriptors, + textsecure__sender_key_distribution_message__field_indices_by_name, + 1, textsecure__sender_key_distribution_message__number_ranges, + (ProtobufCMessageInit) textsecure__sender_key_distribution_message__init, + NULL,NULL,NULL /* reserved[123] */ +}; +static const ProtobufCFieldDescriptor textsecure__device_consistency_code_message__field_descriptors[2] = +{ + { + "generation", + 1, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_UINT32, + offsetof(Textsecure__DeviceConsistencyCodeMessage, has_generation), + offsetof(Textsecure__DeviceConsistencyCodeMessage, generation), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, + { + "signature", + 2, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_TYPE_BYTES, + offsetof(Textsecure__DeviceConsistencyCodeMessage, has_signature), + offsetof(Textsecure__DeviceConsistencyCodeMessage, signature), + NULL, + NULL, + 0, /* flags */ + 0,NULL,NULL /* reserved1,reserved2, etc */ + }, +}; +static const unsigned textsecure__device_consistency_code_message__field_indices_by_name[] = { + 0, /* field[0] = generation */ + 1, /* field[1] = signature */ +}; +static const ProtobufCIntRange textsecure__device_consistency_code_message__number_ranges[1 + 1] = +{ + { 1, 0 }, + { 0, 2 } +}; +const ProtobufCMessageDescriptor textsecure__device_consistency_code_message__descriptor = +{ + PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC, + "textsecure.DeviceConsistencyCodeMessage", + "DeviceConsistencyCodeMessage", + "Textsecure__DeviceConsistencyCodeMessage", + "textsecure", + sizeof(Textsecure__DeviceConsistencyCodeMessage), + 2, + textsecure__device_consistency_code_message__field_descriptors, + textsecure__device_consistency_code_message__field_indices_by_name, + 1, textsecure__device_consistency_code_message__number_ranges, + (ProtobufCMessageInit) textsecure__device_consistency_code_message__init, + NULL,NULL,NULL /* reserved[123] */ +}; diff --git a/Sources/libsignal/WhisperTextProtocol.pb-c.h b/Sources/libsignal/WhisperTextProtocol.pb-c.h new file mode 100755 index 0000000..287cfde --- /dev/null +++ b/Sources/libsignal/WhisperTextProtocol.pb-c.h @@ -0,0 +1,286 @@ +/* Generated by the protocol buffer compiler. DO NOT EDIT! */ +/* Generated from: WhisperTextProtocol.proto */ + +#ifndef PROTOBUF_C_WhisperTextProtocol_2eproto__INCLUDED +#define PROTOBUF_C_WhisperTextProtocol_2eproto__INCLUDED + +#include "protobuf-c/protobuf-c.h" + +PROTOBUF_C__BEGIN_DECLS + +#if PROTOBUF_C_VERSION_NUMBER < 1000000 +# error This file was generated by a newer version of protoc-c which is incompatible with your libprotobuf-c headers. Please update your headers. +#elif 1002001 < PROTOBUF_C_MIN_COMPILER_VERSION +# error This file was generated by an older version of protoc-c which is incompatible with your libprotobuf-c headers. Please regenerate this file with a newer version of protoc-c. +#endif + + +typedef struct _Textsecure__SignalMessage Textsecure__SignalMessage; +typedef struct _Textsecure__PreKeySignalMessage Textsecure__PreKeySignalMessage; +typedef struct _Textsecure__KeyExchangeMessage Textsecure__KeyExchangeMessage; +typedef struct _Textsecure__SenderKeyMessage Textsecure__SenderKeyMessage; +typedef struct _Textsecure__SenderKeyDistributionMessage Textsecure__SenderKeyDistributionMessage; +typedef struct _Textsecure__DeviceConsistencyCodeMessage Textsecure__DeviceConsistencyCodeMessage; + + +/* --- enums --- */ + + +/* --- messages --- */ + +struct _Textsecure__SignalMessage +{ + ProtobufCMessage base; + protobuf_c_boolean has_ratchetkey; + ProtobufCBinaryData ratchetkey; + protobuf_c_boolean has_counter; + uint32_t counter; + protobuf_c_boolean has_previouscounter; + uint32_t previouscounter; + protobuf_c_boolean has_ciphertext; + ProtobufCBinaryData ciphertext; +}; +#define TEXTSECURE__SIGNAL_MESSAGE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__signal_message__descriptor) \ + , 0,{0,NULL}, 0,0, 0,0, 0,{0,NULL} } + + +struct _Textsecure__PreKeySignalMessage +{ + ProtobufCMessage base; + protobuf_c_boolean has_registrationid; + uint32_t registrationid; + protobuf_c_boolean has_prekeyid; + uint32_t prekeyid; + protobuf_c_boolean has_signedprekeyid; + uint32_t signedprekeyid; + protobuf_c_boolean has_basekey; + ProtobufCBinaryData basekey; + protobuf_c_boolean has_identitykey; + ProtobufCBinaryData identitykey; + /* + * SignalMessage + */ + protobuf_c_boolean has_message; + ProtobufCBinaryData message; +}; +#define TEXTSECURE__PRE_KEY_SIGNAL_MESSAGE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__pre_key_signal_message__descriptor) \ + , 0,0, 0,0, 0,0, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL} } + + +struct _Textsecure__KeyExchangeMessage +{ + ProtobufCMessage base; + protobuf_c_boolean has_id; + uint32_t id; + protobuf_c_boolean has_basekey; + ProtobufCBinaryData basekey; + protobuf_c_boolean has_ratchetkey; + ProtobufCBinaryData ratchetkey; + protobuf_c_boolean has_identitykey; + ProtobufCBinaryData identitykey; + protobuf_c_boolean has_basekeysignature; + ProtobufCBinaryData basekeysignature; +}; +#define TEXTSECURE__KEY_EXCHANGE_MESSAGE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__key_exchange_message__descriptor) \ + , 0,0, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL}, 0,{0,NULL} } + + +struct _Textsecure__SenderKeyMessage +{ + ProtobufCMessage base; + protobuf_c_boolean has_id; + uint32_t id; + protobuf_c_boolean has_iteration; + uint32_t iteration; + protobuf_c_boolean has_ciphertext; + ProtobufCBinaryData ciphertext; +}; +#define TEXTSECURE__SENDER_KEY_MESSAGE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__sender_key_message__descriptor) \ + , 0,0, 0,0, 0,{0,NULL} } + + +struct _Textsecure__SenderKeyDistributionMessage +{ + ProtobufCMessage base; + protobuf_c_boolean has_id; + uint32_t id; + protobuf_c_boolean has_iteration; + uint32_t iteration; + protobuf_c_boolean has_chainkey; + ProtobufCBinaryData chainkey; + protobuf_c_boolean has_signingkey; + ProtobufCBinaryData signingkey; +}; +#define TEXTSECURE__SENDER_KEY_DISTRIBUTION_MESSAGE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__sender_key_distribution_message__descriptor) \ + , 0,0, 0,0, 0,{0,NULL}, 0,{0,NULL} } + + +struct _Textsecure__DeviceConsistencyCodeMessage +{ + ProtobufCMessage base; + protobuf_c_boolean has_generation; + uint32_t generation; + protobuf_c_boolean has_signature; + ProtobufCBinaryData signature; +}; +#define TEXTSECURE__DEVICE_CONSISTENCY_CODE_MESSAGE__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&textsecure__device_consistency_code_message__descriptor) \ + , 0,0, 0,{0,NULL} } + + +/* Textsecure__SignalMessage methods */ +void textsecure__signal_message__init + (Textsecure__SignalMessage *message); +size_t textsecure__signal_message__get_packed_size + (const Textsecure__SignalMessage *message); +size_t textsecure__signal_message__pack + (const Textsecure__SignalMessage *message, + uint8_t *out); +size_t textsecure__signal_message__pack_to_buffer + (const Textsecure__SignalMessage *message, + ProtobufCBuffer *buffer); +Textsecure__SignalMessage * + textsecure__signal_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__signal_message__free_unpacked + (Textsecure__SignalMessage *message, + ProtobufCAllocator *allocator); +/* Textsecure__PreKeySignalMessage methods */ +void textsecure__pre_key_signal_message__init + (Textsecure__PreKeySignalMessage *message); +size_t textsecure__pre_key_signal_message__get_packed_size + (const Textsecure__PreKeySignalMessage *message); +size_t textsecure__pre_key_signal_message__pack + (const Textsecure__PreKeySignalMessage *message, + uint8_t *out); +size_t textsecure__pre_key_signal_message__pack_to_buffer + (const Textsecure__PreKeySignalMessage *message, + ProtobufCBuffer *buffer); +Textsecure__PreKeySignalMessage * + textsecure__pre_key_signal_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__pre_key_signal_message__free_unpacked + (Textsecure__PreKeySignalMessage *message, + ProtobufCAllocator *allocator); +/* Textsecure__KeyExchangeMessage methods */ +void textsecure__key_exchange_message__init + (Textsecure__KeyExchangeMessage *message); +size_t textsecure__key_exchange_message__get_packed_size + (const Textsecure__KeyExchangeMessage *message); +size_t textsecure__key_exchange_message__pack + (const Textsecure__KeyExchangeMessage *message, + uint8_t *out); +size_t textsecure__key_exchange_message__pack_to_buffer + (const Textsecure__KeyExchangeMessage *message, + ProtobufCBuffer *buffer); +Textsecure__KeyExchangeMessage * + textsecure__key_exchange_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__key_exchange_message__free_unpacked + (Textsecure__KeyExchangeMessage *message, + ProtobufCAllocator *allocator); +/* Textsecure__SenderKeyMessage methods */ +void textsecure__sender_key_message__init + (Textsecure__SenderKeyMessage *message); +size_t textsecure__sender_key_message__get_packed_size + (const Textsecure__SenderKeyMessage *message); +size_t textsecure__sender_key_message__pack + (const Textsecure__SenderKeyMessage *message, + uint8_t *out); +size_t textsecure__sender_key_message__pack_to_buffer + (const Textsecure__SenderKeyMessage *message, + ProtobufCBuffer *buffer); +Textsecure__SenderKeyMessage * + textsecure__sender_key_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__sender_key_message__free_unpacked + (Textsecure__SenderKeyMessage *message, + ProtobufCAllocator *allocator); +/* Textsecure__SenderKeyDistributionMessage methods */ +void textsecure__sender_key_distribution_message__init + (Textsecure__SenderKeyDistributionMessage *message); +size_t textsecure__sender_key_distribution_message__get_packed_size + (const Textsecure__SenderKeyDistributionMessage *message); +size_t textsecure__sender_key_distribution_message__pack + (const Textsecure__SenderKeyDistributionMessage *message, + uint8_t *out); +size_t textsecure__sender_key_distribution_message__pack_to_buffer + (const Textsecure__SenderKeyDistributionMessage *message, + ProtobufCBuffer *buffer); +Textsecure__SenderKeyDistributionMessage * + textsecure__sender_key_distribution_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__sender_key_distribution_message__free_unpacked + (Textsecure__SenderKeyDistributionMessage *message, + ProtobufCAllocator *allocator); +/* Textsecure__DeviceConsistencyCodeMessage methods */ +void textsecure__device_consistency_code_message__init + (Textsecure__DeviceConsistencyCodeMessage *message); +size_t textsecure__device_consistency_code_message__get_packed_size + (const Textsecure__DeviceConsistencyCodeMessage *message); +size_t textsecure__device_consistency_code_message__pack + (const Textsecure__DeviceConsistencyCodeMessage *message, + uint8_t *out); +size_t textsecure__device_consistency_code_message__pack_to_buffer + (const Textsecure__DeviceConsistencyCodeMessage *message, + ProtobufCBuffer *buffer); +Textsecure__DeviceConsistencyCodeMessage * + textsecure__device_consistency_code_message__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +void textsecure__device_consistency_code_message__free_unpacked + (Textsecure__DeviceConsistencyCodeMessage *message, + ProtobufCAllocator *allocator); +/* --- per-message closures --- */ + +typedef void (*Textsecure__SignalMessage_Closure) + (const Textsecure__SignalMessage *message, + void *closure_data); +typedef void (*Textsecure__PreKeySignalMessage_Closure) + (const Textsecure__PreKeySignalMessage *message, + void *closure_data); +typedef void (*Textsecure__KeyExchangeMessage_Closure) + (const Textsecure__KeyExchangeMessage *message, + void *closure_data); +typedef void (*Textsecure__SenderKeyMessage_Closure) + (const Textsecure__SenderKeyMessage *message, + void *closure_data); +typedef void (*Textsecure__SenderKeyDistributionMessage_Closure) + (const Textsecure__SenderKeyDistributionMessage *message, + void *closure_data); +typedef void (*Textsecure__DeviceConsistencyCodeMessage_Closure) + (const Textsecure__DeviceConsistencyCodeMessage *message, + void *closure_data); + +/* --- services --- */ + + +/* --- descriptors --- */ + +extern const ProtobufCMessageDescriptor textsecure__signal_message__descriptor; +extern const ProtobufCMessageDescriptor textsecure__pre_key_signal_message__descriptor; +extern const ProtobufCMessageDescriptor textsecure__key_exchange_message__descriptor; +extern const ProtobufCMessageDescriptor textsecure__sender_key_message__descriptor; +extern const ProtobufCMessageDescriptor textsecure__sender_key_distribution_message__descriptor; +extern const ProtobufCMessageDescriptor textsecure__device_consistency_code_message__descriptor; + +PROTOBUF_C__END_DECLS + + +#endif /* PROTOBUF_C_WhisperTextProtocol_2eproto__INCLUDED */ diff --git a/Sources/libsignal/curve.c b/Sources/libsignal/curve.c new file mode 100755 index 0000000..1388fd1 --- /dev/null +++ b/Sources/libsignal/curve.c @@ -0,0 +1,665 @@ +#include "curve.h" + +#include +#include +#include +#include "protobuf-c/protobuf-c.h" + +#include "curve25519/curve25519-donna.h" +#include "curve25519/ed25519/additions/curve_sigs.h" +#include "curve25519/ed25519/additions/generalized/gen_x.h" +#include "curve25519/ed25519/tests/internal_fast_tests.h" +#include "signal_protocol_internal.h" +#include "signal_utarray.h" + +#define DJB_TYPE 0x05 +#define DJB_KEY_LEN 32 +#define VRF_VERIFY_LEN 32 + +struct ec_public_key +{ + signal_type_base base; + uint8_t data[DJB_KEY_LEN]; +}; + +struct ec_private_key +{ + signal_type_base base; + uint8_t data[DJB_KEY_LEN]; +}; + +struct ec_key_pair +{ + signal_type_base base; + ec_public_key *public_key; + ec_private_key *private_key; +}; + +struct ec_public_key_list +{ + UT_array *values; +}; + +int curve_internal_fast_tests(int silent) +{ + if (all_fast_tests(silent) != 0) + return SG_ERR_UNKNOWN; + return 0; +} + +int curve_decode_point(ec_public_key **public_key, const uint8_t *key_data, size_t key_len, signal_context *global_context) +{ + ec_public_key *key = 0; + + if(key_len > 0 && key_data[0] != DJB_TYPE) { + signal_log(global_context, SG_LOG_ERROR, "Invalid key type: %d", key_data[0]); + return SG_ERR_INVALID_KEY; + } + + if(key_len != DJB_KEY_LEN + 1) { + signal_log(global_context, SG_LOG_ERROR, "Invalid key length: %d", key_len); + return SG_ERR_INVALID_KEY; + } + + key = malloc(sizeof(ec_public_key)); + if(!key) { + return SG_ERR_NOMEM; + } + + SIGNAL_INIT(key, ec_public_key_destroy); + + memcpy(key->data, key_data + 1, DJB_KEY_LEN); + + *public_key = key; + + return 0; +} + +int ec_public_key_compare(const ec_public_key *key1, const ec_public_key *key2) +{ + if(key1 == key2) { + return 0; + } + else if(key1 == 0 && key2 != 0) { + return -1; + } + else if(key1 != 0 && key2 == 0) { + return 1; + } + else { + return signal_constant_memcmp(key1->data, key2->data, DJB_KEY_LEN); + } +} + +int ec_public_key_memcmp(const ec_public_key *key1, const ec_public_key *key2) +{ + if(key1 == key2) { + return 0; + } + else if(key1 == 0 && key2 != 0) { + return -1; + } + else if(key1 != 0 && key2 == 0) { + return 1; + } + else { + return memcmp(key1->data, key2->data, DJB_KEY_LEN); + } +} + +int ec_public_key_serialize(signal_buffer **buffer, const ec_public_key *key) +{ + signal_buffer *buf = 0; + uint8_t *data = 0; + + if(!key) { + return SG_ERR_INVAL; + } + + buf = signal_buffer_alloc(sizeof(uint8_t) * (DJB_KEY_LEN + 1)); + if(!buf) { + return SG_ERR_NOMEM; + } + + data = signal_buffer_data(buf); + data[0] = DJB_TYPE; + memcpy(data + 1, key->data, DJB_KEY_LEN); + + *buffer = buf; + + return 0; +} + +int ec_public_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_public_key *key) +{ + size_t len = 0; + uint8_t *data = 0; + + assert(buffer); + assert(key); + + len = sizeof(uint8_t) * (DJB_KEY_LEN + 1); + data = malloc(len); + if(!data) { + return SG_ERR_NOMEM; + } + + data[0] = DJB_TYPE; + memcpy(data + 1, key->data, DJB_KEY_LEN); + + buffer->data = data; + buffer->len = len; + return 0; +} + +void ec_public_key_destroy(signal_type_base *type) +{ + ec_public_key *public_key = (ec_public_key *)type; + free(public_key); +} + +int curve_decode_private_point(ec_private_key **private_key, const uint8_t *key_data, size_t key_len, signal_context *global_context) +{ + ec_private_key *key = 0; + + if(key_len != DJB_KEY_LEN) { + signal_log(global_context, SG_LOG_ERROR, "Invalid key length: %d", key_len); + return SG_ERR_INVALID_KEY; + } + + key = malloc(sizeof(ec_private_key)); + if(!key) { + return SG_ERR_NOMEM; + } + + SIGNAL_INIT(key, ec_private_key_destroy); + + memcpy(key->data, key_data, DJB_KEY_LEN); + + *private_key = key; + + return 0; +} + +int ec_private_key_compare(const ec_private_key *key1, const ec_private_key *key2) +{ + if(key1 == key2) { + return 0; + } + else if(key1 == 0 && key2 != 0) { + return -1; + } + else if(key1 != 0 && key2 == 0) { + return 1; + } + else { + return signal_constant_memcmp(key1->data, key2->data, DJB_KEY_LEN); + } +} + +int ec_private_key_serialize(signal_buffer **buffer, const ec_private_key *key) +{ + signal_buffer *buf = 0; + uint8_t *data = 0 ; + + buf = signal_buffer_alloc(sizeof(uint8_t) * DJB_KEY_LEN); + if(!buf) { + return SG_ERR_NOMEM; + } + + data = signal_buffer_data(buf); + memcpy(data, key->data, DJB_KEY_LEN); + + *buffer = buf; + + return 0; +} + +int ec_private_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_private_key *key) +{ + size_t len = 0; + uint8_t *data = 0; + + assert(buffer); + assert(key); + + len = sizeof(uint8_t) * DJB_KEY_LEN; + data = malloc(len); + if(!data) { + return SG_ERR_NOMEM; + } + + memcpy(data, key->data, DJB_KEY_LEN); + + buffer->data = data; + buffer->len = len; + return 0; +} + +void ec_private_key_destroy(signal_type_base *type) +{ + ec_private_key *private_key = (ec_private_key *)type; + signal_explicit_bzero(private_key, sizeof(ec_private_key)); + free(private_key); +} + +int ec_key_pair_create(ec_key_pair **key_pair, ec_public_key *public_key, ec_private_key *private_key) +{ + ec_key_pair *result = malloc(sizeof(ec_key_pair)); + if(!result) { + return SG_ERR_NOMEM; + } + + SIGNAL_INIT(result, ec_key_pair_destroy); + result->public_key = public_key; + SIGNAL_REF(public_key); + result->private_key = private_key; + SIGNAL_REF(private_key); + + *key_pair = result; + + return 0; +} + +ec_public_key *ec_key_pair_get_public(const ec_key_pair *key_pair) +{ + return key_pair->public_key; +} + +ec_private_key *ec_key_pair_get_private(const ec_key_pair *key_pair) +{ + return key_pair->private_key; +} + +void ec_key_pair_destroy(signal_type_base *type) +{ + ec_key_pair *key_pair = (ec_key_pair *)type; + SIGNAL_UNREF(key_pair->public_key); + SIGNAL_UNREF(key_pair->private_key); + free(key_pair); +} + +int curve_generate_private_key(signal_context *context, ec_private_key **private_key) +{ + int result = 0; + ec_private_key *key = 0; + + assert(context); + + key = malloc(sizeof(ec_private_key)); + if(!key) { + result = SG_ERR_NOMEM; + goto complete; + } + + SIGNAL_INIT(key, ec_private_key_destroy); + + result = signal_crypto_random(context, key->data, DJB_KEY_LEN); + if(result < 0) { + goto complete; + } + + key->data[0] &= 248; + key->data[31] &= 127; + key->data[31] |= 64; + +complete: + if(result < 0) { + if(key) { + SIGNAL_UNREF(key); + } + } + else { + *private_key = key; + } + + return result; +} + +int curve_generate_public_key(ec_public_key **public_key, const ec_private_key *private_key) +{ + static const uint8_t basepoint[32] = {9}; + int result = 0; + + ec_public_key *key = malloc(sizeof(ec_public_key)); + if(!key) { + return SG_ERR_NOMEM; + } + + SIGNAL_INIT(key, ec_public_key_destroy); + + result = curve25519_donna(key->data, private_key->data, basepoint); + + if(result == 0) { + *public_key = key; + return 0; + } + else { + if(key) { + SIGNAL_UNREF(key); + } + return SG_ERR_UNKNOWN; + } +} + +int curve_generate_key_pair(signal_context *context, ec_key_pair **key_pair) +{ + int result = 0; + ec_key_pair *pair_result = 0; + ec_private_key *key_private = 0; + ec_public_key *key_public = 0; + + assert(context); + + result = curve_generate_private_key(context, &key_private); + if(result < 0) { + goto complete; + } + + result = curve_generate_public_key(&key_public, key_private); + if(result < 0) { + goto complete; + } + + result = ec_key_pair_create(&pair_result, key_public, key_private); + if(result < 0) { + goto complete; + } + +complete: + if(key_public) { + SIGNAL_UNREF(key_public); + } + if(key_private) { + SIGNAL_UNREF(key_private); + } + + if(result < 0) { + if(pair_result) { + SIGNAL_UNREF(pair_result); + } + } + else { + *key_pair = pair_result; + } + + return result; +} + +ec_public_key_list *ec_public_key_list_alloc() +{ + int result = 0; + ec_public_key_list *list = malloc(sizeof(ec_public_key_list)); + if(!list) { + result = SG_ERR_NOMEM; + goto complete; + } + + memset(list, 0, sizeof(ec_public_key_list)); + + utarray_new(list->values, &ut_ptr_icd); + +complete: + if(result < 0) { + if(list) { + free(list); + } + return 0; + } + else { + return list; + } +} + +ec_public_key_list *ec_public_key_list_copy(const ec_public_key_list *list) +{ + int result = 0; + ec_public_key_list *result_list = 0; + unsigned int size; + unsigned int i; + ec_public_key **p; + + result_list = ec_public_key_list_alloc(); + if(!result_list) { + result = SG_ERR_NOMEM; + goto complete; + } + + size = utarray_len(list->values); + + utarray_reserve(result_list->values, size); + + for (i = 0; i < size; i++) { + p = (ec_public_key **)utarray_eltptr(list->values, i); + result = ec_public_key_list_push_back(result_list, *p); + if(result < 0) { + goto complete; + } + } + +complete: + if(result < 0) { + if(result_list) { + ec_public_key_list_free(result_list); + } + return 0; + } + else { + return result_list; + } +} + +int ec_public_key_list_push_back(ec_public_key_list *list, ec_public_key *value) +{ + int result = 0; + assert(list); + assert(value); + + utarray_push_back(list->values, &value); + SIGNAL_REF(value); + +complete: + return result; +} + +unsigned int ec_public_key_list_size(const ec_public_key_list *list) +{ + assert(list); + return utarray_len(list->values); +} + +ec_public_key *ec_public_key_list_at(const ec_public_key_list *list, unsigned int index) +{ + ec_public_key **value = 0; + + assert(list); + assert(index < utarray_len(list->values)); + + value = (ec_public_key **)utarray_eltptr(list->values, index); + + assert(*value); + + return *value; +} + +int ec_public_key_list_sort_comparator(const void *a, const void *b) +{ + const ec_public_key *key1 = *((const ec_public_key **)a); + const ec_public_key *key2 = *((const ec_public_key **)b); + return ec_public_key_memcmp(key1, key2); +} + +void ec_public_key_list_sort(ec_public_key_list *list) +{ + assert(list); + utarray_sort(list->values, ec_public_key_list_sort_comparator); +} + +void ec_public_key_list_free(ec_public_key_list *list) +{ + unsigned int size; + unsigned int i; + ec_public_key **p; + if(list) { + size = utarray_len(list->values); + for (i = 0; i < size; i++) { + p = (ec_public_key **)utarray_eltptr(list->values, i); + SIGNAL_UNREF(*p); + } + utarray_free(list->values); + free(list); + } +} + +int curve_calculate_agreement(uint8_t **shared_key_data, const ec_public_key *public_key, const ec_private_key *private_key) +{ + uint8_t *key = 0; + int result = 0; + + if(!public_key || !private_key) { + return SG_ERR_INVALID_KEY; + } + + key = malloc(DJB_KEY_LEN); + if(!key) { + return SG_ERR_NOMEM; + } + + result = curve25519_donna(key, private_key->data, public_key->data); + + if(result == 0) { + *shared_key_data = key; + return DJB_KEY_LEN; + } + else { + if(key) { + free(key); + } + return SG_ERR_UNKNOWN; + } +} + +int curve_verify_signature(const ec_public_key *signing_key, + const uint8_t *message_data, size_t message_len, + const uint8_t *signature_data, size_t signature_len) +{ + if(signature_len != CURVE_SIGNATURE_LEN) { + return SG_ERR_INVAL; + } + + return curve25519_verify(signature_data, signing_key->data, message_data, message_len) == 0; +} + +int curve_calculate_signature(signal_context *context, + signal_buffer **signature, + const ec_private_key *signing_key, + const uint8_t *message_data, size_t message_len) +{ + int result = 0; + uint8_t random_data[CURVE_SIGNATURE_LEN]; + signal_buffer *buffer = 0; + + result = signal_crypto_random(context, random_data, sizeof(random_data)); + if(result < 0) { + goto complete; + } + + buffer = signal_buffer_alloc(CURVE_SIGNATURE_LEN); + if(!buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = curve25519_sign(signal_buffer_data(buffer), signing_key->data, message_data, message_len, random_data); + +complete: + if(result < 0) { + if(buffer) { + signal_buffer_free(buffer); + } + } + else { + *signature = buffer; + } + return result; +} + +int curve_verify_vrf_signature(signal_context *context, + signal_buffer **vrf_output, + const ec_public_key *signing_key, + const uint8_t *message_data, size_t message_len, + const uint8_t *signature_data, size_t signature_len) +{ + int result = 0; + signal_buffer *buffer = 0; + + if(!signing_key) { + return SG_ERR_INVAL; + } + + if(!message_data || !signature_data || signature_len != VRF_SIGNATURE_LEN) { + signal_log(context, SG_LOG_ERROR, "Invalid message or signature format"); + return SG_ERR_VRF_SIG_VERIF_FAILED; + } + + buffer = signal_buffer_alloc(VRF_VERIFY_LEN); + if(!buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = generalized_xveddsa_25519_verify(signal_buffer_data(buffer), + signature_data, signing_key->data, + message_data, message_len, NULL, 0); + if(result != 0) { + signal_log(context, SG_LOG_ERROR, "Invalid signature"); + result = SG_ERR_VRF_SIG_VERIF_FAILED; + } + +complete: + if(result < 0) { + signal_buffer_free(buffer); + } + else { + *vrf_output = buffer; + } + return result; +} + +int curve_calculate_vrf_signature(signal_context *context, + signal_buffer **signature, + const ec_private_key *signing_key, + const uint8_t *message_data, size_t message_len) +{ + int result = 0; + uint8_t random_data[64]; + signal_buffer *buffer = 0; + + result = signal_crypto_random(context, random_data, sizeof(random_data)); + if(result < 0) { + goto complete; + } + + buffer = signal_buffer_alloc(VRF_SIGNATURE_LEN); + if(!buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = generalized_xveddsa_25519_sign(signal_buffer_data(buffer), + signing_key->data, + message_data, message_len, random_data, NULL, 0); + if(result != 0) { + signal_log(context, SG_LOG_ERROR, "Signature failed!"); + result = SG_ERR_UNKNOWN; + } + +complete: + if(result < 0) { + signal_buffer_free(buffer); + } + else { + *signature = buffer; + } + return result; +} diff --git a/Sources/libsignal/curve25519/curve25519-donna.c b/Sources/libsignal/curve25519/curve25519-donna.c new file mode 100755 index 0000000..f2c2ac5 --- /dev/null +++ b/Sources/libsignal/curve25519/curve25519-donna.c @@ -0,0 +1,870 @@ +/* Copyright 2008, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * curve25519-donna: Curve25519 elliptic curve, public key function + * + * http://code.google.com/p/curve25519-donna/ + * + * Adam Langley + * + * Derived from public domain C code by Daniel J. Bernstein + * + * More information about curve25519 can be found here + * http://cr.yp.to/ecdh.html + * + * djb's sample implementation of curve25519 is written in a special assembly + * language called qhasm and uses the floating point registers. + * + * This is, almost, a clean room reimplementation from the curve25519 paper. It + * uses many of the tricks described therein. Only the crecip function is taken + * from the sample implementation. */ + +#include +#include + +#ifdef _MSC_VER +#define inline __inline +#endif + +typedef uint8_t u8; +typedef int32_t s32; +typedef int64_t limb; + +/* Field element representation: + * + * Field elements are written as an array of signed, 64-bit limbs, least + * significant first. The value of the field element is: + * x[0] + 2^26·x[1] + x^51·x[2] + 2^102·x[3] + ... + * + * i.e. the limbs are 26, 25, 26, 25, ... bits wide. */ + +/* Sum two numbers: output += in */ +static void fsum(limb *output, const limb *in) { + unsigned i; + for (i = 0; i < 10; i += 2) { + output[0+i] = output[0+i] + in[0+i]; + output[1+i] = output[1+i] + in[1+i]; + } +} + +/* Find the difference of two numbers: output = in - output + * (note the order of the arguments!). */ +static void fdifference(limb *output, const limb *in) { + unsigned i; + for (i = 0; i < 10; ++i) { + output[i] = in[i] - output[i]; + } +} + +/* Multiply a number by a scalar: output = in * scalar */ +static void fscalar_product(limb *output, const limb *in, const limb scalar) { + unsigned i; + for (i = 0; i < 10; ++i) { + output[i] = in[i] * scalar; + } +} + +/* Multiply two numbers: output = in2 * in + * + * output must be distinct to both inputs. The inputs are reduced coefficient + * form, the output is not. + * + * output[x] <= 14 * the largest product of the input limbs. */ +static void fproduct(limb *output, const limb *in2, const limb *in) { + output[0] = ((limb) ((s32) in2[0])) * ((s32) in[0]); + output[1] = ((limb) ((s32) in2[0])) * ((s32) in[1]) + + ((limb) ((s32) in2[1])) * ((s32) in[0]); + output[2] = 2 * ((limb) ((s32) in2[1])) * ((s32) in[1]) + + ((limb) ((s32) in2[0])) * ((s32) in[2]) + + ((limb) ((s32) in2[2])) * ((s32) in[0]); + output[3] = ((limb) ((s32) in2[1])) * ((s32) in[2]) + + ((limb) ((s32) in2[2])) * ((s32) in[1]) + + ((limb) ((s32) in2[0])) * ((s32) in[3]) + + ((limb) ((s32) in2[3])) * ((s32) in[0]); + output[4] = ((limb) ((s32) in2[2])) * ((s32) in[2]) + + 2 * (((limb) ((s32) in2[1])) * ((s32) in[3]) + + ((limb) ((s32) in2[3])) * ((s32) in[1])) + + ((limb) ((s32) in2[0])) * ((s32) in[4]) + + ((limb) ((s32) in2[4])) * ((s32) in[0]); + output[5] = ((limb) ((s32) in2[2])) * ((s32) in[3]) + + ((limb) ((s32) in2[3])) * ((s32) in[2]) + + ((limb) ((s32) in2[1])) * ((s32) in[4]) + + ((limb) ((s32) in2[4])) * ((s32) in[1]) + + ((limb) ((s32) in2[0])) * ((s32) in[5]) + + ((limb) ((s32) in2[5])) * ((s32) in[0]); + output[6] = 2 * (((limb) ((s32) in2[3])) * ((s32) in[3]) + + ((limb) ((s32) in2[1])) * ((s32) in[5]) + + ((limb) ((s32) in2[5])) * ((s32) in[1])) + + ((limb) ((s32) in2[2])) * ((s32) in[4]) + + ((limb) ((s32) in2[4])) * ((s32) in[2]) + + ((limb) ((s32) in2[0])) * ((s32) in[6]) + + ((limb) ((s32) in2[6])) * ((s32) in[0]); + output[7] = ((limb) ((s32) in2[3])) * ((s32) in[4]) + + ((limb) ((s32) in2[4])) * ((s32) in[3]) + + ((limb) ((s32) in2[2])) * ((s32) in[5]) + + ((limb) ((s32) in2[5])) * ((s32) in[2]) + + ((limb) ((s32) in2[1])) * ((s32) in[6]) + + ((limb) ((s32) in2[6])) * ((s32) in[1]) + + ((limb) ((s32) in2[0])) * ((s32) in[7]) + + ((limb) ((s32) in2[7])) * ((s32) in[0]); + output[8] = ((limb) ((s32) in2[4])) * ((s32) in[4]) + + 2 * (((limb) ((s32) in2[3])) * ((s32) in[5]) + + ((limb) ((s32) in2[5])) * ((s32) in[3]) + + ((limb) ((s32) in2[1])) * ((s32) in[7]) + + ((limb) ((s32) in2[7])) * ((s32) in[1])) + + ((limb) ((s32) in2[2])) * ((s32) in[6]) + + ((limb) ((s32) in2[6])) * ((s32) in[2]) + + ((limb) ((s32) in2[0])) * ((s32) in[8]) + + ((limb) ((s32) in2[8])) * ((s32) in[0]); + output[9] = ((limb) ((s32) in2[4])) * ((s32) in[5]) + + ((limb) ((s32) in2[5])) * ((s32) in[4]) + + ((limb) ((s32) in2[3])) * ((s32) in[6]) + + ((limb) ((s32) in2[6])) * ((s32) in[3]) + + ((limb) ((s32) in2[2])) * ((s32) in[7]) + + ((limb) ((s32) in2[7])) * ((s32) in[2]) + + ((limb) ((s32) in2[1])) * ((s32) in[8]) + + ((limb) ((s32) in2[8])) * ((s32) in[1]) + + ((limb) ((s32) in2[0])) * ((s32) in[9]) + + ((limb) ((s32) in2[9])) * ((s32) in[0]); + output[10] = 2 * (((limb) ((s32) in2[5])) * ((s32) in[5]) + + ((limb) ((s32) in2[3])) * ((s32) in[7]) + + ((limb) ((s32) in2[7])) * ((s32) in[3]) + + ((limb) ((s32) in2[1])) * ((s32) in[9]) + + ((limb) ((s32) in2[9])) * ((s32) in[1])) + + ((limb) ((s32) in2[4])) * ((s32) in[6]) + + ((limb) ((s32) in2[6])) * ((s32) in[4]) + + ((limb) ((s32) in2[2])) * ((s32) in[8]) + + ((limb) ((s32) in2[8])) * ((s32) in[2]); + output[11] = ((limb) ((s32) in2[5])) * ((s32) in[6]) + + ((limb) ((s32) in2[6])) * ((s32) in[5]) + + ((limb) ((s32) in2[4])) * ((s32) in[7]) + + ((limb) ((s32) in2[7])) * ((s32) in[4]) + + ((limb) ((s32) in2[3])) * ((s32) in[8]) + + ((limb) ((s32) in2[8])) * ((s32) in[3]) + + ((limb) ((s32) in2[2])) * ((s32) in[9]) + + ((limb) ((s32) in2[9])) * ((s32) in[2]); + output[12] = ((limb) ((s32) in2[6])) * ((s32) in[6]) + + 2 * (((limb) ((s32) in2[5])) * ((s32) in[7]) + + ((limb) ((s32) in2[7])) * ((s32) in[5]) + + ((limb) ((s32) in2[3])) * ((s32) in[9]) + + ((limb) ((s32) in2[9])) * ((s32) in[3])) + + ((limb) ((s32) in2[4])) * ((s32) in[8]) + + ((limb) ((s32) in2[8])) * ((s32) in[4]); + output[13] = ((limb) ((s32) in2[6])) * ((s32) in[7]) + + ((limb) ((s32) in2[7])) * ((s32) in[6]) + + ((limb) ((s32) in2[5])) * ((s32) in[8]) + + ((limb) ((s32) in2[8])) * ((s32) in[5]) + + ((limb) ((s32) in2[4])) * ((s32) in[9]) + + ((limb) ((s32) in2[9])) * ((s32) in[4]); + output[14] = 2 * (((limb) ((s32) in2[7])) * ((s32) in[7]) + + ((limb) ((s32) in2[5])) * ((s32) in[9]) + + ((limb) ((s32) in2[9])) * ((s32) in[5])) + + ((limb) ((s32) in2[6])) * ((s32) in[8]) + + ((limb) ((s32) in2[8])) * ((s32) in[6]); + output[15] = ((limb) ((s32) in2[7])) * ((s32) in[8]) + + ((limb) ((s32) in2[8])) * ((s32) in[7]) + + ((limb) ((s32) in2[6])) * ((s32) in[9]) + + ((limb) ((s32) in2[9])) * ((s32) in[6]); + output[16] = ((limb) ((s32) in2[8])) * ((s32) in[8]) + + 2 * (((limb) ((s32) in2[7])) * ((s32) in[9]) + + ((limb) ((s32) in2[9])) * ((s32) in[7])); + output[17] = ((limb) ((s32) in2[8])) * ((s32) in[9]) + + ((limb) ((s32) in2[9])) * ((s32) in[8]); + output[18] = 2 * ((limb) ((s32) in2[9])) * ((s32) in[9]); +} + +/* Reduce a long form to a short form by taking the input mod 2^255 - 19. + * + * On entry: |output[i]| < 14*2^54 + * On exit: |output[0..8]| < 280*2^54 */ +static void freduce_degree(limb *output) { + /* Each of these shifts and adds ends up multiplying the value by 19. + * + * For output[0..8], the absolute entry value is < 14*2^54 and we add, at + * most, 19*14*2^54 thus, on exit, |output[0..8]| < 280*2^54. */ + output[8] += output[18] << 4; + output[8] += output[18] << 1; + output[8] += output[18]; + output[7] += output[17] << 4; + output[7] += output[17] << 1; + output[7] += output[17]; + output[6] += output[16] << 4; + output[6] += output[16] << 1; + output[6] += output[16]; + output[5] += output[15] << 4; + output[5] += output[15] << 1; + output[5] += output[15]; + output[4] += output[14] << 4; + output[4] += output[14] << 1; + output[4] += output[14]; + output[3] += output[13] << 4; + output[3] += output[13] << 1; + output[3] += output[13]; + output[2] += output[12] << 4; + output[2] += output[12] << 1; + output[2] += output[12]; + output[1] += output[11] << 4; + output[1] += output[11] << 1; + output[1] += output[11]; + output[0] += output[10] << 4; + output[0] += output[10] << 1; + output[0] += output[10]; +} + +#if (-1 & 3) != 3 +#error "This code only works on a two's complement system" +#endif + +/* return v / 2^26, using only shifts and adds. + * + * On entry: v can take any value. */ +static inline limb +div_by_2_26(const limb v) +{ + /* High word of v; no shift needed. */ + const uint32_t highword = (uint32_t) (((uint64_t) v) >> 32); + /* Set to all 1s if v was negative; else set to 0s. */ + const int32_t sign = ((int32_t) highword) >> 31; + /* Set to 0x3ffffff if v was negative; else set to 0. */ + const int32_t roundoff = ((uint32_t) sign) >> 6; + /* Should return v / (1<<26) */ + return (v + roundoff) >> 26; +} + +/* return v / (2^25), using only shifts and adds. + * + * On entry: v can take any value. */ +static inline limb +div_by_2_25(const limb v) +{ + /* High word of v; no shift needed*/ + const uint32_t highword = (uint32_t) (((uint64_t) v) >> 32); + /* Set to all 1s if v was negative; else set to 0s. */ + const int32_t sign = ((int32_t) highword) >> 31; + /* Set to 0x1ffffff if v was negative; else set to 0. */ + const int32_t roundoff = ((uint32_t) sign) >> 7; + /* Should return v / (1<<25) */ + return (v + roundoff) >> 25; +} + +/* return v / (2^25), using only shifts and adds. + * + * On entry: v can take any value. */ +static inline s32 +div_s32_by_2_25(const s32 v) +{ + const s32 roundoff = ((uint32_t)(v >> 31)) >> 7; + return (v + roundoff) >> 25; +} + +/* Reduce all coefficients of the short form input so that |x| < 2^26. + * + * On entry: |output[i]| < 280*2^54 */ +static void freduce_coefficients(limb *output) { + unsigned i; + + output[10] = 0; + + for (i = 0; i < 10; i += 2) { + limb over = div_by_2_26(output[i]); + /* The entry condition (that |output[i]| < 280*2^54) means that over is, at + * most, 280*2^28 in the first iteration of this loop. This is added to the + * next limb and we can approximate the resulting bound of that limb by + * 281*2^54. */ + output[i] -= over << 26; + output[i+1] += over; + + /* For the first iteration, |output[i+1]| < 281*2^54, thus |over| < + * 281*2^29. When this is added to the next limb, the resulting bound can + * be approximated as 281*2^54. + * + * For subsequent iterations of the loop, 281*2^54 remains a conservative + * bound and no overflow occurs. */ + over = div_by_2_25(output[i+1]); + output[i+1] -= over << 25; + output[i+2] += over; + } + /* Now |output[10]| < 281*2^29 and all other coefficients are reduced. */ + output[0] += output[10] << 4; + output[0] += output[10] << 1; + output[0] += output[10]; + + output[10] = 0; + + /* Now output[1..9] are reduced, and |output[0]| < 2^26 + 19*281*2^29 + * So |over| will be no more than 2^16. */ + { + limb over = div_by_2_26(output[0]); + output[0] -= over << 26; + output[1] += over; + } + + /* Now output[0,2..9] are reduced, and |output[1]| < 2^25 + 2^16 < 2^26. The + * bound on |output[1]| is sufficient to meet our needs. */ +} + +/* A helpful wrapper around fproduct: output = in * in2. + * + * On entry: |in[i]| < 2^27 and |in2[i]| < 2^27. + * + * output must be distinct to both inputs. The output is reduced degree + * (indeed, one need only provide storage for 10 limbs) and |output[i]| < 2^26. */ +static void +fmul(limb *output, const limb *in, const limb *in2) { + limb t[19]; + fproduct(t, in, in2); + /* |t[i]| < 14*2^54 */ + freduce_degree(t); + freduce_coefficients(t); + /* |t[i]| < 2^26 */ + memcpy(output, t, sizeof(limb) * 10); +} + +/* Square a number: output = in**2 + * + * output must be distinct from the input. The inputs are reduced coefficient + * form, the output is not. + * + * output[x] <= 14 * the largest product of the input limbs. */ +static void fsquare_inner(limb *output, const limb *in) { + output[0] = ((limb) ((s32) in[0])) * ((s32) in[0]); + output[1] = 2 * ((limb) ((s32) in[0])) * ((s32) in[1]); + output[2] = 2 * (((limb) ((s32) in[1])) * ((s32) in[1]) + + ((limb) ((s32) in[0])) * ((s32) in[2])); + output[3] = 2 * (((limb) ((s32) in[1])) * ((s32) in[2]) + + ((limb) ((s32) in[0])) * ((s32) in[3])); + output[4] = ((limb) ((s32) in[2])) * ((s32) in[2]) + + 4 * ((limb) ((s32) in[1])) * ((s32) in[3]) + + 2 * ((limb) ((s32) in[0])) * ((s32) in[4]); + output[5] = 2 * (((limb) ((s32) in[2])) * ((s32) in[3]) + + ((limb) ((s32) in[1])) * ((s32) in[4]) + + ((limb) ((s32) in[0])) * ((s32) in[5])); + output[6] = 2 * (((limb) ((s32) in[3])) * ((s32) in[3]) + + ((limb) ((s32) in[2])) * ((s32) in[4]) + + ((limb) ((s32) in[0])) * ((s32) in[6]) + + 2 * ((limb) ((s32) in[1])) * ((s32) in[5])); + output[7] = 2 * (((limb) ((s32) in[3])) * ((s32) in[4]) + + ((limb) ((s32) in[2])) * ((s32) in[5]) + + ((limb) ((s32) in[1])) * ((s32) in[6]) + + ((limb) ((s32) in[0])) * ((s32) in[7])); + output[8] = ((limb) ((s32) in[4])) * ((s32) in[4]) + + 2 * (((limb) ((s32) in[2])) * ((s32) in[6]) + + ((limb) ((s32) in[0])) * ((s32) in[8]) + + 2 * (((limb) ((s32) in[1])) * ((s32) in[7]) + + ((limb) ((s32) in[3])) * ((s32) in[5]))); + output[9] = 2 * (((limb) ((s32) in[4])) * ((s32) in[5]) + + ((limb) ((s32) in[3])) * ((s32) in[6]) + + ((limb) ((s32) in[2])) * ((s32) in[7]) + + ((limb) ((s32) in[1])) * ((s32) in[8]) + + ((limb) ((s32) in[0])) * ((s32) in[9])); + output[10] = 2 * (((limb) ((s32) in[5])) * ((s32) in[5]) + + ((limb) ((s32) in[4])) * ((s32) in[6]) + + ((limb) ((s32) in[2])) * ((s32) in[8]) + + 2 * (((limb) ((s32) in[3])) * ((s32) in[7]) + + ((limb) ((s32) in[1])) * ((s32) in[9]))); + output[11] = 2 * (((limb) ((s32) in[5])) * ((s32) in[6]) + + ((limb) ((s32) in[4])) * ((s32) in[7]) + + ((limb) ((s32) in[3])) * ((s32) in[8]) + + ((limb) ((s32) in[2])) * ((s32) in[9])); + output[12] = ((limb) ((s32) in[6])) * ((s32) in[6]) + + 2 * (((limb) ((s32) in[4])) * ((s32) in[8]) + + 2 * (((limb) ((s32) in[5])) * ((s32) in[7]) + + ((limb) ((s32) in[3])) * ((s32) in[9]))); + output[13] = 2 * (((limb) ((s32) in[6])) * ((s32) in[7]) + + ((limb) ((s32) in[5])) * ((s32) in[8]) + + ((limb) ((s32) in[4])) * ((s32) in[9])); + output[14] = 2 * (((limb) ((s32) in[7])) * ((s32) in[7]) + + ((limb) ((s32) in[6])) * ((s32) in[8]) + + 2 * ((limb) ((s32) in[5])) * ((s32) in[9])); + output[15] = 2 * (((limb) ((s32) in[7])) * ((s32) in[8]) + + ((limb) ((s32) in[6])) * ((s32) in[9])); + output[16] = ((limb) ((s32) in[8])) * ((s32) in[8]) + + 4 * ((limb) ((s32) in[7])) * ((s32) in[9]); + output[17] = 2 * ((limb) ((s32) in[8])) * ((s32) in[9]); + output[18] = 2 * ((limb) ((s32) in[9])) * ((s32) in[9]); +} + +/* fsquare sets output = in^2. + * + * On entry: The |in| argument is in reduced coefficients form and |in[i]| < + * 2^27. + * + * On exit: The |output| argument is in reduced coefficients form (indeed, one + * need only provide storage for 10 limbs) and |out[i]| < 2^26. */ +static void +fsquare(limb *output, const limb *in) { + limb t[19]; + fsquare_inner(t, in); + /* |t[i]| < 14*2^54 because the largest product of two limbs will be < + * 2^(27+27) and fsquare_inner adds together, at most, 14 of those + * products. */ + freduce_degree(t); + freduce_coefficients(t); + /* |t[i]| < 2^26 */ + memcpy(output, t, sizeof(limb) * 10); +} + +/* Take a little-endian, 32-byte number and expand it into polynomial form */ +static void +fexpand(limb *output, const u8 *input) { +#define F(n,start,shift,mask) \ + output[n] = ((((limb) input[start + 0]) | \ + ((limb) input[start + 1]) << 8 | \ + ((limb) input[start + 2]) << 16 | \ + ((limb) input[start + 3]) << 24) >> shift) & mask; + F(0, 0, 0, 0x3ffffff); + F(1, 3, 2, 0x1ffffff); + F(2, 6, 3, 0x3ffffff); + F(3, 9, 5, 0x1ffffff); + F(4, 12, 6, 0x3ffffff); + F(5, 16, 0, 0x1ffffff); + F(6, 19, 1, 0x3ffffff); + F(7, 22, 3, 0x1ffffff); + F(8, 25, 4, 0x3ffffff); + F(9, 28, 6, 0x1ffffff); +#undef F +} + +#if (-32 >> 1) != -16 +#error "This code only works when >> does sign-extension on negative numbers" +#endif + +/* s32_eq returns 0xffffffff iff a == b and zero otherwise. */ +static s32 s32_eq(s32 a, s32 b) { + a = ~(a ^ b); + a &= a << 16; + a &= a << 8; + a &= a << 4; + a &= a << 2; + a &= a << 1; + return a >> 31; +} + +/* s32_gte returns 0xffffffff if a >= b and zero otherwise, where a and b are + * both non-negative. */ +static s32 s32_gte(s32 a, s32 b) { + a -= b; + /* a >= 0 iff a >= b. */ + return ~(a >> 31); +} + +/* Take a fully reduced polynomial form number and contract it into a + * little-endian, 32-byte array. + * + * On entry: |input_limbs[i]| < 2^26 */ +static void +fcontract(u8 *output, limb *input_limbs) { + int i; + int j; + s32 input[10]; + s32 mask; + + /* |input_limbs[i]| < 2^26, so it's valid to convert to an s32. */ + for (i = 0; i < 10; i++) { + input[i] = input_limbs[i]; + } + + for (j = 0; j < 2; ++j) { + for (i = 0; i < 9; ++i) { + if ((i & 1) == 1) { + /* This calculation is a time-invariant way to make input[i] + * non-negative by borrowing from the next-larger limb. */ + const s32 mask = input[i] >> 31; + const s32 carry = -((input[i] & mask) >> 25); + input[i] = input[i] + (carry << 25); + input[i+1] = input[i+1] - carry; + } else { + const s32 mask = input[i] >> 31; + const s32 carry = -((input[i] & mask) >> 26); + input[i] = input[i] + (carry << 26); + input[i+1] = input[i+1] - carry; + } + } + + /* There's no greater limb for input[9] to borrow from, but we can multiply + * by 19 and borrow from input[0], which is valid mod 2^255-19. */ + { + const s32 mask = input[9] >> 31; + const s32 carry = -((input[9] & mask) >> 25); + input[9] = input[9] + (carry << 25); + input[0] = input[0] - (carry * 19); + } + + /* After the first iteration, input[1..9] are non-negative and fit within + * 25 or 26 bits, depending on position. However, input[0] may be + * negative. */ + } + + /* The first borrow-propagation pass above ended with every limb + except (possibly) input[0] non-negative. + + If input[0] was negative after the first pass, then it was because of a + carry from input[9]. On entry, input[9] < 2^26 so the carry was, at most, + one, since (2**26-1) >> 25 = 1. Thus input[0] >= -19. + + In the second pass, each limb is decreased by at most one. Thus the second + borrow-propagation pass could only have wrapped around to decrease + input[0] again if the first pass left input[0] negative *and* input[1] + through input[9] were all zero. In that case, input[1] is now 2^25 - 1, + and this last borrow-propagation step will leave input[1] non-negative. */ + { + const s32 mask = input[0] >> 31; + const s32 carry = -((input[0] & mask) >> 26); + input[0] = input[0] + (carry << 26); + input[1] = input[1] - carry; + } + + /* All input[i] are now non-negative. However, there might be values between + * 2^25 and 2^26 in a limb which is, nominally, 25 bits wide. */ + for (j = 0; j < 2; j++) { + for (i = 0; i < 9; i++) { + if ((i & 1) == 1) { + const s32 carry = input[i] >> 25; + input[i] &= 0x1ffffff; + input[i+1] += carry; + } else { + const s32 carry = input[i] >> 26; + input[i] &= 0x3ffffff; + input[i+1] += carry; + } + } + + { + const s32 carry = input[9] >> 25; + input[9] &= 0x1ffffff; + input[0] += 19*carry; + } + } + + /* If the first carry-chain pass, just above, ended up with a carry from + * input[9], and that caused input[0] to be out-of-bounds, then input[0] was + * < 2^26 + 2*19, because the carry was, at most, two. + * + * If the second pass carried from input[9] again then input[0] is < 2*19 and + * the input[9] -> input[0] carry didn't push input[0] out of bounds. */ + + /* It still remains the case that input might be between 2^255-19 and 2^255. + * In this case, input[1..9] must take their maximum value and input[0] must + * be >= (2^255-19) & 0x3ffffff, which is 0x3ffffed. */ + mask = s32_gte(input[0], 0x3ffffed); + for (i = 1; i < 10; i++) { + if ((i & 1) == 1) { + mask &= s32_eq(input[i], 0x1ffffff); + } else { + mask &= s32_eq(input[i], 0x3ffffff); + } + } + + /* mask is either 0xffffffff (if input >= 2^255-19) and zero otherwise. Thus + * this conditionally subtracts 2^255-19. */ + input[0] -= mask & 0x3ffffed; + + for (i = 1; i < 10; i++) { + if ((i & 1) == 1) { + input[i] -= mask & 0x1ffffff; + } else { + input[i] -= mask & 0x3ffffff; + } + } + + input[1] <<= 2; + input[2] <<= 3; + input[3] <<= 5; + input[4] <<= 6; + input[6] <<= 1; + input[7] <<= 3; + input[8] <<= 4; + input[9] <<= 6; +#define F(i, s) \ + output[s+0] |= input[i] & 0xff; \ + output[s+1] = (input[i] >> 8) & 0xff; \ + output[s+2] = (input[i] >> 16) & 0xff; \ + output[s+3] = (input[i] >> 24) & 0xff; + output[0] = 0; + output[16] = 0; + F(0,0); + F(1,3); + F(2,6); + F(3,9); + F(4,12); + F(5,16); + F(6,19); + F(7,22); + F(8,25); + F(9,28); +#undef F +} + +/* Input: Q, Q', Q-Q' + * Output: 2Q, Q+Q' + * + * x2 z3: long form + * x3 z3: long form + * x z: short form, destroyed + * xprime zprime: short form, destroyed + * qmqp: short form, preserved + * + * On entry and exit, the absolute value of the limbs of all inputs and outputs + * are < 2^26. */ +static void fmonty(limb *x2, limb *z2, /* output 2Q */ + limb *x3, limb *z3, /* output Q + Q' */ + limb *x, limb *z, /* input Q */ + limb *xprime, limb *zprime, /* input Q' */ + const limb *qmqp /* input Q - Q' */) { + limb origx[10], origxprime[10], zzz[19], xx[19], zz[19], xxprime[19], + zzprime[19], zzzprime[19], xxxprime[19]; + + memcpy(origx, x, 10 * sizeof(limb)); + fsum(x, z); + /* |x[i]| < 2^27 */ + fdifference(z, origx); /* does x - z */ + /* |z[i]| < 2^27 */ + + memcpy(origxprime, xprime, sizeof(limb) * 10); + fsum(xprime, zprime); + /* |xprime[i]| < 2^27 */ + fdifference(zprime, origxprime); + /* |zprime[i]| < 2^27 */ + fproduct(xxprime, xprime, z); + /* |xxprime[i]| < 14*2^54: the largest product of two limbs will be < + * 2^(27+27) and fproduct adds together, at most, 14 of those products. + * (Approximating that to 2^58 doesn't work out.) */ + fproduct(zzprime, x, zprime); + /* |zzprime[i]| < 14*2^54 */ + freduce_degree(xxprime); + freduce_coefficients(xxprime); + /* |xxprime[i]| < 2^26 */ + freduce_degree(zzprime); + freduce_coefficients(zzprime); + /* |zzprime[i]| < 2^26 */ + memcpy(origxprime, xxprime, sizeof(limb) * 10); + fsum(xxprime, zzprime); + /* |xxprime[i]| < 2^27 */ + fdifference(zzprime, origxprime); + /* |zzprime[i]| < 2^27 */ + fsquare(xxxprime, xxprime); + /* |xxxprime[i]| < 2^26 */ + fsquare(zzzprime, zzprime); + /* |zzzprime[i]| < 2^26 */ + fproduct(zzprime, zzzprime, qmqp); + /* |zzprime[i]| < 14*2^52 */ + freduce_degree(zzprime); + freduce_coefficients(zzprime); + /* |zzprime[i]| < 2^26 */ + memcpy(x3, xxxprime, sizeof(limb) * 10); + memcpy(z3, zzprime, sizeof(limb) * 10); + + fsquare(xx, x); + /* |xx[i]| < 2^26 */ + fsquare(zz, z); + /* |zz[i]| < 2^26 */ + fproduct(x2, xx, zz); + /* |x2[i]| < 14*2^52 */ + freduce_degree(x2); + freduce_coefficients(x2); + /* |x2[i]| < 2^26 */ + fdifference(zz, xx); // does zz = xx - zz + /* |zz[i]| < 2^27 */ + memset(zzz + 10, 0, sizeof(limb) * 9); + fscalar_product(zzz, zz, 121665); + /* |zzz[i]| < 2^(27+17) */ + /* No need to call freduce_degree here: + fscalar_product doesn't increase the degree of its input. */ + freduce_coefficients(zzz); + /* |zzz[i]| < 2^26 */ + fsum(zzz, xx); + /* |zzz[i]| < 2^27 */ + fproduct(z2, zz, zzz); + /* |z2[i]| < 14*2^(26+27) */ + freduce_degree(z2); + freduce_coefficients(z2); + /* |z2|i| < 2^26 */ +} + +/* Conditionally swap two reduced-form limb arrays if 'iswap' is 1, but leave + * them unchanged if 'iswap' is 0. Runs in data-invariant time to avoid + * side-channel attacks. + * + * NOTE that this function requires that 'iswap' be 1 or 0; other values give + * wrong results. Also, the two limb arrays must be in reduced-coefficient, + * reduced-degree form: the values in a[10..19] or b[10..19] aren't swapped, + * and all all values in a[0..9],b[0..9] must have magnitude less than + * INT32_MAX. */ +static void +swap_conditional(limb a[19], limb b[19], limb iswap) { + unsigned i; + const s32 swap = (s32) -iswap; + + for (i = 0; i < 10; ++i) { + const s32 x = swap & ( ((s32)a[i]) ^ ((s32)b[i]) ); + a[i] = ((s32)a[i]) ^ x; + b[i] = ((s32)b[i]) ^ x; + } +} + +/* Calculates nQ where Q is the x-coordinate of a point on the curve + * + * resultx/resultz: the x coordinate of the resulting curve point (short form) + * n: a little endian, 32-byte number + * q: a point of the curve (short form) */ +static void +cmult(limb *resultx, limb *resultz, const u8 *n, const limb *q) { + limb a[19] = {0}, b[19] = {1}, c[19] = {1}, d[19] = {0}; + limb *nqpqx = a, *nqpqz = b, *nqx = c, *nqz = d, *t; + limb e[19] = {0}, f[19] = {1}, g[19] = {0}, h[19] = {1}; + limb *nqpqx2 = e, *nqpqz2 = f, *nqx2 = g, *nqz2 = h; + + unsigned i, j; + + memcpy(nqpqx, q, sizeof(limb) * 10); + + for (i = 0; i < 32; ++i) { + u8 byte = n[31 - i]; + for (j = 0; j < 8; ++j) { + const limb bit = byte >> 7; + + swap_conditional(nqx, nqpqx, bit); + swap_conditional(nqz, nqpqz, bit); + fmonty(nqx2, nqz2, + nqpqx2, nqpqz2, + nqx, nqz, + nqpqx, nqpqz, + q); + swap_conditional(nqx2, nqpqx2, bit); + swap_conditional(nqz2, nqpqz2, bit); + + t = nqx; + nqx = nqx2; + nqx2 = t; + t = nqz; + nqz = nqz2; + nqz2 = t; + t = nqpqx; + nqpqx = nqpqx2; + nqpqx2 = t; + t = nqpqz; + nqpqz = nqpqz2; + nqpqz2 = t; + + byte <<= 1; + } + } + + memcpy(resultx, nqx, sizeof(limb) * 10); + memcpy(resultz, nqz, sizeof(limb) * 10); +} + +// ----------------------------------------------------------------------------- +// Shamelessly copied from djb's code +// ----------------------------------------------------------------------------- +static void +crecip(limb *out, const limb *z) { + limb z2[10]; + limb z9[10]; + limb z11[10]; + limb z2_5_0[10]; + limb z2_10_0[10]; + limb z2_20_0[10]; + limb z2_50_0[10]; + limb z2_100_0[10]; + limb t0[10]; + limb t1[10]; + int i; + + /* 2 */ fsquare(z2,z); + /* 4 */ fsquare(t1,z2); + /* 8 */ fsquare(t0,t1); + /* 9 */ fmul(z9,t0,z); + /* 11 */ fmul(z11,z9,z2); + /* 22 */ fsquare(t0,z11); + /* 2^5 - 2^0 = 31 */ fmul(z2_5_0,t0,z9); + + /* 2^6 - 2^1 */ fsquare(t0,z2_5_0); + /* 2^7 - 2^2 */ fsquare(t1,t0); + /* 2^8 - 2^3 */ fsquare(t0,t1); + /* 2^9 - 2^4 */ fsquare(t1,t0); + /* 2^10 - 2^5 */ fsquare(t0,t1); + /* 2^10 - 2^0 */ fmul(z2_10_0,t0,z2_5_0); + + /* 2^11 - 2^1 */ fsquare(t0,z2_10_0); + /* 2^12 - 2^2 */ fsquare(t1,t0); + /* 2^20 - 2^10 */ for (i = 2;i < 10;i += 2) { fsquare(t0,t1); fsquare(t1,t0); } + /* 2^20 - 2^0 */ fmul(z2_20_0,t1,z2_10_0); + + /* 2^21 - 2^1 */ fsquare(t0,z2_20_0); + /* 2^22 - 2^2 */ fsquare(t1,t0); + /* 2^40 - 2^20 */ for (i = 2;i < 20;i += 2) { fsquare(t0,t1); fsquare(t1,t0); } + /* 2^40 - 2^0 */ fmul(t0,t1,z2_20_0); + + /* 2^41 - 2^1 */ fsquare(t1,t0); + /* 2^42 - 2^2 */ fsquare(t0,t1); + /* 2^50 - 2^10 */ for (i = 2;i < 10;i += 2) { fsquare(t1,t0); fsquare(t0,t1); } + /* 2^50 - 2^0 */ fmul(z2_50_0,t0,z2_10_0); + + /* 2^51 - 2^1 */ fsquare(t0,z2_50_0); + /* 2^52 - 2^2 */ fsquare(t1,t0); + /* 2^100 - 2^50 */ for (i = 2;i < 50;i += 2) { fsquare(t0,t1); fsquare(t1,t0); } + /* 2^100 - 2^0 */ fmul(z2_100_0,t1,z2_50_0); + + /* 2^101 - 2^1 */ fsquare(t1,z2_100_0); + /* 2^102 - 2^2 */ fsquare(t0,t1); + /* 2^200 - 2^100 */ for (i = 2;i < 100;i += 2) { fsquare(t1,t0); fsquare(t0,t1); } + /* 2^200 - 2^0 */ fmul(t1,t0,z2_100_0); + + /* 2^201 - 2^1 */ fsquare(t0,t1); + /* 2^202 - 2^2 */ fsquare(t1,t0); + /* 2^250 - 2^50 */ for (i = 2;i < 50;i += 2) { fsquare(t0,t1); fsquare(t1,t0); } + /* 2^250 - 2^0 */ fmul(t0,t1,z2_50_0); + + /* 2^251 - 2^1 */ fsquare(t1,t0); + /* 2^252 - 2^2 */ fsquare(t0,t1); + /* 2^253 - 2^3 */ fsquare(t1,t0); + /* 2^254 - 2^4 */ fsquare(t0,t1); + /* 2^255 - 2^5 */ fsquare(t1,t0); + /* 2^255 - 21 */ fmul(out,t1,z11); +} + +int +curve25519_donna(u8 *mypublic, const u8 *secret, const u8 *basepoint) { + limb bp[10], x[10], z[11], zmone[10]; + uint8_t e[32]; + int i; + + for (i = 0; i < 32; ++i) e[i] = secret[i]; +// e[0] &= 248; +// e[31] &= 127; +// e[31] |= 64; + + fexpand(bp, basepoint); + cmult(x, z, e, bp); + crecip(zmone, z); + fmul(z, x, zmone); + fcontract(mypublic, z); + return 0; +} diff --git a/Sources/libsignal/curve25519/curve25519-donna.h b/Sources/libsignal/curve25519/curve25519-donna.h new file mode 100755 index 0000000..3e4dfce --- /dev/null +++ b/Sources/libsignal/curve25519/curve25519-donna.h @@ -0,0 +1,6 @@ +#ifndef CURVE25519_DONNA_H +#define CURVE25519_DONNA_H + +extern int curve25519_donna(uint8_t *, const uint8_t *, const uint8_t *); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/compare.c b/Sources/libsignal/curve25519/ed25519/additions/compare.c new file mode 100755 index 0000000..8b1e313 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/compare.c @@ -0,0 +1,44 @@ +#include +#include "compare.h" + +/* Const-time comparison from SUPERCOP, but here it's only used for + signature verification, so doesn't need to be const-time. But + copied the nacl version anyways. */ +int crypto_verify_32_ref(const unsigned char *x, const unsigned char *y) +{ + unsigned int differentbits = 0; +#define F(i) differentbits |= x[i] ^ y[i]; + F(0) + F(1) + F(2) + F(3) + F(4) + F(5) + F(6) + F(7) + F(8) + F(9) + F(10) + F(11) + F(12) + F(13) + F(14) + F(15) + F(16) + F(17) + F(18) + F(19) + F(20) + F(21) + F(22) + F(23) + F(24) + F(25) + F(26) + F(27) + F(28) + F(29) + F(30) + F(31) + return (1 & ((differentbits - 1) >> 8)) - 1; +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/compare.h b/Sources/libsignal/curve25519/ed25519/additions/compare.h new file mode 100755 index 0000000..5a2fa91 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/compare.h @@ -0,0 +1,6 @@ +#ifndef __COMPARE_H__ +#define __COMPARE_H__ + +int crypto_verify_32_ref(const unsigned char *b1, const unsigned char *b2); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/crypto_additions.h b/Sources/libsignal/curve25519/ed25519/additions/crypto_additions.h new file mode 100755 index 0000000..5c4b8f4 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/crypto_additions.h @@ -0,0 +1,45 @@ + +#ifndef __CRYPTO_ADDITIONS__ +#define __CRYPTO_ADDITIONS__ + +#include "crypto_uint32.h" +#include "fe.h" +#include "ge.h" + +#define MAX_MSG_LEN 256 + +void sc_neg(unsigned char *b, const unsigned char *a); +void sc_cmov(unsigned char* f, const unsigned char* g, unsigned char b); + +int fe_isequal(const fe f, const fe g); +int fe_isreduced(const unsigned char* s); +void fe_mont_rhs(fe v2, const fe u); +void fe_montx_to_edy(fe y, const fe u); +void fe_sqrt(fe b, const fe a); + +int ge_isneutral(const ge_p3* q); +void ge_neg(ge_p3* r, const ge_p3 *p); +void ge_montx_to_p3(ge_p3* p, const fe u, const unsigned char ed_sign_bit); +void ge_p3_to_montx(fe u, const ge_p3 *p); +void ge_scalarmult(ge_p3 *h, const unsigned char *a, const ge_p3 *A); +void ge_scalarmult_cofactor(ge_p3 *q, const ge_p3 *p); + +void elligator(fe u, const fe r); +void hash_to_point(ge_p3* p, const unsigned char* msg, const unsigned long in_len); + +int crypto_sign_modified( + unsigned char *sm, + const unsigned char *m,unsigned long long mlen, + const unsigned char *sk, /* Curve/Ed25519 private key */ + const unsigned char *pk, /* Ed25519 public key */ + const unsigned char *random /* 64 bytes random to hash into nonce */ + ); + +int crypto_sign_open_modified( + unsigned char *m, + const unsigned char *sm,unsigned long long smlen, + const unsigned char *pk + ); + + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/crypto_hash_sha512.h b/Sources/libsignal/curve25519/ed25519/additions/crypto_hash_sha512.h new file mode 100755 index 0000000..a51a190 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/crypto_hash_sha512.h @@ -0,0 +1,6 @@ +#ifndef crypto_hash_sha512_H +#define crypto_hash_sha512_H + +extern int crypto_hash_sha512(unsigned char *,const unsigned char *,unsigned long long); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/curve_sigs.c b/Sources/libsignal/curve25519/ed25519/additions/curve_sigs.c new file mode 100755 index 0000000..df09c06 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/curve_sigs.c @@ -0,0 +1,102 @@ +#include +#include +#include "../ge.h" +#include "curve_sigs.h" +#include "crypto_sign.h" +#include "crypto_additions.h" + +int curve25519_sign(unsigned char* signature_out, + const unsigned char* curve25519_privkey, + const unsigned char* msg, const unsigned long msg_len, + const unsigned char* random) +{ + ge_p3 ed_pubkey_point; /* Ed25519 pubkey point */ + unsigned char ed_pubkey[32]; /* Ed25519 encoded pubkey */ + unsigned char *sigbuf; /* working buffer */ + unsigned char sign_bit = 0; + + if ((sigbuf = malloc(msg_len + 128)) == 0) { + memset(signature_out, 0, 64); + return -1; + } + + /* Convert the Curve25519 privkey to an Ed25519 public key */ + ge_scalarmult_base(&ed_pubkey_point, curve25519_privkey); + ge_p3_tobytes(ed_pubkey, &ed_pubkey_point); + sign_bit = ed_pubkey[31] & 0x80; + + /* Perform an Ed25519 signature with explicit private key */ + crypto_sign_modified(sigbuf, msg, msg_len, curve25519_privkey, + ed_pubkey, random); + memmove(signature_out, sigbuf, 64); + + /* Encode the sign bit into signature (in unused high bit of S) */ + signature_out[63] &= 0x7F; /* bit should be zero already, but just in case */ + signature_out[63] |= sign_bit; + + free(sigbuf); + return 0; +} + +int curve25519_verify(const unsigned char* signature, + const unsigned char* curve25519_pubkey, + const unsigned char* msg, const unsigned long msg_len) +{ + fe u; + fe y; + unsigned char ed_pubkey[32]; + unsigned char *verifybuf = NULL; /* working buffer */ + unsigned char *verifybuf2 = NULL; /* working buffer #2 */ + int result; + + if ((verifybuf = malloc(msg_len + 64)) == 0) { + result = -1; + goto err; + } + + if ((verifybuf2 = malloc(msg_len + 64)) == 0) { + result = -1; + goto err; + } + + /* Convert the Curve25519 public key into an Ed25519 public key. In + particular, convert Curve25519's "montgomery" x-coordinate (u) into an + Ed25519 "edwards" y-coordinate: + + y = (u - 1) / (u + 1) + + NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp + + Then move the sign bit into the pubkey from the signature. + */ + fe_frombytes(u, curve25519_pubkey); + fe_montx_to_edy(y, u); + fe_tobytes(ed_pubkey, y); + + /* Copy the sign bit, and remove it from signature */ + ed_pubkey[31] &= 0x7F; /* bit should be zero already, but just in case */ + ed_pubkey[31] |= (signature[63] & 0x80); + memmove(verifybuf, signature, 64); + verifybuf[63] &= 0x7F; + + memmove(verifybuf+64, msg, msg_len); + + /* Then perform a normal Ed25519 verification, return 0 on success */ + /* The below call has a strange API: */ + /* verifybuf = R || S || message */ + /* verifybuf2 = internal to next call gets a copy of verifybuf, S gets + replaced with pubkey for hashing */ + result = crypto_sign_open_modified(verifybuf2, verifybuf, 64 + msg_len, ed_pubkey); + + err: + + if (verifybuf != NULL) { + free(verifybuf); + } + + if (verifybuf2 != NULL) { + free(verifybuf2); + } + + return result; +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/curve_sigs.h b/Sources/libsignal/curve25519/ed25519/additions/curve_sigs.h new file mode 100755 index 0000000..a2d819a --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/curve_sigs.h @@ -0,0 +1,17 @@ + +#ifndef __CURVE_SIGS_H__ +#define __CURVE_SIGS_H__ + +/* returns 0 on success */ +int curve25519_sign(unsigned char* signature_out, /* 64 bytes */ + const unsigned char* curve25519_privkey, /* 32 bytes */ + const unsigned char* msg, const unsigned long msg_len, /* <= 256 bytes */ + const unsigned char* random); /* 64 bytes */ + +/* returns 0 on success */ +int curve25519_verify(const unsigned char* signature, /* 64 bytes */ + const unsigned char* curve25519_pubkey, /* 32 bytes */ + const unsigned char* msg, const unsigned long msg_len); /* <= 256 bytes */ + + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/elligator.c b/Sources/libsignal/curve25519/ed25519/additions/elligator.c new file mode 100755 index 0000000..17b03a7 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/elligator.c @@ -0,0 +1,80 @@ +#include +#include "fe.h" +#include "ge.h" +#include "crypto_uint32.h" +#include "crypto_hash_sha512.h" +#include "crypto_additions.h" + +unsigned int legendre_is_nonsquare(fe in) +{ + fe temp; + unsigned char bytes[32]; + fe_pow22523(temp, in); /* temp = in^((q-5)/8) */ + fe_sq(temp, temp); /* in^((q-5)/4) */ + fe_sq(temp, temp); /* in^((q-5)/2) */ + fe_mul(temp, temp, in); /* in^((q-3)/2) */ + fe_mul(temp, temp, in); /* in^((q-1)/2) */ + + /* temp is now the Legendre symbol: + * 1 = square + * 0 = input is zero + * -1 = nonsquare + */ + fe_tobytes(bytes, temp); + return 1 & bytes[31]; +} + +void elligator(fe u, const fe r) +{ + /* r = input + * x = -A/(1+2r^2) # 2 is nonsquare + * e = (x^3 + Ax^2 + x)^((q-1)/2) # legendre symbol + * if e == 1 (square) or e == 0 (because x == 0 and 2r^2 + 1 == 0) + * u = x + * if e == -1 (nonsquare) + * u = -x - A + */ + fe A, one, twor2, twor2plus1, twor2plus1inv; + fe x, e, Atemp, uneg; + unsigned int nonsquare; + + fe_1(one); + fe_0(A); + A[0] = 486662; /* A = 486662 */ + + fe_sq2(twor2, r); /* 2r^2 */ + fe_add(twor2plus1, twor2, one); /* 1+2r^2 */ + fe_invert(twor2plus1inv, twor2plus1); /* 1/(1+2r^2) */ + fe_mul(x, twor2plus1inv, A); /* A/(1+2r^2) */ + fe_neg(x, x); /* x = -A/(1+2r^2) */ + + fe_mont_rhs(e, x); /* e = x^3 + Ax^2 + x */ + nonsquare = legendre_is_nonsquare(e); + + fe_0(Atemp); + fe_cmov(Atemp, A, nonsquare); /* 0, or A if nonsquare */ + fe_add(u, x, Atemp); /* x, or x+A if nonsquare */ + fe_neg(uneg, u); /* -x, or -x-A if nonsquare */ + fe_cmov(u, uneg, nonsquare); /* x, or -x-A if nonsquare */ +} + +void hash_to_point(ge_p3* p, const unsigned char* in, const unsigned long in_len) +{ + unsigned char hash[64]; + fe h, u; + unsigned char sign_bit; + ge_p3 p3; + + crypto_hash_sha512(hash, in, in_len); + + /* take the high bit as Edwards sign bit */ + sign_bit = (hash[31] & 0x80) >> 7; + hash[31] &= 0x7F; + fe_frombytes(h, hash); + elligator(u, h); + + ge_montx_to_p3(&p3, u, sign_bit); + ge_scalarmult_cofactor(p, &p3); +} + + diff --git a/Sources/libsignal/curve25519/ed25519/additions/fe_isequal.c b/Sources/libsignal/curve25519/ed25519/additions/fe_isequal.c new file mode 100755 index 0000000..67c5d33 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/fe_isequal.c @@ -0,0 +1,14 @@ +#include "fe.h" +#include "crypto_verify_32.h" + +/* +return 1 if f == g +return 0 if f != g +*/ + +int fe_isequal(const fe f, const fe g) +{ + fe h; + fe_sub(h, f, g); + return 1 ^ (1 & (fe_isnonzero(h) >> 8)); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/fe_isreduced.c b/Sources/libsignal/curve25519/ed25519/additions/fe_isreduced.c new file mode 100755 index 0000000..6fbb3be --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/fe_isreduced.c @@ -0,0 +1,14 @@ +#include "fe.h" +#include "crypto_verify_32.h" + +int fe_isreduced(const unsigned char* s) +{ + fe f; + unsigned char strict[32]; + + fe_frombytes(f, s); + fe_tobytes(strict, f); + if (crypto_verify_32(strict, s) != 0) + return 0; + return 1; +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/fe_mont_rhs.c b/Sources/libsignal/curve25519/ed25519/additions/fe_mont_rhs.c new file mode 100755 index 0000000..bc83936 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/fe_mont_rhs.c @@ -0,0 +1,17 @@ +#include "fe.h" + +void fe_mont_rhs(fe v2, fe u) { + fe A, one; + fe u2, Au, inner; + + fe_1(one); + fe_0(A); + A[0] = 486662; /* A = 486662 */ + + fe_sq(u2, u); /* u^2 */ + fe_mul(Au, A, u); /* Au */ + fe_add(inner, u2, Au); /* u^2 + Au */ + fe_add(inner, inner, one); /* u^2 + Au + 1 */ + fe_mul(v2, u, inner); /* u(u^2 + Au + 1) */ +} + diff --git a/Sources/libsignal/curve25519/ed25519/additions/fe_montx_to_edy.c b/Sources/libsignal/curve25519/ed25519/additions/fe_montx_to_edy.c new file mode 100755 index 0000000..b0f8c63 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/fe_montx_to_edy.c @@ -0,0 +1,19 @@ + +#include "fe.h" +#include "crypto_additions.h" + +void fe_montx_to_edy(fe y, const fe u) +{ + /* + y = (u - 1) / (u + 1) + + NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp + */ + fe one, um1, up1; + + fe_1(one); + fe_sub(um1, u, one); + fe_add(up1, u, one); + fe_invert(up1, up1); + fe_mul(y, um1, up1); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/fe_sqrt.c b/Sources/libsignal/curve25519/ed25519/additions/fe_sqrt.c new file mode 100755 index 0000000..a0c9785 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/fe_sqrt.c @@ -0,0 +1,51 @@ +#include +#include "fe.h" +#include "crypto_additions.h" + +/* sqrt(-1) */ +static unsigned char i_bytes[32] = { + 0xb0, 0xa0, 0x0e, 0x4a, 0x27, 0x1b, 0xee, 0xc4, + 0x78, 0xe4, 0x2f, 0xad, 0x06, 0x18, 0x43, 0x2f, + 0xa7, 0xd7, 0xfb, 0x3d, 0x99, 0x00, 0x4d, 0x2b, + 0x0b, 0xdf, 0xc1, 0x4f, 0x80, 0x24, 0x83, 0x2b +}; + +/* Preconditions: a is square or zero */ + +void fe_sqrt(fe out, const fe a) +{ + fe exp, b, b2, bi, i; +#ifndef NDEBUG + fe legendre, zero, one; +#endif + + fe_frombytes(i, i_bytes); + fe_pow22523(exp, a); /* b = a^(q-5)/8 */ + + /* PRECONDITION: legendre symbol == 1 (square) or 0 (a == zero) */ +#ifndef NDEBUG + fe_sq(legendre, exp); /* in^((q-5)/4) */ + fe_sq(legendre, legendre); /* in^((q-5)/2) */ + fe_mul(legendre, legendre, a); /* in^((q-3)/2) */ + fe_mul(legendre, legendre, a); /* in^((q-1)/2) */ + + fe_0(zero); + fe_1(one); + assert(fe_isequal(legendre, zero) || fe_isequal(legendre, one)); +#endif + + fe_mul(b, a, exp); /* b = a * a^(q-5)/8 */ + fe_sq(b2, b); /* b^2 = a * a^(q-1)/4 */ + + /* note b^4 == a^2, so b^2 == a or -a + * if b^2 != a, multiply it by sqrt(-1) */ + fe_mul(bi, b, i); + fe_cmov(b, bi, 1 ^ fe_isequal(b2, a)); + fe_copy(out, b); + + /* PRECONDITION: out^2 == a */ +#ifndef NDEBUG + fe_sq(b2, out); + assert(fe_isequal(a, b2)); +#endif +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/ge_isneutral.c b/Sources/libsignal/curve25519/ed25519/additions/ge_isneutral.c new file mode 100755 index 0000000..d40e443 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/ge_isneutral.c @@ -0,0 +1,16 @@ +#include "crypto_additions.h" +#include "ge.h" + +/* +return 1 if p is the neutral point +return 0 otherwise +*/ + +int ge_isneutral(const ge_p3 *p) +{ + fe zero; + fe_0(zero); + + /* Check if p == neutral element == (0, 1) */ + return (fe_isequal(p->X, zero) & fe_isequal(p->Y, p->Z)); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/ge_montx_to_p3.c b/Sources/libsignal/curve25519/ed25519/additions/ge_montx_to_p3.c new file mode 100755 index 0000000..7a716c5 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/ge_montx_to_p3.c @@ -0,0 +1,70 @@ +#include "fe.h" +#include "ge.h" +#include "assert.h" +#include "crypto_additions.h" +#include "utility.h" + +/* sqrt(-(A+2)) */ +static unsigned char A_bytes[32] = { + 0x06, 0x7e, 0x45, 0xff, 0xaa, 0x04, 0x6e, 0xcc, + 0x82, 0x1a, 0x7d, 0x4b, 0xd1, 0xd3, 0xa1, 0xc5, + 0x7e, 0x4f, 0xfc, 0x03, 0xdc, 0x08, 0x7b, 0xd2, + 0xbb, 0x06, 0xa0, 0x60, 0xf4, 0xed, 0x26, 0x0f +}; + +void ge_montx_to_p3(ge_p3* p, const fe u, const unsigned char ed_sign_bit) +{ + fe x, y, A, v, v2, iv, nx; + + fe_frombytes(A, A_bytes); + + /* given u, recover edwards y */ + /* given u, recover v */ + /* given u and v, recover edwards x */ + + fe_montx_to_edy(y, u); /* y = (u - 1) / (u + 1) */ + + fe_mont_rhs(v2, u); /* v^2 = u(u^2 + Au + 1) */ + fe_sqrt(v, v2); /* v = sqrt(v^2) */ + + fe_mul(x, u, A); /* x = u * sqrt(-(A+2)) */ + fe_invert(iv, v); /* 1/v */ + fe_mul(x, x, iv); /* x = (u/v) * sqrt(-(A+2)) */ + + fe_neg(nx, x); /* negate x to match sign bit */ + fe_cmov(x, nx, fe_isnegative(x) ^ ed_sign_bit); + + fe_copy(p->X, x); + fe_copy(p->Y, y); + fe_1(p->Z); + fe_mul(p->T, p->X, p->Y); + + /* POSTCONDITION: check that p->X and p->Y satisfy the Ed curve equation */ + /* -x^2 + y^2 = 1 + dx^2y^2 */ +#ifndef NDEBUG + { + fe one, d, x2, y2, x2y2, dx2y2; + + unsigned char dbytes[32] = { + 0xa3, 0x78, 0x59, 0x13, 0xca, 0x4d, 0xeb, 0x75, + 0xab, 0xd8, 0x41, 0x41, 0x4d, 0x0a, 0x70, 0x00, + 0x98, 0xe8, 0x79, 0x77, 0x79, 0x40, 0xc7, 0x8c, + 0x73, 0xfe, 0x6f, 0x2b, 0xee, 0x6c, 0x03, 0x52 + }; + + fe_frombytes(d, dbytes); + fe_1(one); + fe_sq(x2, p->X); /* x^2 */ + fe_sq(y2, p->Y); /* y^2 */ + + fe_mul(dx2y2, x2, y2); /* x^2y^2 */ + fe_mul(dx2y2, dx2y2, d); /* dx^2y^2 */ + fe_add(dx2y2, dx2y2, one); /* dx^2y^2 + 1 */ + + fe_neg(x2y2, x2); /* -x^2 */ + fe_add(x2y2, x2y2, y2); /* -x^2 + y^2 */ + + assert(fe_isequal(x2y2, dx2y2)); + } +#endif +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/ge_neg.c b/Sources/libsignal/curve25519/ed25519/additions/ge_neg.c new file mode 100755 index 0000000..d679713 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/ge_neg.c @@ -0,0 +1,15 @@ +#include "crypto_additions.h" +#include "ge.h" + +/* +return r = -p +*/ + + +void ge_neg(ge_p3* r, const ge_p3 *p) +{ + fe_neg(r->X, p->X); + fe_copy(r->Y, p->Y); + fe_copy(r->Z, p->Z); + fe_neg(r->T, p->T); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/ge_p3_to_montx.c b/Sources/libsignal/curve25519/ed25519/additions/ge_p3_to_montx.c new file mode 100755 index 0000000..b539b2f --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/ge_p3_to_montx.c @@ -0,0 +1,21 @@ +#include "fe.h" +#include "crypto_additions.h" + +void ge_p3_to_montx(fe u, const ge_p3 *ed) +{ + /* + u = (y + 1) / (1 - y) + or + u = (y + z) / (z - y) + + NOTE: y=1 is converted to u=0 since fe_invert is mod-exp + */ + + fe y_plus_one, one_minus_y, inv_one_minus_y; + + fe_add(y_plus_one, ed->Y, ed->Z); + fe_sub(one_minus_y, ed->Z, ed->Y); + fe_invert(inv_one_minus_y, one_minus_y); + fe_mul(u, y_plus_one, inv_one_minus_y); +} + diff --git a/Sources/libsignal/curve25519/ed25519/additions/ge_scalarmult.c b/Sources/libsignal/curve25519/ed25519/additions/ge_scalarmult.c new file mode 100755 index 0000000..e4f741b --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/ge_scalarmult.c @@ -0,0 +1,140 @@ +#include "crypto_uint32.h" +#include "ge.h" +#include "crypto_additions.h" + +static unsigned char equal(signed char b,signed char c) +{ + unsigned char ub = b; + unsigned char uc = c; + unsigned char x = ub ^ uc; /* 0: yes; 1..255: no */ + crypto_uint32 y = x; /* 0: yes; 1..255: no */ + y -= 1; /* 4294967295: yes; 0..254: no */ + y >>= 31; /* 1: yes; 0: no */ + return y; +} + +static unsigned char negative(signed char b) +{ + unsigned long long x = b; /* 18446744073709551361..18446744073709551615: yes; 0..255: no */ + x >>= 63; /* 1: yes; 0: no */ + return x; +} + +static void cmov(ge_cached *t,const ge_cached *u,unsigned char b) +{ + fe_cmov(t->YplusX,u->YplusX,b); + fe_cmov(t->YminusX,u->YminusX,b); + fe_cmov(t->Z,u->Z,b); + fe_cmov(t->T2d,u->T2d,b); +} + +static void select(ge_cached *t,const ge_cached *pre, signed char b) +{ + ge_cached minust; + unsigned char bnegative = negative(b); + unsigned char babs = b - (((-bnegative) & b) << 1); + + fe_1(t->YplusX); + fe_1(t->YminusX); + fe_1(t->Z); + fe_0(t->T2d); + + cmov(t,pre+0,equal(babs,1)); + cmov(t,pre+1,equal(babs,2)); + cmov(t,pre+2,equal(babs,3)); + cmov(t,pre+3,equal(babs,4)); + cmov(t,pre+4,equal(babs,5)); + cmov(t,pre+5,equal(babs,6)); + cmov(t,pre+6,equal(babs,7)); + cmov(t,pre+7,equal(babs,8)); + fe_copy(minust.YplusX,t->YminusX); + fe_copy(minust.YminusX,t->YplusX); + fe_copy(minust.Z,t->Z); + fe_neg(minust.T2d,t->T2d); + cmov(t,&minust,bnegative); +} + +/* +h = a * B +where a = a[0]+256*a[1]+...+256^31 a[31] +B is the Ed25519 base point (x,4/5) with x positive. + +Preconditions: + a[31] <= 127 +*/ + +void ge_scalarmult(ge_p3 *h, const unsigned char *a, const ge_p3 *A) +{ + signed char e[64]; + signed char carry; + ge_p1p1 r; + ge_p2 s; + ge_p3 t0, t1, t2; + ge_cached t, pre[8]; + int i; + + for (i = 0;i < 32;++i) { + e[2 * i + 0] = (a[i] >> 0) & 15; + e[2 * i + 1] = (a[i] >> 4) & 15; + } + /* each e[i] is between 0 and 15 */ + /* e[63] is between 0 and 7 */ + + carry = 0; + for (i = 0;i < 63;++i) { + e[i] += carry; + carry = e[i] + 8; + carry >>= 4; + e[i] -= carry << 4; + } + e[63] += carry; + /* each e[i] is between -8 and 8 */ + + // Precomputation: + ge_p3_to_cached(pre+0, A); // A + + ge_p3_dbl(&r, A); + ge_p1p1_to_p3(&t0, &r); + ge_p3_to_cached(pre+1, &t0); // 2A + + ge_add(&r, A, pre+1); + ge_p1p1_to_p3(&t1, &r); + ge_p3_to_cached(pre+2, &t1); // 3A + + ge_p3_dbl(&r, &t0); + ge_p1p1_to_p3(&t0, &r); + ge_p3_to_cached(pre+3, &t0); // 4A + + ge_add(&r, A, pre+3); + ge_p1p1_to_p3(&t2, &r); + ge_p3_to_cached(pre+4, &t2); // 5A + + ge_p3_dbl(&r, &t1); + ge_p1p1_to_p3(&t1, &r); + ge_p3_to_cached(pre+5, &t1); // 6A + + ge_add(&r, A, pre+5); + ge_p1p1_to_p3(&t1, &r); + ge_p3_to_cached(pre+6, &t1); // 7A + + ge_p3_dbl(&r, &t0); + ge_p1p1_to_p3(&t0, &r); + ge_p3_to_cached(pre+7, &t0); // 8A + + ge_p3_0(h); + + for (i = 63;i > 0; i--) { + select(&t,pre,e[i]); + ge_add(&r, h, &t); + ge_p1p1_to_p2(&s,&r); + + ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r); + ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r); + ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r); + ge_p2_dbl(&r,&s); ge_p1p1_to_p3(h,&r); + + } + select(&t,pre,e[0]); + ge_add(&r, h, &t); + ge_p1p1_to_p3(h,&r); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/ge_scalarmult_cofactor.c b/Sources/libsignal/curve25519/ed25519/additions/ge_scalarmult_cofactor.c new file mode 100755 index 0000000..6affbb0 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/ge_scalarmult_cofactor.c @@ -0,0 +1,21 @@ +#include "crypto_additions.h" +#include "ge.h" + +/* +return 8 * p +*/ + +void ge_scalarmult_cofactor(ge_p3 *q, const ge_p3 *p) +{ + ge_p1p1 p1p1; + ge_p2 p2; + + ge_p3_dbl(&p1p1, p); + ge_p1p1_to_p2(&p2, &p1p1); + + ge_p2_dbl(&p1p1, &p2); + ge_p1p1_to_p2(&p2, &p1p1); + + ge_p2_dbl(&p1p1, &p2); + ge_p1p1_to_p3(q, &p1p1); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/ge_p3_add.c b/Sources/libsignal/curve25519/ed25519/additions/generalized/ge_p3_add.c new file mode 100755 index 0000000..75d9673 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/ge_p3_add.c @@ -0,0 +1,15 @@ +#include "ge.h" + +/* +r = p + q +*/ + +void ge_p3_add(ge_p3 *r, const ge_p3 *p, const ge_p3 *q) +{ + ge_cached p_cached; + ge_p1p1 r_p1p1; + + ge_p3_to_cached(&p_cached, p); + ge_add(&r_p1p1, q, &p_cached); + ge_p1p1_to_p3(r, &r_p1p1); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_constants.h b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_constants.h new file mode 100755 index 0000000..392a88e --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_constants.h @@ -0,0 +1,19 @@ +#ifndef _GEN_CONSTANTS_H__ +#define _GEN_CONSTANTS_H__ + +#define LABELSETMAXLEN 512 +#define LABELMAXLEN 128 +#define BUFLEN 1024 +#define BLOCKLEN 128 /* SHA512 */ +#define HASHLEN 64 /* SHA512 */ +#define POINTLEN 32 +#define SCALARLEN 32 +#define RANDLEN 32 +#define SIGNATURELEN 64 +#define VRFSIGNATURELEN 96 +#define VRFOUTPUTLEN 32 +#define MSTART 2048 +#define MSGMAXLEN 1048576 + +#endif + diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_crypto_additions.h b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_crypto_additions.h new file mode 100755 index 0000000..569ae26 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_crypto_additions.h @@ -0,0 +1,16 @@ + +#ifndef __GEN_CRYPTO_ADDITIONS__ +#define __GEN_CRYPTO_ADDITIONS__ + +#include "crypto_uint32.h" +#include "fe.h" +#include "ge.h" + +int sc_isreduced(const unsigned char* s); + +int point_isreduced(const unsigned char* p); + +void ge_p3_add(ge_p3 *r, const ge_p3 *p, const ge_p3 *q); + +#endif + diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_eddsa.c b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_eddsa.c new file mode 100755 index 0000000..9755d28 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_eddsa.c @@ -0,0 +1,349 @@ +#include +#include "gen_eddsa.h" +#include "gen_labelset.h" +#include "gen_constants.h" +#include "gen_crypto_additions.h" +#include "crypto_hash_sha512.h" +#include "crypto_verify_32.h" +#include "zeroize.h" +#include "ge.h" +#include "sc.h" +#include "crypto_additions.h" +#include "utility.h" + +/* B: base point + * R: commitment (point), + r: private nonce (scalar) + K: encoded public key + k: private key (scalar) + Z: 32-bytes random + M: buffer containing message, message starts at M_start, continues for M_len + + r = hash(B || labelset || Z || pad1 || k || pad2 || labelset || K || extra || M) (mod q) +*/ +int generalized_commit(unsigned char* R_bytes, unsigned char* r_scalar, + const unsigned char* labelset, const unsigned long labelset_len, + const unsigned char* extra, const unsigned long extra_len, + const unsigned char* K_bytes, const unsigned char* k_scalar, + const unsigned char* Z, + unsigned char* M_buf, const unsigned long M_start, const unsigned long M_len) +{ + ge_p3 R_point; + unsigned char hash[HASHLEN]; + unsigned char* bufstart = NULL; + unsigned char* bufptr = NULL; + unsigned char* bufend = NULL; + unsigned long prefix_len = 0; + + if (labelset_validate(labelset, labelset_len) != 0) + goto err; + if (R_bytes == NULL || r_scalar == NULL || + K_bytes == NULL || k_scalar == NULL || + Z == NULL || M_buf == NULL) + goto err; + if (extra == NULL && extra_len != 0) + goto err; + if (extra != NULL && extra_len == 0) + goto err; + if (extra != NULL && labelset_is_empty(labelset, labelset_len)) + goto err; + if (HASHLEN != 64) + goto err; + + prefix_len = 0; + prefix_len += POINTLEN + labelset_len + RANDLEN; + prefix_len += ((BLOCKLEN - (prefix_len % BLOCKLEN)) % BLOCKLEN); + prefix_len += SCALARLEN; + prefix_len += ((BLOCKLEN - (prefix_len % BLOCKLEN)) % BLOCKLEN); + prefix_len += labelset_len + POINTLEN + extra_len; + if (prefix_len > M_start) + goto err; + + bufstart = M_buf + M_start - prefix_len; + bufptr = bufstart; + bufend = M_buf + M_start; + bufptr = buffer_add(bufptr, bufend, B_bytes, POINTLEN); + bufptr = buffer_add(bufptr, bufend, labelset, labelset_len); + bufptr = buffer_add(bufptr, bufend, Z, RANDLEN); + bufptr = buffer_pad(bufstart, bufptr, bufend); + bufptr = buffer_add(bufptr, bufend, k_scalar, SCALARLEN); + bufptr = buffer_pad(bufstart, bufptr, bufend); + bufptr = buffer_add(bufptr, bufend, labelset, labelset_len); + bufptr = buffer_add(bufptr, bufend, K_bytes, POINTLEN); + bufptr = buffer_add(bufptr, bufend, extra, extra_len); + if (bufptr != bufend || bufptr != M_buf + M_start || bufptr - bufstart != prefix_len) + goto err; + + crypto_hash_sha512(hash, M_buf + M_start - prefix_len, prefix_len + M_len); + sc_reduce(hash); + ge_scalarmult_base(&R_point, hash); + ge_p3_tobytes(R_bytes, &R_point); + memcpy(r_scalar, hash, SCALARLEN); + + zeroize(hash, HASHLEN); + zeroize(bufstart, prefix_len); + return 0; + +err: + zeroize(hash, HASHLEN); + zeroize(M_buf, M_start); + return -1; +} + +/* if is_labelset_empty(labelset): + return hash(R || K || M) (mod q) + else: + return hash(B || labelset || R || labelset || K || extra || M) (mod q) +*/ +int generalized_challenge(unsigned char* h_scalar, + const unsigned char* labelset, const unsigned long labelset_len, + const unsigned char* extra, const unsigned long extra_len, + const unsigned char* R_bytes, + const unsigned char* K_bytes, + unsigned char* M_buf, const unsigned long M_start, const unsigned long M_len) +{ + unsigned char hash[HASHLEN]; + unsigned char* bufstart = NULL; + unsigned char* bufptr = NULL; + unsigned char* bufend = NULL; + unsigned long prefix_len = 0; + + if (h_scalar == NULL) + goto err; + memset(h_scalar, 0, SCALARLEN); + + if (labelset_validate(labelset, labelset_len) != 0) + goto err; + if (R_bytes == NULL || K_bytes == NULL || M_buf == NULL) + goto err; + if (extra == NULL && extra_len != 0) + goto err; + if (extra != NULL && extra_len == 0) + goto err; + if (extra != NULL && labelset_is_empty(labelset, labelset_len)) + goto err; + if (HASHLEN != 64) + goto err; + + if (labelset_is_empty(labelset, labelset_len)) { + if (2*POINTLEN > M_start) + goto err; + if (extra != NULL || extra_len != 0) + goto err; + memcpy(M_buf + M_start - (2*POINTLEN), R_bytes, POINTLEN); + memcpy(M_buf + M_start - (1*POINTLEN), K_bytes, POINTLEN); + prefix_len = 2*POINTLEN; + } else { + prefix_len = 3*POINTLEN + 2*labelset_len + extra_len; + if (prefix_len > M_start) + goto err; + + bufstart = M_buf + M_start - prefix_len; + bufptr = bufstart; + bufend = M_buf + M_start; + bufptr = buffer_add(bufptr, bufend, B_bytes, POINTLEN); + bufptr = buffer_add(bufptr, bufend, labelset, labelset_len); + bufptr = buffer_add(bufptr, bufend, R_bytes, POINTLEN); + bufptr = buffer_add(bufptr, bufend, labelset, labelset_len); + bufptr = buffer_add(bufptr, bufend, K_bytes, POINTLEN); + bufptr = buffer_add(bufptr, bufend, extra, extra_len); + + if (bufptr == NULL) + goto err; + if (bufptr != bufend || bufptr != M_buf + M_start || bufptr - bufstart != prefix_len) + goto err; + } + + crypto_hash_sha512(hash, M_buf + M_start - prefix_len, prefix_len + M_len); + sc_reduce(hash); + memcpy(h_scalar, hash, SCALARLEN); + return 0; + +err: + return -1; +} + +/* return r + kh (mod q) */ +int generalized_prove(unsigned char* out_scalar, + const unsigned char* r_scalar, const unsigned char* k_scalar, const unsigned char* h_scalar) +{ + sc_muladd(out_scalar, h_scalar, k_scalar, r_scalar); + zeroize_stack(); + return 0; +} + +/* R = s*B - h*K */ +int generalized_solve_commitment(unsigned char* R_bytes_out, ge_p3* K_point_out, + const ge_p3* B_point, const unsigned char* s_scalar, + const unsigned char* K_bytes, const unsigned char* h_scalar) +{ + + ge_p3 Kneg_point; + ge_p2 R_calc_point_p2; + + ge_p3 sB; + ge_p3 hK; + ge_p3 R_calc_point_p3; + + if (ge_frombytes_negate_vartime(&Kneg_point, K_bytes) != 0) + return -1; + + if (B_point == NULL) { + ge_double_scalarmult_vartime(&R_calc_point_p2, h_scalar, &Kneg_point, s_scalar); + ge_tobytes(R_bytes_out, &R_calc_point_p2); + } + else { + // s * Bv + ge_scalarmult(&sB, s_scalar, B_point); + + // h * -K + ge_scalarmult(&hK, h_scalar, &Kneg_point); + + // R = sB - hK + ge_p3_add(&R_calc_point_p3, &sB, &hK); + ge_p3_tobytes(R_bytes_out, &R_calc_point_p3); + } + + if (K_point_out) { + ge_neg(K_point_out, &Kneg_point); + } + + return 0; +} + + +int generalized_eddsa_25519_sign( + unsigned char* signature_out, + const unsigned char* eddsa_25519_pubkey_bytes, + const unsigned char* eddsa_25519_privkey_scalar, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* random, + const unsigned char* customization_label, + const unsigned long customization_label_len) +{ + unsigned char labelset[LABELSETMAXLEN]; + unsigned long labelset_len = 0; + unsigned char R_bytes[POINTLEN]; + unsigned char r_scalar[SCALARLEN]; + unsigned char h_scalar[SCALARLEN]; + unsigned char s_scalar[SCALARLEN]; + unsigned char* M_buf = NULL; + + if (signature_out == NULL) + goto err; + memset(signature_out, 0, SIGNATURELEN); + + if (eddsa_25519_pubkey_bytes == NULL) + goto err; + if (eddsa_25519_privkey_scalar == NULL) + goto err; + if (msg == NULL) + goto err; + if (customization_label == NULL && customization_label_len != 0) + goto err; + if (customization_label_len > LABELMAXLEN) + goto err; + if (msg_len > MSGMAXLEN) + goto err; + + if ((M_buf = malloc(msg_len + MSTART)) == 0) + goto err; + memcpy(M_buf + MSTART, msg, msg_len); + + if (labelset_new(labelset, &labelset_len, LABELSETMAXLEN, NULL, 0, + customization_label, customization_label_len) != 0) + goto err; + + if (generalized_commit(R_bytes, r_scalar, labelset, labelset_len, NULL, 0, + eddsa_25519_pubkey_bytes, eddsa_25519_privkey_scalar, + random, M_buf, MSTART, msg_len) != 0) + goto err; + + if (generalized_challenge(h_scalar, labelset, labelset_len, NULL, 0, + R_bytes, eddsa_25519_pubkey_bytes, M_buf, MSTART, msg_len) != 0) + goto err; + + if (generalized_prove(s_scalar, r_scalar, eddsa_25519_privkey_scalar, h_scalar) != 0) + goto err; + + memcpy(signature_out, R_bytes, POINTLEN); + memcpy(signature_out + POINTLEN, s_scalar, SCALARLEN); + + zeroize(r_scalar, SCALARLEN); + zeroize_stack(); + free(M_buf); + return 0; + +err: + zeroize(r_scalar, SCALARLEN); + zeroize_stack(); + free(M_buf); + return -1; +} + +int generalized_eddsa_25519_verify( + const unsigned char* signature, + const unsigned char* eddsa_25519_pubkey_bytes, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* customization_label, + const unsigned long customization_label_len) +{ + unsigned char labelset[LABELSETMAXLEN]; + unsigned long labelset_len = 0; + const unsigned char* R_bytes = NULL; + const unsigned char* s_scalar = NULL; + unsigned char h_scalar[SCALARLEN]; + unsigned char* M_buf = NULL; + unsigned char R_calc_bytes[POINTLEN]; + + if (signature == NULL) + goto err; + if (eddsa_25519_pubkey_bytes == NULL) + goto err; + if (msg == NULL) + goto err; + if (customization_label == NULL && customization_label_len != 0) + goto err; + if (customization_label_len > LABELMAXLEN) + goto err; + if (msg_len > MSGMAXLEN) + goto err; + + if ((M_buf = malloc(msg_len + MSTART)) == 0) + goto err; + memcpy(M_buf + MSTART, msg, msg_len); + + if (labelset_new(labelset, &labelset_len, LABELSETMAXLEN, NULL, 0, + customization_label, customization_label_len) != 0) + goto err; + + R_bytes = signature; + s_scalar = signature + POINTLEN; + + if (!point_isreduced(eddsa_25519_pubkey_bytes)) + goto err; + if (!point_isreduced(R_bytes)) + goto err; + if (!sc_isreduced(s_scalar)) + goto err; + + if (generalized_challenge(h_scalar, labelset, labelset_len, + NULL, 0, R_bytes, eddsa_25519_pubkey_bytes, M_buf, MSTART, msg_len) != 0) + goto err; + + if (generalized_solve_commitment(R_calc_bytes, NULL, NULL, + s_scalar, eddsa_25519_pubkey_bytes, h_scalar) != 0) + goto err; + + if (crypto_verify_32(R_bytes, R_calc_bytes) != 0) + goto err; + + free(M_buf); + return 0; + +err: + free(M_buf); + return -1; +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_eddsa.h b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_eddsa.h new file mode 100755 index 0000000..0c281bc --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_eddsa.h @@ -0,0 +1,65 @@ +#ifndef __GEN_EDDSA_H__ +#define __GEN_EDDSA_H__ + +#include "ge.h" + +/* B: base point + R: commitment (point), + r: private nonce (scalar) + K: encoded public key + k: private key (scalar) + Z: 32-bytes random + M: buffer containing message, message starts at M_start, continues for M_len + + r = hash(B || labelset || Z || pad1 || k || pad2 || labelset || K || extra || M) (mod q) +*/ +int generalized_commit(unsigned char* R_bytes, unsigned char* r_scalar, + const unsigned char* labelset, const unsigned long labelset_len, + const unsigned char* extra, const unsigned long extra_len, + const unsigned char* K_bytes, const unsigned char* k_scalar, + const unsigned char* Z, + unsigned char* M_buf, const unsigned long M_start, const unsigned long M_len); + +/* if is_labelset_empty(labelset): + return hash(R || K || M) (mod q) + else: + return hash(B || labelset || R || labelset || K || extra || M) (mod q) +*/ +int generalized_challenge(unsigned char* h_scalar, + const unsigned char* labelset, const unsigned long labelset_len, + const unsigned char* extra, const unsigned long extra_len, + const unsigned char* R_bytes, + const unsigned char* K_bytes, + unsigned char* M_buf, const unsigned long M_start, const unsigned long M_len); + +/* return r + kh (mod q) */ +int generalized_prove(unsigned char* out_scalar, + const unsigned char* r_scalar, + const unsigned char* k_scalar, + const unsigned char* h_scalar); + +/* R = B^s / K^h */ +int generalized_solve_commitment(unsigned char* R_bytes_out, ge_p3* K_point_out, + const ge_p3* B_point, const unsigned char* s_scalar, + const unsigned char* K_bytes, const unsigned char* h_scalar); + + +int generalized_eddsa_25519_sign( + unsigned char* signature_out, + const unsigned char* eddsa_25519_pubkey_bytes, + const unsigned char* eddsa_25519_privkey_scalar, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* random, + const unsigned char* customization_label, + const unsigned long customization_label_len); + +int generalized_eddsa_25519_verify( + const unsigned char* signature, + const unsigned char* eddsa_25519_pubkey, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* customization_label, + const unsigned long customization_label_len); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_labelset.c b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_labelset.c new file mode 100755 index 0000000..b181cad --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_labelset.c @@ -0,0 +1,157 @@ +#include +#include +#include "gen_labelset.h" +#include "gen_constants.h" + +const unsigned char B_bytes[] = { + 0x58, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, +}; + +unsigned char* buffer_add(unsigned char* bufptr, const unsigned char* bufend, + const unsigned char* in, const unsigned long in_len) +{ + unsigned long count = 0; + + if (bufptr == NULL || bufend == NULL || bufptr > bufend) + return NULL; + if (in == NULL && in_len != 0) + return NULL; + if (bufend - bufptr < in_len) + return NULL; + + for (count=0; count < in_len; count++) { + if (bufptr >= bufend) + return NULL; + *bufptr++ = *in++; + } + return bufptr; +} + +unsigned char* buffer_pad(const unsigned char* buf, unsigned char* bufptr, const unsigned char* bufend) +{ + unsigned long count = 0; + unsigned long pad_len = 0; + + if (buf == NULL || bufptr == NULL || bufend == NULL || bufptr >= bufend || bufptr < buf) + return NULL; + + pad_len = (BLOCKLEN - ((bufptr-buf) % BLOCKLEN)) % BLOCKLEN; + if (bufend - bufptr < pad_len) + return NULL; + + for (count=0; count < pad_len; count++) { + if (bufptr >= bufend) + return NULL; + *bufptr++ = 0; + } + return bufptr; +} + +int labelset_new(unsigned char* labelset, unsigned long* labelset_len, const unsigned long labelset_maxlen, + const unsigned char* protocol_name, const unsigned char protocol_name_len, + const unsigned char* customization_label, const unsigned char customization_label_len) +{ + unsigned char* bufptr; + + *labelset_len = 0; + if (labelset == NULL) + return -1; + if (labelset_len == NULL) + return -1; + if (labelset_maxlen > LABELSETMAXLEN) + return -1; + if (labelset_maxlen < 3 + protocol_name_len + customization_label_len) + return -1; + if (protocol_name == NULL && protocol_name_len != 0) + return -1; + if (customization_label == NULL && customization_label_len != 0) + return -1; + if (protocol_name_len > LABELMAXLEN) + return -1; + if (customization_label_len > LABELMAXLEN) + return -1; + + bufptr = labelset; + *bufptr++ = 2; + *bufptr++ = protocol_name_len; + bufptr = buffer_add(bufptr, labelset + labelset_maxlen, protocol_name, protocol_name_len); + if (bufptr != NULL && bufptr < labelset + labelset_maxlen) + *bufptr++ = customization_label_len; + bufptr = buffer_add(bufptr, labelset + labelset_maxlen, + customization_label, customization_label_len); + + if (bufptr != NULL && bufptr - labelset == 3 + protocol_name_len + customization_label_len) { + *labelset_len = bufptr - labelset; + return 0; + } + return -1; +} + + +int labelset_add(unsigned char* labelset, unsigned long* labelset_len, const unsigned long labelset_maxlen, + const unsigned char* label, const unsigned char label_len) +{ + unsigned char* bufptr; + if (labelset_len == NULL) + return -1; + if (*labelset_len > LABELSETMAXLEN || labelset_maxlen > LABELSETMAXLEN) + return -1; + if (*labelset_len >= labelset_maxlen || *labelset_len + label_len + 1 > labelset_maxlen) + return -1; + if (*labelset_len < 3 || labelset_maxlen < 4) + return -1; + if (label_len > LABELMAXLEN) + return -1; + + labelset[0]++; + labelset[*labelset_len] = label_len; + bufptr = labelset + *labelset_len + 1; + bufptr = buffer_add(bufptr, labelset + labelset_maxlen, label, label_len); + if (bufptr == NULL) + return -1; + if (bufptr - labelset >= labelset_maxlen) + return -1; + if (bufptr - labelset != *labelset_len + 1 + label_len) + return -1; + + *labelset_len += (1 + label_len); + return 0; +} + +int labelset_validate(const unsigned char* labelset, const unsigned long labelset_len) +{ + unsigned char num_labels = 0; + unsigned char count = 0; + unsigned long offset = 0; + unsigned char label_len = 0; + + if (labelset == NULL) + return -1; + if (labelset_len < 3 || labelset_len > LABELSETMAXLEN) + return -1; + + num_labels = labelset[0]; + offset = 1; + for (count = 0; count < num_labels; count++) { + label_len = labelset[offset]; + if (label_len > LABELMAXLEN) + return -1; + offset += 1 + label_len; + if (offset > labelset_len) + return -1; + } + if (offset != labelset_len) + return -1; + return 0; +} + +int labelset_is_empty(const unsigned char* labelset, const unsigned long labelset_len) +{ + if (labelset_len != 3) + return 0; + return 1; +} + diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_labelset.h b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_labelset.h new file mode 100755 index 0000000..6ac40da --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_labelset.h @@ -0,0 +1,23 @@ +#ifndef __GEN_LABELSET_H__ +#define __GEN_LABELSET_H__ + +extern const unsigned char B_bytes[]; + +unsigned char* buffer_add(unsigned char* bufptr, const unsigned char* bufend, + const unsigned char* in, const unsigned long in_len); + +unsigned char* buffer_pad(const unsigned char* buf, unsigned char* bufptr, const unsigned char* bufend); + + +int labelset_new(unsigned char* labelset, unsigned long* labelset_len, const unsigned long labelset_maxlen, + const unsigned char* protocol_name, const unsigned char protocol_name_len, + const unsigned char* customization_label, const unsigned char customization_label_len); + +int labelset_add(unsigned char* labelset, unsigned long* labelset_len, const unsigned long labelset_maxlen, + const unsigned char* label, const unsigned char label_len); + +int labelset_validate(const unsigned char* labelset, const unsigned long labelset_len); + +int labelset_is_empty(const unsigned char* labelset, const unsigned long labelset_len); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_veddsa.c b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_veddsa.c new file mode 100755 index 0000000..4e79b48 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_veddsa.c @@ -0,0 +1,312 @@ +#include +#include "gen_eddsa.h" +#include "gen_veddsa.h" +#include "gen_constants.h" +#include "gen_labelset.h" +#include "gen_crypto_additions.h" +#include "crypto_hash_sha512.h" +#include "crypto_verify_32.h" +#include "crypto_additions.h" +#include "zeroize.h" +#include "ge.h" +#include "sc.h" +#include "utility.h" + +static int generalized_calculate_Bv(ge_p3* Bv_point, + const unsigned char* labelset, const unsigned long labelset_len, + const unsigned char* K_bytes, + unsigned char* M_buf, const unsigned long M_start, const unsigned long M_len) +{ + unsigned char* bufptr; + unsigned long prefix_len = 0; + + if (labelset_validate(labelset, labelset_len) != 0) + return -1; + if (Bv_point == NULL || K_bytes == NULL || M_buf == NULL) + return -1; + + prefix_len = 2*POINTLEN + labelset_len; + if (prefix_len > M_start) + return -1; + + bufptr = M_buf + M_start - prefix_len; + bufptr = buffer_add(bufptr, M_buf + M_start, B_bytes, POINTLEN); + bufptr = buffer_add(bufptr, M_buf + M_start, labelset, labelset_len); + bufptr = buffer_add(bufptr, M_buf + M_start, K_bytes, POINTLEN); + if (bufptr == NULL || bufptr != M_buf + M_start) + return -1; + + hash_to_point(Bv_point, M_buf + M_start - prefix_len, prefix_len + M_len); + if (ge_isneutral(Bv_point)) + return -1; + return 0; +} + +static int generalized_calculate_vrf_output(unsigned char* vrf_output, + const unsigned char* labelset, const unsigned long labelset_len, + const ge_p3* cKv_point) +{ + unsigned char buf[BUFLEN]; + unsigned char* bufptr = buf; + unsigned char* bufend = buf + BUFLEN; + unsigned char cKv_bytes[POINTLEN]; + unsigned char hash[HASHLEN]; + + if (vrf_output == NULL) + return -1; + memset(vrf_output, 0, VRFOUTPUTLEN); + + if (labelset_len + 2*POINTLEN > BUFLEN) + return -1; + if (labelset_validate(labelset, labelset_len) != 0) + return -1; + if (cKv_point == NULL) + return -1; + if (VRFOUTPUTLEN > HASHLEN) + return -1; + + ge_p3_tobytes(cKv_bytes, cKv_point); + + bufptr = buffer_add(bufptr, bufend, B_bytes, POINTLEN); + bufptr = buffer_add(bufptr, bufend, labelset, labelset_len); + bufptr = buffer_add(bufptr, bufend, cKv_bytes, POINTLEN); + if (bufptr == NULL) + return -1; + if (bufptr - buf > BUFLEN) + return -1; + crypto_hash_sha512(hash, buf, bufptr - buf); + memcpy(vrf_output, hash, VRFOUTPUTLEN); + return 0; +} + +int generalized_veddsa_25519_sign( + unsigned char* signature_out, + const unsigned char* eddsa_25519_pubkey_bytes, + const unsigned char* eddsa_25519_privkey_scalar, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* random, + const unsigned char* customization_label, + const unsigned long customization_label_len) +{ + unsigned char labelset[LABELSETMAXLEN]; + unsigned long labelset_len = 0; + ge_p3 Bv_point; + ge_p3 Kv_point; + ge_p3 Rv_point; + unsigned char Bv_bytes[POINTLEN]; + unsigned char Kv_bytes[POINTLEN]; + unsigned char Rv_bytes[POINTLEN]; + unsigned char R_bytes[POINTLEN]; + unsigned char r_scalar[SCALARLEN]; + unsigned char h_scalar[SCALARLEN]; + unsigned char s_scalar[SCALARLEN]; + unsigned char extra[3*POINTLEN]; + unsigned char* M_buf = NULL; + char* protocol_name = "VEdDSA_25519_SHA512_Elligator2"; + + if (signature_out == NULL) + goto err; + memset(signature_out, 0, VRFSIGNATURELEN); + + if (eddsa_25519_pubkey_bytes == NULL) + goto err; + if (eddsa_25519_privkey_scalar == NULL) + goto err; + if (msg == NULL) + goto err; + if (customization_label == NULL && customization_label_len != 0) + goto err; + if (customization_label_len > LABELMAXLEN) + goto err; + if (msg_len > MSGMAXLEN) + goto err; + + if ((M_buf = malloc(msg_len + MSTART)) == 0) { + goto err; + } + memcpy(M_buf + MSTART, msg, msg_len); + + // labelset = new_labelset(protocol_name, customization_label) + if (labelset_new(labelset, &labelset_len, LABELSETMAXLEN, + (unsigned char*)protocol_name, strlen(protocol_name), + customization_label, customization_label_len) != 0) + goto err; + + // labelset1 = add_label(labels, "1") + // Bv = hash(hash(labelset1 || K) || M) + // Kv = k * Bv + labelset_add(labelset, &labelset_len, LABELSETMAXLEN, (unsigned char*)"1", 1); + if (generalized_calculate_Bv(&Bv_point, labelset, labelset_len, + eddsa_25519_pubkey_bytes, M_buf, MSTART, msg_len) != 0) + goto err; + ge_scalarmult(&Kv_point, eddsa_25519_privkey_scalar, &Bv_point); + ge_p3_tobytes(Bv_bytes, &Bv_point); + ge_p3_tobytes(Kv_bytes, &Kv_point); + + // labelset2 = add_label(labels, "2") + // R, r = commit(labelset2, (Bv || Kv), (K,k), Z, M) + labelset[labelset_len-1] = (unsigned char)'2'; + memcpy(extra, Bv_bytes, POINTLEN); + memcpy(extra + POINTLEN, Kv_bytes, POINTLEN); + if (generalized_commit(R_bytes, r_scalar, + labelset, labelset_len, + extra, 2*POINTLEN, + eddsa_25519_pubkey_bytes, eddsa_25519_privkey_scalar, + random, M_buf, MSTART, msg_len) != 0) + goto err; + + // Rv = r * Bv + ge_scalarmult(&Rv_point, r_scalar, &Bv_point); + ge_p3_tobytes(Rv_bytes, &Rv_point); + + // labelset3 = add_label(labels, "3") + // h = challenge(labelset3, (Bv || Kv || Rv), R, K, M) + labelset[labelset_len-1] = (unsigned char)'3'; + memcpy(extra + 2*POINTLEN, Rv_bytes, POINTLEN); + if (generalized_challenge(h_scalar, + labelset, labelset_len, + extra, 3*POINTLEN, + R_bytes, eddsa_25519_pubkey_bytes, + M_buf, MSTART, msg_len) != 0) + goto err; + + // s = prove(r, k, h) + if (generalized_prove(s_scalar, r_scalar, eddsa_25519_privkey_scalar, h_scalar) != 0) + goto err; + + // return (Kv || h || s) + memcpy(signature_out, Kv_bytes, POINTLEN); + memcpy(signature_out + POINTLEN, h_scalar, SCALARLEN); + memcpy(signature_out + POINTLEN + SCALARLEN, s_scalar, SCALARLEN); + + zeroize(r_scalar, SCALARLEN); + zeroize_stack(); + free(M_buf); + return 0; + +err: + zeroize(r_scalar, SCALARLEN); + zeroize_stack(); + free(M_buf); + return -1; +} + +int generalized_veddsa_25519_verify( + unsigned char* vrf_out, + const unsigned char* signature, + const unsigned char* eddsa_25519_pubkey_bytes, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* customization_label, + const unsigned long customization_label_len) +{ + unsigned char labelset[LABELSETMAXLEN]; + unsigned long labelset_len = 0; + const unsigned char* Kv_bytes; + const unsigned char* h_scalar; + const unsigned char* s_scalar; + ge_p3 Bv_point, K_point, Kv_point, cK_point, cKv_point; + unsigned char Bv_bytes[POINTLEN]; + unsigned char R_calc_bytes[POINTLEN]; + unsigned char Rv_calc_bytes[POINTLEN]; + unsigned char h_calc_scalar[SCALARLEN]; + unsigned char extra[3*POINTLEN]; + unsigned char* M_buf = NULL; + char* protocol_name = "VEdDSA_25519_SHA512_Elligator2"; + + if (vrf_out == NULL) + goto err; + memset(vrf_out, 0, VRFOUTPUTLEN); + + if (signature == NULL) + goto err; + if (eddsa_25519_pubkey_bytes == NULL) + goto err; + if (msg == NULL) + goto err; + if (customization_label == NULL && customization_label_len != 0) + goto err; + if (customization_label_len > LABELMAXLEN) + goto err; + if (msg_len > MSGMAXLEN) + goto err; + + if ((M_buf = malloc(msg_len + MSTART)) == 0) { + goto err; + } + memcpy(M_buf + MSTART, msg, msg_len); + + Kv_bytes = signature; + h_scalar = signature + POINTLEN; + s_scalar = signature + POINTLEN + SCALARLEN; + + if (!point_isreduced(eddsa_25519_pubkey_bytes)) + goto err; + if (!point_isreduced(Kv_bytes)) + goto err; + if (!sc_isreduced(h_scalar)) + goto err; + if (!sc_isreduced(s_scalar)) + goto err; + + // labelset = new_labelset(protocol_name, customization_label) + if (labelset_new(labelset, &labelset_len, LABELSETMAXLEN, + (unsigned char*)protocol_name, strlen(protocol_name), + customization_label, customization_label_len) != 0) + goto err; + + // labelset1 = add_label(labels, "1") + // Bv = hash(hash(labelset1 || K) || M) + labelset_add(labelset, &labelset_len, LABELSETMAXLEN, (unsigned char*)"1", 1); + if (generalized_calculate_Bv(&Bv_point, labelset, labelset_len, + eddsa_25519_pubkey_bytes, M_buf, MSTART, msg_len) != 0) + goto err; + ge_p3_tobytes(Bv_bytes, &Bv_point); + + // R = solve_commitment(B, s, K, h) + if (generalized_solve_commitment(R_calc_bytes, &K_point, NULL, + s_scalar, eddsa_25519_pubkey_bytes, h_scalar) != 0) + goto err; + + // Rv = solve_commitment(Bv, s, Kv, h) + if (generalized_solve_commitment(Rv_calc_bytes, &Kv_point, &Bv_point, + s_scalar, Kv_bytes, h_scalar) != 0) + goto err; + + ge_scalarmult_cofactor(&cK_point, &K_point); + ge_scalarmult_cofactor(&cKv_point, &Kv_point); + if (ge_isneutral(&cK_point) || ge_isneutral(&cKv_point) || ge_isneutral(&Bv_point)) + goto err; + + // labelset3 = add_label(labels, "3") + // h = challenge(labelset3, (Bv || Kv || Rv), R, K, M) + labelset[labelset_len-1] = (unsigned char)'3'; + memcpy(extra, Bv_bytes, POINTLEN); + memcpy(extra + POINTLEN, Kv_bytes, POINTLEN); + memcpy(extra + 2*POINTLEN, Rv_calc_bytes, POINTLEN); + if (generalized_challenge(h_calc_scalar, + labelset, labelset_len, + extra, 3*POINTLEN, + R_calc_bytes, eddsa_25519_pubkey_bytes, + M_buf, MSTART, msg_len) != 0) + goto err; + + // if bytes_equal(h, h') + if (crypto_verify_32(h_scalar, h_calc_scalar) != 0) + goto err; + + // labelset4 = add_label(labels, "4") + // v = hash(labelset4 || c*Kv) + labelset[labelset_len-1] = (unsigned char)'4'; + if (generalized_calculate_vrf_output(vrf_out, labelset, labelset_len, &cKv_point) != 0) + goto err; + + free(M_buf); + return 0; + +err: + free(M_buf); + return -1; +} + diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_veddsa.h b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_veddsa.h new file mode 100755 index 0000000..1bc27a6 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_veddsa.h @@ -0,0 +1,23 @@ +#ifndef __GEN_VEDDSA_H__ +#define __GEN_VEDDSA_H__ + +int generalized_veddsa_25519_sign( + unsigned char* signature_out, + const unsigned char* eddsa_25519_pubkey_bytes, + const unsigned char* eddsa_25519_privkey_scalar, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* random, + const unsigned char* customization_label, + const unsigned long customization_label_len); + +int generalized_veddsa_25519_verify( + unsigned char* vrf_out, + const unsigned char* signature, + const unsigned char* eddsa_25519_pubkey_bytes, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* customization_label, + const unsigned long customization_label_len); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_x.c b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_x.c new file mode 100755 index 0000000..d4df5c1 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_x.c @@ -0,0 +1,131 @@ +#include +#include "crypto_additions.h" +#include "gen_x.h" +#include "gen_constants.h" +#include "gen_eddsa.h" +#include "gen_veddsa.h" +#include "gen_crypto_additions.h" +#include "zeroize.h" + +static int convert_25519_pubkey(unsigned char* ed_pubkey_bytes, const unsigned char* x25519_pubkey_bytes) { + fe u; + fe y; + + /* Convert the X25519 public key into an Ed25519 public key. + + y = (u - 1) / (u + 1) + + NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp + */ + if (!fe_isreduced(x25519_pubkey_bytes)) + return -1; + fe_frombytes(u, x25519_pubkey_bytes); + fe_montx_to_edy(y, u); + fe_tobytes(ed_pubkey_bytes, y); + return 0; +} + +static int calculate_25519_keypair(unsigned char* K_bytes, unsigned char* k_scalar, + const unsigned char* x25519_privkey_scalar) +{ + unsigned char kneg[SCALARLEN]; + ge_p3 ed_pubkey_point; + unsigned char sign_bit = 0; + + if (SCALARLEN != 32) + return -1; + + /* Convert the Curve25519 privkey to an Ed25519 public key */ + ge_scalarmult_base(&ed_pubkey_point, x25519_privkey_scalar); + ge_p3_tobytes(K_bytes, &ed_pubkey_point); + + /* Force Edwards sign bit to zero */ + sign_bit = (K_bytes[31] & 0x80) >> 7; + memcpy(k_scalar, x25519_privkey_scalar, 32); + sc_neg(kneg, k_scalar); + sc_cmov(k_scalar, kneg, sign_bit); + K_bytes[31] &= 0x7F; + + zeroize(kneg, SCALARLEN); + return 0; +} + +int generalized_xeddsa_25519_sign(unsigned char* signature_out, + const unsigned char* x25519_privkey_scalar, + const unsigned char* msg, const unsigned long msg_len, + const unsigned char* random, + const unsigned char* customization_label, + const unsigned long customization_label_len) +{ + unsigned char K_bytes[POINTLEN]; + unsigned char k_scalar[SCALARLEN]; + int retval = -1; + + if (calculate_25519_keypair(K_bytes, k_scalar, x25519_privkey_scalar) != 0) + return -1; + + retval = generalized_eddsa_25519_sign(signature_out, + K_bytes, k_scalar, + msg, msg_len, random, + customization_label, customization_label_len); + zeroize(k_scalar, SCALARLEN); + return retval; +} + +int generalized_xveddsa_25519_sign( + unsigned char* signature_out, + const unsigned char* x25519_privkey_scalar, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* random, + const unsigned char* customization_label, + const unsigned long customization_label_len) +{ + unsigned char K_bytes[POINTLEN]; + unsigned char k_scalar[SCALARLEN]; + int retval = -1; + + if (calculate_25519_keypair(K_bytes, k_scalar, x25519_privkey_scalar) != 0) + return -1; + + retval = generalized_veddsa_25519_sign(signature_out, K_bytes, k_scalar, + msg, msg_len, random, + customization_label, customization_label_len); + zeroize(k_scalar, SCALARLEN); + return retval; +} + +int generalized_xeddsa_25519_verify( + const unsigned char* signature, + const unsigned char* x25519_pubkey_bytes, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* customization_label, + const unsigned long customization_label_len) +{ + unsigned char K_bytes[POINTLEN]; + + if (convert_25519_pubkey(K_bytes, x25519_pubkey_bytes) != 0) + return -1; + + return generalized_eddsa_25519_verify(signature, K_bytes, msg, msg_len, + customization_label, customization_label_len); +} + +int generalized_xveddsa_25519_verify( + unsigned char* vrf_out, + const unsigned char* signature, + const unsigned char* x25519_pubkey_bytes, + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* customization_label, + const unsigned long customization_label_len) +{ + unsigned char K_bytes[POINTLEN]; + + if (convert_25519_pubkey(K_bytes, x25519_pubkey_bytes) != 0) + return -1; + + return generalized_veddsa_25519_verify(vrf_out, signature, K_bytes, msg, msg_len, + customization_label, customization_label_len); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_x.h b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_x.h new file mode 100755 index 0000000..3c4c04c --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/gen_x.h @@ -0,0 +1,37 @@ +#ifndef __GEN_X_H +#define __GEN_X_H + +int generalized_xeddsa_25519_sign(unsigned char* signature_out, /* 64 bytes */ + const unsigned char* x25519_privkey_scalar, /* 32 bytes */ + const unsigned char* msg, const unsigned long msg_len, + const unsigned char* random, /* 32 bytes */ + const unsigned char* customization_label, + const unsigned long customization_label_len); + +int generalized_xeddsa_25519_verify( + const unsigned char* signature, /* 64 bytes */ + const unsigned char* x25519_pubkey_bytes, /* 32 bytes */ + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* customization_label, + const unsigned long customization_label_len); + +int generalized_xveddsa_25519_sign( + unsigned char* signature_out, /* 96 bytes */ + const unsigned char* x25519_privkey_scalar, /* 32 bytes */ + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* random, /* 32 bytes */ + const unsigned char* customization_label, + const unsigned long customization_label_len); + +int generalized_xveddsa_25519_verify( + unsigned char* vrf_out, /* 32 bytes */ + const unsigned char* signature, /* 96 bytes */ + const unsigned char* x25519_pubkey_bytes, /* 32 bytes */ + const unsigned char* msg, + const unsigned long msg_len, + const unsigned char* customization_label, + const unsigned long customization_label_len); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/point_isreduced.c b/Sources/libsignal/curve25519/ed25519/additions/generalized/point_isreduced.c new file mode 100755 index 0000000..5541ffe --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/point_isreduced.c @@ -0,0 +1,12 @@ +#include +#include "fe.h" +#include "crypto_additions.h" + +int point_isreduced(const unsigned char* p) +{ + unsigned char strict[32]; + + memmove(strict, p, 32); + strict[31] &= 0x7F; /* mask off sign bit */ + return fe_isreduced(strict); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/generalized/sc_isreduced.c b/Sources/libsignal/curve25519/ed25519/additions/generalized/sc_isreduced.c new file mode 100755 index 0000000..2419380 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/generalized/sc_isreduced.c @@ -0,0 +1,17 @@ +#include +#include "fe.h" +#include "sc.h" +#include "crypto_additions.h" +#include "crypto_verify_32.h" + +int sc_isreduced(const unsigned char* s) +{ + unsigned char strict[64]; + + memset(strict, 0, 64); + memmove(strict, s, 32); + sc_reduce(strict); + if (crypto_verify_32(strict, s) != 0) + return 0; + return 1; +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/keygen.c b/Sources/libsignal/curve25519/ed25519/additions/keygen.c new file mode 100755 index 0000000..de7cdcd --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/keygen.c @@ -0,0 +1,21 @@ +#include "ge.h" +#include "keygen.h" +#include "crypto_additions.h" + +void curve25519_keygen(unsigned char* curve25519_pubkey_out, + const unsigned char* curve25519_privkey_in) +{ + /* Perform a fixed-base multiplication of the Edwards base point, + (which is efficient due to precalculated tables), then convert + to the Curve25519 montgomery-format public key. + + NOTE: y=1 is converted to u=0 since fe_invert is mod-exp + */ + + ge_p3 ed; /* Ed25519 pubkey point */ + fe u; + + ge_scalarmult_base(&ed, curve25519_privkey_in); + ge_p3_to_montx(u, &ed); + fe_tobytes(curve25519_pubkey_out, u); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/keygen.h b/Sources/libsignal/curve25519/ed25519/additions/keygen.h new file mode 100755 index 0000000..e86e7c5 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/keygen.h @@ -0,0 +1,12 @@ + +#ifndef __KEYGEN_H__ +#define __KEYGEN_H__ + +/* Sets and clears bits to make a random 32 bytes into a private key */ +void sc_clamp(unsigned char* a); + +/* The private key should be 32 random bytes "clamped" by sc_clamp() */ +void curve25519_keygen(unsigned char* curve25519_pubkey_out, /* 32 bytes */ + const unsigned char* curve25519_privkey_in); /* 32 bytes */ + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/open_modified.c b/Sources/libsignal/curve25519/ed25519/additions/open_modified.c new file mode 100755 index 0000000..a156098 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/open_modified.c @@ -0,0 +1,45 @@ +#include +#include "crypto_sign.h" +#include "crypto_hash_sha512.h" +#include "crypto_verify_32.h" +#include "ge.h" +#include "sc.h" +#include "crypto_additions.h" + +int crypto_sign_open_modified( + unsigned char *m, + const unsigned char *sm,unsigned long long smlen, + const unsigned char *pk +) +{ + unsigned char pkcopy[32]; + unsigned char rcopy[32]; + unsigned char scopy[32]; + unsigned char h[64]; + unsigned char rcheck[32]; + ge_p3 A; + ge_p2 R; + + if (smlen < 64) goto badsig; + if (sm[63] & 224) goto badsig; /* strict parsing of s */ + if (ge_frombytes_negate_vartime(&A,pk) != 0) goto badsig; + + memmove(pkcopy,pk,32); + memmove(rcopy,sm,32); + memmove(scopy,sm + 32,32); + + memmove(m,sm,smlen); + memmove(m + 32,pkcopy,32); + crypto_hash_sha512(h,m,smlen); + sc_reduce(h); + + ge_double_scalarmult_vartime(&R,h,&A,scopy); + ge_tobytes(rcheck,&R); + + if (crypto_verify_32(rcheck,rcopy) == 0) { + return 0; + } + +badsig: + return -1; +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/sc_clamp.c b/Sources/libsignal/curve25519/ed25519/additions/sc_clamp.c new file mode 100755 index 0000000..7788be9 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/sc_clamp.c @@ -0,0 +1,8 @@ +#include "crypto_additions.h" + +void sc_clamp(unsigned char* a) +{ + a[0] &= 248; + a[31] &= 127; + a[31] |= 64; +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/sc_cmov.c b/Sources/libsignal/curve25519/ed25519/additions/sc_cmov.c new file mode 100755 index 0000000..443a5bb --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/sc_cmov.c @@ -0,0 +1,21 @@ +#include "crypto_additions.h" + +/* +Replace (f,g) with (g,g) if b == 1; +replace (f,g) with (f,g) if b == 0. + +Preconditions: b in {0,1}. +*/ + +void sc_cmov(unsigned char* f, const unsigned char* g, unsigned char b) +{ + int count=32; + unsigned char x[32]; + for (count=0; count < 32; count++) + x[count] = f[count] ^ g[count]; + b = -b; + for (count=0; count < 32; count++) + x[count] &= b; + for (count=0; count < 32; count++) + f[count] = f[count] ^ x[count]; +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/sc_neg.c b/Sources/libsignal/curve25519/ed25519/additions/sc_neg.c new file mode 100755 index 0000000..ef407d4 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/sc_neg.c @@ -0,0 +1,25 @@ +#include +#include "crypto_additions.h" +#include "sc.h" + +/* l = order of base point = 2^252 + 27742317777372353535851937790883648493 */ + +/* +static unsigned char l[32] = {0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, + 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0, 0x10}; +*/ + +static unsigned char lminus1[32] = {0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, + 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10}; + +/* b = -a (mod l) */ +void sc_neg(unsigned char *b, const unsigned char *a) +{ + unsigned char zero[32]; + memset(zero, 0, 32); + sc_muladd(b, lminus1, a, zero); /* b = (-1)a + 0 (mod l) */ +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/sign_modified.c b/Sources/libsignal/curve25519/ed25519/additions/sign_modified.c new file mode 100755 index 0000000..b2fb8c2 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/sign_modified.c @@ -0,0 +1,53 @@ +#include +#include "crypto_sign.h" +#include "crypto_hash_sha512.h" +#include "ge.h" +#include "sc.h" +#include "zeroize.h" +#include "crypto_additions.h" + +/* NEW: Compare to pristine crypto_sign() + Uses explicit private key for nonce derivation and as scalar, + instead of deriving both from a master key. +*/ +int crypto_sign_modified( + unsigned char *sm, + const unsigned char *m,unsigned long long mlen, + const unsigned char *sk, const unsigned char* pk, + const unsigned char* random +) +{ + unsigned char nonce[64]; + unsigned char hram[64]; + ge_p3 R; + int count=0; + + memmove(sm + 64,m,mlen); + memmove(sm + 32,sk,32); /* NEW: Use privkey directly for nonce derivation */ + + /* NEW : add prefix to separate hash uses - see .h */ + sm[0] = 0xFE; + for (count = 1; count < 32; count++) + sm[count] = 0xFF; + + /* NEW: add suffix of random data */ + memmove(sm + mlen + 64, random, 64); + + crypto_hash_sha512(nonce,sm,mlen + 128); + memmove(sm + 32,pk,32); + + sc_reduce(nonce); + + ge_scalarmult_base(&R,nonce); + ge_p3_tobytes(sm,&R); + + crypto_hash_sha512(hram,sm,mlen + 64); + sc_reduce(hram); + sc_muladd(sm + 32,hram,sk,nonce); /* NEW: Use privkey directly */ + + /* Erase any traces of private scalar or + nonce left in the stack from sc_muladd */ + zeroize_stack(); + zeroize(nonce, 64); + return 0; +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/utility.c b/Sources/libsignal/curve25519/ed25519/additions/utility.c new file mode 100755 index 0000000..c59099a --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/utility.c @@ -0,0 +1,29 @@ +#include +#include +#include "utility.h" + +void print_vector(const char* name, const unsigned char* v) +{ + int count; + printf("%s = \n", name); + for (count = 0; count < 32; count++) + printf("%02x ", v[count]); + printf("\n"); +} + +void print_bytes(const char* name, const unsigned char* v, int numbytes) +{ + int count; + printf("%s = \n", name); + for (count = 0; count < numbytes; count++) + printf("%02x ", v[count]); + printf("\n"); +} + +void print_fe(const char* name, const fe in) +{ + unsigned char bytes[32]; + fe_tobytes(bytes, in); + print_vector(name, bytes); +} + diff --git a/Sources/libsignal/curve25519/ed25519/additions/utility.h b/Sources/libsignal/curve25519/ed25519/additions/utility.h new file mode 100755 index 0000000..3534878 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/utility.h @@ -0,0 +1,11 @@ + +#ifndef __UTILITY_H__ +#define __UTILITY_H__ + +#include "fe.h" + +void print_vector(const char* name, const unsigned char* v); +void print_bytes(const char* name, const unsigned char* v, int numbytes); +void print_fe(const char* name, const fe in); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/xeddsa.c b/Sources/libsignal/curve25519/ed25519/additions/xeddsa.c new file mode 100755 index 0000000..63b73bf --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/xeddsa.c @@ -0,0 +1,80 @@ +#include +#include "ge.h" +#include "crypto_additions.h" +#include "zeroize.h" +#include "xeddsa.h" +#include "crypto_verify_32.h" + +int xed25519_sign(unsigned char* signature_out, + const unsigned char* curve25519_privkey, + const unsigned char* msg, const unsigned long msg_len, + const unsigned char* random) +{ + unsigned char a[32], aneg[32]; + unsigned char A[32]; + ge_p3 ed_pubkey_point; + unsigned char *sigbuf; /* working buffer */ + unsigned char sign_bit = 0; + + if ((sigbuf = malloc(msg_len + 128)) == 0) { + memset(signature_out, 0, 64); + return -1; + } + + /* Convert the Curve25519 privkey to an Ed25519 public key */ + ge_scalarmult_base(&ed_pubkey_point, curve25519_privkey); + ge_p3_tobytes(A, &ed_pubkey_point); + + /* Force Edwards sign bit to zero */ + sign_bit = (A[31] & 0x80) >> 7; + memcpy(a, curve25519_privkey, 32); + sc_neg(aneg, a); + sc_cmov(a, aneg, sign_bit); + A[31] &= 0x7F; + + /* Perform an Ed25519 signature with explicit private key */ + crypto_sign_modified(sigbuf, msg, msg_len, a, A, random); + memmove(signature_out, sigbuf, 64); + + zeroize(a, 32); + zeroize(aneg, 32); + free(sigbuf); + return 0; +} + +int xed25519_verify(const unsigned char* signature, + const unsigned char* curve25519_pubkey, + const unsigned char* msg, const unsigned long msg_len) +{ + fe u; + fe y; + unsigned char ed_pubkey[32]; + unsigned char verifybuf[MAX_MSG_LEN + 64]; /* working buffer */ + unsigned char verifybuf2[MAX_MSG_LEN + 64]; /* working buffer #2 */ + + if (msg_len > MAX_MSG_LEN) { + return -1; + } + + /* Convert the Curve25519 public key into an Ed25519 public key. + + y = (u - 1) / (u + 1) + + NOTE: u=-1 is converted to y=0 since fe_invert is mod-exp + */ + if (!fe_isreduced(curve25519_pubkey)) + return -1; + fe_frombytes(u, curve25519_pubkey); + fe_montx_to_edy(y, u); + fe_tobytes(ed_pubkey, y); + + memmove(verifybuf, signature, 64); + memmove(verifybuf+64, msg, msg_len); + + /* Then perform a normal Ed25519 verification, return 0 on success */ + /* The below call has a strange API: */ + /* verifybuf = R || S || message */ + /* verifybuf2 = internal to next call gets a copy of verifybuf, S gets + replaced with pubkey for hashing */ + return crypto_sign_open_modified(verifybuf2, verifybuf, 64 + msg_len, ed_pubkey); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/xeddsa.h b/Sources/libsignal/curve25519/ed25519/additions/xeddsa.h new file mode 100755 index 0000000..b86d7f0 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/xeddsa.h @@ -0,0 +1,16 @@ + +#ifndef __XEDDSA_H__ +#define __XEDDSA_H__ + +/* returns 0 on success */ +int xed25519_sign(unsigned char* signature_out, /* 64 bytes */ + const unsigned char* curve25519_privkey, /* 32 bytes */ + const unsigned char* msg, const unsigned long msg_len, /* <= 256 bytes */ + const unsigned char* random); /* 64 bytes */ + +/* returns 0 on success */ +int xed25519_verify(const unsigned char* signature, /* 64 bytes */ + const unsigned char* curve25519_pubkey, /* 32 bytes */ + const unsigned char* msg, const unsigned long msg_len); /* <= 256 bytes */ + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/additions/zeroize.c b/Sources/libsignal/curve25519/ed25519/additions/zeroize.c new file mode 100755 index 0000000..187e725 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/zeroize.c @@ -0,0 +1,16 @@ +#include "zeroize.h" + +void zeroize(unsigned char* b, size_t len) +{ + size_t count = 0; + volatile unsigned char *p = b; + + for (count = 0; count < len; count++) + p[count] = 0; +} + +void zeroize_stack() +{ + unsigned char m[ZEROIZE_STACK_SIZE]; + zeroize(m, ZEROIZE_STACK_SIZE); +} diff --git a/Sources/libsignal/curve25519/ed25519/additions/zeroize.h b/Sources/libsignal/curve25519/ed25519/additions/zeroize.h new file mode 100755 index 0000000..0db68bb --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/additions/zeroize.h @@ -0,0 +1,12 @@ +#ifndef __ZEROIZE_H__ +#define __ZEROIZE_H__ + +#include + +#define ZEROIZE_STACK_SIZE 1024 + +void zeroize(unsigned char* b, size_t len); + +void zeroize_stack(); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/base.h b/Sources/libsignal/curve25519/ed25519/base.h new file mode 100755 index 0000000..573bd8a --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/base.h @@ -0,0 +1,1344 @@ +{ + { + { 25967493,-14356035,29566456,3660896,-12694345,4014787,27544626,-11754271,-6079156,2047605 }, + { -12545711,934262,-2722910,3049990,-727428,9406986,12720692,5043384,19500929,-15469378 }, + { -8738181,4489570,9688441,-14785194,10184609,-12363380,29287919,11864899,-24514362,-4438546 }, + }, + { + { -12815894,-12976347,-21581243,11784320,-25355658,-2750717,-11717903,-3814571,-358445,-10211303 }, + { -21703237,6903825,27185491,6451973,-29577724,-9554005,-15616551,11189268,-26829678,-5319081 }, + { 26966642,11152617,32442495,15396054,14353839,-12752335,-3128826,-9541118,-15472047,-4166697 }, + }, + { + { 15636291,-9688557,24204773,-7912398,616977,-16685262,27787600,-14772189,28944400,-1550024 }, + { 16568933,4717097,-11556148,-1102322,15682896,-11807043,16354577,-11775962,7689662,11199574 }, + { 30464156,-5976125,-11779434,-15670865,23220365,15915852,7512774,10017326,-17749093,-9920357 }, + }, + { + { -17036878,13921892,10945806,-6033431,27105052,-16084379,-28926210,15006023,3284568,-6276540 }, + { 23599295,-8306047,-11193664,-7687416,13236774,10506355,7464579,9656445,13059162,10374397 }, + { 7798556,16710257,3033922,2874086,28997861,2835604,32406664,-3839045,-641708,-101325 }, + }, + { + { 10861363,11473154,27284546,1981175,-30064349,12577861,32867885,14515107,-15438304,10819380 }, + { 4708026,6336745,20377586,9066809,-11272109,6594696,-25653668,12483688,-12668491,5581306 }, + { 19563160,16186464,-29386857,4097519,10237984,-4348115,28542350,13850243,-23678021,-15815942 }, + }, + { + { -15371964,-12862754,32573250,4720197,-26436522,5875511,-19188627,-15224819,-9818940,-12085777 }, + { -8549212,109983,15149363,2178705,22900618,4543417,3044240,-15689887,1762328,14866737 }, + { -18199695,-15951423,-10473290,1707278,-17185920,3916101,-28236412,3959421,27914454,4383652 }, + }, + { + { 5153746,9909285,1723747,-2777874,30523605,5516873,19480852,5230134,-23952439,-15175766 }, + { -30269007,-3463509,7665486,10083793,28475525,1649722,20654025,16520125,30598449,7715701 }, + { 28881845,14381568,9657904,3680757,-20181635,7843316,-31400660,1370708,29794553,-1409300 }, + }, + { + { 14499471,-2729599,-33191113,-4254652,28494862,14271267,30290735,10876454,-33154098,2381726 }, + { -7195431,-2655363,-14730155,462251,-27724326,3941372,-6236617,3696005,-32300832,15351955 }, + { 27431194,8222322,16448760,-3907995,-18707002,11938355,-32961401,-2970515,29551813,10109425 }, + }, +}, +{ + { + { -13657040,-13155431,-31283750,11777098,21447386,6519384,-2378284,-1627556,10092783,-4764171 }, + { 27939166,14210322,4677035,16277044,-22964462,-12398139,-32508754,12005538,-17810127,12803510 }, + { 17228999,-15661624,-1233527,300140,-1224870,-11714777,30364213,-9038194,18016357,4397660 }, + }, + { + { -10958843,-7690207,4776341,-14954238,27850028,-15602212,-26619106,14544525,-17477504,982639 }, + { 29253598,15796703,-2863982,-9908884,10057023,3163536,7332899,-4120128,-21047696,9934963 }, + { 5793303,16271923,-24131614,-10116404,29188560,1206517,-14747930,4559895,-30123922,-10897950 }, + }, + { + { -27643952,-11493006,16282657,-11036493,28414021,-15012264,24191034,4541697,-13338309,5500568 }, + { 12650548,-1497113,9052871,11355358,-17680037,-8400164,-17430592,12264343,10874051,13524335 }, + { 25556948,-3045990,714651,2510400,23394682,-10415330,33119038,5080568,-22528059,5376628 }, + }, + { + { -26088264,-4011052,-17013699,-3537628,-6726793,1920897,-22321305,-9447443,4535768,1569007 }, + { -2255422,14606630,-21692440,-8039818,28430649,8775819,-30494562,3044290,31848280,12543772 }, + { -22028579,2943893,-31857513,6777306,13784462,-4292203,-27377195,-2062731,7718482,14474653 }, + }, + { + { 2385315,2454213,-22631320,46603,-4437935,-15680415,656965,-7236665,24316168,-5253567 }, + { 13741529,10911568,-33233417,-8603737,-20177830,-1033297,33040651,-13424532,-20729456,8321686 }, + { 21060490,-2212744,15712757,-4336099,1639040,10656336,23845965,-11874838,-9984458,608372 }, + }, + { + { -13672732,-15087586,-10889693,-7557059,-6036909,11305547,1123968,-6780577,27229399,23887 }, + { -23244140,-294205,-11744728,14712571,-29465699,-2029617,12797024,-6440308,-1633405,16678954 }, + { -29500620,4770662,-16054387,14001338,7830047,9564805,-1508144,-4795045,-17169265,4904953 }, + }, + { + { 24059557,14617003,19037157,-15039908,19766093,-14906429,5169211,16191880,2128236,-4326833 }, + { -16981152,4124966,-8540610,-10653797,30336522,-14105247,-29806336,916033,-6882542,-2986532 }, + { -22630907,12419372,-7134229,-7473371,-16478904,16739175,285431,2763829,15736322,4143876 }, + }, + { + { 2379352,11839345,-4110402,-5988665,11274298,794957,212801,-14594663,23527084,-16458268 }, + { 33431127,-11130478,-17838966,-15626900,8909499,8376530,-32625340,4087881,-15188911,-14416214 }, + { 1767683,7197987,-13205226,-2022635,-13091350,448826,5799055,4357868,-4774191,-16323038 }, + }, +}, +{ + { + { 6721966,13833823,-23523388,-1551314,26354293,-11863321,23365147,-3949732,7390890,2759800 }, + { 4409041,2052381,23373853,10530217,7676779,-12885954,21302353,-4264057,1244380,-12919645 }, + { -4421239,7169619,4982368,-2957590,30256825,-2777540,14086413,9208236,15886429,16489664 }, + }, + { + { 1996075,10375649,14346367,13311202,-6874135,-16438411,-13693198,398369,-30606455,-712933 }, + { -25307465,9795880,-2777414,14878809,-33531835,14780363,13348553,12076947,-30836462,5113182 }, + { -17770784,11797796,31950843,13929123,-25888302,12288344,-30341101,-7336386,13847711,5387222 }, + }, + { + { -18582163,-3416217,17824843,-2340966,22744343,-10442611,8763061,3617786,-19600662,10370991 }, + { 20246567,-14369378,22358229,-543712,18507283,-10413996,14554437,-8746092,32232924,16763880 }, + { 9648505,10094563,26416693,14745928,-30374318,-6472621,11094161,15689506,3140038,-16510092 }, + }, + { + { -16160072,5472695,31895588,4744994,8823515,10365685,-27224800,9448613,-28774454,366295 }, + { 19153450,11523972,-11096490,-6503142,-24647631,5420647,28344573,8041113,719605,11671788 }, + { 8678025,2694440,-6808014,2517372,4964326,11152271,-15432916,-15266516,27000813,-10195553 }, + }, + { + { -15157904,7134312,8639287,-2814877,-7235688,10421742,564065,5336097,6750977,-14521026 }, + { 11836410,-3979488,26297894,16080799,23455045,15735944,1695823,-8819122,8169720,16220347 }, + { -18115838,8653647,17578566,-6092619,-8025777,-16012763,-11144307,-2627664,-5990708,-14166033 }, + }, + { + { -23308498,-10968312,15213228,-10081214,-30853605,-11050004,27884329,2847284,2655861,1738395 }, + { -27537433,-14253021,-25336301,-8002780,-9370762,8129821,21651608,-3239336,-19087449,-11005278 }, + { 1533110,3437855,23735889,459276,29970501,11335377,26030092,5821408,10478196,8544890 }, + }, + { + { 32173121,-16129311,24896207,3921497,22579056,-3410854,19270449,12217473,17789017,-3395995 }, + { -30552961,-2228401,-15578829,-10147201,13243889,517024,15479401,-3853233,30460520,1052596 }, + { -11614875,13323618,32618793,8175907,-15230173,12596687,27491595,-4612359,3179268,-9478891 }, + }, + { + { 31947069,-14366651,-4640583,-15339921,-15125977,-6039709,-14756777,-16411740,19072640,-9511060 }, + { 11685058,11822410,3158003,-13952594,33402194,-4165066,5977896,-5215017,473099,5040608 }, + { -20290863,8198642,-27410132,11602123,1290375,-2799760,28326862,1721092,-19558642,-3131606 }, + }, +}, +{ + { + { 7881532,10687937,7578723,7738378,-18951012,-2553952,21820786,8076149,-27868496,11538389 }, + { -19935666,3899861,18283497,-6801568,-15728660,-11249211,8754525,7446702,-5676054,5797016 }, + { -11295600,-3793569,-15782110,-7964573,12708869,-8456199,2014099,-9050574,-2369172,-5877341 }, + }, + { + { -22472376,-11568741,-27682020,1146375,18956691,16640559,1192730,-3714199,15123619,10811505 }, + { 14352098,-3419715,-18942044,10822655,32750596,4699007,-70363,15776356,-28886779,-11974553 }, + { -28241164,-8072475,-4978962,-5315317,29416931,1847569,-20654173,-16484855,4714547,-9600655 }, + }, + { + { 15200332,8368572,19679101,15970074,-31872674,1959451,24611599,-4543832,-11745876,12340220 }, + { 12876937,-10480056,33134381,6590940,-6307776,14872440,9613953,8241152,15370987,9608631 }, + { -4143277,-12014408,8446281,-391603,4407738,13629032,-7724868,15866074,-28210621,-8814099 }, + }, + { + { 26660628,-15677655,8393734,358047,-7401291,992988,-23904233,858697,20571223,8420556 }, + { 14620715,13067227,-15447274,8264467,14106269,15080814,33531827,12516406,-21574435,-12476749 }, + { 236881,10476226,57258,-14677024,6472998,2466984,17258519,7256740,8791136,15069930 }, + }, + { + { 1276410,-9371918,22949635,-16322807,-23493039,-5702186,14711875,4874229,-30663140,-2331391 }, + { 5855666,4990204,-13711848,7294284,-7804282,1924647,-1423175,-7912378,-33069337,9234253 }, + { 20590503,-9018988,31529744,-7352666,-2706834,10650548,31559055,-11609587,18979186,13396066 }, + }, + { + { 24474287,4968103,22267082,4407354,24063882,-8325180,-18816887,13594782,33514650,7021958 }, + { -11566906,-6565505,-21365085,15928892,-26158305,4315421,-25948728,-3916677,-21480480,12868082 }, + { -28635013,13504661,19988037,-2132761,21078225,6443208,-21446107,2244500,-12455797,-8089383 }, + }, + { + { -30595528,13793479,-5852820,319136,-25723172,-6263899,33086546,8957937,-15233648,5540521 }, + { -11630176,-11503902,-8119500,-7643073,2620056,1022908,-23710744,-1568984,-16128528,-14962807 }, + { 23152971,775386,27395463,14006635,-9701118,4649512,1689819,892185,-11513277,-15205948 }, + }, + { + { 9770129,9586738,26496094,4324120,1556511,-3550024,27453819,4763127,-19179614,5867134 }, + { -32765025,1927590,31726409,-4753295,23962434,-16019500,27846559,5931263,-29749703,-16108455 }, + { 27461885,-2977536,22380810,1815854,-23033753,-3031938,7283490,-15148073,-19526700,7734629 }, + }, +}, +{ + { + { -8010264,-9590817,-11120403,6196038,29344158,-13430885,7585295,-3176626,18549497,15302069 }, + { -32658337,-6171222,-7672793,-11051681,6258878,13504381,10458790,-6418461,-8872242,8424746 }, + { 24687205,8613276,-30667046,-3233545,1863892,-1830544,19206234,7134917,-11284482,-828919 }, + }, + { + { 11334899,-9218022,8025293,12707519,17523892,-10476071,10243738,-14685461,-5066034,16498837 }, + { 8911542,6887158,-9584260,-6958590,11145641,-9543680,17303925,-14124238,6536641,10543906 }, + { -28946384,15479763,-17466835,568876,-1497683,11223454,-2669190,-16625574,-27235709,8876771 }, + }, + { + { -25742899,-12566864,-15649966,-846607,-33026686,-796288,-33481822,15824474,-604426,-9039817 }, + { 10330056,70051,7957388,-9002667,9764902,15609756,27698697,-4890037,1657394,3084098 }, + { 10477963,-7470260,12119566,-13250805,29016247,-5365589,31280319,14396151,-30233575,15272409 }, + }, + { + { -12288309,3169463,28813183,16658753,25116432,-5630466,-25173957,-12636138,-25014757,1950504 }, + { -26180358,9489187,11053416,-14746161,-31053720,5825630,-8384306,-8767532,15341279,8373727 }, + { 28685821,7759505,-14378516,-12002860,-31971820,4079242,298136,-10232602,-2878207,15190420 }, + }, + { + { -32932876,13806336,-14337485,-15794431,-24004620,10940928,8669718,2742393,-26033313,-6875003 }, + { -1580388,-11729417,-25979658,-11445023,-17411874,-10912854,9291594,-16247779,-12154742,6048605 }, + { -30305315,14843444,1539301,11864366,20201677,1900163,13934231,5128323,11213262,9168384 }, + }, + { + { -26280513,11007847,19408960,-940758,-18592965,-4328580,-5088060,-11105150,20470157,-16398701 }, + { -23136053,9282192,14855179,-15390078,-7362815,-14408560,-22783952,14461608,14042978,5230683 }, + { 29969567,-2741594,-16711867,-8552442,9175486,-2468974,21556951,3506042,-5933891,-12449708 }, + }, + { + { -3144746,8744661,19704003,4581278,-20430686,6830683,-21284170,8971513,-28539189,15326563 }, + { -19464629,10110288,-17262528,-3503892,-23500387,1355669,-15523050,15300988,-20514118,9168260 }, + { -5353335,4488613,-23803248,16314347,7780487,-15638939,-28948358,9601605,33087103,-9011387 }, + }, + { + { -19443170,-15512900,-20797467,-12445323,-29824447,10229461,-27444329,-15000531,-5996870,15664672 }, + { 23294591,-16632613,-22650781,-8470978,27844204,11461195,13099750,-2460356,18151676,13417686 }, + { -24722913,-4176517,-31150679,5988919,-26858785,6685065,1661597,-12551441,15271676,-15452665 }, + }, +}, +{ + { + { 11433042,-13228665,8239631,-5279517,-1985436,-725718,-18698764,2167544,-6921301,-13440182 }, + { -31436171,15575146,30436815,12192228,-22463353,9395379,-9917708,-8638997,12215110,12028277 }, + { 14098400,6555944,23007258,5757252,-15427832,-12950502,30123440,4617780,-16900089,-655628 }, + }, + { + { -4026201,-15240835,11893168,13718664,-14809462,1847385,-15819999,10154009,23973261,-12684474 }, + { -26531820,-3695990,-1908898,2534301,-31870557,-16550355,18341390,-11419951,32013174,-10103539 }, + { -25479301,10876443,-11771086,-14625140,-12369567,1838104,21911214,6354752,4425632,-837822 }, + }, + { + { -10433389,-14612966,22229858,-3091047,-13191166,776729,-17415375,-12020462,4725005,14044970 }, + { 19268650,-7304421,1555349,8692754,-21474059,-9910664,6347390,-1411784,-19522291,-16109756 }, + { -24864089,12986008,-10898878,-5558584,-11312371,-148526,19541418,8180106,9282262,10282508 }, + }, + { + { -26205082,4428547,-8661196,-13194263,4098402,-14165257,15522535,8372215,5542595,-10702683 }, + { -10562541,14895633,26814552,-16673850,-17480754,-2489360,-2781891,6993761,-18093885,10114655 }, + { -20107055,-929418,31422704,10427861,-7110749,6150669,-29091755,-11529146,25953725,-106158 }, + }, + { + { -4234397,-8039292,-9119125,3046000,2101609,-12607294,19390020,6094296,-3315279,12831125 }, + { -15998678,7578152,5310217,14408357,-33548620,-224739,31575954,6326196,7381791,-2421839 }, + { -20902779,3296811,24736065,-16328389,18374254,7318640,6295303,8082724,-15362489,12339664 }, + }, + { + { 27724736,2291157,6088201,-14184798,1792727,5857634,13848414,15768922,25091167,14856294 }, + { -18866652,8331043,24373479,8541013,-701998,-9269457,12927300,-12695493,-22182473,-9012899 }, + { -11423429,-5421590,11632845,3405020,30536730,-11674039,-27260765,13866390,30146206,9142070 }, + }, + { + { 3924129,-15307516,-13817122,-10054960,12291820,-668366,-27702774,9326384,-8237858,4171294 }, + { -15921940,16037937,6713787,16606682,-21612135,2790944,26396185,3731949,345228,-5462949 }, + { -21327538,13448259,25284571,1143661,20614966,-8849387,2031539,-12391231,-16253183,-13582083 }, + }, + { + { 31016211,-16722429,26371392,-14451233,-5027349,14854137,17477601,3842657,28012650,-16405420 }, + { -5075835,9368966,-8562079,-4600902,-15249953,6970560,-9189873,16292057,-8867157,3507940 }, + { 29439664,3537914,23333589,6997794,-17555561,-11018068,-15209202,-15051267,-9164929,6580396 }, + }, +}, +{ + { + { -12185861,-7679788,16438269,10826160,-8696817,-6235611,17860444,-9273846,-2095802,9304567 }, + { 20714564,-4336911,29088195,7406487,11426967,-5095705,14792667,-14608617,5289421,-477127 }, + { -16665533,-10650790,-6160345,-13305760,9192020,-1802462,17271490,12349094,26939669,-3752294 }, + }, + { + { -12889898,9373458,31595848,16374215,21471720,13221525,-27283495,-12348559,-3698806,117887 }, + { 22263325,-6560050,3984570,-11174646,-15114008,-566785,28311253,5358056,-23319780,541964 }, + { 16259219,3261970,2309254,-15534474,-16885711,-4581916,24134070,-16705829,-13337066,-13552195 }, + }, + { + { 9378160,-13140186,-22845982,-12745264,28198281,-7244098,-2399684,-717351,690426,14876244 }, + { 24977353,-314384,-8223969,-13465086,28432343,-1176353,-13068804,-12297348,-22380984,6618999 }, + { -1538174,11685646,12944378,13682314,-24389511,-14413193,8044829,-13817328,32239829,-5652762 }, + }, + { + { -18603066,4762990,-926250,8885304,-28412480,-3187315,9781647,-10350059,32779359,5095274 }, + { -33008130,-5214506,-32264887,-3685216,9460461,-9327423,-24601656,14506724,21639561,-2630236 }, + { -16400943,-13112215,25239338,15531969,3987758,-4499318,-1289502,-6863535,17874574,558605 }, + }, + { + { -13600129,10240081,9171883,16131053,-20869254,9599700,33499487,5080151,2085892,5119761 }, + { -22205145,-2519528,-16381601,414691,-25019550,2170430,30634760,-8363614,-31999993,-5759884 }, + { -6845704,15791202,8550074,-1312654,29928809,-12092256,27534430,-7192145,-22351378,12961482 }, + }, + { + { -24492060,-9570771,10368194,11582341,-23397293,-2245287,16533930,8206996,-30194652,-5159638 }, + { -11121496,-3382234,2307366,6362031,-135455,8868177,-16835630,7031275,7589640,8945490 }, + { -32152748,8917967,6661220,-11677616,-1192060,-15793393,7251489,-11182180,24099109,-14456170 }, + }, + { + { 5019558,-7907470,4244127,-14714356,-26933272,6453165,-19118182,-13289025,-6231896,-10280736 }, + { 10853594,10721687,26480089,5861829,-22995819,1972175,-1866647,-10557898,-3363451,-6441124 }, + { -17002408,5906790,221599,-6563147,7828208,-13248918,24362661,-2008168,-13866408,7421392 }, + }, + { + { 8139927,-6546497,32257646,-5890546,30375719,1886181,-21175108,15441252,28826358,-4123029 }, + { 6267086,9695052,7709135,-16603597,-32869068,-1886135,14795160,-7840124,13746021,-1742048 }, + { 28584902,7787108,-6732942,-15050729,22846041,-7571236,-3181936,-363524,4771362,-8419958 }, + }, +}, +{ + { + { 24949256,6376279,-27466481,-8174608,-18646154,-9930606,33543569,-12141695,3569627,11342593 }, + { 26514989,4740088,27912651,3697550,19331575,-11472339,6809886,4608608,7325975,-14801071 }, + { -11618399,-14554430,-24321212,7655128,-1369274,5214312,-27400540,10258390,-17646694,-8186692 }, + }, + { + { 11431204,15823007,26570245,14329124,18029990,4796082,-31446179,15580664,9280358,-3973687 }, + { -160783,-10326257,-22855316,-4304997,-20861367,-13621002,-32810901,-11181622,-15545091,4387441 }, + { -20799378,12194512,3937617,-5805892,-27154820,9340370,-24513992,8548137,20617071,-7482001 }, + }, + { + { -938825,-3930586,-8714311,16124718,24603125,-6225393,-13775352,-11875822,24345683,10325460 }, + { -19855277,-1568885,-22202708,8714034,14007766,6928528,16318175,-1010689,4766743,3552007 }, + { -21751364,-16730916,1351763,-803421,-4009670,3950935,3217514,14481909,10988822,-3994762 }, + }, + { + { 15564307,-14311570,3101243,5684148,30446780,-8051356,12677127,-6505343,-8295852,13296005 }, + { -9442290,6624296,-30298964,-11913677,-4670981,-2057379,31521204,9614054,-30000824,12074674 }, + { 4771191,-135239,14290749,-13089852,27992298,14998318,-1413936,-1556716,29832613,-16391035 }, + }, + { + { 7064884,-7541174,-19161962,-5067537,-18891269,-2912736,25825242,5293297,-27122660,13101590 }, + { -2298563,2439670,-7466610,1719965,-27267541,-16328445,32512469,-5317593,-30356070,-4190957 }, + { -30006540,10162316,-33180176,3981723,-16482138,-13070044,14413974,9515896,19568978,9628812 }, + }, + { + { 33053803,199357,15894591,1583059,27380243,-4580435,-17838894,-6106839,-6291786,3437740 }, + { -18978877,3884493,19469877,12726490,15913552,13614290,-22961733,70104,7463304,4176122 }, + { -27124001,10659917,11482427,-16070381,12771467,-6635117,-32719404,-5322751,24216882,5944158 }, + }, + { + { 8894125,7450974,-2664149,-9765752,-28080517,-12389115,19345746,14680796,11632993,5847885 }, + { 26942781,-2315317,9129564,-4906607,26024105,11769399,-11518837,6367194,-9727230,4782140 }, + { 19916461,-4828410,-22910704,-11414391,25606324,-5972441,33253853,8220911,6358847,-1873857 }, + }, + { + { 801428,-2081702,16569428,11065167,29875704,96627,7908388,-4480480,-13538503,1387155 }, + { 19646058,5720633,-11416706,12814209,11607948,12749789,14147075,15156355,-21866831,11835260 }, + { 19299512,1155910,28703737,14890794,2925026,7269399,26121523,15467869,-26560550,5052483 }, + }, +}, +{ + { + { -3017432,10058206,1980837,3964243,22160966,12322533,-6431123,-12618185,12228557,-7003677 }, + { 32944382,14922211,-22844894,5188528,21913450,-8719943,4001465,13238564,-6114803,8653815 }, + { 22865569,-4652735,27603668,-12545395,14348958,8234005,24808405,5719875,28483275,2841751 }, + }, + { + { -16420968,-1113305,-327719,-12107856,21886282,-15552774,-1887966,-315658,19932058,-12739203 }, + { -11656086,10087521,-8864888,-5536143,-19278573,-3055912,3999228,13239134,-4777469,-13910208 }, + { 1382174,-11694719,17266790,9194690,-13324356,9720081,20403944,11284705,-14013818,3093230 }, + }, + { + { 16650921,-11037932,-1064178,1570629,-8329746,7352753,-302424,16271225,-24049421,-6691850 }, + { -21911077,-5927941,-4611316,-5560156,-31744103,-10785293,24123614,15193618,-21652117,-16739389 }, + { -9935934,-4289447,-25279823,4372842,2087473,10399484,31870908,14690798,17361620,11864968 }, + }, + { + { -11307610,6210372,13206574,5806320,-29017692,-13967200,-12331205,-7486601,-25578460,-16240689 }, + { 14668462,-12270235,26039039,15305210,25515617,4542480,10453892,6577524,9145645,-6443880 }, + { 5974874,3053895,-9433049,-10385191,-31865124,3225009,-7972642,3936128,-5652273,-3050304 }, + }, + { + { 30625386,-4729400,-25555961,-12792866,-20484575,7695099,17097188,-16303496,-27999779,1803632 }, + { -3553091,9865099,-5228566,4272701,-5673832,-16689700,14911344,12196514,-21405489,7047412 }, + { 20093277,9920966,-11138194,-5343857,13161587,12044805,-32856851,4124601,-32343828,-10257566 }, + }, + { + { -20788824,14084654,-13531713,7842147,19119038,-13822605,4752377,-8714640,-21679658,2288038 }, + { -26819236,-3283715,29965059,3039786,-14473765,2540457,29457502,14625692,-24819617,12570232 }, + { -1063558,-11551823,16920318,12494842,1278292,-5869109,-21159943,-3498680,-11974704,4724943 }, + }, + { + { 17960970,-11775534,-4140968,-9702530,-8876562,-1410617,-12907383,-8659932,-29576300,1903856 }, + { 23134274,-14279132,-10681997,-1611936,20684485,15770816,-12989750,3190296,26955097,14109738 }, + { 15308788,5320727,-30113809,-14318877,22902008,7767164,29425325,-11277562,31960942,11934971 }, + }, + { + { -27395711,8435796,4109644,12222639,-24627868,14818669,20638173,4875028,10491392,1379718 }, + { -13159415,9197841,3875503,-8936108,-1383712,-5879801,33518459,16176658,21432314,12180697 }, + { -11787308,11500838,13787581,-13832590,-22430679,10140205,1465425,12689540,-10301319,-13872883 }, + }, +}, +{ + { + { 5414091,-15386041,-21007664,9643570,12834970,1186149,-2622916,-1342231,26128231,6032912 }, + { -26337395,-13766162,32496025,-13653919,17847801,-12669156,3604025,8316894,-25875034,-10437358 }, + { 3296484,6223048,24680646,-12246460,-23052020,5903205,-8862297,-4639164,12376617,3188849 }, + }, + { + { 29190488,-14659046,27549113,-1183516,3520066,-10697301,32049515,-7309113,-16109234,-9852307 }, + { -14744486,-9309156,735818,-598978,-20407687,-5057904,25246078,-15795669,18640741,-960977 }, + { -6928835,-16430795,10361374,5642961,4910474,12345252,-31638386,-494430,10530747,1053335 }, + }, + { + { -29265967,-14186805,-13538216,-12117373,-19457059,-10655384,-31462369,-2948985,24018831,15026644 }, + { -22592535,-3145277,-2289276,5953843,-13440189,9425631,25310643,13003497,-2314791,-15145616 }, + { -27419985,-603321,-8043984,-1669117,-26092265,13987819,-27297622,187899,-23166419,-2531735 }, + }, + { + { -21744398,-13810475,1844840,5021428,-10434399,-15911473,9716667,16266922,-5070217,726099 }, + { 29370922,-6053998,7334071,-15342259,9385287,2247707,-13661962,-4839461,30007388,-15823341 }, + { -936379,16086691,23751945,-543318,-1167538,-5189036,9137109,730663,9835848,4555336 }, + }, + { + { -23376435,1410446,-22253753,-12899614,30867635,15826977,17693930,544696,-11985298,12422646 }, + { 31117226,-12215734,-13502838,6561947,-9876867,-12757670,-5118685,-4096706,29120153,13924425 }, + { -17400879,-14233209,19675799,-2734756,-11006962,-5858820,-9383939,-11317700,7240931,-237388 }, + }, + { + { -31361739,-11346780,-15007447,-5856218,-22453340,-12152771,1222336,4389483,3293637,-15551743 }, + { -16684801,-14444245,11038544,11054958,-13801175,-3338533,-24319580,7733547,12796905,-6335822 }, + { -8759414,-10817836,-25418864,10783769,-30615557,-9746811,-28253339,3647836,3222231,-11160462 }, + }, + { + { 18606113,1693100,-25448386,-15170272,4112353,10045021,23603893,-2048234,-7550776,2484985 }, + { 9255317,-3131197,-12156162,-1004256,13098013,-9214866,16377220,-2102812,-19802075,-3034702 }, + { -22729289,7496160,-5742199,11329249,19991973,-3347502,-31718148,9936966,-30097688,-10618797 }, + }, + { + { 21878590,-5001297,4338336,13643897,-3036865,13160960,19708896,5415497,-7360503,-4109293 }, + { 27736861,10103576,12500508,8502413,-3413016,-9633558,10436918,-1550276,-23659143,-8132100 }, + { 19492550,-12104365,-29681976,-852630,-3208171,12403437,30066266,8367329,13243957,8709688 }, + }, +}, +{ + { + { 12015105,2801261,28198131,10151021,24818120,-4743133,-11194191,-5645734,5150968,7274186 }, + { 2831366,-12492146,1478975,6122054,23825128,-12733586,31097299,6083058,31021603,-9793610 }, + { -2529932,-2229646,445613,10720828,-13849527,-11505937,-23507731,16354465,15067285,-14147707 }, + }, + { + { 7840942,14037873,-33364863,15934016,-728213,-3642706,21403988,1057586,-19379462,-12403220 }, + { 915865,-16469274,15608285,-8789130,-24357026,6060030,-17371319,8410997,-7220461,16527025 }, + { 32922597,-556987,20336074,-16184568,10903705,-5384487,16957574,52992,23834301,6588044 }, + }, + { + { 32752030,11232950,3381995,-8714866,22652988,-10744103,17159699,16689107,-20314580,-1305992 }, + { -4689649,9166776,-25710296,-10847306,11576752,12733943,7924251,-2752281,1976123,-7249027 }, + { 21251222,16309901,-2983015,-6783122,30810597,12967303,156041,-3371252,12331345,-8237197 }, + }, + { + { 8651614,-4477032,-16085636,-4996994,13002507,2950805,29054427,-5106970,10008136,-4667901 }, + { 31486080,15114593,-14261250,12951354,14369431,-7387845,16347321,-13662089,8684155,-10532952 }, + { 19443825,11385320,24468943,-9659068,-23919258,2187569,-26263207,-6086921,31316348,14219878 }, + }, + { + { -28594490,1193785,32245219,11392485,31092169,15722801,27146014,6992409,29126555,9207390 }, + { 32382935,1110093,18477781,11028262,-27411763,-7548111,-4980517,10843782,-7957600,-14435730 }, + { 2814918,7836403,27519878,-7868156,-20894015,-11553689,-21494559,8550130,28346258,1994730 }, + }, + { + { -19578299,8085545,-14000519,-3948622,2785838,-16231307,-19516951,7174894,22628102,8115180 }, + { -30405132,955511,-11133838,-15078069,-32447087,-13278079,-25651578,3317160,-9943017,930272 }, + { -15303681,-6833769,28856490,1357446,23421993,1057177,24091212,-1388970,-22765376,-10650715 }, + }, + { + { -22751231,-5303997,-12907607,-12768866,-15811511,-7797053,-14839018,-16554220,-1867018,8398970 }, + { -31969310,2106403,-4736360,1362501,12813763,16200670,22981545,-6291273,18009408,-15772772 }, + { -17220923,-9545221,-27784654,14166835,29815394,7444469,29551787,-3727419,19288549,1325865 }, + }, + { + { 15100157,-15835752,-23923978,-1005098,-26450192,15509408,12376730,-3479146,33166107,-8042750 }, + { 20909231,13023121,-9209752,16251778,-5778415,-8094914,12412151,10018715,2213263,-13878373 }, + { 32529814,-11074689,30361439,-16689753,-9135940,1513226,22922121,6382134,-5766928,8371348 }, + }, +}, +{ + { + { 9923462,11271500,12616794,3544722,-29998368,-1721626,12891687,-8193132,-26442943,10486144 }, + { -22597207,-7012665,8587003,-8257861,4084309,-12970062,361726,2610596,-23921530,-11455195 }, + { 5408411,-1136691,-4969122,10561668,24145918,14240566,31319731,-4235541,19985175,-3436086 }, + }, + { + { -13994457,16616821,14549246,3341099,32155958,13648976,-17577068,8849297,65030,8370684 }, + { -8320926,-12049626,31204563,5839400,-20627288,-1057277,-19442942,6922164,12743482,-9800518 }, + { -2361371,12678785,28815050,4759974,-23893047,4884717,23783145,11038569,18800704,255233 }, + }, + { + { -5269658,-1773886,13957886,7990715,23132995,728773,13393847,9066957,19258688,-14753793 }, + { -2936654,-10827535,-10432089,14516793,-3640786,4372541,-31934921,2209390,-1524053,2055794 }, + { 580882,16705327,5468415,-2683018,-30926419,-14696000,-7203346,-8994389,-30021019,7394435 }, + }, + { + { 23838809,1822728,-15738443,15242727,8318092,-3733104,-21672180,-3492205,-4821741,14799921 }, + { 13345610,9759151,3371034,-16137791,16353039,8577942,31129804,13496856,-9056018,7402518 }, + { 2286874,-4435931,-20042458,-2008336,-13696227,5038122,11006906,-15760352,8205061,1607563 }, + }, + { + { 14414086,-8002132,3331830,-3208217,22249151,-5594188,18364661,-2906958,30019587,-9029278 }, + { -27688051,1585953,-10775053,931069,-29120221,-11002319,-14410829,12029093,9944378,8024 }, + { 4368715,-3709630,29874200,-15022983,-20230386,-11410704,-16114594,-999085,-8142388,5640030 }, + }, + { + { 10299610,13746483,11661824,16234854,7630238,5998374,9809887,-16694564,15219798,-14327783 }, + { 27425505,-5719081,3055006,10660664,23458024,595578,-15398605,-1173195,-18342183,9742717 }, + { 6744077,2427284,26042789,2720740,-847906,1118974,32324614,7406442,12420155,1994844 }, + }, + { + { 14012521,-5024720,-18384453,-9578469,-26485342,-3936439,-13033478,-10909803,24319929,-6446333 }, + { 16412690,-4507367,10772641,15929391,-17068788,-4658621,10555945,-10484049,-30102368,-4739048 }, + { 22397382,-7767684,-9293161,-12792868,17166287,-9755136,-27333065,6199366,21880021,-12250760 }, + }, + { + { -4283307,5368523,-31117018,8163389,-30323063,3209128,16557151,8890729,8840445,4957760 }, + { -15447727,709327,-6919446,-10870178,-29777922,6522332,-21720181,12130072,-14796503,5005757 }, + { -2114751,-14308128,23019042,15765735,-25269683,6002752,10183197,-13239326,-16395286,-2176112 }, + }, +}, +{ + { + { -19025756,1632005,13466291,-7995100,-23640451,16573537,-32013908,-3057104,22208662,2000468 }, + { 3065073,-1412761,-25598674,-361432,-17683065,-5703415,-8164212,11248527,-3691214,-7414184 }, + { 10379208,-6045554,8877319,1473647,-29291284,-12507580,16690915,2553332,-3132688,16400289 }, + }, + { + { 15716668,1254266,-18472690,7446274,-8448918,6344164,-22097271,-7285580,26894937,9132066 }, + { 24158887,12938817,11085297,-8177598,-28063478,-4457083,-30576463,64452,-6817084,-2692882 }, + { 13488534,7794716,22236231,5989356,25426474,-12578208,2350710,-3418511,-4688006,2364226 }, + }, + { + { 16335052,9132434,25640582,6678888,1725628,8517937,-11807024,-11697457,15445875,-7798101 }, + { 29004207,-7867081,28661402,-640412,-12794003,-7943086,31863255,-4135540,-278050,-15759279 }, + { -6122061,-14866665,-28614905,14569919,-10857999,-3591829,10343412,-6976290,-29828287,-10815811 }, + }, + { + { 27081650,3463984,14099042,-4517604,1616303,-6205604,29542636,15372179,17293797,960709 }, + { 20263915,11434237,-5765435,11236810,13505955,-10857102,-16111345,6493122,-19384511,7639714 }, + { -2830798,-14839232,25403038,-8215196,-8317012,-16173699,18006287,-16043750,29994677,-15808121 }, + }, + { + { 9769828,5202651,-24157398,-13631392,-28051003,-11561624,-24613141,-13860782,-31184575,709464 }, + { 12286395,13076066,-21775189,-1176622,-25003198,4057652,-32018128,-8890874,16102007,13205847 }, + { 13733362,5599946,10557076,3195751,-5557991,8536970,-25540170,8525972,10151379,10394400 }, + }, + { + { 4024660,-16137551,22436262,12276534,-9099015,-2686099,19698229,11743039,-33302334,8934414 }, + { -15879800,-4525240,-8580747,-2934061,14634845,-698278,-9449077,3137094,-11536886,11721158 }, + { 17555939,-5013938,8268606,2331751,-22738815,9761013,9319229,8835153,-9205489,-1280045 }, + }, + { + { -461409,-7830014,20614118,16688288,-7514766,-4807119,22300304,505429,6108462,-6183415 }, + { -5070281,12367917,-30663534,3234473,32617080,-8422642,29880583,-13483331,-26898490,-7867459 }, + { -31975283,5726539,26934134,10237677,-3173717,-605053,24199304,3795095,7592688,-14992079 }, + }, + { + { 21594432,-14964228,17466408,-4077222,32537084,2739898,6407723,12018833,-28256052,4298412 }, + { -20650503,-11961496,-27236275,570498,3767144,-1717540,13891942,-1569194,13717174,10805743 }, + { -14676630,-15644296,15287174,11927123,24177847,-8175568,-796431,14860609,-26938930,-5863836 }, + }, +}, +{ + { + { 12962541,5311799,-10060768,11658280,18855286,-7954201,13286263,-12808704,-4381056,9882022 }, + { 18512079,11319350,-20123124,15090309,18818594,5271736,-22727904,3666879,-23967430,-3299429 }, + { -6789020,-3146043,16192429,13241070,15898607,-14206114,-10084880,-6661110,-2403099,5276065 }, + }, + { + { 30169808,-5317648,26306206,-11750859,27814964,7069267,7152851,3684982,1449224,13082861 }, + { 10342826,3098505,2119311,193222,25702612,12233820,23697382,15056736,-21016438,-8202000 }, + { -33150110,3261608,22745853,7948688,19370557,-15177665,-26171976,6482814,-10300080,-11060101 }, + }, + { + { 32869458,-5408545,25609743,15678670,-10687769,-15471071,26112421,2521008,-22664288,6904815 }, + { 29506923,4457497,3377935,-9796444,-30510046,12935080,1561737,3841096,-29003639,-6657642 }, + { 10340844,-6630377,-18656632,-2278430,12621151,-13339055,30878497,-11824370,-25584551,5181966 }, + }, + { + { 25940115,-12658025,17324188,-10307374,-8671468,15029094,24396252,-16450922,-2322852,-12388574 }, + { -21765684,9916823,-1300409,4079498,-1028346,11909559,1782390,12641087,20603771,-6561742 }, + { -18882287,-11673380,24849422,11501709,13161720,-4768874,1925523,11914390,4662781,7820689 }, + }, + { + { 12241050,-425982,8132691,9393934,32846760,-1599620,29749456,12172924,16136752,15264020 }, + { -10349955,-14680563,-8211979,2330220,-17662549,-14545780,10658213,6671822,19012087,3772772 }, + { 3753511,-3421066,10617074,2028709,14841030,-6721664,28718732,-15762884,20527771,12988982 }, + }, + { + { -14822485,-5797269,-3707987,12689773,-898983,-10914866,-24183046,-10564943,3299665,-12424953 }, + { -16777703,-15253301,-9642417,4978983,3308785,8755439,6943197,6461331,-25583147,8991218 }, + { -17226263,1816362,-1673288,-6086439,31783888,-8175991,-32948145,7417950,-30242287,1507265 }, + }, + { + { 29692663,6829891,-10498800,4334896,20945975,-11906496,-28887608,8209391,14606362,-10647073 }, + { -3481570,8707081,32188102,5672294,22096700,1711240,-33020695,9761487,4170404,-2085325 }, + { -11587470,14855945,-4127778,-1531857,-26649089,15084046,22186522,16002000,-14276837,-8400798 }, + }, + { + { -4811456,13761029,-31703877,-2483919,-3312471,7869047,-7113572,-9620092,13240845,10965870 }, + { -7742563,-8256762,-14768334,-13656260,-23232383,12387166,4498947,14147411,29514390,4302863 }, + { -13413405,-12407859,20757302,-13801832,14785143,8976368,-5061276,-2144373,17846988,-13971927 }, + }, +}, +{ + { + { -2244452,-754728,-4597030,-1066309,-6247172,1455299,-21647728,-9214789,-5222701,12650267 }, + { -9906797,-16070310,21134160,12198166,-27064575,708126,387813,13770293,-19134326,10958663 }, + { 22470984,12369526,23446014,-5441109,-21520802,-9698723,-11772496,-11574455,-25083830,4271862 }, + }, + { + { -25169565,-10053642,-19909332,15361595,-5984358,2159192,75375,-4278529,-32526221,8469673 }, + { 15854970,4148314,-8893890,7259002,11666551,13824734,-30531198,2697372,24154791,-9460943 }, + { 15446137,-15806644,29759747,14019369,30811221,-9610191,-31582008,12840104,24913809,9815020 }, + }, + { + { -4709286,-5614269,-31841498,-12288893,-14443537,10799414,-9103676,13438769,18735128,9466238 }, + { 11933045,9281483,5081055,-5183824,-2628162,-4905629,-7727821,-10896103,-22728655,16199064 }, + { 14576810,379472,-26786533,-8317236,-29426508,-10812974,-102766,1876699,30801119,2164795 }, + }, + { + { 15995086,3199873,13672555,13712240,-19378835,-4647646,-13081610,-15496269,-13492807,1268052 }, + { -10290614,-3659039,-3286592,10948818,23037027,3794475,-3470338,-12600221,-17055369,3565904 }, + { 29210088,-9419337,-5919792,-4952785,10834811,-13327726,-16512102,-10820713,-27162222,-14030531 }, + }, + { + { -13161890,15508588,16663704,-8156150,-28349942,9019123,-29183421,-3769423,2244111,-14001979 }, + { -5152875,-3800936,-9306475,-6071583,16243069,14684434,-25673088,-16180800,13491506,4641841 }, + { 10813417,643330,-19188515,-728916,30292062,-16600078,27548447,-7721242,14476989,-12767431 }, + }, + { + { 10292079,9984945,6481436,8279905,-7251514,7032743,27282937,-1644259,-27912810,12651324 }, + { -31185513,-813383,22271204,11835308,10201545,15351028,17099662,3988035,21721536,-3148940 }, + { 10202177,-6545839,-31373232,-9574638,-32150642,-8119683,-12906320,3852694,13216206,14842320 }, + }, + { + { -15815640,-10601066,-6538952,-7258995,-6984659,-6581778,-31500847,13765824,-27434397,9900184 }, + { 14465505,-13833331,-32133984,-14738873,-27443187,12990492,33046193,15796406,-7051866,-8040114 }, + { 30924417,-8279620,6359016,-12816335,16508377,9071735,-25488601,15413635,9524356,-7018878 }, + }, + { + { 12274201,-13175547,32627641,-1785326,6736625,13267305,5237659,-5109483,15663516,4035784 }, + { -2951309,8903985,17349946,601635,-16432815,-4612556,-13732739,-15889334,-22258478,4659091 }, + { -16916263,-4952973,-30393711,-15158821,20774812,15897498,5736189,15026997,-2178256,-13455585 }, + }, +}, +{ + { + { -8858980,-2219056,28571666,-10155518,-474467,-10105698,-3801496,278095,23440562,-290208 }, + { 10226241,-5928702,15139956,120818,-14867693,5218603,32937275,11551483,-16571960,-7442864 }, + { 17932739,-12437276,-24039557,10749060,11316803,7535897,22503767,5561594,-3646624,3898661 }, + }, + { + { 7749907,-969567,-16339731,-16464,-25018111,15122143,-1573531,7152530,21831162,1245233 }, + { 26958459,-14658026,4314586,8346991,-5677764,11960072,-32589295,-620035,-30402091,-16716212 }, + { -12165896,9166947,33491384,13673479,29787085,13096535,6280834,14587357,-22338025,13987525 }, + }, + { + { -24349909,7778775,21116000,15572597,-4833266,-5357778,-4300898,-5124639,-7469781,-2858068 }, + { 9681908,-6737123,-31951644,13591838,-6883821,386950,31622781,6439245,-14581012,4091397 }, + { -8426427,1470727,-28109679,-1596990,3978627,-5123623,-19622683,12092163,29077877,-14741988 }, + }, + { + { 5269168,-6859726,-13230211,-8020715,25932563,1763552,-5606110,-5505881,-20017847,2357889 }, + { 32264008,-15407652,-5387735,-1160093,-2091322,-3946900,23104804,-12869908,5727338,189038 }, + { 14609123,-8954470,-6000566,-16622781,-14577387,-7743898,-26745169,10942115,-25888931,-14884697 }, + }, + { + { 20513500,5557931,-15604613,7829531,26413943,-2019404,-21378968,7471781,13913677,-5137875 }, + { -25574376,11967826,29233242,12948236,-6754465,4713227,-8940970,14059180,12878652,8511905 }, + { -25656801,3393631,-2955415,-7075526,-2250709,9366908,-30223418,6812974,5568676,-3127656 }, + }, + { + { 11630004,12144454,2116339,13606037,27378885,15676917,-17408753,-13504373,-14395196,8070818 }, + { 27117696,-10007378,-31282771,-5570088,1127282,12772488,-29845906,10483306,-11552749,-1028714 }, + { 10637467,-5688064,5674781,1072708,-26343588,-6982302,-1683975,9177853,-27493162,15431203 }, + }, + { + { 20525145,10892566,-12742472,12779443,-29493034,16150075,-28240519,14943142,-15056790,-7935931 }, + { -30024462,5626926,-551567,-9981087,753598,11981191,25244767,-3239766,-3356550,9594024 }, + { -23752644,2636870,-5163910,-10103818,585134,7877383,11345683,-6492290,13352335,-10977084 }, + }, + { + { -1931799,-5407458,3304649,-12884869,17015806,-4877091,-29783850,-7752482,-13215537,-319204 }, + { 20239939,6607058,6203985,3483793,-18386976,-779229,-20723742,15077870,-22750759,14523817 }, + { 27406042,-6041657,27423596,-4497394,4996214,10002360,-28842031,-4545494,-30172742,-4805667 }, + }, +}, +{ + { + { 11374242,12660715,17861383,-12540833,10935568,1099227,-13886076,-9091740,-27727044,11358504 }, + { -12730809,10311867,1510375,10778093,-2119455,-9145702,32676003,11149336,-26123651,4985768 }, + { -19096303,341147,-6197485,-239033,15756973,-8796662,-983043,13794114,-19414307,-15621255 }, + }, + { + { 6490081,11940286,25495923,-7726360,8668373,-8751316,3367603,6970005,-1691065,-9004790 }, + { 1656497,13457317,15370807,6364910,13605745,8362338,-19174622,-5475723,-16796596,-5031438 }, + { -22273315,-13524424,-64685,-4334223,-18605636,-10921968,-20571065,-7007978,-99853,-10237333 }, + }, + { + { 17747465,10039260,19368299,-4050591,-20630635,-16041286,31992683,-15857976,-29260363,-5511971 }, + { 31932027,-4986141,-19612382,16366580,22023614,88450,11371999,-3744247,4882242,-10626905 }, + { 29796507,37186,19818052,10115756,-11829032,3352736,18551198,3272828,-5190932,-4162409 }, + }, + { + { 12501286,4044383,-8612957,-13392385,-32430052,5136599,-19230378,-3529697,330070,-3659409 }, + { 6384877,2899513,17807477,7663917,-2358888,12363165,25366522,-8573892,-271295,12071499 }, + { -8365515,-4042521,25133448,-4517355,-6211027,2265927,-32769618,1936675,-5159697,3829363 }, + }, + { + { 28425966,-5835433,-577090,-4697198,-14217555,6870930,7921550,-6567787,26333140,14267664 }, + { -11067219,11871231,27385719,-10559544,-4585914,-11189312,10004786,-8709488,-21761224,8930324 }, + { -21197785,-16396035,25654216,-1725397,12282012,11008919,1541940,4757911,-26491501,-16408940 }, + }, + { + { 13537262,-7759490,-20604840,10961927,-5922820,-13218065,-13156584,6217254,-15943699,13814990 }, + { -17422573,15157790,18705543,29619,24409717,-260476,27361681,9257833,-1956526,-1776914 }, + { -25045300,-10191966,15366585,15166509,-13105086,8423556,-29171540,12361135,-18685978,4578290 }, + }, + { + { 24579768,3711570,1342322,-11180126,-27005135,14124956,-22544529,14074919,21964432,8235257 }, + { -6528613,-2411497,9442966,-5925588,12025640,-1487420,-2981514,-1669206,13006806,2355433 }, + { -16304899,-13605259,-6632427,-5142349,16974359,-10911083,27202044,1719366,1141648,-12796236 }, + }, + { + { -12863944,-13219986,-8318266,-11018091,-6810145,-4843894,13475066,-3133972,32674895,13715045 }, + { 11423335,-5468059,32344216,8962751,24989809,9241752,-13265253,16086212,-28740881,-15642093 }, + { -1409668,12530728,-6368726,10847387,19531186,-14132160,-11709148,7791794,-27245943,4383347 }, + }, +}, +{ + { + { -28970898,5271447,-1266009,-9736989,-12455236,16732599,-4862407,-4906449,27193557,6245191 }, + { -15193956,5362278,-1783893,2695834,4960227,12840725,23061898,3260492,22510453,8577507 }, + { -12632451,11257346,-32692994,13548177,-721004,10879011,31168030,13952092,-29571492,-3635906 }, + }, + { + { 3877321,-9572739,32416692,5405324,-11004407,-13656635,3759769,11935320,5611860,8164018 }, + { -16275802,14667797,15906460,12155291,-22111149,-9039718,32003002,-8832289,5773085,-8422109 }, + { -23788118,-8254300,1950875,8937633,18686727,16459170,-905725,12376320,31632953,190926 }, + }, + { + { -24593607,-16138885,-8423991,13378746,14162407,6901328,-8288749,4508564,-25341555,-3627528 }, + { 8884438,-5884009,6023974,10104341,-6881569,-4941533,18722941,-14786005,-1672488,827625 }, + { -32720583,-16289296,-32503547,7101210,13354605,2659080,-1800575,-14108036,-24878478,1541286 }, + }, + { + { 2901347,-1117687,3880376,-10059388,-17620940,-3612781,-21802117,-3567481,20456845,-1885033 }, + { 27019610,12299467,-13658288,-1603234,-12861660,-4861471,-19540150,-5016058,29439641,15138866 }, + { 21536104,-6626420,-32447818,-10690208,-22408077,5175814,-5420040,-16361163,7779328,109896 }, + }, + { + { 30279744,14648750,-8044871,6425558,13639621,-743509,28698390,12180118,23177719,-554075 }, + { 26572847,3405927,-31701700,12890905,-19265668,5335866,-6493768,2378492,4439158,-13279347 }, + { -22716706,3489070,-9225266,-332753,18875722,-1140095,14819434,-12731527,-17717757,-5461437 }, + }, + { + { -5056483,16566551,15953661,3767752,-10436499,15627060,-820954,2177225,8550082,-15114165 }, + { -18473302,16596775,-381660,15663611,22860960,15585581,-27844109,-3582739,-23260460,-8428588 }, + { -32480551,15707275,-8205912,-5652081,29464558,2713815,-22725137,15860482,-21902570,1494193 }, + }, + { + { -19562091,-14087393,-25583872,-9299552,13127842,759709,21923482,16529112,8742704,12967017 }, + { -28464899,1553205,32536856,-10473729,-24691605,-406174,-8914625,-2933896,-29903758,15553883 }, + { 21877909,3230008,9881174,10539357,-4797115,2841332,11543572,14513274,19375923,-12647961 }, + }, + { + { 8832269,-14495485,13253511,5137575,5037871,4078777,24880818,-6222716,2862653,9455043 }, + { 29306751,5123106,20245049,-14149889,9592566,8447059,-2077124,-2990080,15511449,4789663 }, + { -20679756,7004547,8824831,-9434977,-4045704,-3750736,-5754762,108893,23513200,16652362 }, + }, +}, +{ + { + { -33256173,4144782,-4476029,-6579123,10770039,-7155542,-6650416,-12936300,-18319198,10212860 }, + { 2756081,8598110,7383731,-6859892,22312759,-1105012,21179801,2600940,-9988298,-12506466 }, + { -24645692,13317462,-30449259,-15653928,21365574,-10869657,11344424,864440,-2499677,-16710063 }, + }, + { + { -26432803,6148329,-17184412,-14474154,18782929,-275997,-22561534,211300,2719757,4940997 }, + { -1323882,3911313,-6948744,14759765,-30027150,7851207,21690126,8518463,26699843,5276295 }, + { -13149873,-6429067,9396249,365013,24703301,-10488939,1321586,149635,-15452774,7159369 }, + }, + { + { 9987780,-3404759,17507962,9505530,9731535,-2165514,22356009,8312176,22477218,-8403385 }, + { 18155857,-16504990,19744716,9006923,15154154,-10538976,24256460,-4864995,-22548173,9334109 }, + { 2986088,-4911893,10776628,-3473844,10620590,-7083203,-21413845,14253545,-22587149,536906 }, + }, + { + { 4377756,8115836,24567078,15495314,11625074,13064599,7390551,10589625,10838060,-15420424 }, + { -19342404,867880,9277171,-3218459,-14431572,-1986443,19295826,-15796950,6378260,699185 }, + { 7895026,4057113,-7081772,-13077756,-17886831,-323126,-716039,15693155,-5045064,-13373962 }, + }, + { + { -7737563,-5869402,-14566319,-7406919,11385654,13201616,31730678,-10962840,-3918636,-9669325 }, + { 10188286,-15770834,-7336361,13427543,22223443,14896287,30743455,7116568,-21786507,5427593 }, + { 696102,13206899,27047647,-10632082,15285305,-9853179,10798490,-4578720,19236243,12477404 }, + }, + { + { -11229439,11243796,-17054270,-8040865,-788228,-8167967,-3897669,11180504,-23169516,7733644 }, + { 17800790,-14036179,-27000429,-11766671,23887827,3149671,23466177,-10538171,10322027,15313801 }, + { 26246234,11968874,32263343,-5468728,6830755,-13323031,-15794704,-101982,-24449242,10890804 }, + }, + { + { -31365647,10271363,-12660625,-6267268,16690207,-13062544,-14982212,16484931,25180797,-5334884 }, + { -586574,10376444,-32586414,-11286356,19801893,10997610,2276632,9482883,316878,13820577 }, + { -9882808,-4510367,-2115506,16457136,-11100081,11674996,30756178,-7515054,30696930,-3712849 }, + }, + { + { 32988917,-9603412,12499366,7910787,-10617257,-11931514,-7342816,-9985397,-32349517,7392473 }, + { -8855661,15927861,9866406,-3649411,-2396914,-16655781,-30409476,-9134995,25112947,-2926644 }, + { -2504044,-436966,25621774,-5678772,15085042,-5479877,-24884878,-13526194,5537438,-13914319 }, + }, +}, +{ + { + { -11225584,2320285,-9584280,10149187,-33444663,5808648,-14876251,-1729667,31234590,6090599 }, + { -9633316,116426,26083934,2897444,-6364437,-2688086,609721,15878753,-6970405,-9034768 }, + { -27757857,247744,-15194774,-9002551,23288161,-10011936,-23869595,6503646,20650474,1804084 }, + }, + { + { -27589786,15456424,8972517,8469608,15640622,4439847,3121995,-10329713,27842616,-202328 }, + { -15306973,2839644,22530074,10026331,4602058,5048462,28248656,5031932,-11375082,12714369 }, + { 20807691,-7270825,29286141,11421711,-27876523,-13868230,-21227475,1035546,-19733229,12796920 }, + }, + { + { 12076899,-14301286,-8785001,-11848922,-25012791,16400684,-17591495,-12899438,3480665,-15182815 }, + { -32361549,5457597,28548107,7833186,7303070,-11953545,-24363064,-15921875,-33374054,2771025 }, + { -21389266,421932,26597266,6860826,22486084,-6737172,-17137485,-4210226,-24552282,15673397 }, + }, + { + { -20184622,2338216,19788685,-9620956,-4001265,-8740893,-20271184,4733254,3727144,-12934448 }, + { 6120119,814863,-11794402,-622716,6812205,-15747771,2019594,7975683,31123697,-10958981 }, + { 30069250,-11435332,30434654,2958439,18399564,-976289,12296869,9204260,-16432438,9648165 }, + }, + { + { 32705432,-1550977,30705658,7451065,-11805606,9631813,3305266,5248604,-26008332,-11377501 }, + { 17219865,2375039,-31570947,-5575615,-19459679,9219903,294711,15298639,2662509,-16297073 }, + { -1172927,-7558695,-4366770,-4287744,-21346413,-8434326,32087529,-1222777,32247248,-14389861 }, + }, + { + { 14312628,1221556,17395390,-8700143,-4945741,-8684635,-28197744,-9637817,-16027623,-13378845 }, + { -1428825,-9678990,-9235681,6549687,-7383069,-468664,23046502,9803137,17597934,2346211 }, + { 18510800,15337574,26171504,981392,-22241552,7827556,-23491134,-11323352,3059833,-11782870 }, + }, + { + { 10141598,6082907,17829293,-1947643,9830092,13613136,-25556636,-5544586,-33502212,3592096 }, + { 33114168,-15889352,-26525686,-13343397,33076705,8716171,1151462,1521897,-982665,-6837803 }, + { -32939165,-4255815,23947181,-324178,-33072974,-12305637,-16637686,3891704,26353178,693168 }, + }, + { + { 30374239,1595580,-16884039,13186931,4600344,406904,9585294,-400668,31375464,14369965 }, + { -14370654,-7772529,1510301,6434173,-18784789,-6262728,32732230,-13108839,17901441,16011505 }, + { 18171223,-11934626,-12500402,15197122,-11038147,-15230035,-19172240,-16046376,8764035,12309598 }, + }, +}, +{ + { + { 5975908,-5243188,-19459362,-9681747,-11541277,14015782,-23665757,1228319,17544096,-10593782 }, + { 5811932,-1715293,3442887,-2269310,-18367348,-8359541,-18044043,-15410127,-5565381,12348900 }, + { -31399660,11407555,25755363,6891399,-3256938,14872274,-24849353,8141295,-10632534,-585479 }, + }, + { + { -12675304,694026,-5076145,13300344,14015258,-14451394,-9698672,-11329050,30944593,1130208 }, + { 8247766,-6710942,-26562381,-7709309,-14401939,-14648910,4652152,2488540,23550156,-271232 }, + { 17294316,-3788438,7026748,15626851,22990044,113481,2267737,-5908146,-408818,-137719 }, + }, + { + { 16091085,-16253926,18599252,7340678,2137637,-1221657,-3364161,14550936,3260525,-7166271 }, + { -4910104,-13332887,18550887,10864893,-16459325,-7291596,-23028869,-13204905,-12748722,2701326 }, + { -8574695,16099415,4629974,-16340524,-20786213,-6005432,-10018363,9276971,11329923,1862132 }, + }, + { + { 14763076,-15903608,-30918270,3689867,3511892,10313526,-21951088,12219231,-9037963,-940300 }, + { 8894987,-3446094,6150753,3013931,301220,15693451,-31981216,-2909717,-15438168,11595570 }, + { 15214962,3537601,-26238722,-14058872,4418657,-15230761,13947276,10730794,-13489462,-4363670 }, + }, + { + { -2538306,7682793,32759013,263109,-29984731,-7955452,-22332124,-10188635,977108,699994 }, + { -12466472,4195084,-9211532,550904,-15565337,12917920,19118110,-439841,-30534533,-14337913 }, + { 31788461,-14507657,4799989,7372237,8808585,-14747943,9408237,-10051775,12493932,-5409317 }, + }, + { + { -25680606,5260744,-19235809,-6284470,-3695942,16566087,27218280,2607121,29375955,6024730 }, + { 842132,-2794693,-4763381,-8722815,26332018,-12405641,11831880,6985184,-9940361,2854096 }, + { -4847262,-7969331,2516242,-5847713,9695691,-7221186,16512645,960770,12121869,16648078 }, + }, + { + { -15218652,14667096,-13336229,2013717,30598287,-464137,-31504922,-7882064,20237806,2838411 }, + { -19288047,4453152,15298546,-16178388,22115043,-15972604,12544294,-13470457,1068881,-12499905 }, + { -9558883,-16518835,33238498,13506958,30505848,-1114596,-8486907,-2630053,12521378,4845654 }, + }, + { + { -28198521,10744108,-2958380,10199664,7759311,-13088600,3409348,-873400,-6482306,-12885870 }, + { -23561822,6230156,-20382013,10655314,-24040585,-11621172,10477734,-1240216,-3113227,13974498 }, + { 12966261,15550616,-32038948,-1615346,21025980,-629444,5642325,7188737,18895762,12629579 }, + }, +}, +{ + { + { 14741879,-14946887,22177208,-11721237,1279741,8058600,11758140,789443,32195181,3895677 }, + { 10758205,15755439,-4509950,9243698,-4879422,6879879,-2204575,-3566119,-8982069,4429647 }, + { -2453894,15725973,-20436342,-10410672,-5803908,-11040220,-7135870,-11642895,18047436,-15281743 }, + }, + { + { -25173001,-11307165,29759956,11776784,-22262383,-15820455,10993114,-12850837,-17620701,-9408468 }, + { 21987233,700364,-24505048,14972008,-7774265,-5718395,32155026,2581431,-29958985,8773375 }, + { -25568350,454463,-13211935,16126715,25240068,8594567,20656846,12017935,-7874389,-13920155 }, + }, + { + { 6028182,6263078,-31011806,-11301710,-818919,2461772,-31841174,-5468042,-1721788,-2776725 }, + { -12278994,16624277,987579,-5922598,32908203,1248608,7719845,-4166698,28408820,6816612 }, + { -10358094,-8237829,19549651,-12169222,22082623,16147817,20613181,13982702,-10339570,5067943 }, + }, + { + { -30505967,-3821767,12074681,13582412,-19877972,2443951,-19719286,12746132,5331210,-10105944 }, + { 30528811,3601899,-1957090,4619785,-27361822,-15436388,24180793,-12570394,27679908,-1648928 }, + { 9402404,-13957065,32834043,10838634,-26580150,-13237195,26653274,-8685565,22611444,-12715406 }, + }, + { + { 22190590,1118029,22736441,15130463,-30460692,-5991321,19189625,-4648942,4854859,6622139 }, + { -8310738,-2953450,-8262579,-3388049,-10401731,-271929,13424426,-3567227,26404409,13001963 }, + { -31241838,-15415700,-2994250,8939346,11562230,-12840670,-26064365,-11621720,-15405155,11020693 }, + }, + { + { 1866042,-7949489,-7898649,-10301010,12483315,13477547,3175636,-12424163,28761762,1406734 }, + { -448555,-1777666,13018551,3194501,-9580420,-11161737,24760585,-4347088,25577411,-13378680 }, + { -24290378,4759345,-690653,-1852816,2066747,10693769,-29595790,9884936,-9368926,4745410 }, + }, + { + { -9141284,6049714,-19531061,-4341411,-31260798,9944276,-15462008,-11311852,10931924,-11931931 }, + { -16561513,14112680,-8012645,4817318,-8040464,-11414606,-22853429,10856641,-20470770,13434654 }, + { 22759489,-10073434,-16766264,-1871422,13637442,-10168091,1765144,-12654326,28445307,-5364710 }, + }, + { + { 29875063,12493613,2795536,-3786330,1710620,15181182,-10195717,-8788675,9074234,1167180 }, + { -26205683,11014233,-9842651,-2635485,-26908120,7532294,-18716888,-9535498,3843903,9367684 }, + { -10969595,-6403711,9591134,9582310,11349256,108879,16235123,8601684,-139197,4242895 }, + }, +}, +{ + { + { 22092954,-13191123,-2042793,-11968512,32186753,-11517388,-6574341,2470660,-27417366,16625501 }, + { -11057722,3042016,13770083,-9257922,584236,-544855,-7770857,2602725,-27351616,14247413 }, + { 6314175,-10264892,-32772502,15957557,-10157730,168750,-8618807,14290061,27108877,-1180880 }, + }, + { + { -8586597,-7170966,13241782,10960156,-32991015,-13794596,33547976,-11058889,-27148451,981874 }, + { 22833440,9293594,-32649448,-13618667,-9136966,14756819,-22928859,-13970780,-10479804,-16197962 }, + { -7768587,3326786,-28111797,10783824,19178761,14905060,22680049,13906969,-15933690,3797899 }, + }, + { + { 21721356,-4212746,-12206123,9310182,-3882239,-13653110,23740224,-2709232,20491983,-8042152 }, + { 9209270,-15135055,-13256557,-6167798,-731016,15289673,25947805,15286587,30997318,-6703063 }, + { 7392032,16618386,23946583,-8039892,-13265164,-1533858,-14197445,-2321576,17649998,-250080 }, + }, + { + { -9301088,-14193827,30609526,-3049543,-25175069,-1283752,-15241566,-9525724,-2233253,7662146 }, + { -17558673,1763594,-33114336,15908610,-30040870,-12174295,7335080,-8472199,-3174674,3440183 }, + { -19889700,-5977008,-24111293,-9688870,10799743,-16571957,40450,-4431835,4862400,1133 }, + }, + { + { -32856209,-7873957,-5422389,14860950,-16319031,7956142,7258061,311861,-30594991,-7379421 }, + { -3773428,-1565936,28985340,7499440,24445838,9325937,29727763,16527196,18278453,15405622 }, + { -4381906,8508652,-19898366,-3674424,-5984453,15149970,-13313598,843523,-21875062,13626197 }, + }, + { + { 2281448,-13487055,-10915418,-2609910,1879358,16164207,-10783882,3953792,13340839,15928663 }, + { 31727126,-7179855,-18437503,-8283652,2875793,-16390330,-25269894,-7014826,-23452306,5964753 }, + { 4100420,-5959452,-17179337,6017714,-18705837,12227141,-26684835,11344144,2538215,-7570755 }, + }, + { + { -9433605,6123113,11159803,-2156608,30016280,14966241,-20474983,1485421,-629256,-15958862 }, + { -26804558,4260919,11851389,9658551,-32017107,16367492,-20205425,-13191288,11659922,-11115118 }, + { 26180396,10015009,-30844224,-8581293,5418197,9480663,2231568,-10170080,33100372,-1306171 }, + }, + { + { 15121113,-5201871,-10389905,15427821,-27509937,-15992507,21670947,4486675,-5931810,-14466380 }, + { 16166486,-9483733,-11104130,6023908,-31926798,-1364923,2340060,-16254968,-10735770,-10039824 }, + { 28042865,-3557089,-12126526,12259706,-3717498,-6945899,6766453,-8689599,18036436,5803270 }, + }, +}, +{ + { + { -817581,6763912,11803561,1585585,10958447,-2671165,23855391,4598332,-6159431,-14117438 }, + { -31031306,-14256194,17332029,-2383520,31312682,-5967183,696309,50292,-20095739,11763584 }, + { -594563,-2514283,-32234153,12643980,12650761,14811489,665117,-12613632,-19773211,-10713562 }, + }, + { + { 30464590,-11262872,-4127476,-12734478,19835327,-7105613,-24396175,2075773,-17020157,992471 }, + { 18357185,-6994433,7766382,16342475,-29324918,411174,14578841,8080033,-11574335,-10601610 }, + { 19598397,10334610,12555054,2555664,18821899,-10339780,21873263,16014234,26224780,16452269 }, + }, + { + { -30223925,5145196,5944548,16385966,3976735,2009897,-11377804,-7618186,-20533829,3698650 }, + { 14187449,3448569,-10636236,-10810935,-22663880,-3433596,7268410,-10890444,27394301,12015369 }, + { 19695761,16087646,28032085,12999827,6817792,11427614,20244189,-1312777,-13259127,-3402461 }, + }, + { + { 30860103,12735208,-1888245,-4699734,-16974906,2256940,-8166013,12298312,-8550524,-10393462 }, + { -5719826,-11245325,-1910649,15569035,26642876,-7587760,-5789354,-15118654,-4976164,12651793 }, + { -2848395,9953421,11531313,-5282879,26895123,-12697089,-13118820,-16517902,9768698,-2533218 }, + }, + { + { -24719459,1894651,-287698,-4704085,15348719,-8156530,32767513,12765450,4940095,10678226 }, + { 18860224,15980149,-18987240,-1562570,-26233012,-11071856,-7843882,13944024,-24372348,16582019 }, + { -15504260,4970268,-29893044,4175593,-20993212,-2199756,-11704054,15444560,-11003761,7989037 }, + }, + { + { 31490452,5568061,-2412803,2182383,-32336847,4531686,-32078269,6200206,-19686113,-14800171 }, + { -17308668,-15879940,-31522777,-2831,-32887382,16375549,8680158,-16371713,28550068,-6857132 }, + { -28126887,-5688091,16837845,-1820458,-6850681,12700016,-30039981,4364038,1155602,5988841 }, + }, + { + { 21890435,-13272907,-12624011,12154349,-7831873,15300496,23148983,-4470481,24618407,8283181 }, + { -33136107,-10512751,9975416,6841041,-31559793,16356536,3070187,-7025928,1466169,10740210 }, + { -1509399,-15488185,-13503385,-10655916,32799044,909394,-13938903,-5779719,-32164649,-15327040 }, + }, + { + { 3960823,-14267803,-28026090,-15918051,-19404858,13146868,15567327,951507,-3260321,-573935 }, + { 24740841,5052253,-30094131,8961361,25877428,6165135,-24368180,14397372,-7380369,-6144105 }, + { -28888365,3510803,-28103278,-1158478,-11238128,-10631454,-15441463,-14453128,-1625486,-6494814 }, + }, +}, +{ + { + { 793299,-9230478,8836302,-6235707,-27360908,-2369593,33152843,-4885251,-9906200,-621852 }, + { 5666233,525582,20782575,-8038419,-24538499,14657740,16099374,1468826,-6171428,-15186581 }, + { -4859255,-3779343,-2917758,-6748019,7778750,11688288,-30404353,-9871238,-1558923,-9863646 }, + }, + { + { 10896332,-7719704,824275,472601,-19460308,3009587,25248958,14783338,-30581476,-15757844 }, + { 10566929,12612572,-31944212,11118703,-12633376,12362879,21752402,8822496,24003793,14264025 }, + { 27713862,-7355973,-11008240,9227530,27050101,2504721,23886875,-13117525,13958495,-5732453 }, + }, + { + { -23481610,4867226,-27247128,3900521,29838369,-8212291,-31889399,-10041781,7340521,-15410068 }, + { 4646514,-8011124,-22766023,-11532654,23184553,8566613,31366726,-1381061,-15066784,-10375192 }, + { -17270517,12723032,-16993061,14878794,21619651,-6197576,27584817,3093888,-8843694,3849921 }, + }, + { + { -9064912,2103172,25561640,-15125738,-5239824,9582958,32477045,-9017955,5002294,-15550259 }, + { -12057553,-11177906,21115585,-13365155,8808712,-12030708,16489530,13378448,-25845716,12741426 }, + { -5946367,10645103,-30911586,15390284,-3286982,-7118677,24306472,15852464,28834118,-7646072 }, + }, + { + { -17335748,-9107057,-24531279,9434953,-8472084,-583362,-13090771,455841,20461858,5491305 }, + { 13669248,-16095482,-12481974,-10203039,-14569770,-11893198,-24995986,11293807,-28588204,-9421832 }, + { 28497928,6272777,-33022994,14470570,8906179,-1225630,18504674,-14165166,29867745,-8795943 }, + }, + { + { -16207023,13517196,-27799630,-13697798,24009064,-6373891,-6367600,-13175392,22853429,-4012011 }, + { 24191378,16712145,-13931797,15217831,14542237,1646131,18603514,-11037887,12876623,-2112447 }, + { 17902668,4518229,-411702,-2829247,26878217,5258055,-12860753,608397,16031844,3723494 }, + }, + { + { -28632773,12763728,-20446446,7577504,33001348,-13017745,17558842,-7872890,23896954,-4314245 }, + { -20005381,-12011952,31520464,605201,2543521,5991821,-2945064,7229064,-9919646,-8826859 }, + { 28816045,298879,-28165016,-15920938,19000928,-1665890,-12680833,-2949325,-18051778,-2082915 }, + }, + { + { 16000882,-344896,3493092,-11447198,-29504595,-13159789,12577740,16041268,-19715240,7847707 }, + { 10151868,10572098,27312476,7922682,14825339,4723128,-32855931,-6519018,-10020567,3852848 }, + { -11430470,15697596,-21121557,-4420647,5386314,15063598,16514493,-15932110,29330899,-15076224 }, + }, +}, +{ + { + { -25499735,-4378794,-15222908,-6901211,16615731,2051784,3303702,15490,-27548796,12314391 }, + { 15683520,-6003043,18109120,-9980648,15337968,-5997823,-16717435,15921866,16103996,-3731215 }, + { -23169824,-10781249,13588192,-1628807,-3798557,-1074929,-19273607,5402699,-29815713,-9841101 }, + }, + { + { 23190676,2384583,-32714340,3462154,-29903655,-1529132,-11266856,8911517,-25205859,2739713 }, + { 21374101,-3554250,-33524649,9874411,15377179,11831242,-33529904,6134907,4931255,11987849 }, + { -7732,-2978858,-16223486,7277597,105524,-322051,-31480539,13861388,-30076310,10117930 }, + }, + { + { -29501170,-10744872,-26163768,13051539,-25625564,5089643,-6325503,6704079,12890019,15728940 }, + { -21972360,-11771379,-951059,-4418840,14704840,2695116,903376,-10428139,12885167,8311031 }, + { -17516482,5352194,10384213,-13811658,7506451,13453191,26423267,4384730,1888765,-5435404 }, + }, + { + { -25817338,-3107312,-13494599,-3182506,30896459,-13921729,-32251644,-12707869,-19464434,-3340243 }, + { -23607977,-2665774,-526091,4651136,5765089,4618330,6092245,14845197,17151279,-9854116 }, + { -24830458,-12733720,-15165978,10367250,-29530908,-265356,22825805,-7087279,-16866484,16176525 }, + }, + { + { -23583256,6564961,20063689,3798228,-4740178,7359225,2006182,-10363426,-28746253,-10197509 }, + { -10626600,-4486402,-13320562,-5125317,3432136,-6393229,23632037,-1940610,32808310,1099883 }, + { 15030977,5768825,-27451236,-2887299,-6427378,-15361371,-15277896,-6809350,2051441,-15225865 }, + }, + { + { -3362323,-7239372,7517890,9824992,23555850,295369,5148398,-14154188,-22686354,16633660 }, + { 4577086,-16752288,13249841,-15304328,19958763,-14537274,18559670,-10759549,8402478,-9864273 }, + { -28406330,-1051581,-26790155,-907698,-17212414,-11030789,9453451,-14980072,17983010,9967138 }, + }, + { + { -25762494,6524722,26585488,9969270,24709298,1220360,-1677990,7806337,17507396,3651560 }, + { -10420457,-4118111,14584639,15971087,-15768321,8861010,26556809,-5574557,-18553322,-11357135 }, + { 2839101,14284142,4029895,3472686,14402957,12689363,-26642121,8459447,-5605463,-7621941 }, + }, + { + { -4839289,-3535444,9744961,2871048,25113978,3187018,-25110813,-849066,17258084,-7977739 }, + { 18164541,-10595176,-17154882,-1542417,19237078,-9745295,23357533,-15217008,26908270,12150756 }, + { -30264870,-7647865,5112249,-7036672,-1499807,-6974257,43168,-5537701,-32302074,16215819 }, + }, +}, +{ + { + { -6898905,9824394,-12304779,-4401089,-31397141,-6276835,32574489,12532905,-7503072,-8675347 }, + { -27343522,-16515468,-27151524,-10722951,946346,16291093,254968,7168080,21676107,-1943028 }, + { 21260961,-8424752,-16831886,-11920822,-23677961,3968121,-3651949,-6215466,-3556191,-7913075 }, + }, + { + { 16544754,13250366,-16804428,15546242,-4583003,12757258,-2462308,-8680336,-18907032,-9662799 }, + { -2415239,-15577728,18312303,4964443,-15272530,-12653564,26820651,16690659,25459437,-4564609 }, + { -25144690,11425020,28423002,-11020557,-6144921,-15826224,9142795,-2391602,-6432418,-1644817 }, + }, + { + { -23104652,6253476,16964147,-3768872,-25113972,-12296437,-27457225,-16344658,6335692,7249989 }, + { -30333227,13979675,7503222,-12368314,-11956721,-4621693,-30272269,2682242,25993170,-12478523 }, + { 4364628,5930691,32304656,-10044554,-8054781,15091131,22857016,-10598955,31820368,15075278 }, + }, + { + { 31879134,-8918693,17258761,90626,-8041836,-4917709,24162788,-9650886,-17970238,12833045 }, + { 19073683,14851414,-24403169,-11860168,7625278,11091125,-19619190,2074449,-9413939,14905377 }, + { 24483667,-11935567,-2518866,-11547418,-1553130,15355506,-25282080,9253129,27628530,-7555480 }, + }, + { + { 17597607,8340603,19355617,552187,26198470,-3176583,4593324,-9157582,-14110875,15297016 }, + { 510886,14337390,-31785257,16638632,6328095,2713355,-20217417,-11864220,8683221,2921426 }, + { 18606791,11874196,27155355,-5281482,-24031742,6265446,-25178240,-1278924,4674690,13890525 }, + }, + { + { 13609624,13069022,-27372361,-13055908,24360586,9592974,14977157,9835105,4389687,288396 }, + { 9922506,-519394,13613107,5883594,-18758345,-434263,-12304062,8317628,23388070,16052080 }, + { 12720016,11937594,-31970060,-5028689,26900120,8561328,-20155687,-11632979,-14754271,-10812892 }, + }, + { + { 15961858,14150409,26716931,-665832,-22794328,13603569,11829573,7467844,-28822128,929275 }, + { 11038231,-11582396,-27310482,-7316562,-10498527,-16307831,-23479533,-9371869,-21393143,2465074 }, + { 20017163,-4323226,27915242,1529148,12396362,15675764,13817261,-9658066,2463391,-4622140 }, + }, + { + { -16358878,-12663911,-12065183,4996454,-1256422,1073572,9583558,12851107,4003896,12673717 }, + { -1731589,-15155870,-3262930,16143082,19294135,13385325,14741514,-9103726,7903886,2348101 }, + { 24536016,-16515207,12715592,-3862155,1511293,10047386,-3842346,-7129159,-28377538,10048127 }, + }, +}, +{ + { + { -12622226,-6204820,30718825,2591312,-10617028,12192840,18873298,-7297090,-32297756,15221632 }, + { -26478122,-11103864,11546244,-1852483,9180880,7656409,-21343950,2095755,29769758,6593415 }, + { -31994208,-2907461,4176912,3264766,12538965,-868111,26312345,-6118678,30958054,8292160 }, + }, + { + { 31429822,-13959116,29173532,15632448,12174511,-2760094,32808831,3977186,26143136,-3148876 }, + { 22648901,1402143,-22799984,13746059,7936347,365344,-8668633,-1674433,-3758243,-2304625 }, + { -15491917,8012313,-2514730,-12702462,-23965846,-10254029,-1612713,-1535569,-16664475,8194478 }, + }, + { + { 27338066,-7507420,-7414224,10140405,-19026427,-6589889,27277191,8855376,28572286,3005164 }, + { 26287124,4821776,25476601,-4145903,-3764513,-15788984,-18008582,1182479,-26094821,-13079595 }, + { -7171154,3178080,23970071,6201893,-17195577,-4489192,-21876275,-13982627,32208683,-1198248 }, + }, + { + { -16657702,2817643,-10286362,14811298,6024667,13349505,-27315504,-10497842,-27672585,-11539858 }, + { 15941029,-9405932,-21367050,8062055,31876073,-238629,-15278393,-1444429,15397331,-4130193 }, + { 8934485,-13485467,-23286397,-13423241,-32446090,14047986,31170398,-1441021,-27505566,15087184 }, + }, + { + { -18357243,-2156491,24524913,-16677868,15520427,-6360776,-15502406,11461896,16788528,-5868942 }, + { -1947386,16013773,21750665,3714552,-17401782,-16055433,-3770287,-10323320,31322514,-11615635 }, + { 21426655,-5650218,-13648287,-5347537,-28812189,-4920970,-18275391,-14621414,13040862,-12112948 }, + }, + { + { 11293895,12478086,-27136401,15083750,-29307421,14748872,14555558,-13417103,1613711,4896935 }, + { -25894883,15323294,-8489791,-8057900,25967126,-13425460,2825960,-4897045,-23971776,-11267415 }, + { -15924766,-5229880,-17443532,6410664,3622847,10243618,20615400,12405433,-23753030,-8436416 }, + }, + { + { -7091295,12556208,-20191352,9025187,-17072479,4333801,4378436,2432030,23097949,-566018 }, + { 4565804,-16025654,20084412,-7842817,1724999,189254,24767264,10103221,-18512313,2424778 }, + { 366633,-11976806,8173090,-6890119,30788634,5745705,-7168678,1344109,-3642553,12412659 }, + }, + { + { -24001791,7690286,14929416,-168257,-32210835,-13412986,24162697,-15326504,-3141501,11179385 }, + { 18289522,-14724954,8056945,16430056,-21729724,7842514,-6001441,-1486897,-18684645,-11443503 }, + { 476239,6601091,-6152790,-9723375,17503545,-4863900,27672959,13403813,11052904,5219329 }, + }, +}, +{ + { + { 20678546,-8375738,-32671898,8849123,-5009758,14574752,31186971,-3973730,9014762,-8579056 }, + { -13644050,-10350239,-15962508,5075808,-1514661,-11534600,-33102500,9160280,8473550,-3256838 }, + { 24900749,14435722,17209120,-15292541,-22592275,9878983,-7689309,-16335821,-24568481,11788948 }, + }, + { + { -3118155,-11395194,-13802089,14797441,9652448,-6845904,-20037437,10410733,-24568470,-1458691 }, + { -15659161,16736706,-22467150,10215878,-9097177,7563911,11871841,-12505194,-18513325,8464118 }, + { -23400612,8348507,-14585951,-861714,-3950205,-6373419,14325289,8628612,33313881,-8370517 }, + }, + { + { -20186973,-4967935,22367356,5271547,-1097117,-4788838,-24805667,-10236854,-8940735,-5818269 }, + { -6948785,-1795212,-32625683,-16021179,32635414,-7374245,15989197,-12838188,28358192,-4253904 }, + { -23561781,-2799059,-32351682,-1661963,-9147719,10429267,-16637684,4072016,-5351664,5596589 }, + }, + { + { -28236598,-3390048,12312896,6213178,3117142,16078565,29266239,2557221,1768301,15373193 }, + { -7243358,-3246960,-4593467,-7553353,-127927,-912245,-1090902,-4504991,-24660491,3442910 }, + { -30210571,5124043,14181784,8197961,18964734,-11939093,22597931,7176455,-18585478,13365930 }, + }, + { + { -7877390,-1499958,8324673,4690079,6261860,890446,24538107,-8570186,-9689599,-3031667 }, + { 25008904,-10771599,-4305031,-9638010,16265036,15721635,683793,-11823784,15723479,-15163481 }, + { -9660625,12374379,-27006999,-7026148,-7724114,-12314514,11879682,5400171,519526,-1235876 }, + }, + { + { 22258397,-16332233,-7869817,14613016,-22520255,-2950923,-20353881,7315967,16648397,7605640 }, + { -8081308,-8464597,-8223311,9719710,19259459,-15348212,23994942,-5281555,-9468848,4763278 }, + { -21699244,9220969,-15730624,1084137,-25476107,-2852390,31088447,-7764523,-11356529,728112 }, + }, + { + { 26047220,-11751471,-6900323,-16521798,24092068,9158119,-4273545,-12555558,-29365436,-5498272 }, + { 17510331,-322857,5854289,8403524,17133918,-3112612,-28111007,12327945,10750447,10014012 }, + { -10312768,3936952,9156313,-8897683,16498692,-994647,-27481051,-666732,3424691,7540221 }, + }, + { + { 30322361,-6964110,11361005,-4143317,7433304,4989748,-7071422,-16317219,-9244265,15258046 }, + { 13054562,-2779497,19155474,469045,-12482797,4566042,5631406,2711395,1062915,-5136345 }, + { -19240248,-11254599,-29509029,-7499965,-5835763,13005411,-6066489,12194497,32960380,1459310 }, + }, +}, +{ + { + { 19852034,7027924,23669353,10020366,8586503,-6657907,394197,-6101885,18638003,-11174937 }, + { 31395534,15098109,26581030,8030562,-16527914,-5007134,9012486,-7584354,-6643087,-5442636 }, + { -9192165,-2347377,-1997099,4529534,25766844,607986,-13222,9677543,-32294889,-6456008 }, + }, + { + { -2444496,-149937,29348902,8186665,1873760,12489863,-30934579,-7839692,-7852844,-8138429 }, + { -15236356,-15433509,7766470,746860,26346930,-10221762,-27333451,10754588,-9431476,5203576 }, + { 31834314,14135496,-770007,5159118,20917671,-16768096,-7467973,-7337524,31809243,7347066 }, + }, + { + { -9606723,-11874240,20414459,13033986,13716524,-11691881,19797970,-12211255,15192876,-2087490 }, + { -12663563,-2181719,1168162,-3804809,26747877,-14138091,10609330,12694420,33473243,-13382104 }, + { 33184999,11180355,15832085,-11385430,-1633671,225884,15089336,-11023903,-6135662,14480053 }, + }, + { + { 31308717,-5619998,31030840,-1897099,15674547,-6582883,5496208,13685227,27595050,8737275 }, + { -20318852,-15150239,10933843,-16178022,8335352,-7546022,-31008351,-12610604,26498114,66511 }, + { 22644454,-8761729,-16671776,4884562,-3105614,-13559366,30540766,-4286747,-13327787,-7515095 }, + }, + { + { -28017847,9834845,18617207,-2681312,-3401956,-13307506,8205540,13585437,-17127465,15115439 }, + { 23711543,-672915,31206561,-8362711,6164647,-9709987,-33535882,-1426096,8236921,16492939 }, + { -23910559,-13515526,-26299483,-4503841,25005590,-7687270,19574902,10071562,6708380,-6222424 }, + }, + { + { 2101391,-4930054,19702731,2367575,-15427167,1047675,5301017,9328700,29955601,-11678310 }, + { 3096359,9271816,-21620864,-15521844,-14847996,-7592937,-25892142,-12635595,-9917575,6216608 }, + { -32615849,338663,-25195611,2510422,-29213566,-13820213,24822830,-6146567,-26767480,7525079 }, + }, + { + { -23066649,-13985623,16133487,-7896178,-3389565,778788,-910336,-2782495,-19386633,11994101 }, + { 21691500,-13624626,-641331,-14367021,3285881,-3483596,-25064666,9718258,-7477437,13381418 }, + { 18445390,-4202236,14979846,11622458,-1727110,-3582980,23111648,-6375247,28535282,15779576 }, + }, + { + { 30098053,3089662,-9234387,16662135,-21306940,11308411,-14068454,12021730,9955285,-16303356 }, + { 9734894,-14576830,-7473633,-9138735,2060392,11313496,-18426029,9924399,20194861,13380996 }, + { -26378102,-7965207,-22167821,15789297,-18055342,-6168792,-1984914,15707771,26342023,10146099 }, + }, +}, +{ + { + { -26016874,-219943,21339191,-41388,19745256,-2878700,-29637280,2227040,21612326,-545728 }, + { -13077387,1184228,23562814,-5970442,-20351244,-6348714,25764461,12243797,-20856566,11649658 }, + { -10031494,11262626,27384172,2271902,26947504,-15997771,39944,6114064,33514190,2333242 }, + }, + { + { -21433588,-12421821,8119782,7219913,-21830522,-9016134,-6679750,-12670638,24350578,-13450001 }, + { -4116307,-11271533,-23886186,4843615,-30088339,690623,-31536088,-10406836,8317860,12352766 }, + { 18200138,-14475911,-33087759,-2696619,-23702521,-9102511,-23552096,-2287550,20712163,6719373 }, + }, + { + { 26656208,6075253,-7858556,1886072,-28344043,4262326,11117530,-3763210,26224235,-3297458 }, + { -17168938,-14854097,-3395676,-16369877,-19954045,14050420,21728352,9493610,18620611,-16428628 }, + { -13323321,13325349,11432106,5964811,18609221,6062965,-5269471,-9725556,-30701573,-16479657 }, + }, + { + { -23860538,-11233159,26961357,1640861,-32413112,-16737940,12248509,-5240639,13735342,1934062 }, + { 25089769,6742589,17081145,-13406266,21909293,-16067981,-15136294,-3765346,-21277997,5473616 }, + { 31883677,-7961101,1083432,-11572403,22828471,13290673,-7125085,12469656,29111212,-5451014 }, + }, + { + { 24244947,-15050407,-26262976,2791540,-14997599,16666678,24367466,6388839,-10295587,452383 }, + { -25640782,-3417841,5217916,16224624,19987036,-4082269,-24236251,-5915248,15766062,8407814 }, + { -20406999,13990231,15495425,16395525,5377168,15166495,-8917023,-4388953,-8067909,2276718 }, + }, + { + { 30157918,12924066,-17712050,9245753,19895028,3368142,-23827587,5096219,22740376,-7303417 }, + { 2041139,-14256350,7783687,13876377,-25946985,-13352459,24051124,13742383,-15637599,13295222 }, + { 33338237,-8505733,12532113,7977527,9106186,-1715251,-17720195,-4612972,-4451357,-14669444 }, + }, + { + { -20045281,5454097,-14346548,6447146,28862071,1883651,-2469266,-4141880,7770569,9620597 }, + { 23208068,7979712,33071466,8149229,1758231,-10834995,30945528,-1694323,-33502340,-14767970 }, + { 1439958,-16270480,-1079989,-793782,4625402,10647766,-5043801,1220118,30494170,-11440799 }, + }, + { + { -5037580,-13028295,-2970559,-3061767,15640974,-6701666,-26739026,926050,-1684339,-13333647 }, + { 13908495,-3549272,30919928,-6273825,-21521863,7989039,9021034,9078865,3353509,4033511 }, + { -29663431,-15113610,32259991,-344482,24295849,-12912123,23161163,8839127,27485041,7356032 }, + }, +}, +{ + { + { 9661027,705443,11980065,-5370154,-1628543,14661173,-6346142,2625015,28431036,-16771834 }, + { -23839233,-8311415,-25945511,7480958,-17681669,-8354183,-22545972,14150565,15970762,4099461 }, + { 29262576,16756590,26350592,-8793563,8529671,-11208050,13617293,-9937143,11465739,8317062 }, + }, + { + { -25493081,-6962928,32500200,-9419051,-23038724,-2302222,14898637,3848455,20969334,-5157516 }, + { -20384450,-14347713,-18336405,13884722,-33039454,2842114,-21610826,-3649888,11177095,14989547 }, + { -24496721,-11716016,16959896,2278463,12066309,10137771,13515641,2581286,-28487508,9930240 }, + }, + { + { -17751622,-2097826,16544300,-13009300,-15914807,-14949081,18345767,-13403753,16291481,-5314038 }, + { -33229194,2553288,32678213,9875984,8534129,6889387,-9676774,6957617,4368891,9788741 }, + { 16660756,7281060,-10830758,12911820,20108584,-8101676,-21722536,-8613148,16250552,-11111103 }, + }, + { + { -19765507,2390526,-16551031,14161980,1905286,6414907,4689584,10604807,-30190403,4782747 }, + { -1354539,14736941,-7367442,-13292886,7710542,-14155590,-9981571,4383045,22546403,437323 }, + { 31665577,-12180464,-16186830,1491339,-18368625,3294682,27343084,2786261,-30633590,-14097016 }, + }, + { + { -14467279,-683715,-33374107,7448552,19294360,14334329,-19690631,2355319,-19284671,-6114373 }, + { 15121312,-15796162,6377020,-6031361,-10798111,-12957845,18952177,15496498,-29380133,11754228 }, + { -2637277,-13483075,8488727,-14303896,12728761,-1622493,7141596,11724556,22761615,-10134141 }, + }, + { + { 16918416,11729663,-18083579,3022987,-31015732,-13339659,-28741185,-12227393,32851222,11717399 }, + { 11166634,7338049,-6722523,4531520,-29468672,-7302055,31474879,3483633,-1193175,-4030831 }, + { -185635,9921305,31456609,-13536438,-12013818,13348923,33142652,6546660,-19985279,-3948376 }, + }, + { + { -32460596,11266712,-11197107,-7899103,31703694,3855903,-8537131,-12833048,-30772034,-15486313 }, + { -18006477,12709068,3991746,-6479188,-21491523,-10550425,-31135347,-16049879,10928917,3011958 }, + { -6957757,-15594337,31696059,334240,29576716,14796075,-30831056,-12805180,18008031,10258577 }, + }, + { + { -22448644,15655569,7018479,-4410003,-30314266,-1201591,-1853465,1367120,25127874,6671743 }, + { 29701166,-14373934,-10878120,9279288,-17568,13127210,21382910,11042292,25838796,4642684 }, + { -20430234,14955537,-24126347,8124619,-5369288,-5990470,30468147,-13900640,18423289,4177476 }, + }, +}, diff --git a/Sources/libsignal/curve25519/ed25519/base2.h b/Sources/libsignal/curve25519/ed25519/base2.h new file mode 100755 index 0000000..8c53844 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/base2.h @@ -0,0 +1,40 @@ + { + { 25967493,-14356035,29566456,3660896,-12694345,4014787,27544626,-11754271,-6079156,2047605 }, + { -12545711,934262,-2722910,3049990,-727428,9406986,12720692,5043384,19500929,-15469378 }, + { -8738181,4489570,9688441,-14785194,10184609,-12363380,29287919,11864899,-24514362,-4438546 }, + }, + { + { 15636291,-9688557,24204773,-7912398,616977,-16685262,27787600,-14772189,28944400,-1550024 }, + { 16568933,4717097,-11556148,-1102322,15682896,-11807043,16354577,-11775962,7689662,11199574 }, + { 30464156,-5976125,-11779434,-15670865,23220365,15915852,7512774,10017326,-17749093,-9920357 }, + }, + { + { 10861363,11473154,27284546,1981175,-30064349,12577861,32867885,14515107,-15438304,10819380 }, + { 4708026,6336745,20377586,9066809,-11272109,6594696,-25653668,12483688,-12668491,5581306 }, + { 19563160,16186464,-29386857,4097519,10237984,-4348115,28542350,13850243,-23678021,-15815942 }, + }, + { + { 5153746,9909285,1723747,-2777874,30523605,5516873,19480852,5230134,-23952439,-15175766 }, + { -30269007,-3463509,7665486,10083793,28475525,1649722,20654025,16520125,30598449,7715701 }, + { 28881845,14381568,9657904,3680757,-20181635,7843316,-31400660,1370708,29794553,-1409300 }, + }, + { + { -22518993,-6692182,14201702,-8745502,-23510406,8844726,18474211,-1361450,-13062696,13821877 }, + { -6455177,-7839871,3374702,-4740862,-27098617,-10571707,31655028,-7212327,18853322,-14220951 }, + { 4566830,-12963868,-28974889,-12240689,-7602672,-2830569,-8514358,-10431137,2207753,-3209784 }, + }, + { + { -25154831,-4185821,29681144,7868801,-6854661,-9423865,-12437364,-663000,-31111463,-16132436 }, + { 25576264,-2703214,7349804,-11814844,16472782,9300885,3844789,15725684,171356,6466918 }, + { 23103977,13316479,9739013,-16149481,817875,-15038942,8965339,-14088058,-30714912,16193877 }, + }, + { + { -33521811,3180713,-2394130,14003687,-16903474,-16270840,17238398,4729455,-18074513,9256800 }, + { -25182317,-4174131,32336398,5036987,-21236817,11360617,22616405,9761698,-19827198,630305 }, + { -13720693,2639453,-24237460,-7406481,9494427,-5774029,-6554551,-15960994,-2449256,-14291300 }, + }, + { + { -3151181,-5046075,9282714,6866145,-31907062,-863023,-18940575,15033784,25105118,-7894876 }, + { -24326370,15950226,-31801215,-14592823,-11662737,-5090925,1573892,-2625887,2198790,-15804619 }, + { -3099351,10324967,-2241613,7453183,-5446979,-2735503,-13812022,-16236442,-32461234,-12290683 }, + }, diff --git a/Sources/libsignal/curve25519/ed25519/d.h b/Sources/libsignal/curve25519/ed25519/d.h new file mode 100755 index 0000000..e25f578 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/d.h @@ -0,0 +1 @@ +-10913610,13857413,-15372611,6949391,114729,-8787816,-6275908,-3247719,-18696448,-12055116 diff --git a/Sources/libsignal/curve25519/ed25519/d2.h b/Sources/libsignal/curve25519/ed25519/d2.h new file mode 100755 index 0000000..01aaec7 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/d2.h @@ -0,0 +1 @@ +-21827239,-5839606,-30745221,13898782,229458,15978800,-12551817,-6495438,29715968,9444199 diff --git a/Sources/libsignal/curve25519/ed25519/fe.h b/Sources/libsignal/curve25519/ed25519/fe.h new file mode 100755 index 0000000..60c308b --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe.h @@ -0,0 +1,56 @@ +#ifndef FE_H +#define FE_H + +#include "crypto_int32.h" + +typedef crypto_int32 fe[10]; + +/* +fe means field element. +Here the field is \Z/(2^255-19). +An element t, entries t[0]...t[9], represents the integer +t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9]. +Bounds on each t[i] vary depending on context. +*/ + +#define fe_frombytes crypto_sign_ed25519_ref10_fe_frombytes +#define fe_tobytes crypto_sign_ed25519_ref10_fe_tobytes +#define fe_copy crypto_sign_ed25519_ref10_fe_copy +#define fe_isnonzero crypto_sign_ed25519_ref10_fe_isnonzero +#define fe_isnegative crypto_sign_ed25519_ref10_fe_isnegative +#define fe_0 crypto_sign_ed25519_ref10_fe_0 +#define fe_1 crypto_sign_ed25519_ref10_fe_1 +#define fe_cswap crypto_sign_ed25519_ref10_fe_cswap +#define fe_cmov crypto_sign_ed25519_ref10_fe_cmov +#define fe_add crypto_sign_ed25519_ref10_fe_add +#define fe_sub crypto_sign_ed25519_ref10_fe_sub +#define fe_neg crypto_sign_ed25519_ref10_fe_neg +#define fe_mul crypto_sign_ed25519_ref10_fe_mul +#define fe_sq crypto_sign_ed25519_ref10_fe_sq +#define fe_sq2 crypto_sign_ed25519_ref10_fe_sq2 +#define fe_mul121666 crypto_sign_ed25519_ref10_fe_mul121666 +#define fe_invert crypto_sign_ed25519_ref10_fe_invert +#define fe_pow22523 crypto_sign_ed25519_ref10_fe_pow22523 + +extern void fe_frombytes(fe,const unsigned char *); +extern void fe_tobytes(unsigned char *,const fe); + +extern void fe_copy(fe,const fe); +extern int fe_isnonzero(const fe); +extern int fe_isnegative(const fe); +extern void fe_0(fe); +extern void fe_1(fe); +extern void fe_cswap(fe,fe,unsigned int); +extern void fe_cmov(fe,const fe,unsigned int); + +extern void fe_add(fe,const fe,const fe); +extern void fe_sub(fe,const fe,const fe); +extern void fe_neg(fe,const fe); +extern void fe_mul(fe,const fe,const fe); +extern void fe_sq(fe,const fe); +extern void fe_sq2(fe,const fe); +extern void fe_mul121666(fe,const fe); +extern void fe_invert(fe,const fe); +extern void fe_pow22523(fe,const fe); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/fe_0.c b/Sources/libsignal/curve25519/ed25519/fe_0.c new file mode 100755 index 0000000..ec879d7 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_0.c @@ -0,0 +1,19 @@ +#include "fe.h" + +/* +h = 0 +*/ + +void fe_0(fe h) +{ + h[0] = 0; + h[1] = 0; + h[2] = 0; + h[3] = 0; + h[4] = 0; + h[5] = 0; + h[6] = 0; + h[7] = 0; + h[8] = 0; + h[9] = 0; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_1.c b/Sources/libsignal/curve25519/ed25519/fe_1.c new file mode 100755 index 0000000..8cf7784 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_1.c @@ -0,0 +1,19 @@ +#include "fe.h" + +/* +h = 1 +*/ + +void fe_1(fe h) +{ + h[0] = 1; + h[1] = 0; + h[2] = 0; + h[3] = 0; + h[4] = 0; + h[5] = 0; + h[6] = 0; + h[7] = 0; + h[8] = 0; + h[9] = 0; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_add.c b/Sources/libsignal/curve25519/ed25519/fe_add.c new file mode 100755 index 0000000..e6a81da --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_add.c @@ -0,0 +1,57 @@ +#include "fe.h" + +/* +h = f + g +Can overlap h with f or g. + +Preconditions: + |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + +Postconditions: + |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +*/ + +void fe_add(fe h,const fe f,const fe g) +{ + crypto_int32 f0 = f[0]; + crypto_int32 f1 = f[1]; + crypto_int32 f2 = f[2]; + crypto_int32 f3 = f[3]; + crypto_int32 f4 = f[4]; + crypto_int32 f5 = f[5]; + crypto_int32 f6 = f[6]; + crypto_int32 f7 = f[7]; + crypto_int32 f8 = f[8]; + crypto_int32 f9 = f[9]; + crypto_int32 g0 = g[0]; + crypto_int32 g1 = g[1]; + crypto_int32 g2 = g[2]; + crypto_int32 g3 = g[3]; + crypto_int32 g4 = g[4]; + crypto_int32 g5 = g[5]; + crypto_int32 g6 = g[6]; + crypto_int32 g7 = g[7]; + crypto_int32 g8 = g[8]; + crypto_int32 g9 = g[9]; + crypto_int32 h0 = f0 + g0; + crypto_int32 h1 = f1 + g1; + crypto_int32 h2 = f2 + g2; + crypto_int32 h3 = f3 + g3; + crypto_int32 h4 = f4 + g4; + crypto_int32 h5 = f5 + g5; + crypto_int32 h6 = f6 + g6; + crypto_int32 h7 = f7 + g7; + crypto_int32 h8 = f8 + g8; + crypto_int32 h9 = f9 + g9; + h[0] = h0; + h[1] = h1; + h[2] = h2; + h[3] = h3; + h[4] = h4; + h[5] = h5; + h[6] = h6; + h[7] = h7; + h[8] = h8; + h[9] = h9; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_cmov.c b/Sources/libsignal/curve25519/ed25519/fe_cmov.c new file mode 100755 index 0000000..8ca584f --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_cmov.c @@ -0,0 +1,63 @@ +#include "fe.h" + +/* +Replace (f,g) with (g,g) if b == 1; +replace (f,g) with (f,g) if b == 0. + +Preconditions: b in {0,1}. +*/ + +void fe_cmov(fe f,const fe g,unsigned int b) +{ + crypto_int32 f0 = f[0]; + crypto_int32 f1 = f[1]; + crypto_int32 f2 = f[2]; + crypto_int32 f3 = f[3]; + crypto_int32 f4 = f[4]; + crypto_int32 f5 = f[5]; + crypto_int32 f6 = f[6]; + crypto_int32 f7 = f[7]; + crypto_int32 f8 = f[8]; + crypto_int32 f9 = f[9]; + crypto_int32 g0 = g[0]; + crypto_int32 g1 = g[1]; + crypto_int32 g2 = g[2]; + crypto_int32 g3 = g[3]; + crypto_int32 g4 = g[4]; + crypto_int32 g5 = g[5]; + crypto_int32 g6 = g[6]; + crypto_int32 g7 = g[7]; + crypto_int32 g8 = g[8]; + crypto_int32 g9 = g[9]; + crypto_int32 x0 = f0 ^ g0; + crypto_int32 x1 = f1 ^ g1; + crypto_int32 x2 = f2 ^ g2; + crypto_int32 x3 = f3 ^ g3; + crypto_int32 x4 = f4 ^ g4; + crypto_int32 x5 = f5 ^ g5; + crypto_int32 x6 = f6 ^ g6; + crypto_int32 x7 = f7 ^ g7; + crypto_int32 x8 = f8 ^ g8; + crypto_int32 x9 = f9 ^ g9; + b = -b; + x0 &= b; + x1 &= b; + x2 &= b; + x3 &= b; + x4 &= b; + x5 &= b; + x6 &= b; + x7 &= b; + x8 &= b; + x9 &= b; + f[0] = f0 ^ x0; + f[1] = f1 ^ x1; + f[2] = f2 ^ x2; + f[3] = f3 ^ x3; + f[4] = f4 ^ x4; + f[5] = f5 ^ x5; + f[6] = f6 ^ x6; + f[7] = f7 ^ x7; + f[8] = f8 ^ x8; + f[9] = f9 ^ x9; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_copy.c b/Sources/libsignal/curve25519/ed25519/fe_copy.c new file mode 100755 index 0000000..9c5bf86 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_copy.c @@ -0,0 +1,29 @@ +#include "fe.h" + +/* +h = f +*/ + +void fe_copy(fe h,const fe f) +{ + crypto_int32 f0 = f[0]; + crypto_int32 f1 = f[1]; + crypto_int32 f2 = f[2]; + crypto_int32 f3 = f[3]; + crypto_int32 f4 = f[4]; + crypto_int32 f5 = f[5]; + crypto_int32 f6 = f[6]; + crypto_int32 f7 = f[7]; + crypto_int32 f8 = f[8]; + crypto_int32 f9 = f[9]; + h[0] = f0; + h[1] = f1; + h[2] = f2; + h[3] = f3; + h[4] = f4; + h[5] = f5; + h[6] = f6; + h[7] = f7; + h[8] = f8; + h[9] = f9; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_frombytes.c b/Sources/libsignal/curve25519/ed25519/fe_frombytes.c new file mode 100755 index 0000000..5c17917 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_frombytes.c @@ -0,0 +1,73 @@ +#include "fe.h" +#include "crypto_int64.h" +#include "crypto_uint64.h" + +static crypto_uint64 load_3(const unsigned char *in) +{ + crypto_uint64 result; + result = (crypto_uint64) in[0]; + result |= ((crypto_uint64) in[1]) << 8; + result |= ((crypto_uint64) in[2]) << 16; + return result; +} + +static crypto_uint64 load_4(const unsigned char *in) +{ + crypto_uint64 result; + result = (crypto_uint64) in[0]; + result |= ((crypto_uint64) in[1]) << 8; + result |= ((crypto_uint64) in[2]) << 16; + result |= ((crypto_uint64) in[3]) << 24; + return result; +} + +/* +Ignores top bit of h. +*/ + +void fe_frombytes(fe h,const unsigned char *s) +{ + crypto_int64 h0 = load_4(s); + crypto_int64 h1 = load_3(s + 4) << 6; + crypto_int64 h2 = load_3(s + 7) << 5; + crypto_int64 h3 = load_3(s + 10) << 3; + crypto_int64 h4 = load_3(s + 13) << 2; + crypto_int64 h5 = load_4(s + 16); + crypto_int64 h6 = load_3(s + 20) << 7; + crypto_int64 h7 = load_3(s + 23) << 5; + crypto_int64 h8 = load_3(s + 26) << 4; + crypto_int64 h9 = (load_3(s + 29) & 8388607) << 2; + crypto_int64 carry0; + crypto_int64 carry1; + crypto_int64 carry2; + crypto_int64 carry3; + crypto_int64 carry4; + crypto_int64 carry5; + crypto_int64 carry6; + crypto_int64 carry7; + crypto_int64 carry8; + crypto_int64 carry9; + + carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25; + carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25; + carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25; + carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25; + carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25; + + carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26; + carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26; + carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26; + + h[0] = h0; + h[1] = h1; + h[2] = h2; + h[3] = h3; + h[4] = h4; + h[5] = h5; + h[6] = h6; + h[7] = h7; + h[8] = h8; + h[9] = h9; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_invert.c b/Sources/libsignal/curve25519/ed25519/fe_invert.c new file mode 100755 index 0000000..bcfdb8f --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_invert.c @@ -0,0 +1,14 @@ +#include "fe.h" + +void fe_invert(fe out,const fe z) +{ + fe t0; + fe t1; + fe t2; + fe t3; + int i; + +#include "pow225521.h" + + return; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_isnegative.c b/Sources/libsignal/curve25519/ed25519/fe_isnegative.c new file mode 100755 index 0000000..3b2c8b8 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_isnegative.c @@ -0,0 +1,16 @@ +#include "fe.h" + +/* +return 1 if f is in {1,3,5,...,q-2} +return 0 if f is in {0,2,4,...,q-1} + +Preconditions: + |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +*/ + +int fe_isnegative(const fe f) +{ + unsigned char s[32]; + fe_tobytes(s,f); + return s[0] & 1; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_isnonzero.c b/Sources/libsignal/curve25519/ed25519/fe_isnonzero.c new file mode 100755 index 0000000..0e087a7 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_isnonzero.c @@ -0,0 +1,28 @@ +#include "fe.h" +#include "crypto_verify_32.h" + +/* +return nonzero if f == 0 +return 0 if f != 0 + +Preconditions: + |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +*/ + +/* TREVOR'S COMMENT + * + * I think the above comment is wrong. Instead: + * + * return 0 if f == 0 + * return -1 if f != 0 + * + * */ + +static const unsigned char zero[32]; + +int fe_isnonzero(const fe f) +{ + unsigned char s[32]; + fe_tobytes(s,f); + return crypto_verify_32(s,zero); +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_mul.c b/Sources/libsignal/curve25519/ed25519/fe_mul.c new file mode 100755 index 0000000..26ca8b3 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_mul.c @@ -0,0 +1,253 @@ +#include "fe.h" +#include "crypto_int64.h" + +/* +h = f * g +Can overlap h with f or g. + +Preconditions: + |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. + |g| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. + +Postconditions: + |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc. +*/ + +/* +Notes on implementation strategy: + +Using schoolbook multiplication. +Karatsuba would save a little in some cost models. + +Most multiplications by 2 and 19 are 32-bit precomputations; +cheaper than 64-bit postcomputations. + +There is one remaining multiplication by 19 in the carry chain; +one *19 precomputation can be merged into this, +but the resulting data flow is considerably less clean. + +There are 12 carries below. +10 of them are 2-way parallelizable and vectorizable. +Can get away with 11 carries, but then data flow is much deeper. + +With tighter constraints on inputs can squeeze carries into int32. +*/ + +void fe_mul(fe h,const fe f,const fe g) +{ + crypto_int32 f0 = f[0]; + crypto_int32 f1 = f[1]; + crypto_int32 f2 = f[2]; + crypto_int32 f3 = f[3]; + crypto_int32 f4 = f[4]; + crypto_int32 f5 = f[5]; + crypto_int32 f6 = f[6]; + crypto_int32 f7 = f[7]; + crypto_int32 f8 = f[8]; + crypto_int32 f9 = f[9]; + crypto_int32 g0 = g[0]; + crypto_int32 g1 = g[1]; + crypto_int32 g2 = g[2]; + crypto_int32 g3 = g[3]; + crypto_int32 g4 = g[4]; + crypto_int32 g5 = g[5]; + crypto_int32 g6 = g[6]; + crypto_int32 g7 = g[7]; + crypto_int32 g8 = g[8]; + crypto_int32 g9 = g[9]; + crypto_int32 g1_19 = 19 * g1; /* 1.959375*2^29 */ + crypto_int32 g2_19 = 19 * g2; /* 1.959375*2^30; still ok */ + crypto_int32 g3_19 = 19 * g3; + crypto_int32 g4_19 = 19 * g4; + crypto_int32 g5_19 = 19 * g5; + crypto_int32 g6_19 = 19 * g6; + crypto_int32 g7_19 = 19 * g7; + crypto_int32 g8_19 = 19 * g8; + crypto_int32 g9_19 = 19 * g9; + crypto_int32 f1_2 = 2 * f1; + crypto_int32 f3_2 = 2 * f3; + crypto_int32 f5_2 = 2 * f5; + crypto_int32 f7_2 = 2 * f7; + crypto_int32 f9_2 = 2 * f9; + crypto_int64 f0g0 = f0 * (crypto_int64) g0; + crypto_int64 f0g1 = f0 * (crypto_int64) g1; + crypto_int64 f0g2 = f0 * (crypto_int64) g2; + crypto_int64 f0g3 = f0 * (crypto_int64) g3; + crypto_int64 f0g4 = f0 * (crypto_int64) g4; + crypto_int64 f0g5 = f0 * (crypto_int64) g5; + crypto_int64 f0g6 = f0 * (crypto_int64) g6; + crypto_int64 f0g7 = f0 * (crypto_int64) g7; + crypto_int64 f0g8 = f0 * (crypto_int64) g8; + crypto_int64 f0g9 = f0 * (crypto_int64) g9; + crypto_int64 f1g0 = f1 * (crypto_int64) g0; + crypto_int64 f1g1_2 = f1_2 * (crypto_int64) g1; + crypto_int64 f1g2 = f1 * (crypto_int64) g2; + crypto_int64 f1g3_2 = f1_2 * (crypto_int64) g3; + crypto_int64 f1g4 = f1 * (crypto_int64) g4; + crypto_int64 f1g5_2 = f1_2 * (crypto_int64) g5; + crypto_int64 f1g6 = f1 * (crypto_int64) g6; + crypto_int64 f1g7_2 = f1_2 * (crypto_int64) g7; + crypto_int64 f1g8 = f1 * (crypto_int64) g8; + crypto_int64 f1g9_38 = f1_2 * (crypto_int64) g9_19; + crypto_int64 f2g0 = f2 * (crypto_int64) g0; + crypto_int64 f2g1 = f2 * (crypto_int64) g1; + crypto_int64 f2g2 = f2 * (crypto_int64) g2; + crypto_int64 f2g3 = f2 * (crypto_int64) g3; + crypto_int64 f2g4 = f2 * (crypto_int64) g4; + crypto_int64 f2g5 = f2 * (crypto_int64) g5; + crypto_int64 f2g6 = f2 * (crypto_int64) g6; + crypto_int64 f2g7 = f2 * (crypto_int64) g7; + crypto_int64 f2g8_19 = f2 * (crypto_int64) g8_19; + crypto_int64 f2g9_19 = f2 * (crypto_int64) g9_19; + crypto_int64 f3g0 = f3 * (crypto_int64) g0; + crypto_int64 f3g1_2 = f3_2 * (crypto_int64) g1; + crypto_int64 f3g2 = f3 * (crypto_int64) g2; + crypto_int64 f3g3_2 = f3_2 * (crypto_int64) g3; + crypto_int64 f3g4 = f3 * (crypto_int64) g4; + crypto_int64 f3g5_2 = f3_2 * (crypto_int64) g5; + crypto_int64 f3g6 = f3 * (crypto_int64) g6; + crypto_int64 f3g7_38 = f3_2 * (crypto_int64) g7_19; + crypto_int64 f3g8_19 = f3 * (crypto_int64) g8_19; + crypto_int64 f3g9_38 = f3_2 * (crypto_int64) g9_19; + crypto_int64 f4g0 = f4 * (crypto_int64) g0; + crypto_int64 f4g1 = f4 * (crypto_int64) g1; + crypto_int64 f4g2 = f4 * (crypto_int64) g2; + crypto_int64 f4g3 = f4 * (crypto_int64) g3; + crypto_int64 f4g4 = f4 * (crypto_int64) g4; + crypto_int64 f4g5 = f4 * (crypto_int64) g5; + crypto_int64 f4g6_19 = f4 * (crypto_int64) g6_19; + crypto_int64 f4g7_19 = f4 * (crypto_int64) g7_19; + crypto_int64 f4g8_19 = f4 * (crypto_int64) g8_19; + crypto_int64 f4g9_19 = f4 * (crypto_int64) g9_19; + crypto_int64 f5g0 = f5 * (crypto_int64) g0; + crypto_int64 f5g1_2 = f5_2 * (crypto_int64) g1; + crypto_int64 f5g2 = f5 * (crypto_int64) g2; + crypto_int64 f5g3_2 = f5_2 * (crypto_int64) g3; + crypto_int64 f5g4 = f5 * (crypto_int64) g4; + crypto_int64 f5g5_38 = f5_2 * (crypto_int64) g5_19; + crypto_int64 f5g6_19 = f5 * (crypto_int64) g6_19; + crypto_int64 f5g7_38 = f5_2 * (crypto_int64) g7_19; + crypto_int64 f5g8_19 = f5 * (crypto_int64) g8_19; + crypto_int64 f5g9_38 = f5_2 * (crypto_int64) g9_19; + crypto_int64 f6g0 = f6 * (crypto_int64) g0; + crypto_int64 f6g1 = f6 * (crypto_int64) g1; + crypto_int64 f6g2 = f6 * (crypto_int64) g2; + crypto_int64 f6g3 = f6 * (crypto_int64) g3; + crypto_int64 f6g4_19 = f6 * (crypto_int64) g4_19; + crypto_int64 f6g5_19 = f6 * (crypto_int64) g5_19; + crypto_int64 f6g6_19 = f6 * (crypto_int64) g6_19; + crypto_int64 f6g7_19 = f6 * (crypto_int64) g7_19; + crypto_int64 f6g8_19 = f6 * (crypto_int64) g8_19; + crypto_int64 f6g9_19 = f6 * (crypto_int64) g9_19; + crypto_int64 f7g0 = f7 * (crypto_int64) g0; + crypto_int64 f7g1_2 = f7_2 * (crypto_int64) g1; + crypto_int64 f7g2 = f7 * (crypto_int64) g2; + crypto_int64 f7g3_38 = f7_2 * (crypto_int64) g3_19; + crypto_int64 f7g4_19 = f7 * (crypto_int64) g4_19; + crypto_int64 f7g5_38 = f7_2 * (crypto_int64) g5_19; + crypto_int64 f7g6_19 = f7 * (crypto_int64) g6_19; + crypto_int64 f7g7_38 = f7_2 * (crypto_int64) g7_19; + crypto_int64 f7g8_19 = f7 * (crypto_int64) g8_19; + crypto_int64 f7g9_38 = f7_2 * (crypto_int64) g9_19; + crypto_int64 f8g0 = f8 * (crypto_int64) g0; + crypto_int64 f8g1 = f8 * (crypto_int64) g1; + crypto_int64 f8g2_19 = f8 * (crypto_int64) g2_19; + crypto_int64 f8g3_19 = f8 * (crypto_int64) g3_19; + crypto_int64 f8g4_19 = f8 * (crypto_int64) g4_19; + crypto_int64 f8g5_19 = f8 * (crypto_int64) g5_19; + crypto_int64 f8g6_19 = f8 * (crypto_int64) g6_19; + crypto_int64 f8g7_19 = f8 * (crypto_int64) g7_19; + crypto_int64 f8g8_19 = f8 * (crypto_int64) g8_19; + crypto_int64 f8g9_19 = f8 * (crypto_int64) g9_19; + crypto_int64 f9g0 = f9 * (crypto_int64) g0; + crypto_int64 f9g1_38 = f9_2 * (crypto_int64) g1_19; + crypto_int64 f9g2_19 = f9 * (crypto_int64) g2_19; + crypto_int64 f9g3_38 = f9_2 * (crypto_int64) g3_19; + crypto_int64 f9g4_19 = f9 * (crypto_int64) g4_19; + crypto_int64 f9g5_38 = f9_2 * (crypto_int64) g5_19; + crypto_int64 f9g6_19 = f9 * (crypto_int64) g6_19; + crypto_int64 f9g7_38 = f9_2 * (crypto_int64) g7_19; + crypto_int64 f9g8_19 = f9 * (crypto_int64) g8_19; + crypto_int64 f9g9_38 = f9_2 * (crypto_int64) g9_19; + crypto_int64 h0 = f0g0+f1g9_38+f2g8_19+f3g7_38+f4g6_19+f5g5_38+f6g4_19+f7g3_38+f8g2_19+f9g1_38; + crypto_int64 h1 = f0g1+f1g0 +f2g9_19+f3g8_19+f4g7_19+f5g6_19+f6g5_19+f7g4_19+f8g3_19+f9g2_19; + crypto_int64 h2 = f0g2+f1g1_2 +f2g0 +f3g9_38+f4g8_19+f5g7_38+f6g6_19+f7g5_38+f8g4_19+f9g3_38; + crypto_int64 h3 = f0g3+f1g2 +f2g1 +f3g0 +f4g9_19+f5g8_19+f6g7_19+f7g6_19+f8g5_19+f9g4_19; + crypto_int64 h4 = f0g4+f1g3_2 +f2g2 +f3g1_2 +f4g0 +f5g9_38+f6g8_19+f7g7_38+f8g6_19+f9g5_38; + crypto_int64 h5 = f0g5+f1g4 +f2g3 +f3g2 +f4g1 +f5g0 +f6g9_19+f7g8_19+f8g7_19+f9g6_19; + crypto_int64 h6 = f0g6+f1g5_2 +f2g4 +f3g3_2 +f4g2 +f5g1_2 +f6g0 +f7g9_38+f8g8_19+f9g7_38; + crypto_int64 h7 = f0g7+f1g6 +f2g5 +f3g4 +f4g3 +f5g2 +f6g1 +f7g0 +f8g9_19+f9g8_19; + crypto_int64 h8 = f0g8+f1g7_2 +f2g6 +f3g5_2 +f4g4 +f5g3_2 +f6g2 +f7g1_2 +f8g0 +f9g9_38; + crypto_int64 h9 = f0g9+f1g8 +f2g7 +f3g6 +f4g5 +f5g4 +f6g3 +f7g2 +f8g1 +f9g0 ; + crypto_int64 carry0; + crypto_int64 carry1; + crypto_int64 carry2; + crypto_int64 carry3; + crypto_int64 carry4; + crypto_int64 carry5; + crypto_int64 carry6; + crypto_int64 carry7; + crypto_int64 carry8; + crypto_int64 carry9; + + /* + |h0| <= (1.65*1.65*2^52*(1+19+19+19+19)+1.65*1.65*2^50*(38+38+38+38+38)) + i.e. |h0| <= 1.4*2^60; narrower ranges for h2, h4, h6, h8 + |h1| <= (1.65*1.65*2^51*(1+1+19+19+19+19+19+19+19+19)) + i.e. |h1| <= 1.7*2^59; narrower ranges for h3, h5, h7, h9 + */ + + carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + /* |h0| <= 2^25 */ + /* |h4| <= 2^25 */ + /* |h1| <= 1.71*2^59 */ + /* |h5| <= 1.71*2^59 */ + + carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25; + carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25; + /* |h1| <= 2^24; from now on fits into int32 */ + /* |h5| <= 2^24; from now on fits into int32 */ + /* |h2| <= 1.41*2^60 */ + /* |h6| <= 1.41*2^60 */ + + carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26; + carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26; + /* |h2| <= 2^25; from now on fits into int32 unchanged */ + /* |h6| <= 2^25; from now on fits into int32 unchanged */ + /* |h3| <= 1.71*2^59 */ + /* |h7| <= 1.71*2^59 */ + + carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25; + carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25; + /* |h3| <= 2^24; from now on fits into int32 unchanged */ + /* |h7| <= 2^24; from now on fits into int32 unchanged */ + /* |h4| <= 1.72*2^34 */ + /* |h8| <= 1.41*2^60 */ + + carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26; + /* |h4| <= 2^25; from now on fits into int32 unchanged */ + /* |h8| <= 2^25; from now on fits into int32 unchanged */ + /* |h5| <= 1.01*2^24 */ + /* |h9| <= 1.71*2^59 */ + + carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25; + /* |h9| <= 2^24; from now on fits into int32 unchanged */ + /* |h0| <= 1.1*2^39 */ + + carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + /* |h0| <= 2^25; from now on fits into int32 unchanged */ + /* |h1| <= 1.01*2^24 */ + + h[0] = h0; + h[1] = h1; + h[2] = h2; + h[3] = h3; + h[4] = h4; + h[5] = h5; + h[6] = h6; + h[7] = h7; + h[8] = h8; + h[9] = h9; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_neg.c b/Sources/libsignal/curve25519/ed25519/fe_neg.c new file mode 100755 index 0000000..2078ce5 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_neg.c @@ -0,0 +1,45 @@ +#include "fe.h" + +/* +h = -f + +Preconditions: + |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + +Postconditions: + |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +*/ + +void fe_neg(fe h,const fe f) +{ + crypto_int32 f0 = f[0]; + crypto_int32 f1 = f[1]; + crypto_int32 f2 = f[2]; + crypto_int32 f3 = f[3]; + crypto_int32 f4 = f[4]; + crypto_int32 f5 = f[5]; + crypto_int32 f6 = f[6]; + crypto_int32 f7 = f[7]; + crypto_int32 f8 = f[8]; + crypto_int32 f9 = f[9]; + crypto_int32 h0 = -f0; + crypto_int32 h1 = -f1; + crypto_int32 h2 = -f2; + crypto_int32 h3 = -f3; + crypto_int32 h4 = -f4; + crypto_int32 h5 = -f5; + crypto_int32 h6 = -f6; + crypto_int32 h7 = -f7; + crypto_int32 h8 = -f8; + crypto_int32 h9 = -f9; + h[0] = h0; + h[1] = h1; + h[2] = h2; + h[3] = h3; + h[4] = h4; + h[5] = h5; + h[6] = h6; + h[7] = h7; + h[8] = h8; + h[9] = h9; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_pow22523.c b/Sources/libsignal/curve25519/ed25519/fe_pow22523.c new file mode 100755 index 0000000..56675a5 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_pow22523.c @@ -0,0 +1,13 @@ +#include "fe.h" + +void fe_pow22523(fe out,const fe z) +{ + fe t0; + fe t1; + fe t2; + int i; + +#include "pow22523.h" + + return; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_sq.c b/Sources/libsignal/curve25519/ed25519/fe_sq.c new file mode 100755 index 0000000..8dd1198 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_sq.c @@ -0,0 +1,149 @@ +#include "fe.h" +#include "crypto_int64.h" + +/* +h = f * f +Can overlap h with f. + +Preconditions: + |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. + +Postconditions: + |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc. +*/ + +/* +See fe_mul.c for discussion of implementation strategy. +*/ + +void fe_sq(fe h,const fe f) +{ + crypto_int32 f0 = f[0]; + crypto_int32 f1 = f[1]; + crypto_int32 f2 = f[2]; + crypto_int32 f3 = f[3]; + crypto_int32 f4 = f[4]; + crypto_int32 f5 = f[5]; + crypto_int32 f6 = f[6]; + crypto_int32 f7 = f[7]; + crypto_int32 f8 = f[8]; + crypto_int32 f9 = f[9]; + crypto_int32 f0_2 = 2 * f0; + crypto_int32 f1_2 = 2 * f1; + crypto_int32 f2_2 = 2 * f2; + crypto_int32 f3_2 = 2 * f3; + crypto_int32 f4_2 = 2 * f4; + crypto_int32 f5_2 = 2 * f5; + crypto_int32 f6_2 = 2 * f6; + crypto_int32 f7_2 = 2 * f7; + crypto_int32 f5_38 = 38 * f5; /* 1.959375*2^30 */ + crypto_int32 f6_19 = 19 * f6; /* 1.959375*2^30 */ + crypto_int32 f7_38 = 38 * f7; /* 1.959375*2^30 */ + crypto_int32 f8_19 = 19 * f8; /* 1.959375*2^30 */ + crypto_int32 f9_38 = 38 * f9; /* 1.959375*2^30 */ + crypto_int64 f0f0 = f0 * (crypto_int64) f0; + crypto_int64 f0f1_2 = f0_2 * (crypto_int64) f1; + crypto_int64 f0f2_2 = f0_2 * (crypto_int64) f2; + crypto_int64 f0f3_2 = f0_2 * (crypto_int64) f3; + crypto_int64 f0f4_2 = f0_2 * (crypto_int64) f4; + crypto_int64 f0f5_2 = f0_2 * (crypto_int64) f5; + crypto_int64 f0f6_2 = f0_2 * (crypto_int64) f6; + crypto_int64 f0f7_2 = f0_2 * (crypto_int64) f7; + crypto_int64 f0f8_2 = f0_2 * (crypto_int64) f8; + crypto_int64 f0f9_2 = f0_2 * (crypto_int64) f9; + crypto_int64 f1f1_2 = f1_2 * (crypto_int64) f1; + crypto_int64 f1f2_2 = f1_2 * (crypto_int64) f2; + crypto_int64 f1f3_4 = f1_2 * (crypto_int64) f3_2; + crypto_int64 f1f4_2 = f1_2 * (crypto_int64) f4; + crypto_int64 f1f5_4 = f1_2 * (crypto_int64) f5_2; + crypto_int64 f1f6_2 = f1_2 * (crypto_int64) f6; + crypto_int64 f1f7_4 = f1_2 * (crypto_int64) f7_2; + crypto_int64 f1f8_2 = f1_2 * (crypto_int64) f8; + crypto_int64 f1f9_76 = f1_2 * (crypto_int64) f9_38; + crypto_int64 f2f2 = f2 * (crypto_int64) f2; + crypto_int64 f2f3_2 = f2_2 * (crypto_int64) f3; + crypto_int64 f2f4_2 = f2_2 * (crypto_int64) f4; + crypto_int64 f2f5_2 = f2_2 * (crypto_int64) f5; + crypto_int64 f2f6_2 = f2_2 * (crypto_int64) f6; + crypto_int64 f2f7_2 = f2_2 * (crypto_int64) f7; + crypto_int64 f2f8_38 = f2_2 * (crypto_int64) f8_19; + crypto_int64 f2f9_38 = f2 * (crypto_int64) f9_38; + crypto_int64 f3f3_2 = f3_2 * (crypto_int64) f3; + crypto_int64 f3f4_2 = f3_2 * (crypto_int64) f4; + crypto_int64 f3f5_4 = f3_2 * (crypto_int64) f5_2; + crypto_int64 f3f6_2 = f3_2 * (crypto_int64) f6; + crypto_int64 f3f7_76 = f3_2 * (crypto_int64) f7_38; + crypto_int64 f3f8_38 = f3_2 * (crypto_int64) f8_19; + crypto_int64 f3f9_76 = f3_2 * (crypto_int64) f9_38; + crypto_int64 f4f4 = f4 * (crypto_int64) f4; + crypto_int64 f4f5_2 = f4_2 * (crypto_int64) f5; + crypto_int64 f4f6_38 = f4_2 * (crypto_int64) f6_19; + crypto_int64 f4f7_38 = f4 * (crypto_int64) f7_38; + crypto_int64 f4f8_38 = f4_2 * (crypto_int64) f8_19; + crypto_int64 f4f9_38 = f4 * (crypto_int64) f9_38; + crypto_int64 f5f5_38 = f5 * (crypto_int64) f5_38; + crypto_int64 f5f6_38 = f5_2 * (crypto_int64) f6_19; + crypto_int64 f5f7_76 = f5_2 * (crypto_int64) f7_38; + crypto_int64 f5f8_38 = f5_2 * (crypto_int64) f8_19; + crypto_int64 f5f9_76 = f5_2 * (crypto_int64) f9_38; + crypto_int64 f6f6_19 = f6 * (crypto_int64) f6_19; + crypto_int64 f6f7_38 = f6 * (crypto_int64) f7_38; + crypto_int64 f6f8_38 = f6_2 * (crypto_int64) f8_19; + crypto_int64 f6f9_38 = f6 * (crypto_int64) f9_38; + crypto_int64 f7f7_38 = f7 * (crypto_int64) f7_38; + crypto_int64 f7f8_38 = f7_2 * (crypto_int64) f8_19; + crypto_int64 f7f9_76 = f7_2 * (crypto_int64) f9_38; + crypto_int64 f8f8_19 = f8 * (crypto_int64) f8_19; + crypto_int64 f8f9_38 = f8 * (crypto_int64) f9_38; + crypto_int64 f9f9_38 = f9 * (crypto_int64) f9_38; + crypto_int64 h0 = f0f0 +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38; + crypto_int64 h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38; + crypto_int64 h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19; + crypto_int64 h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38; + crypto_int64 h4 = f0f4_2+f1f3_4 +f2f2 +f5f9_76+f6f8_38+f7f7_38; + crypto_int64 h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38; + crypto_int64 h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19; + crypto_int64 h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38; + crypto_int64 h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4 +f9f9_38; + crypto_int64 h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2; + crypto_int64 carry0; + crypto_int64 carry1; + crypto_int64 carry2; + crypto_int64 carry3; + crypto_int64 carry4; + crypto_int64 carry5; + crypto_int64 carry6; + crypto_int64 carry7; + crypto_int64 carry8; + crypto_int64 carry9; + + carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + + carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25; + carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25; + + carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26; + carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26; + + carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25; + carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25; + + carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26; + + carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25; + + carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + + h[0] = h0; + h[1] = h1; + h[2] = h2; + h[3] = h3; + h[4] = h4; + h[5] = h5; + h[6] = h6; + h[7] = h7; + h[8] = h8; + h[9] = h9; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_sq2.c b/Sources/libsignal/curve25519/ed25519/fe_sq2.c new file mode 100755 index 0000000..026ed3a --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_sq2.c @@ -0,0 +1,160 @@ +#include "fe.h" +#include "crypto_int64.h" + +/* +h = 2 * f * f +Can overlap h with f. + +Preconditions: + |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. + +Postconditions: + |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc. +*/ + +/* +See fe_mul.c for discussion of implementation strategy. +*/ + +void fe_sq2(fe h,const fe f) +{ + crypto_int32 f0 = f[0]; + crypto_int32 f1 = f[1]; + crypto_int32 f2 = f[2]; + crypto_int32 f3 = f[3]; + crypto_int32 f4 = f[4]; + crypto_int32 f5 = f[5]; + crypto_int32 f6 = f[6]; + crypto_int32 f7 = f[7]; + crypto_int32 f8 = f[8]; + crypto_int32 f9 = f[9]; + crypto_int32 f0_2 = 2 * f0; + crypto_int32 f1_2 = 2 * f1; + crypto_int32 f2_2 = 2 * f2; + crypto_int32 f3_2 = 2 * f3; + crypto_int32 f4_2 = 2 * f4; + crypto_int32 f5_2 = 2 * f5; + crypto_int32 f6_2 = 2 * f6; + crypto_int32 f7_2 = 2 * f7; + crypto_int32 f5_38 = 38 * f5; /* 1.959375*2^30 */ + crypto_int32 f6_19 = 19 * f6; /* 1.959375*2^30 */ + crypto_int32 f7_38 = 38 * f7; /* 1.959375*2^30 */ + crypto_int32 f8_19 = 19 * f8; /* 1.959375*2^30 */ + crypto_int32 f9_38 = 38 * f9; /* 1.959375*2^30 */ + crypto_int64 f0f0 = f0 * (crypto_int64) f0; + crypto_int64 f0f1_2 = f0_2 * (crypto_int64) f1; + crypto_int64 f0f2_2 = f0_2 * (crypto_int64) f2; + crypto_int64 f0f3_2 = f0_2 * (crypto_int64) f3; + crypto_int64 f0f4_2 = f0_2 * (crypto_int64) f4; + crypto_int64 f0f5_2 = f0_2 * (crypto_int64) f5; + crypto_int64 f0f6_2 = f0_2 * (crypto_int64) f6; + crypto_int64 f0f7_2 = f0_2 * (crypto_int64) f7; + crypto_int64 f0f8_2 = f0_2 * (crypto_int64) f8; + crypto_int64 f0f9_2 = f0_2 * (crypto_int64) f9; + crypto_int64 f1f1_2 = f1_2 * (crypto_int64) f1; + crypto_int64 f1f2_2 = f1_2 * (crypto_int64) f2; + crypto_int64 f1f3_4 = f1_2 * (crypto_int64) f3_2; + crypto_int64 f1f4_2 = f1_2 * (crypto_int64) f4; + crypto_int64 f1f5_4 = f1_2 * (crypto_int64) f5_2; + crypto_int64 f1f6_2 = f1_2 * (crypto_int64) f6; + crypto_int64 f1f7_4 = f1_2 * (crypto_int64) f7_2; + crypto_int64 f1f8_2 = f1_2 * (crypto_int64) f8; + crypto_int64 f1f9_76 = f1_2 * (crypto_int64) f9_38; + crypto_int64 f2f2 = f2 * (crypto_int64) f2; + crypto_int64 f2f3_2 = f2_2 * (crypto_int64) f3; + crypto_int64 f2f4_2 = f2_2 * (crypto_int64) f4; + crypto_int64 f2f5_2 = f2_2 * (crypto_int64) f5; + crypto_int64 f2f6_2 = f2_2 * (crypto_int64) f6; + crypto_int64 f2f7_2 = f2_2 * (crypto_int64) f7; + crypto_int64 f2f8_38 = f2_2 * (crypto_int64) f8_19; + crypto_int64 f2f9_38 = f2 * (crypto_int64) f9_38; + crypto_int64 f3f3_2 = f3_2 * (crypto_int64) f3; + crypto_int64 f3f4_2 = f3_2 * (crypto_int64) f4; + crypto_int64 f3f5_4 = f3_2 * (crypto_int64) f5_2; + crypto_int64 f3f6_2 = f3_2 * (crypto_int64) f6; + crypto_int64 f3f7_76 = f3_2 * (crypto_int64) f7_38; + crypto_int64 f3f8_38 = f3_2 * (crypto_int64) f8_19; + crypto_int64 f3f9_76 = f3_2 * (crypto_int64) f9_38; + crypto_int64 f4f4 = f4 * (crypto_int64) f4; + crypto_int64 f4f5_2 = f4_2 * (crypto_int64) f5; + crypto_int64 f4f6_38 = f4_2 * (crypto_int64) f6_19; + crypto_int64 f4f7_38 = f4 * (crypto_int64) f7_38; + crypto_int64 f4f8_38 = f4_2 * (crypto_int64) f8_19; + crypto_int64 f4f9_38 = f4 * (crypto_int64) f9_38; + crypto_int64 f5f5_38 = f5 * (crypto_int64) f5_38; + crypto_int64 f5f6_38 = f5_2 * (crypto_int64) f6_19; + crypto_int64 f5f7_76 = f5_2 * (crypto_int64) f7_38; + crypto_int64 f5f8_38 = f5_2 * (crypto_int64) f8_19; + crypto_int64 f5f9_76 = f5_2 * (crypto_int64) f9_38; + crypto_int64 f6f6_19 = f6 * (crypto_int64) f6_19; + crypto_int64 f6f7_38 = f6 * (crypto_int64) f7_38; + crypto_int64 f6f8_38 = f6_2 * (crypto_int64) f8_19; + crypto_int64 f6f9_38 = f6 * (crypto_int64) f9_38; + crypto_int64 f7f7_38 = f7 * (crypto_int64) f7_38; + crypto_int64 f7f8_38 = f7_2 * (crypto_int64) f8_19; + crypto_int64 f7f9_76 = f7_2 * (crypto_int64) f9_38; + crypto_int64 f8f8_19 = f8 * (crypto_int64) f8_19; + crypto_int64 f8f9_38 = f8 * (crypto_int64) f9_38; + crypto_int64 f9f9_38 = f9 * (crypto_int64) f9_38; + crypto_int64 h0 = f0f0 +f1f9_76+f2f8_38+f3f7_76+f4f6_38+f5f5_38; + crypto_int64 h1 = f0f1_2+f2f9_38+f3f8_38+f4f7_38+f5f6_38; + crypto_int64 h2 = f0f2_2+f1f1_2 +f3f9_76+f4f8_38+f5f7_76+f6f6_19; + crypto_int64 h3 = f0f3_2+f1f2_2 +f4f9_38+f5f8_38+f6f7_38; + crypto_int64 h4 = f0f4_2+f1f3_4 +f2f2 +f5f9_76+f6f8_38+f7f7_38; + crypto_int64 h5 = f0f5_2+f1f4_2 +f2f3_2 +f6f9_38+f7f8_38; + crypto_int64 h6 = f0f6_2+f1f5_4 +f2f4_2 +f3f3_2 +f7f9_76+f8f8_19; + crypto_int64 h7 = f0f7_2+f1f6_2 +f2f5_2 +f3f4_2 +f8f9_38; + crypto_int64 h8 = f0f8_2+f1f7_4 +f2f6_2 +f3f5_4 +f4f4 +f9f9_38; + crypto_int64 h9 = f0f9_2+f1f8_2 +f2f7_2 +f3f6_2 +f4f5_2; + crypto_int64 carry0; + crypto_int64 carry1; + crypto_int64 carry2; + crypto_int64 carry3; + crypto_int64 carry4; + crypto_int64 carry5; + crypto_int64 carry6; + crypto_int64 carry7; + crypto_int64 carry8; + crypto_int64 carry9; + + h0 += h0; + h1 += h1; + h2 += h2; + h3 += h3; + h4 += h4; + h5 += h5; + h6 += h6; + h7 += h7; + h8 += h8; + h9 += h9; + + carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + + carry1 = (h1 + (crypto_int64) (1<<24)) >> 25; h2 += carry1; h1 -= carry1 << 25; + carry5 = (h5 + (crypto_int64) (1<<24)) >> 25; h6 += carry5; h5 -= carry5 << 25; + + carry2 = (h2 + (crypto_int64) (1<<25)) >> 26; h3 += carry2; h2 -= carry2 << 26; + carry6 = (h6 + (crypto_int64) (1<<25)) >> 26; h7 += carry6; h6 -= carry6 << 26; + + carry3 = (h3 + (crypto_int64) (1<<24)) >> 25; h4 += carry3; h3 -= carry3 << 25; + carry7 = (h7 + (crypto_int64) (1<<24)) >> 25; h8 += carry7; h7 -= carry7 << 25; + + carry4 = (h4 + (crypto_int64) (1<<25)) >> 26; h5 += carry4; h4 -= carry4 << 26; + carry8 = (h8 + (crypto_int64) (1<<25)) >> 26; h9 += carry8; h8 -= carry8 << 26; + + carry9 = (h9 + (crypto_int64) (1<<24)) >> 25; h0 += carry9 * 19; h9 -= carry9 << 25; + + carry0 = (h0 + (crypto_int64) (1<<25)) >> 26; h1 += carry0; h0 -= carry0 << 26; + + h[0] = h0; + h[1] = h1; + h[2] = h2; + h[3] = h3; + h[4] = h4; + h[5] = h5; + h[6] = h6; + h[7] = h7; + h[8] = h8; + h[9] = h9; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_sub.c b/Sources/libsignal/curve25519/ed25519/fe_sub.c new file mode 100755 index 0000000..6e26b7d --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_sub.c @@ -0,0 +1,57 @@ +#include "fe.h" + +/* +h = f - g +Can overlap h with f or g. + +Preconditions: + |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + |g| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. + +Postconditions: + |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +*/ + +void fe_sub(fe h,const fe f,const fe g) +{ + crypto_int32 f0 = f[0]; + crypto_int32 f1 = f[1]; + crypto_int32 f2 = f[2]; + crypto_int32 f3 = f[3]; + crypto_int32 f4 = f[4]; + crypto_int32 f5 = f[5]; + crypto_int32 f6 = f[6]; + crypto_int32 f7 = f[7]; + crypto_int32 f8 = f[8]; + crypto_int32 f9 = f[9]; + crypto_int32 g0 = g[0]; + crypto_int32 g1 = g[1]; + crypto_int32 g2 = g[2]; + crypto_int32 g3 = g[3]; + crypto_int32 g4 = g[4]; + crypto_int32 g5 = g[5]; + crypto_int32 g6 = g[6]; + crypto_int32 g7 = g[7]; + crypto_int32 g8 = g[8]; + crypto_int32 g9 = g[9]; + crypto_int32 h0 = f0 - g0; + crypto_int32 h1 = f1 - g1; + crypto_int32 h2 = f2 - g2; + crypto_int32 h3 = f3 - g3; + crypto_int32 h4 = f4 - g4; + crypto_int32 h5 = f5 - g5; + crypto_int32 h6 = f6 - g6; + crypto_int32 h7 = f7 - g7; + crypto_int32 h8 = f8 - g8; + crypto_int32 h9 = f9 - g9; + h[0] = h0; + h[1] = h1; + h[2] = h2; + h[3] = h3; + h[4] = h4; + h[5] = h5; + h[6] = h6; + h[7] = h7; + h[8] = h8; + h[9] = h9; +} diff --git a/Sources/libsignal/curve25519/ed25519/fe_tobytes.c b/Sources/libsignal/curve25519/ed25519/fe_tobytes.c new file mode 100755 index 0000000..0a63baf --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/fe_tobytes.c @@ -0,0 +1,119 @@ +#include "fe.h" + +/* +Preconditions: + |h| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. + +Write p=2^255-19; q=floor(h/p). +Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))). + +Proof: + Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4. + Also have |h-2^230 h9|<2^231 so |19 2^(-255)(h-2^230 h9)|<1/4. + + Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9). + Then 0> 25; + q = (h0 + q) >> 26; + q = (h1 + q) >> 25; + q = (h2 + q) >> 26; + q = (h3 + q) >> 25; + q = (h4 + q) >> 26; + q = (h5 + q) >> 25; + q = (h6 + q) >> 26; + q = (h7 + q) >> 25; + q = (h8 + q) >> 26; + q = (h9 + q) >> 25; + + /* Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20. */ + h0 += 19 * q; + /* Goal: Output h-2^255 q, which is between 0 and 2^255-20. */ + + carry0 = h0 >> 26; h1 += carry0; h0 -= carry0 << 26; + carry1 = h1 >> 25; h2 += carry1; h1 -= carry1 << 25; + carry2 = h2 >> 26; h3 += carry2; h2 -= carry2 << 26; + carry3 = h3 >> 25; h4 += carry3; h3 -= carry3 << 25; + carry4 = h4 >> 26; h5 += carry4; h4 -= carry4 << 26; + carry5 = h5 >> 25; h6 += carry5; h5 -= carry5 << 25; + carry6 = h6 >> 26; h7 += carry6; h6 -= carry6 << 26; + carry7 = h7 >> 25; h8 += carry7; h7 -= carry7 << 25; + carry8 = h8 >> 26; h9 += carry8; h8 -= carry8 << 26; + carry9 = h9 >> 25; h9 -= carry9 << 25; + /* h10 = carry9 */ + + /* + Goal: Output h0+...+2^255 h10-2^255 q, which is between 0 and 2^255-20. + Have h0+...+2^230 h9 between 0 and 2^255-1; + evidently 2^255 h10-2^255 q = 0. + Goal: Output h0+...+2^230 h9. + */ + + s[0] = h0 >> 0; + s[1] = h0 >> 8; + s[2] = h0 >> 16; + s[3] = (h0 >> 24) | (h1 << 2); + s[4] = h1 >> 6; + s[5] = h1 >> 14; + s[6] = (h1 >> 22) | (h2 << 3); + s[7] = h2 >> 5; + s[8] = h2 >> 13; + s[9] = (h2 >> 21) | (h3 << 5); + s[10] = h3 >> 3; + s[11] = h3 >> 11; + s[12] = (h3 >> 19) | (h4 << 6); + s[13] = h4 >> 2; + s[14] = h4 >> 10; + s[15] = h4 >> 18; + s[16] = h5 >> 0; + s[17] = h5 >> 8; + s[18] = h5 >> 16; + s[19] = (h5 >> 24) | (h6 << 1); + s[20] = h6 >> 7; + s[21] = h6 >> 15; + s[22] = (h6 >> 23) | (h7 << 3); + s[23] = h7 >> 5; + s[24] = h7 >> 13; + s[25] = (h7 >> 21) | (h8 << 4); + s[26] = h8 >> 4; + s[27] = h8 >> 12; + s[28] = (h8 >> 20) | (h9 << 6); + s[29] = h9 >> 2; + s[30] = h9 >> 10; + s[31] = h9 >> 18; +} diff --git a/Sources/libsignal/curve25519/ed25519/ge.h b/Sources/libsignal/curve25519/ed25519/ge.h new file mode 100755 index 0000000..55e95f9 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge.h @@ -0,0 +1,95 @@ +#ifndef GE_H +#define GE_H + +/* +ge means group element. + +Here the group is the set of pairs (x,y) of field elements (see fe.h) +satisfying -x^2 + y^2 = 1 + d x^2y^2 +where d = -121665/121666. + +Representations: + ge_p2 (projective): (X:Y:Z) satisfying x=X/Z, y=Y/Z + ge_p3 (extended): (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT + ge_p1p1 (completed): ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T + ge_precomp (Duif): (y+x,y-x,2dxy) +*/ + +#include "fe.h" + +typedef struct { + fe X; + fe Y; + fe Z; +} ge_p2; + +typedef struct { + fe X; + fe Y; + fe Z; + fe T; +} ge_p3; + +typedef struct { + fe X; + fe Y; + fe Z; + fe T; +} ge_p1p1; + +typedef struct { + fe yplusx; + fe yminusx; + fe xy2d; +} ge_precomp; + +typedef struct { + fe YplusX; + fe YminusX; + fe Z; + fe T2d; +} ge_cached; + +#define ge_frombytes_negate_vartime crypto_sign_ed25519_ref10_ge_frombytes_negate_vartime +#define ge_tobytes crypto_sign_ed25519_ref10_ge_tobytes +#define ge_p3_tobytes crypto_sign_ed25519_ref10_ge_p3_tobytes + +#define ge_p2_0 crypto_sign_ed25519_ref10_ge_p2_0 +#define ge_p3_0 crypto_sign_ed25519_ref10_ge_p3_0 +#define ge_precomp_0 crypto_sign_ed25519_ref10_ge_precomp_0 +#define ge_p3_to_p2 crypto_sign_ed25519_ref10_ge_p3_to_p2 +#define ge_p3_to_cached crypto_sign_ed25519_ref10_ge_p3_to_cached +#define ge_p1p1_to_p2 crypto_sign_ed25519_ref10_ge_p1p1_to_p2 +#define ge_p1p1_to_p3 crypto_sign_ed25519_ref10_ge_p1p1_to_p3 +#define ge_p2_dbl crypto_sign_ed25519_ref10_ge_p2_dbl +#define ge_p3_dbl crypto_sign_ed25519_ref10_ge_p3_dbl + +#define ge_madd crypto_sign_ed25519_ref10_ge_madd +#define ge_msub crypto_sign_ed25519_ref10_ge_msub +#define ge_add crypto_sign_ed25519_ref10_ge_add +#define ge_sub crypto_sign_ed25519_ref10_ge_sub +#define ge_scalarmult_base crypto_sign_ed25519_ref10_ge_scalarmult_base +#define ge_double_scalarmult_vartime crypto_sign_ed25519_ref10_ge_double_scalarmult_vartime + +extern void ge_tobytes(unsigned char *,const ge_p2 *); +extern void ge_p3_tobytes(unsigned char *,const ge_p3 *); +extern int ge_frombytes_negate_vartime(ge_p3 *,const unsigned char *); + +extern void ge_p2_0(ge_p2 *); +extern void ge_p3_0(ge_p3 *); +extern void ge_precomp_0(ge_precomp *); +extern void ge_p3_to_p2(ge_p2 *,const ge_p3 *); +extern void ge_p3_to_cached(ge_cached *,const ge_p3 *); +extern void ge_p1p1_to_p2(ge_p2 *,const ge_p1p1 *); +extern void ge_p1p1_to_p3(ge_p3 *,const ge_p1p1 *); +extern void ge_p2_dbl(ge_p1p1 *,const ge_p2 *); +extern void ge_p3_dbl(ge_p1p1 *,const ge_p3 *); + +extern void ge_madd(ge_p1p1 *,const ge_p3 *,const ge_precomp *); +extern void ge_msub(ge_p1p1 *,const ge_p3 *,const ge_precomp *); +extern void ge_add(ge_p1p1 *,const ge_p3 *,const ge_cached *); +extern void ge_sub(ge_p1p1 *,const ge_p3 *,const ge_cached *); +extern void ge_scalarmult_base(ge_p3 *,const unsigned char *); +extern void ge_double_scalarmult_vartime(ge_p2 *,const unsigned char *,const ge_p3 *,const unsigned char *); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/ge_add.c b/Sources/libsignal/curve25519/ed25519/ge_add.c new file mode 100755 index 0000000..da7ff5d --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_add.c @@ -0,0 +1,11 @@ +#include "ge.h" + +/* +r = p + q +*/ + +void ge_add(ge_p1p1 *r,const ge_p3 *p,const ge_cached *q) +{ + fe t0; +#include "ge_add.h" +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_add.h b/Sources/libsignal/curve25519/ed25519/ge_add.h new file mode 100755 index 0000000..7481f8f --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_add.h @@ -0,0 +1,97 @@ + +/* qhasm: enter ge_add */ + +/* qhasm: fe X1 */ + +/* qhasm: fe Y1 */ + +/* qhasm: fe Z1 */ + +/* qhasm: fe Z2 */ + +/* qhasm: fe T1 */ + +/* qhasm: fe ZZ */ + +/* qhasm: fe YpX2 */ + +/* qhasm: fe YmX2 */ + +/* qhasm: fe T2d2 */ + +/* qhasm: fe X3 */ + +/* qhasm: fe Y3 */ + +/* qhasm: fe Z3 */ + +/* qhasm: fe T3 */ + +/* qhasm: fe YpX1 */ + +/* qhasm: fe YmX1 */ + +/* qhasm: fe A */ + +/* qhasm: fe B */ + +/* qhasm: fe C */ + +/* qhasm: fe D */ + +/* qhasm: YpX1 = Y1+X1 */ +/* asm 1: fe_add(>YpX1=fe#1,YpX1=r->X,Y,X); */ +fe_add(r->X,p->Y,p->X); + +/* qhasm: YmX1 = Y1-X1 */ +/* asm 1: fe_sub(>YmX1=fe#2,YmX1=r->Y,Y,X); */ +fe_sub(r->Y,p->Y,p->X); + +/* qhasm: A = YpX1*YpX2 */ +/* asm 1: fe_mul(>A=fe#3,A=r->Z,X,YplusX); */ +fe_mul(r->Z,r->X,q->YplusX); + +/* qhasm: B = YmX1*YmX2 */ +/* asm 1: fe_mul(>B=fe#2,B=r->Y,Y,YminusX); */ +fe_mul(r->Y,r->Y,q->YminusX); + +/* qhasm: C = T2d2*T1 */ +/* asm 1: fe_mul(>C=fe#4,C=r->T,T2d,T); */ +fe_mul(r->T,q->T2d,p->T); + +/* qhasm: ZZ = Z1*Z2 */ +/* asm 1: fe_mul(>ZZ=fe#1,ZZ=r->X,Z,Z); */ +fe_mul(r->X,p->Z,q->Z); + +/* qhasm: D = 2*ZZ */ +/* asm 1: fe_add(>D=fe#5,D=t0,X,X); */ +fe_add(t0,r->X,r->X); + +/* qhasm: X3 = A-B */ +/* asm 1: fe_sub(>X3=fe#1,X3=r->X,Z,Y); */ +fe_sub(r->X,r->Z,r->Y); + +/* qhasm: Y3 = A+B */ +/* asm 1: fe_add(>Y3=fe#2,Y3=r->Y,Z,Y); */ +fe_add(r->Y,r->Z,r->Y); + +/* qhasm: Z3 = D+C */ +/* asm 1: fe_add(>Z3=fe#3,Z3=r->Z,T); */ +fe_add(r->Z,t0,r->T); + +/* qhasm: T3 = D-C */ +/* asm 1: fe_sub(>T3=fe#4,T3=r->T,T); */ +fe_sub(r->T,t0,r->T); + +/* qhasm: return */ diff --git a/Sources/libsignal/curve25519/ed25519/ge_double_scalarmult.c b/Sources/libsignal/curve25519/ed25519/ge_double_scalarmult.c new file mode 100755 index 0000000..f8bf4bf --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_double_scalarmult.c @@ -0,0 +1,96 @@ +#include "ge.h" + +static void slide(signed char *r,const unsigned char *a) +{ + int i; + int b; + int k; + + for (i = 0;i < 256;++i) + r[i] = 1 & (a[i >> 3] >> (i & 7)); + + for (i = 0;i < 256;++i) + if (r[i]) { + for (b = 1;b <= 6 && i + b < 256;++b) { + if (r[i + b]) { + if (r[i] + (r[i + b] << b) <= 15) { + r[i] += r[i + b] << b; r[i + b] = 0; + } else if (r[i] - (r[i + b] << b) >= -15) { + r[i] -= r[i + b] << b; + for (k = i + b;k < 256;++k) { + if (!r[k]) { + r[k] = 1; + break; + } + r[k] = 0; + } + } else + break; + } + } + } + +} + +static ge_precomp Bi[8] = { +#include "base2.h" +} ; + +/* +r = a * A + b * B +where a = a[0]+256*a[1]+...+256^31 a[31]. +and b = b[0]+256*b[1]+...+256^31 b[31]. +B is the Ed25519 base point (x,4/5) with x positive. +*/ + +void ge_double_scalarmult_vartime(ge_p2 *r,const unsigned char *a,const ge_p3 *A,const unsigned char *b) +{ + signed char aslide[256]; + signed char bslide[256]; + ge_cached Ai[8]; /* A,3A,5A,7A,9A,11A,13A,15A */ + ge_p1p1 t; + ge_p3 u; + ge_p3 A2; + int i; + + slide(aslide,a); + slide(bslide,b); + + ge_p3_to_cached(&Ai[0],A); + ge_p3_dbl(&t,A); ge_p1p1_to_p3(&A2,&t); + ge_add(&t,&A2,&Ai[0]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[1],&u); + ge_add(&t,&A2,&Ai[1]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[2],&u); + ge_add(&t,&A2,&Ai[2]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[3],&u); + ge_add(&t,&A2,&Ai[3]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[4],&u); + ge_add(&t,&A2,&Ai[4]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[5],&u); + ge_add(&t,&A2,&Ai[5]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[6],&u); + ge_add(&t,&A2,&Ai[6]); ge_p1p1_to_p3(&u,&t); ge_p3_to_cached(&Ai[7],&u); + + ge_p2_0(r); + + for (i = 255;i >= 0;--i) { + if (aslide[i] || bslide[i]) break; + } + + for (;i >= 0;--i) { + ge_p2_dbl(&t,r); + + if (aslide[i] > 0) { + ge_p1p1_to_p3(&u,&t); + ge_add(&t,&u,&Ai[aslide[i]/2]); + } else if (aslide[i] < 0) { + ge_p1p1_to_p3(&u,&t); + ge_sub(&t,&u,&Ai[(-aslide[i])/2]); + } + + if (bslide[i] > 0) { + ge_p1p1_to_p3(&u,&t); + ge_madd(&t,&u,&Bi[bslide[i]/2]); + } else if (bslide[i] < 0) { + ge_p1p1_to_p3(&u,&t); + ge_msub(&t,&u,&Bi[(-bslide[i])/2]); + } + + ge_p1p1_to_p2(r,&t); + } +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_frombytes.c b/Sources/libsignal/curve25519/ed25519/ge_frombytes.c new file mode 100755 index 0000000..1a059ee --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_frombytes.c @@ -0,0 +1,50 @@ +#include "ge.h" + +static const fe d = { +#include "d.h" +} ; + +static const fe sqrtm1 = { +#include "sqrtm1.h" +} ; + +int ge_frombytes_negate_vartime(ge_p3 *h,const unsigned char *s) +{ + fe u; + fe v; + fe v3; + fe vxx; + fe check; + + fe_frombytes(h->Y,s); + fe_1(h->Z); + fe_sq(u,h->Y); + fe_mul(v,u,d); + fe_sub(u,u,h->Z); /* u = y^2-1 */ + fe_add(v,v,h->Z); /* v = dy^2+1 */ + + fe_sq(v3,v); + fe_mul(v3,v3,v); /* v3 = v^3 */ + fe_sq(h->X,v3); + fe_mul(h->X,h->X,v); + fe_mul(h->X,h->X,u); /* x = uv^7 */ + + fe_pow22523(h->X,h->X); /* x = (uv^7)^((q-5)/8) */ + fe_mul(h->X,h->X,v3); + fe_mul(h->X,h->X,u); /* x = uv^3(uv^7)^((q-5)/8) */ + + fe_sq(vxx,h->X); + fe_mul(vxx,vxx,v); + fe_sub(check,vxx,u); /* vx^2-u */ + if (fe_isnonzero(check)) { + fe_add(check,vxx,u); /* vx^2+u */ + if (fe_isnonzero(check)) return -1; + fe_mul(h->X,h->X,sqrtm1); + } + + if (fe_isnegative(h->X) == (s[31] >> 7)) + fe_neg(h->X,h->X); + + fe_mul(h->T,h->X,h->Y); + return 0; +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_madd.c b/Sources/libsignal/curve25519/ed25519/ge_madd.c new file mode 100755 index 0000000..6225717 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_madd.c @@ -0,0 +1,11 @@ +#include "ge.h" + +/* +r = p + q +*/ + +void ge_madd(ge_p1p1 *r,const ge_p3 *p,const ge_precomp *q) +{ + fe t0; +#include "ge_madd.h" +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_madd.h b/Sources/libsignal/curve25519/ed25519/ge_madd.h new file mode 100755 index 0000000..ecae849 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_madd.h @@ -0,0 +1,88 @@ + +/* qhasm: enter ge_madd */ + +/* qhasm: fe X1 */ + +/* qhasm: fe Y1 */ + +/* qhasm: fe Z1 */ + +/* qhasm: fe T1 */ + +/* qhasm: fe ypx2 */ + +/* qhasm: fe ymx2 */ + +/* qhasm: fe xy2d2 */ + +/* qhasm: fe X3 */ + +/* qhasm: fe Y3 */ + +/* qhasm: fe Z3 */ + +/* qhasm: fe T3 */ + +/* qhasm: fe YpX1 */ + +/* qhasm: fe YmX1 */ + +/* qhasm: fe A */ + +/* qhasm: fe B */ + +/* qhasm: fe C */ + +/* qhasm: fe D */ + +/* qhasm: YpX1 = Y1+X1 */ +/* asm 1: fe_add(>YpX1=fe#1,YpX1=r->X,Y,X); */ +fe_add(r->X,p->Y,p->X); + +/* qhasm: YmX1 = Y1-X1 */ +/* asm 1: fe_sub(>YmX1=fe#2,YmX1=r->Y,Y,X); */ +fe_sub(r->Y,p->Y,p->X); + +/* qhasm: A = YpX1*ypx2 */ +/* asm 1: fe_mul(>A=fe#3,A=r->Z,X,yplusx); */ +fe_mul(r->Z,r->X,q->yplusx); + +/* qhasm: B = YmX1*ymx2 */ +/* asm 1: fe_mul(>B=fe#2,B=r->Y,Y,yminusx); */ +fe_mul(r->Y,r->Y,q->yminusx); + +/* qhasm: C = xy2d2*T1 */ +/* asm 1: fe_mul(>C=fe#4,C=r->T,xy2d,T); */ +fe_mul(r->T,q->xy2d,p->T); + +/* qhasm: D = 2*Z1 */ +/* asm 1: fe_add(>D=fe#5,D=t0,Z,Z); */ +fe_add(t0,p->Z,p->Z); + +/* qhasm: X3 = A-B */ +/* asm 1: fe_sub(>X3=fe#1,X3=r->X,Z,Y); */ +fe_sub(r->X,r->Z,r->Y); + +/* qhasm: Y3 = A+B */ +/* asm 1: fe_add(>Y3=fe#2,Y3=r->Y,Z,Y); */ +fe_add(r->Y,r->Z,r->Y); + +/* qhasm: Z3 = D+C */ +/* asm 1: fe_add(>Z3=fe#3,Z3=r->Z,T); */ +fe_add(r->Z,t0,r->T); + +/* qhasm: T3 = D-C */ +/* asm 1: fe_sub(>T3=fe#4,T3=r->T,T); */ +fe_sub(r->T,t0,r->T); + +/* qhasm: return */ diff --git a/Sources/libsignal/curve25519/ed25519/ge_msub.c b/Sources/libsignal/curve25519/ed25519/ge_msub.c new file mode 100755 index 0000000..741ecbf --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_msub.c @@ -0,0 +1,11 @@ +#include "ge.h" + +/* +r = p - q +*/ + +void ge_msub(ge_p1p1 *r,const ge_p3 *p,const ge_precomp *q) +{ + fe t0; +#include "ge_msub.h" +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_msub.h b/Sources/libsignal/curve25519/ed25519/ge_msub.h new file mode 100755 index 0000000..500f986 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_msub.h @@ -0,0 +1,88 @@ + +/* qhasm: enter ge_msub */ + +/* qhasm: fe X1 */ + +/* qhasm: fe Y1 */ + +/* qhasm: fe Z1 */ + +/* qhasm: fe T1 */ + +/* qhasm: fe ypx2 */ + +/* qhasm: fe ymx2 */ + +/* qhasm: fe xy2d2 */ + +/* qhasm: fe X3 */ + +/* qhasm: fe Y3 */ + +/* qhasm: fe Z3 */ + +/* qhasm: fe T3 */ + +/* qhasm: fe YpX1 */ + +/* qhasm: fe YmX1 */ + +/* qhasm: fe A */ + +/* qhasm: fe B */ + +/* qhasm: fe C */ + +/* qhasm: fe D */ + +/* qhasm: YpX1 = Y1+X1 */ +/* asm 1: fe_add(>YpX1=fe#1,YpX1=r->X,Y,X); */ +fe_add(r->X,p->Y,p->X); + +/* qhasm: YmX1 = Y1-X1 */ +/* asm 1: fe_sub(>YmX1=fe#2,YmX1=r->Y,Y,X); */ +fe_sub(r->Y,p->Y,p->X); + +/* qhasm: A = YpX1*ymx2 */ +/* asm 1: fe_mul(>A=fe#3,A=r->Z,X,yminusx); */ +fe_mul(r->Z,r->X,q->yminusx); + +/* qhasm: B = YmX1*ypx2 */ +/* asm 1: fe_mul(>B=fe#2,B=r->Y,Y,yplusx); */ +fe_mul(r->Y,r->Y,q->yplusx); + +/* qhasm: C = xy2d2*T1 */ +/* asm 1: fe_mul(>C=fe#4,C=r->T,xy2d,T); */ +fe_mul(r->T,q->xy2d,p->T); + +/* qhasm: D = 2*Z1 */ +/* asm 1: fe_add(>D=fe#5,D=t0,Z,Z); */ +fe_add(t0,p->Z,p->Z); + +/* qhasm: X3 = A-B */ +/* asm 1: fe_sub(>X3=fe#1,X3=r->X,Z,Y); */ +fe_sub(r->X,r->Z,r->Y); + +/* qhasm: Y3 = A+B */ +/* asm 1: fe_add(>Y3=fe#2,Y3=r->Y,Z,Y); */ +fe_add(r->Y,r->Z,r->Y); + +/* qhasm: Z3 = D-C */ +/* asm 1: fe_sub(>Z3=fe#3,Z3=r->Z,T); */ +fe_sub(r->Z,t0,r->T); + +/* qhasm: T3 = D+C */ +/* asm 1: fe_add(>T3=fe#4,T3=r->T,T); */ +fe_add(r->T,t0,r->T); + +/* qhasm: return */ diff --git a/Sources/libsignal/curve25519/ed25519/ge_p1p1_to_p2.c b/Sources/libsignal/curve25519/ed25519/ge_p1p1_to_p2.c new file mode 100755 index 0000000..9bb5013 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p1p1_to_p2.c @@ -0,0 +1,12 @@ +#include "ge.h" + +/* +r = p +*/ + +extern void ge_p1p1_to_p2(ge_p2 *r,const ge_p1p1 *p) +{ + fe_mul(r->X,p->X,p->T); + fe_mul(r->Y,p->Y,p->Z); + fe_mul(r->Z,p->Z,p->T); +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_p1p1_to_p3.c b/Sources/libsignal/curve25519/ed25519/ge_p1p1_to_p3.c new file mode 100755 index 0000000..2f57b10 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p1p1_to_p3.c @@ -0,0 +1,13 @@ +#include "ge.h" + +/* +r = p +*/ + +extern void ge_p1p1_to_p3(ge_p3 *r,const ge_p1p1 *p) +{ + fe_mul(r->X,p->X,p->T); + fe_mul(r->Y,p->Y,p->Z); + fe_mul(r->Z,p->Z,p->T); + fe_mul(r->T,p->X,p->Y); +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_p2_0.c b/Sources/libsignal/curve25519/ed25519/ge_p2_0.c new file mode 100755 index 0000000..6191d1e --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p2_0.c @@ -0,0 +1,8 @@ +#include "ge.h" + +void ge_p2_0(ge_p2 *h) +{ + fe_0(h->X); + fe_1(h->Y); + fe_1(h->Z); +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_p2_dbl.c b/Sources/libsignal/curve25519/ed25519/ge_p2_dbl.c new file mode 100755 index 0000000..2e332b5 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p2_dbl.c @@ -0,0 +1,11 @@ +#include "ge.h" + +/* +r = 2 * p +*/ + +void ge_p2_dbl(ge_p1p1 *r,const ge_p2 *p) +{ + fe t0; +#include "ge_p2_dbl.h" +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_p2_dbl.h b/Sources/libsignal/curve25519/ed25519/ge_p2_dbl.h new file mode 100755 index 0000000..128efed --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p2_dbl.h @@ -0,0 +1,73 @@ + +/* qhasm: enter ge_p2_dbl */ + +/* qhasm: fe X1 */ + +/* qhasm: fe Y1 */ + +/* qhasm: fe Z1 */ + +/* qhasm: fe A */ + +/* qhasm: fe AA */ + +/* qhasm: fe XX */ + +/* qhasm: fe YY */ + +/* qhasm: fe B */ + +/* qhasm: fe X3 */ + +/* qhasm: fe Y3 */ + +/* qhasm: fe Z3 */ + +/* qhasm: fe T3 */ + +/* qhasm: XX=X1^2 */ +/* asm 1: fe_sq(>XX=fe#1,XX=r->X,X); */ +fe_sq(r->X,p->X); + +/* qhasm: YY=Y1^2 */ +/* asm 1: fe_sq(>YY=fe#3,YY=r->Z,Y); */ +fe_sq(r->Z,p->Y); + +/* qhasm: B=2*Z1^2 */ +/* asm 1: fe_sq2(>B=fe#4,B=r->T,Z); */ +fe_sq2(r->T,p->Z); + +/* qhasm: A=X1+Y1 */ +/* asm 1: fe_add(>A=fe#2,A=r->Y,X,Y); */ +fe_add(r->Y,p->X,p->Y); + +/* qhasm: AA=A^2 */ +/* asm 1: fe_sq(>AA=fe#5,AA=t0,Y); */ +fe_sq(t0,r->Y); + +/* qhasm: Y3=YY+XX */ +/* asm 1: fe_add(>Y3=fe#2,Y3=r->Y,Z,X); */ +fe_add(r->Y,r->Z,r->X); + +/* qhasm: Z3=YY-XX */ +/* asm 1: fe_sub(>Z3=fe#3,Z3=r->Z,Z,X); */ +fe_sub(r->Z,r->Z,r->X); + +/* qhasm: X3=AA-Y3 */ +/* asm 1: fe_sub(>X3=fe#1,X3=r->X,Y); */ +fe_sub(r->X,t0,r->Y); + +/* qhasm: T3=B-Z3 */ +/* asm 1: fe_sub(>T3=fe#4,T3=r->T,T,Z); */ +fe_sub(r->T,r->T,r->Z); + +/* qhasm: return */ diff --git a/Sources/libsignal/curve25519/ed25519/ge_p3_0.c b/Sources/libsignal/curve25519/ed25519/ge_p3_0.c new file mode 100755 index 0000000..401b293 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p3_0.c @@ -0,0 +1,9 @@ +#include "ge.h" + +void ge_p3_0(ge_p3 *h) +{ + fe_0(h->X); + fe_1(h->Y); + fe_1(h->Z); + fe_0(h->T); +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_p3_dbl.c b/Sources/libsignal/curve25519/ed25519/ge_p3_dbl.c new file mode 100755 index 0000000..0d8a059 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p3_dbl.c @@ -0,0 +1,12 @@ +#include "ge.h" + +/* +r = 2 * p +*/ + +void ge_p3_dbl(ge_p1p1 *r,const ge_p3 *p) +{ + ge_p2 q; + ge_p3_to_p2(&q,p); + ge_p2_dbl(r,&q); +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_p3_to_cached.c b/Sources/libsignal/curve25519/ed25519/ge_p3_to_cached.c new file mode 100755 index 0000000..bde6422 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p3_to_cached.c @@ -0,0 +1,17 @@ +#include "ge.h" + +/* +r = p +*/ + +static const fe d2 = { +#include "d2.h" +} ; + +extern void ge_p3_to_cached(ge_cached *r,const ge_p3 *p) +{ + fe_add(r->YplusX,p->Y,p->X); + fe_sub(r->YminusX,p->Y,p->X); + fe_copy(r->Z,p->Z); + fe_mul(r->T2d,p->T,d2); +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_p3_to_p2.c b/Sources/libsignal/curve25519/ed25519/ge_p3_to_p2.c new file mode 100755 index 0000000..e532a9e --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p3_to_p2.c @@ -0,0 +1,12 @@ +#include "ge.h" + +/* +r = p +*/ + +extern void ge_p3_to_p2(ge_p2 *r,const ge_p3 *p) +{ + fe_copy(r->X,p->X); + fe_copy(r->Y,p->Y); + fe_copy(r->Z,p->Z); +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_p3_tobytes.c b/Sources/libsignal/curve25519/ed25519/ge_p3_tobytes.c new file mode 100755 index 0000000..21cb2fc --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_p3_tobytes.c @@ -0,0 +1,14 @@ +#include "ge.h" + +void ge_p3_tobytes(unsigned char *s,const ge_p3 *h) +{ + fe recip; + fe x; + fe y; + + fe_invert(recip,h->Z); + fe_mul(x,h->X,recip); + fe_mul(y,h->Y,recip); + fe_tobytes(s,y); + s[31] ^= fe_isnegative(x) << 7; +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_precomp_0.c b/Sources/libsignal/curve25519/ed25519/ge_precomp_0.c new file mode 100755 index 0000000..2e21886 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_precomp_0.c @@ -0,0 +1,8 @@ +#include "ge.h" + +void ge_precomp_0(ge_precomp *h) +{ + fe_1(h->yplusx); + fe_1(h->yminusx); + fe_0(h->xy2d); +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_scalarmult_base.c b/Sources/libsignal/curve25519/ed25519/ge_scalarmult_base.c new file mode 100755 index 0000000..421e4fa --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_scalarmult_base.c @@ -0,0 +1,105 @@ +#include "ge.h" +#include "crypto_uint32.h" + +static unsigned char equal(signed char b,signed char c) +{ + unsigned char ub = b; + unsigned char uc = c; + unsigned char x = ub ^ uc; /* 0: yes; 1..255: no */ + crypto_uint32 y = x; /* 0: yes; 1..255: no */ + y -= 1; /* 4294967295: yes; 0..254: no */ + y >>= 31; /* 1: yes; 0: no */ + return y; +} + +static unsigned char negative(signed char b) +{ + unsigned long long x = b; /* 18446744073709551361..18446744073709551615: yes; 0..255: no */ + x >>= 63; /* 1: yes; 0: no */ + return x; +} + +static void cmov(ge_precomp *t,ge_precomp *u,unsigned char b) +{ + fe_cmov(t->yplusx,u->yplusx,b); + fe_cmov(t->yminusx,u->yminusx,b); + fe_cmov(t->xy2d,u->xy2d,b); +} + +/* base[i][j] = (j+1)*256^i*B */ +static ge_precomp base[32][8] = { +#include "base.h" +} ; + +static void select(ge_precomp *t,int pos,signed char b) +{ + ge_precomp minust; + unsigned char bnegative = negative(b); + unsigned char babs = b - (((-bnegative) & b) << 1); + + ge_precomp_0(t); + cmov(t,&base[pos][0],equal(babs,1)); + cmov(t,&base[pos][1],equal(babs,2)); + cmov(t,&base[pos][2],equal(babs,3)); + cmov(t,&base[pos][3],equal(babs,4)); + cmov(t,&base[pos][4],equal(babs,5)); + cmov(t,&base[pos][5],equal(babs,6)); + cmov(t,&base[pos][6],equal(babs,7)); + cmov(t,&base[pos][7],equal(babs,8)); + fe_copy(minust.yplusx,t->yminusx); + fe_copy(minust.yminusx,t->yplusx); + fe_neg(minust.xy2d,t->xy2d); + cmov(t,&minust,bnegative); +} + +/* +h = a * B +where a = a[0]+256*a[1]+...+256^31 a[31] +B is the Ed25519 base point (x,4/5) with x positive. + +Preconditions: + a[31] <= 127 +*/ + +void ge_scalarmult_base(ge_p3 *h,const unsigned char *a) +{ + signed char e[64]; + signed char carry; + ge_p1p1 r; + ge_p2 s; + ge_precomp t; + int i; + + for (i = 0;i < 32;++i) { + e[2 * i + 0] = (a[i] >> 0) & 15; + e[2 * i + 1] = (a[i] >> 4) & 15; + } + /* each e[i] is between 0 and 15 */ + /* e[63] is between 0 and 7 */ + + carry = 0; + for (i = 0;i < 63;++i) { + e[i] += carry; + carry = e[i] + 8; + carry >>= 4; + e[i] -= carry << 4; + } + e[63] += carry; + /* each e[i] is between -8 and 8 */ + + ge_p3_0(h); + for (i = 1;i < 64;i += 2) { + select(&t,i / 2,e[i]); + ge_madd(&r,h,&t); ge_p1p1_to_p3(h,&r); + } + + ge_p3_dbl(&r,h); ge_p1p1_to_p2(&s,&r); + ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r); + ge_p2_dbl(&r,&s); ge_p1p1_to_p2(&s,&r); + ge_p2_dbl(&r,&s); ge_p1p1_to_p3(h,&r); + + for (i = 0;i < 64;i += 2) { + select(&t,i / 2,e[i]); + ge_madd(&r,h,&t); ge_p1p1_to_p3(h,&r); + } +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_sub.c b/Sources/libsignal/curve25519/ed25519/ge_sub.c new file mode 100755 index 0000000..69f3d54 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_sub.c @@ -0,0 +1,11 @@ +#include "ge.h" + +/* +r = p - q +*/ + +void ge_sub(ge_p1p1 *r,const ge_p3 *p,const ge_cached *q) +{ + fe t0; +#include "ge_sub.h" +} diff --git a/Sources/libsignal/curve25519/ed25519/ge_sub.h b/Sources/libsignal/curve25519/ed25519/ge_sub.h new file mode 100755 index 0000000..b4ef1f5 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_sub.h @@ -0,0 +1,97 @@ + +/* qhasm: enter ge_sub */ + +/* qhasm: fe X1 */ + +/* qhasm: fe Y1 */ + +/* qhasm: fe Z1 */ + +/* qhasm: fe Z2 */ + +/* qhasm: fe T1 */ + +/* qhasm: fe ZZ */ + +/* qhasm: fe YpX2 */ + +/* qhasm: fe YmX2 */ + +/* qhasm: fe T2d2 */ + +/* qhasm: fe X3 */ + +/* qhasm: fe Y3 */ + +/* qhasm: fe Z3 */ + +/* qhasm: fe T3 */ + +/* qhasm: fe YpX1 */ + +/* qhasm: fe YmX1 */ + +/* qhasm: fe A */ + +/* qhasm: fe B */ + +/* qhasm: fe C */ + +/* qhasm: fe D */ + +/* qhasm: YpX1 = Y1+X1 */ +/* asm 1: fe_add(>YpX1=fe#1,YpX1=r->X,Y,X); */ +fe_add(r->X,p->Y,p->X); + +/* qhasm: YmX1 = Y1-X1 */ +/* asm 1: fe_sub(>YmX1=fe#2,YmX1=r->Y,Y,X); */ +fe_sub(r->Y,p->Y,p->X); + +/* qhasm: A = YpX1*YmX2 */ +/* asm 1: fe_mul(>A=fe#3,A=r->Z,X,YminusX); */ +fe_mul(r->Z,r->X,q->YminusX); + +/* qhasm: B = YmX1*YpX2 */ +/* asm 1: fe_mul(>B=fe#2,B=r->Y,Y,YplusX); */ +fe_mul(r->Y,r->Y,q->YplusX); + +/* qhasm: C = T2d2*T1 */ +/* asm 1: fe_mul(>C=fe#4,C=r->T,T2d,T); */ +fe_mul(r->T,q->T2d,p->T); + +/* qhasm: ZZ = Z1*Z2 */ +/* asm 1: fe_mul(>ZZ=fe#1,ZZ=r->X,Z,Z); */ +fe_mul(r->X,p->Z,q->Z); + +/* qhasm: D = 2*ZZ */ +/* asm 1: fe_add(>D=fe#5,D=t0,X,X); */ +fe_add(t0,r->X,r->X); + +/* qhasm: X3 = A-B */ +/* asm 1: fe_sub(>X3=fe#1,X3=r->X,Z,Y); */ +fe_sub(r->X,r->Z,r->Y); + +/* qhasm: Y3 = A+B */ +/* asm 1: fe_add(>Y3=fe#2,Y3=r->Y,Z,Y); */ +fe_add(r->Y,r->Z,r->Y); + +/* qhasm: Z3 = D-C */ +/* asm 1: fe_sub(>Z3=fe#3,Z3=r->Z,T); */ +fe_sub(r->Z,t0,r->T); + +/* qhasm: T3 = D+C */ +/* asm 1: fe_add(>T3=fe#4,T3=r->T,T); */ +fe_add(r->T,t0,r->T); + +/* qhasm: return */ diff --git a/Sources/libsignal/curve25519/ed25519/ge_tobytes.c b/Sources/libsignal/curve25519/ed25519/ge_tobytes.c new file mode 100755 index 0000000..31b3d33 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/ge_tobytes.c @@ -0,0 +1,14 @@ +#include "ge.h" + +void ge_tobytes(unsigned char *s,const ge_p2 *h) +{ + fe recip; + fe x; + fe y; + + fe_invert(recip,h->Z); + fe_mul(x,h->X,recip); + fe_mul(y,h->Y,recip); + fe_tobytes(s,y); + s[31] ^= fe_isnegative(x) << 7; +} diff --git a/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_int32.h b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_int32.h new file mode 100755 index 0000000..cae135e --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_int32.h @@ -0,0 +1,6 @@ +#ifndef crypto_int32_h +#define crypto_int32_h + +typedef int crypto_int32; + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_int64.h b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_int64.h new file mode 100755 index 0000000..fc92417 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_int64.h @@ -0,0 +1,6 @@ +#ifndef crypto_int64_h +#define crypto_int64_h + +typedef long long crypto_int64; + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_sign.h b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_sign.h new file mode 100755 index 0000000..8472603 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_sign.h @@ -0,0 +1,16 @@ +#ifndef crypto_sign_H +#define crypto_sign_H + +#include "crypto_sign_edwards25519sha512batch.h" + +#define crypto_sign crypto_sign_edwards25519sha512batch +#define crypto_sign_open crypto_sign_edwards25519sha512batch_open +#define crypto_sign_keypair crypto_sign_edwards25519sha512batch_keypair +#define crypto_sign_BYTES crypto_sign_edwards25519sha512batch_BYTES +#define crypto_sign_PUBLICKEYBYTES crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES +#define crypto_sign_SECRETKEYBYTES crypto_sign_edwards25519sha512batch_SECRETKEYBYTES +#define crypto_sign_PRIMITIVE "edwards25519sha512batch" +#define crypto_sign_IMPLEMENTATION crypto_sign_edwards25519sha512batch_IMPLEMENTATION +#define crypto_sign_VERSION crypto_sign_edwards25519sha512batch_VERSION + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_sign_edwards25519sha512batch.h b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_sign_edwards25519sha512batch.h new file mode 100755 index 0000000..62fae61 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_sign_edwards25519sha512batch.h @@ -0,0 +1,33 @@ +#ifndef crypto_sign_edwards25519sha512batch_H +#define crypto_sign_edwards25519sha512batch_H + +#define crypto_sign_edwards25519sha512batch_ref10_SECRETKEYBYTES 64 +#define crypto_sign_edwards25519sha512batch_ref10_PUBLICKEYBYTES 32 +#define crypto_sign_edwards25519sha512batch_ref10_BYTES 64 +#ifdef __cplusplus +#include +extern std::string crypto_sign_edwards25519sha512batch_ref10(const std::string &,const std::string &); +extern std::string crypto_sign_edwards25519sha512batch_ref10_open(const std::string &,const std::string &); +extern std::string crypto_sign_edwards25519sha512batch_ref10_keypair(std::string *); +extern "C" { +#endif +extern int crypto_sign_edwards25519sha512batch_ref10(unsigned char *,unsigned long long *,const unsigned char *,unsigned long long,const unsigned char *); +extern int crypto_sign_edwards25519sha512batch_ref10_open(unsigned char *,unsigned long long *,const unsigned char *,unsigned long long,const unsigned char *); +extern int crypto_sign_edwards25519sha512batch_ref10_keypair(unsigned char *,unsigned char *); +#ifdef __cplusplus +} +#endif + +#define crypto_sign_edwards25519sha512batch crypto_sign_edwards25519sha512batch_ref10 +#define crypto_sign_edwards25519sha512batch_open crypto_sign_edwards25519sha512batch_ref10_open +#define crypto_sign_edwards25519sha512batch_keypair crypto_sign_edwards25519sha512batch_ref10_keypair +#define crypto_sign_edwards25519sha512batch_BYTES crypto_sign_edwards25519sha512batch_ref10_BYTES +#define crypto_sign_edwards25519sha512batch_PUBLICKEYBYTES crypto_sign_edwards25519sha512batch_ref10_PUBLICKEYBYTES +#define crypto_sign_edwards25519sha512batch_SECRETKEYBYTES crypto_sign_edwards25519sha512batch_ref10_SECRETKEYBYTES +#define crypto_sign_edwards25519sha512batch_IMPLEMENTATION "crypto_sign/edwards25519sha512batch/ref10" +#ifndef crypto_sign_edwards25519sha512batch_ref10_VERSION +#define crypto_sign_edwards25519sha512batch_ref10_VERSION "-" +#endif +#define crypto_sign_edwards25519sha512batch_VERSION crypto_sign_edwards25519sha512batch_ref10_VERSION + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_uint32.h b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_uint32.h new file mode 100755 index 0000000..21020d7 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_uint32.h @@ -0,0 +1,6 @@ +#ifndef crypto_uint32_h +#define crypto_uint32_h + +typedef unsigned int crypto_uint32; + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_uint64.h b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_uint64.h new file mode 100755 index 0000000..5aa0070 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_uint64.h @@ -0,0 +1,6 @@ +#ifndef crypto_uint64_h +#define crypto_uint64_h + +typedef unsigned long long crypto_uint64; + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_verify_32.h b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_verify_32.h new file mode 100755 index 0000000..978d845 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/nacl_includes/crypto_verify_32.h @@ -0,0 +1,22 @@ +#ifndef crypto_verify_32_H +#define crypto_verify_32_H + +#define crypto_verify_32_ref_BYTES 32 +#ifdef __cplusplus +#include +extern "C" { +#endif +extern int crypto_verify_32_ref(const unsigned char *,const unsigned char *); +#ifdef __cplusplus +} +#endif + +#define crypto_verify_32 crypto_verify_32_ref +#define crypto_verify_32_BYTES crypto_verify_32_ref_BYTES +#define crypto_verify_32_IMPLEMENTATION "crypto_verify/32/ref" +#ifndef crypto_verify_32_ref_VERSION +#define crypto_verify_32_ref_VERSION "-" +#endif +#define crypto_verify_32_VERSION crypto_verify_32_ref_VERSION + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/nacl_sha512/blocks.c b/Sources/libsignal/curve25519/ed25519/nacl_sha512/blocks.c new file mode 100755 index 0000000..1c5f23d --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/nacl_sha512/blocks.c @@ -0,0 +1,238 @@ +#include +typedef uint64_t uint64; + +static uint64 load_bigendian(const unsigned char *x) +{ + return + (uint64) (x[7]) \ + | (((uint64) (x[6])) << 8) \ + | (((uint64) (x[5])) << 16) \ + | (((uint64) (x[4])) << 24) \ + | (((uint64) (x[3])) << 32) \ + | (((uint64) (x[2])) << 40) \ + | (((uint64) (x[1])) << 48) \ + | (((uint64) (x[0])) << 56) + ; +} + +static void store_bigendian(unsigned char *x,uint64 u) +{ + x[7] = u; u >>= 8; + x[6] = u; u >>= 8; + x[5] = u; u >>= 8; + x[4] = u; u >>= 8; + x[3] = u; u >>= 8; + x[2] = u; u >>= 8; + x[1] = u; u >>= 8; + x[0] = u; +} + +#define SHR(x,c) ((x) >> (c)) +#define ROTR(x,c) (((x) >> (c)) | ((x) << (64 - (c)))) + +#define Ch(x,y,z) ((x & y) ^ (~x & z)) +#define Maj(x,y,z) ((x & y) ^ (x & z) ^ (y & z)) +#define Sigma0(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39)) +#define Sigma1(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41)) +#define sigma0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x,7)) +#define sigma1(x) (ROTR(x,19) ^ ROTR(x,61) ^ SHR(x,6)) + +#define M(w0,w14,w9,w1) w0 = sigma1(w14) + w9 + sigma0(w1) + w0; + +#define EXPAND \ + M(w0 ,w14,w9 ,w1 ) \ + M(w1 ,w15,w10,w2 ) \ + M(w2 ,w0 ,w11,w3 ) \ + M(w3 ,w1 ,w12,w4 ) \ + M(w4 ,w2 ,w13,w5 ) \ + M(w5 ,w3 ,w14,w6 ) \ + M(w6 ,w4 ,w15,w7 ) \ + M(w7 ,w5 ,w0 ,w8 ) \ + M(w8 ,w6 ,w1 ,w9 ) \ + M(w9 ,w7 ,w2 ,w10) \ + M(w10,w8 ,w3 ,w11) \ + M(w11,w9 ,w4 ,w12) \ + M(w12,w10,w5 ,w13) \ + M(w13,w11,w6 ,w14) \ + M(w14,w12,w7 ,w15) \ + M(w15,w13,w8 ,w0 ) + +#define F(w,k) \ + T1 = h + Sigma1(e) + Ch(e,f,g) + k + w; \ + T2 = Sigma0(a) + Maj(a,b,c); \ + h = g; \ + g = f; \ + f = e; \ + e = d + T1; \ + d = c; \ + c = b; \ + b = a; \ + a = T1 + T2; + +int crypto_hashblocks_sha512(unsigned char *statebytes,const unsigned char *in,unsigned long long inlen) +{ + uint64 state[8]; + uint64 a; + uint64 b; + uint64 c; + uint64 d; + uint64 e; + uint64 f; + uint64 g; + uint64 h; + uint64 T1; + uint64 T2; + + a = load_bigendian(statebytes + 0); state[0] = a; + b = load_bigendian(statebytes + 8); state[1] = b; + c = load_bigendian(statebytes + 16); state[2] = c; + d = load_bigendian(statebytes + 24); state[3] = d; + e = load_bigendian(statebytes + 32); state[4] = e; + f = load_bigendian(statebytes + 40); state[5] = f; + g = load_bigendian(statebytes + 48); state[6] = g; + h = load_bigendian(statebytes + 56); state[7] = h; + + while (inlen >= 128) { + uint64 w0 = load_bigendian(in + 0); + uint64 w1 = load_bigendian(in + 8); + uint64 w2 = load_bigendian(in + 16); + uint64 w3 = load_bigendian(in + 24); + uint64 w4 = load_bigendian(in + 32); + uint64 w5 = load_bigendian(in + 40); + uint64 w6 = load_bigendian(in + 48); + uint64 w7 = load_bigendian(in + 56); + uint64 w8 = load_bigendian(in + 64); + uint64 w9 = load_bigendian(in + 72); + uint64 w10 = load_bigendian(in + 80); + uint64 w11 = load_bigendian(in + 88); + uint64 w12 = load_bigendian(in + 96); + uint64 w13 = load_bigendian(in + 104); + uint64 w14 = load_bigendian(in + 112); + uint64 w15 = load_bigendian(in + 120); + + F(w0 ,0x428a2f98d728ae22ULL) + F(w1 ,0x7137449123ef65cdULL) + F(w2 ,0xb5c0fbcfec4d3b2fULL) + F(w3 ,0xe9b5dba58189dbbcULL) + F(w4 ,0x3956c25bf348b538ULL) + F(w5 ,0x59f111f1b605d019ULL) + F(w6 ,0x923f82a4af194f9bULL) + F(w7 ,0xab1c5ed5da6d8118ULL) + F(w8 ,0xd807aa98a3030242ULL) + F(w9 ,0x12835b0145706fbeULL) + F(w10,0x243185be4ee4b28cULL) + F(w11,0x550c7dc3d5ffb4e2ULL) + F(w12,0x72be5d74f27b896fULL) + F(w13,0x80deb1fe3b1696b1ULL) + F(w14,0x9bdc06a725c71235ULL) + F(w15,0xc19bf174cf692694ULL) + + EXPAND + + F(w0 ,0xe49b69c19ef14ad2ULL) + F(w1 ,0xefbe4786384f25e3ULL) + F(w2 ,0x0fc19dc68b8cd5b5ULL) + F(w3 ,0x240ca1cc77ac9c65ULL) + F(w4 ,0x2de92c6f592b0275ULL) + F(w5 ,0x4a7484aa6ea6e483ULL) + F(w6 ,0x5cb0a9dcbd41fbd4ULL) + F(w7 ,0x76f988da831153b5ULL) + F(w8 ,0x983e5152ee66dfabULL) + F(w9 ,0xa831c66d2db43210ULL) + F(w10,0xb00327c898fb213fULL) + F(w11,0xbf597fc7beef0ee4ULL) + F(w12,0xc6e00bf33da88fc2ULL) + F(w13,0xd5a79147930aa725ULL) + F(w14,0x06ca6351e003826fULL) + F(w15,0x142929670a0e6e70ULL) + + EXPAND + + F(w0 ,0x27b70a8546d22ffcULL) + F(w1 ,0x2e1b21385c26c926ULL) + F(w2 ,0x4d2c6dfc5ac42aedULL) + F(w3 ,0x53380d139d95b3dfULL) + F(w4 ,0x650a73548baf63deULL) + F(w5 ,0x766a0abb3c77b2a8ULL) + F(w6 ,0x81c2c92e47edaee6ULL) + F(w7 ,0x92722c851482353bULL) + F(w8 ,0xa2bfe8a14cf10364ULL) + F(w9 ,0xa81a664bbc423001ULL) + F(w10,0xc24b8b70d0f89791ULL) + F(w11,0xc76c51a30654be30ULL) + F(w12,0xd192e819d6ef5218ULL) + F(w13,0xd69906245565a910ULL) + F(w14,0xf40e35855771202aULL) + F(w15,0x106aa07032bbd1b8ULL) + + EXPAND + + F(w0 ,0x19a4c116b8d2d0c8ULL) + F(w1 ,0x1e376c085141ab53ULL) + F(w2 ,0x2748774cdf8eeb99ULL) + F(w3 ,0x34b0bcb5e19b48a8ULL) + F(w4 ,0x391c0cb3c5c95a63ULL) + F(w5 ,0x4ed8aa4ae3418acbULL) + F(w6 ,0x5b9cca4f7763e373ULL) + F(w7 ,0x682e6ff3d6b2b8a3ULL) + F(w8 ,0x748f82ee5defb2fcULL) + F(w9 ,0x78a5636f43172f60ULL) + F(w10,0x84c87814a1f0ab72ULL) + F(w11,0x8cc702081a6439ecULL) + F(w12,0x90befffa23631e28ULL) + F(w13,0xa4506cebde82bde9ULL) + F(w14,0xbef9a3f7b2c67915ULL) + F(w15,0xc67178f2e372532bULL) + + EXPAND + + F(w0 ,0xca273eceea26619cULL) + F(w1 ,0xd186b8c721c0c207ULL) + F(w2 ,0xeada7dd6cde0eb1eULL) + F(w3 ,0xf57d4f7fee6ed178ULL) + F(w4 ,0x06f067aa72176fbaULL) + F(w5 ,0x0a637dc5a2c898a6ULL) + F(w6 ,0x113f9804bef90daeULL) + F(w7 ,0x1b710b35131c471bULL) + F(w8 ,0x28db77f523047d84ULL) + F(w9 ,0x32caab7b40c72493ULL) + F(w10,0x3c9ebe0a15c9bebcULL) + F(w11,0x431d67c49c100d4cULL) + F(w12,0x4cc5d4becb3e42b6ULL) + F(w13,0x597f299cfc657e2aULL) + F(w14,0x5fcb6fab3ad6faecULL) + F(w15,0x6c44198c4a475817ULL) + + a += state[0]; + b += state[1]; + c += state[2]; + d += state[3]; + e += state[4]; + f += state[5]; + g += state[6]; + h += state[7]; + + state[0] = a; + state[1] = b; + state[2] = c; + state[3] = d; + state[4] = e; + state[5] = f; + state[6] = g; + state[7] = h; + + in += 128; + inlen -= 128; + } + + store_bigendian(statebytes + 0,state[0]); + store_bigendian(statebytes + 8,state[1]); + store_bigendian(statebytes + 16,state[2]); + store_bigendian(statebytes + 24,state[3]); + store_bigendian(statebytes + 32,state[4]); + store_bigendian(statebytes + 40,state[5]); + store_bigendian(statebytes + 48,state[6]); + store_bigendian(statebytes + 56,state[7]); + + return 0; +} diff --git a/Sources/libsignal/curve25519/ed25519/nacl_sha512/hash.c b/Sources/libsignal/curve25519/ed25519/nacl_sha512/hash.c new file mode 100755 index 0000000..8934cc1 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/nacl_sha512/hash.c @@ -0,0 +1,71 @@ +/* +20080913 +D. J. Bernstein +Public domain. +*/ + +#include +typedef uint64_t uint64; + +extern int crypto_hashblocks_sha512(unsigned char *statebytes,const unsigned char *in,unsigned long long inlen); + +#define blocks crypto_hashblocks_sha512 + +static const unsigned char iv[64] = { + 0x6a,0x09,0xe6,0x67,0xf3,0xbc,0xc9,0x08, + 0xbb,0x67,0xae,0x85,0x84,0xca,0xa7,0x3b, + 0x3c,0x6e,0xf3,0x72,0xfe,0x94,0xf8,0x2b, + 0xa5,0x4f,0xf5,0x3a,0x5f,0x1d,0x36,0xf1, + 0x51,0x0e,0x52,0x7f,0xad,0xe6,0x82,0xd1, + 0x9b,0x05,0x68,0x8c,0x2b,0x3e,0x6c,0x1f, + 0x1f,0x83,0xd9,0xab,0xfb,0x41,0xbd,0x6b, + 0x5b,0xe0,0xcd,0x19,0x13,0x7e,0x21,0x79 +} ; + +int crypto_hash_sha512(unsigned char *out,const unsigned char *in,unsigned long long inlen) +{ + unsigned char h[64]; + unsigned char padded[256]; + int i; + unsigned long long bytes = inlen; + + for (i = 0;i < 64;++i) h[i] = iv[i]; + + blocks(h,in,inlen); + in += inlen; + inlen &= 127; + in -= inlen; + + for (i = 0;i < inlen;++i) padded[i] = in[i]; + padded[inlen] = 0x80; + + if (inlen < 112) { + for (i = inlen + 1;i < 119;++i) padded[i] = 0; + padded[119] = bytes >> 61; + padded[120] = bytes >> 53; + padded[121] = bytes >> 45; + padded[122] = bytes >> 37; + padded[123] = bytes >> 29; + padded[124] = bytes >> 21; + padded[125] = bytes >> 13; + padded[126] = bytes >> 5; + padded[127] = bytes << 3; + blocks(h,padded,128); + } else { + for (i = inlen + 1;i < 247;++i) padded[i] = 0; + padded[247] = bytes >> 61; + padded[248] = bytes >> 53; + padded[249] = bytes >> 45; + padded[250] = bytes >> 37; + padded[251] = bytes >> 29; + padded[252] = bytes >> 21; + padded[253] = bytes >> 13; + padded[254] = bytes >> 5; + padded[255] = bytes << 3; + blocks(h,padded,256); + } + + for (i = 0;i < 64;++i) out[i] = h[i]; + + return 0; +} diff --git a/Sources/libsignal/curve25519/ed25519/open.c b/Sources/libsignal/curve25519/ed25519/open.c new file mode 100755 index 0000000..1ec4cd2 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/open.c @@ -0,0 +1,48 @@ +#include +#include "crypto_sign.h" +#include "crypto_hash_sha512.h" +#include "crypto_verify_32.h" +#include "ge.h" +#include "sc.h" + +int crypto_sign_open( + unsigned char *m,unsigned long long *mlen, + const unsigned char *sm,unsigned long long smlen, + const unsigned char *pk +) +{ + unsigned char pkcopy[32]; + unsigned char rcopy[32]; + unsigned char scopy[32]; + unsigned char h[64]; + unsigned char rcheck[32]; + ge_p3 A; + ge_p2 R; + + if (smlen < 64) goto badsig; + if (sm[63] & 224) goto badsig; + if (ge_frombytes_negate_vartime(&A,pk) != 0) goto badsig; + + memmove(pkcopy,pk,32); + memmove(rcopy,sm,32); + memmove(scopy,sm + 32,32); + + memmove(m,sm,smlen); + memmove(m + 32,pkcopy,32); + crypto_hash_sha512(h,m,smlen); + sc_reduce(h); + + ge_double_scalarmult_vartime(&R,h,&A,scopy); + ge_tobytes(rcheck,&R); + if (crypto_verify_32(rcheck,rcopy) == 0) { + memmove(m,m + 64,smlen - 64); + memset(m + smlen - 64,0,64); + *mlen = smlen - 64; + return 0; + } + +badsig: + *mlen = -1; + memset(m,0,smlen); + return -1; +} diff --git a/Sources/libsignal/curve25519/ed25519/pow22523.h b/Sources/libsignal/curve25519/ed25519/pow22523.h new file mode 100755 index 0000000..60ffe0d --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/pow22523.h @@ -0,0 +1,160 @@ + +/* qhasm: fe z1 */ + +/* qhasm: fe z2 */ + +/* qhasm: fe z8 */ + +/* qhasm: fe z9 */ + +/* qhasm: fe z11 */ + +/* qhasm: fe z22 */ + +/* qhasm: fe z_5_0 */ + +/* qhasm: fe z_10_5 */ + +/* qhasm: fe z_10_0 */ + +/* qhasm: fe z_20_10 */ + +/* qhasm: fe z_20_0 */ + +/* qhasm: fe z_40_20 */ + +/* qhasm: fe z_40_0 */ + +/* qhasm: fe z_50_10 */ + +/* qhasm: fe z_50_0 */ + +/* qhasm: fe z_100_50 */ + +/* qhasm: fe z_100_0 */ + +/* qhasm: fe z_200_100 */ + +/* qhasm: fe z_200_0 */ + +/* qhasm: fe z_250_50 */ + +/* qhasm: fe z_250_0 */ + +/* qhasm: fe z_252_2 */ + +/* qhasm: fe z_252_3 */ + +/* qhasm: enter pow22523 */ + +/* qhasm: z2 = z1^2^1 */ +/* asm 1: fe_sq(>z2=fe#1,z2=fe#1,>z2=fe#1); */ +/* asm 2: fe_sq(>z2=t0,z2=t0,>z2=t0); */ +fe_sq(t0,z); for (i = 1;i < 1;++i) fe_sq(t0,t0); + +/* qhasm: z8 = z2^2^2 */ +/* asm 1: fe_sq(>z8=fe#2,z8=fe#2,>z8=fe#2); */ +/* asm 2: fe_sq(>z8=t1,z8=t1,>z8=t1); */ +fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1); + +/* qhasm: z9 = z1*z8 */ +/* asm 1: fe_mul(>z9=fe#2,z9=t1,z11=fe#1,z11=t0,z22=fe#1,z22=fe#1,>z22=fe#1); */ +/* asm 2: fe_sq(>z22=t0,z22=t0,>z22=t0); */ +fe_sq(t0,t0); for (i = 1;i < 1;++i) fe_sq(t0,t0); + +/* qhasm: z_5_0 = z9*z22 */ +/* asm 1: fe_mul(>z_5_0=fe#1,z_5_0=t0,z_10_5=fe#2,z_10_5=fe#2,>z_10_5=fe#2); */ +/* asm 2: fe_sq(>z_10_5=t1,z_10_5=t1,>z_10_5=t1); */ +fe_sq(t1,t0); for (i = 1;i < 5;++i) fe_sq(t1,t1); + +/* qhasm: z_10_0 = z_10_5*z_5_0 */ +/* asm 1: fe_mul(>z_10_0=fe#1,z_10_0=t0,z_20_10=fe#2,z_20_10=fe#2,>z_20_10=fe#2); */ +/* asm 2: fe_sq(>z_20_10=t1,z_20_10=t1,>z_20_10=t1); */ +fe_sq(t1,t0); for (i = 1;i < 10;++i) fe_sq(t1,t1); + +/* qhasm: z_20_0 = z_20_10*z_10_0 */ +/* asm 1: fe_mul(>z_20_0=fe#2,z_20_0=t1,z_40_20=fe#3,z_40_20=fe#3,>z_40_20=fe#3); */ +/* asm 2: fe_sq(>z_40_20=t2,z_40_20=t2,>z_40_20=t2); */ +fe_sq(t2,t1); for (i = 1;i < 20;++i) fe_sq(t2,t2); + +/* qhasm: z_40_0 = z_40_20*z_20_0 */ +/* asm 1: fe_mul(>z_40_0=fe#2,z_40_0=t1,z_50_10=fe#2,z_50_10=fe#2,>z_50_10=fe#2); */ +/* asm 2: fe_sq(>z_50_10=t1,z_50_10=t1,>z_50_10=t1); */ +fe_sq(t1,t1); for (i = 1;i < 10;++i) fe_sq(t1,t1); + +/* qhasm: z_50_0 = z_50_10*z_10_0 */ +/* asm 1: fe_mul(>z_50_0=fe#1,z_50_0=t0,z_100_50=fe#2,z_100_50=fe#2,>z_100_50=fe#2); */ +/* asm 2: fe_sq(>z_100_50=t1,z_100_50=t1,>z_100_50=t1); */ +fe_sq(t1,t0); for (i = 1;i < 50;++i) fe_sq(t1,t1); + +/* qhasm: z_100_0 = z_100_50*z_50_0 */ +/* asm 1: fe_mul(>z_100_0=fe#2,z_100_0=t1,z_200_100=fe#3,z_200_100=fe#3,>z_200_100=fe#3); */ +/* asm 2: fe_sq(>z_200_100=t2,z_200_100=t2,>z_200_100=t2); */ +fe_sq(t2,t1); for (i = 1;i < 100;++i) fe_sq(t2,t2); + +/* qhasm: z_200_0 = z_200_100*z_100_0 */ +/* asm 1: fe_mul(>z_200_0=fe#2,z_200_0=t1,z_250_50=fe#2,z_250_50=fe#2,>z_250_50=fe#2); */ +/* asm 2: fe_sq(>z_250_50=t1,z_250_50=t1,>z_250_50=t1); */ +fe_sq(t1,t1); for (i = 1;i < 50;++i) fe_sq(t1,t1); + +/* qhasm: z_250_0 = z_250_50*z_50_0 */ +/* asm 1: fe_mul(>z_250_0=fe#1,z_250_0=t0,z_252_2=fe#1,z_252_2=fe#1,>z_252_2=fe#1); */ +/* asm 2: fe_sq(>z_252_2=t0,z_252_2=t0,>z_252_2=t0); */ +fe_sq(t0,t0); for (i = 1;i < 2;++i) fe_sq(t0,t0); + +/* qhasm: z_252_3 = z_252_2*z1 */ +/* asm 1: fe_mul(>z_252_3=fe#12,z_252_3=out,z2=fe#1,z2=fe#1,>z2=fe#1); */ +/* asm 2: fe_sq(>z2=t0,z2=t0,>z2=t0); */ +fe_sq(t0,z); for (i = 1;i < 1;++i) fe_sq(t0,t0); + +/* qhasm: z8 = z2^2^2 */ +/* asm 1: fe_sq(>z8=fe#2,z8=fe#2,>z8=fe#2); */ +/* asm 2: fe_sq(>z8=t1,z8=t1,>z8=t1); */ +fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1); + +/* qhasm: z9 = z1*z8 */ +/* asm 1: fe_mul(>z9=fe#2,z9=t1,z11=fe#1,z11=t0,z22=fe#3,z22=fe#3,>z22=fe#3); */ +/* asm 2: fe_sq(>z22=t2,z22=t2,>z22=t2); */ +fe_sq(t2,t0); for (i = 1;i < 1;++i) fe_sq(t2,t2); + +/* qhasm: z_5_0 = z9*z22 */ +/* asm 1: fe_mul(>z_5_0=fe#2,z_5_0=t1,z_10_5=fe#3,z_10_5=fe#3,>z_10_5=fe#3); */ +/* asm 2: fe_sq(>z_10_5=t2,z_10_5=t2,>z_10_5=t2); */ +fe_sq(t2,t1); for (i = 1;i < 5;++i) fe_sq(t2,t2); + +/* qhasm: z_10_0 = z_10_5*z_5_0 */ +/* asm 1: fe_mul(>z_10_0=fe#2,z_10_0=t1,z_20_10=fe#3,z_20_10=fe#3,>z_20_10=fe#3); */ +/* asm 2: fe_sq(>z_20_10=t2,z_20_10=t2,>z_20_10=t2); */ +fe_sq(t2,t1); for (i = 1;i < 10;++i) fe_sq(t2,t2); + +/* qhasm: z_20_0 = z_20_10*z_10_0 */ +/* asm 1: fe_mul(>z_20_0=fe#3,z_20_0=t2,z_40_20=fe#4,z_40_20=fe#4,>z_40_20=fe#4); */ +/* asm 2: fe_sq(>z_40_20=t3,z_40_20=t3,>z_40_20=t3); */ +fe_sq(t3,t2); for (i = 1;i < 20;++i) fe_sq(t3,t3); + +/* qhasm: z_40_0 = z_40_20*z_20_0 */ +/* asm 1: fe_mul(>z_40_0=fe#3,z_40_0=t2,z_50_10=fe#3,z_50_10=fe#3,>z_50_10=fe#3); */ +/* asm 2: fe_sq(>z_50_10=t2,z_50_10=t2,>z_50_10=t2); */ +fe_sq(t2,t2); for (i = 1;i < 10;++i) fe_sq(t2,t2); + +/* qhasm: z_50_0 = z_50_10*z_10_0 */ +/* asm 1: fe_mul(>z_50_0=fe#2,z_50_0=t1,z_100_50=fe#3,z_100_50=fe#3,>z_100_50=fe#3); */ +/* asm 2: fe_sq(>z_100_50=t2,z_100_50=t2,>z_100_50=t2); */ +fe_sq(t2,t1); for (i = 1;i < 50;++i) fe_sq(t2,t2); + +/* qhasm: z_100_0 = z_100_50*z_50_0 */ +/* asm 1: fe_mul(>z_100_0=fe#3,z_100_0=t2,z_200_100=fe#4,z_200_100=fe#4,>z_200_100=fe#4); */ +/* asm 2: fe_sq(>z_200_100=t3,z_200_100=t3,>z_200_100=t3); */ +fe_sq(t3,t2); for (i = 1;i < 100;++i) fe_sq(t3,t3); + +/* qhasm: z_200_0 = z_200_100*z_100_0 */ +/* asm 1: fe_mul(>z_200_0=fe#3,z_200_0=t2,z_250_50=fe#3,z_250_50=fe#3,>z_250_50=fe#3); */ +/* asm 2: fe_sq(>z_250_50=t2,z_250_50=t2,>z_250_50=t2); */ +fe_sq(t2,t2); for (i = 1;i < 50;++i) fe_sq(t2,t2); + +/* qhasm: z_250_0 = z_250_50*z_50_0 */ +/* asm 1: fe_mul(>z_250_0=fe#2,z_250_0=t1,z_255_5=fe#2,z_255_5=fe#2,>z_255_5=fe#2); */ +/* asm 2: fe_sq(>z_255_5=t1,z_255_5=t1,>z_255_5=t1); */ +fe_sq(t1,t1); for (i = 1;i < 5;++i) fe_sq(t1,t1); + +/* qhasm: z_255_21 = z_255_5*z11 */ +/* asm 1: fe_mul(>z_255_21=fe#12,z_255_21=out,> 5); + crypto_int64 a2 = 2097151 & (load_3(a + 5) >> 2); + crypto_int64 a3 = 2097151 & (load_4(a + 7) >> 7); + crypto_int64 a4 = 2097151 & (load_4(a + 10) >> 4); + crypto_int64 a5 = 2097151 & (load_3(a + 13) >> 1); + crypto_int64 a6 = 2097151 & (load_4(a + 15) >> 6); + crypto_int64 a7 = 2097151 & (load_3(a + 18) >> 3); + crypto_int64 a8 = 2097151 & load_3(a + 21); + crypto_int64 a9 = 2097151 & (load_4(a + 23) >> 5); + crypto_int64 a10 = 2097151 & (load_3(a + 26) >> 2); + crypto_int64 a11 = (load_4(a + 28) >> 7); + crypto_int64 b0 = 2097151 & load_3(b); + crypto_int64 b1 = 2097151 & (load_4(b + 2) >> 5); + crypto_int64 b2 = 2097151 & (load_3(b + 5) >> 2); + crypto_int64 b3 = 2097151 & (load_4(b + 7) >> 7); + crypto_int64 b4 = 2097151 & (load_4(b + 10) >> 4); + crypto_int64 b5 = 2097151 & (load_3(b + 13) >> 1); + crypto_int64 b6 = 2097151 & (load_4(b + 15) >> 6); + crypto_int64 b7 = 2097151 & (load_3(b + 18) >> 3); + crypto_int64 b8 = 2097151 & load_3(b + 21); + crypto_int64 b9 = 2097151 & (load_4(b + 23) >> 5); + crypto_int64 b10 = 2097151 & (load_3(b + 26) >> 2); + crypto_int64 b11 = (load_4(b + 28) >> 7); + crypto_int64 c0 = 2097151 & load_3(c); + crypto_int64 c1 = 2097151 & (load_4(c + 2) >> 5); + crypto_int64 c2 = 2097151 & (load_3(c + 5) >> 2); + crypto_int64 c3 = 2097151 & (load_4(c + 7) >> 7); + crypto_int64 c4 = 2097151 & (load_4(c + 10) >> 4); + crypto_int64 c5 = 2097151 & (load_3(c + 13) >> 1); + crypto_int64 c6 = 2097151 & (load_4(c + 15) >> 6); + crypto_int64 c7 = 2097151 & (load_3(c + 18) >> 3); + crypto_int64 c8 = 2097151 & load_3(c + 21); + crypto_int64 c9 = 2097151 & (load_4(c + 23) >> 5); + crypto_int64 c10 = 2097151 & (load_3(c + 26) >> 2); + crypto_int64 c11 = (load_4(c + 28) >> 7); + crypto_int64 s0; + crypto_int64 s1; + crypto_int64 s2; + crypto_int64 s3; + crypto_int64 s4; + crypto_int64 s5; + crypto_int64 s6; + crypto_int64 s7; + crypto_int64 s8; + crypto_int64 s9; + crypto_int64 s10; + crypto_int64 s11; + crypto_int64 s12; + crypto_int64 s13; + crypto_int64 s14; + crypto_int64 s15; + crypto_int64 s16; + crypto_int64 s17; + crypto_int64 s18; + crypto_int64 s19; + crypto_int64 s20; + crypto_int64 s21; + crypto_int64 s22; + crypto_int64 s23; + crypto_int64 carry0; + crypto_int64 carry1; + crypto_int64 carry2; + crypto_int64 carry3; + crypto_int64 carry4; + crypto_int64 carry5; + crypto_int64 carry6; + crypto_int64 carry7; + crypto_int64 carry8; + crypto_int64 carry9; + crypto_int64 carry10; + crypto_int64 carry11; + crypto_int64 carry12; + crypto_int64 carry13; + crypto_int64 carry14; + crypto_int64 carry15; + crypto_int64 carry16; + crypto_int64 carry17; + crypto_int64 carry18; + crypto_int64 carry19; + crypto_int64 carry20; + crypto_int64 carry21; + crypto_int64 carry22; + + s0 = c0 + a0*b0; + s1 = c1 + a0*b1 + a1*b0; + s2 = c2 + a0*b2 + a1*b1 + a2*b0; + s3 = c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0; + s4 = c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0; + s5 = c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0; + s6 = c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0; + s7 = c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0; + s8 = c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0; + s9 = c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0; + s10 = c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0; + s11 = c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0; + s12 = a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1; + s13 = a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2; + s14 = a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3; + s15 = a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4; + s16 = a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5; + s17 = a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6; + s18 = a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7; + s19 = a8*b11 + a9*b10 + a10*b9 + a11*b8; + s20 = a9*b11 + a10*b10 + a11*b9; + s21 = a10*b11 + a11*b10; + s22 = a11*b11; + s23 = 0; + + carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21; + carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21; + carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21; + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21; + carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21; + carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21; + carry18 = (s18 + (1<<20)) >> 21; s19 += carry18; s18 -= carry18 << 21; + carry20 = (s20 + (1<<20)) >> 21; s21 += carry20; s20 -= carry20 << 21; + carry22 = (s22 + (1<<20)) >> 21; s23 += carry22; s22 -= carry22 << 21; + + carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21; + carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21; + carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21; + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21; + carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21; + carry17 = (s17 + (1<<20)) >> 21; s18 += carry17; s17 -= carry17 << 21; + carry19 = (s19 + (1<<20)) >> 21; s20 += carry19; s19 -= carry19 << 21; + carry21 = (s21 + (1<<20)) >> 21; s22 += carry21; s21 -= carry21 << 21; + + s11 += s23 * 666643; + s12 += s23 * 470296; + s13 += s23 * 654183; + s14 -= s23 * 997805; + s15 += s23 * 136657; + s16 -= s23 * 683901; + s23 = 0; + + s10 += s22 * 666643; + s11 += s22 * 470296; + s12 += s22 * 654183; + s13 -= s22 * 997805; + s14 += s22 * 136657; + s15 -= s22 * 683901; + s22 = 0; + + s9 += s21 * 666643; + s10 += s21 * 470296; + s11 += s21 * 654183; + s12 -= s21 * 997805; + s13 += s21 * 136657; + s14 -= s21 * 683901; + s21 = 0; + + s8 += s20 * 666643; + s9 += s20 * 470296; + s10 += s20 * 654183; + s11 -= s20 * 997805; + s12 += s20 * 136657; + s13 -= s20 * 683901; + s20 = 0; + + s7 += s19 * 666643; + s8 += s19 * 470296; + s9 += s19 * 654183; + s10 -= s19 * 997805; + s11 += s19 * 136657; + s12 -= s19 * 683901; + s19 = 0; + + s6 += s18 * 666643; + s7 += s18 * 470296; + s8 += s18 * 654183; + s9 -= s18 * 997805; + s10 += s18 * 136657; + s11 -= s18 * 683901; + s18 = 0; + + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21; + carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21; + carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21; + + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21; + carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21; + + s5 += s17 * 666643; + s6 += s17 * 470296; + s7 += s17 * 654183; + s8 -= s17 * 997805; + s9 += s17 * 136657; + s10 -= s17 * 683901; + s17 = 0; + + s4 += s16 * 666643; + s5 += s16 * 470296; + s6 += s16 * 654183; + s7 -= s16 * 997805; + s8 += s16 * 136657; + s9 -= s16 * 683901; + s16 = 0; + + s3 += s15 * 666643; + s4 += s15 * 470296; + s5 += s15 * 654183; + s6 -= s15 * 997805; + s7 += s15 * 136657; + s8 -= s15 * 683901; + s15 = 0; + + s2 += s14 * 666643; + s3 += s14 * 470296; + s4 += s14 * 654183; + s5 -= s14 * 997805; + s6 += s14 * 136657; + s7 -= s14 * 683901; + s14 = 0; + + s1 += s13 * 666643; + s2 += s13 * 470296; + s3 += s13 * 654183; + s4 -= s13 * 997805; + s5 += s13 * 136657; + s6 -= s13 * 683901; + s13 = 0; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21; + carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21; + carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21; + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + + carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21; + carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21; + carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21; + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21; + carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21; + carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21; + carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21; + carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21; + carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21; + carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21; + carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21; + carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21; + carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21; + carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21; + carry11 = s11 >> 21; s12 += carry11; s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21; + carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21; + carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21; + carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21; + carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21; + carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21; + carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21; + carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21; + carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21; + carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21; + carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21; + + s[0] = s0 >> 0; + s[1] = s0 >> 8; + s[2] = (s0 >> 16) | (s1 << 5); + s[3] = s1 >> 3; + s[4] = s1 >> 11; + s[5] = (s1 >> 19) | (s2 << 2); + s[6] = s2 >> 6; + s[7] = (s2 >> 14) | (s3 << 7); + s[8] = s3 >> 1; + s[9] = s3 >> 9; + s[10] = (s3 >> 17) | (s4 << 4); + s[11] = s4 >> 4; + s[12] = s4 >> 12; + s[13] = (s4 >> 20) | (s5 << 1); + s[14] = s5 >> 7; + s[15] = (s5 >> 15) | (s6 << 6); + s[16] = s6 >> 2; + s[17] = s6 >> 10; + s[18] = (s6 >> 18) | (s7 << 3); + s[19] = s7 >> 5; + s[20] = s7 >> 13; + s[21] = s8 >> 0; + s[22] = s8 >> 8; + s[23] = (s8 >> 16) | (s9 << 5); + s[24] = s9 >> 3; + s[25] = s9 >> 11; + s[26] = (s9 >> 19) | (s10 << 2); + s[27] = s10 >> 6; + s[28] = (s10 >> 14) | (s11 << 7); + s[29] = s11 >> 1; + s[30] = s11 >> 9; + s[31] = s11 >> 17; +} diff --git a/Sources/libsignal/curve25519/ed25519/sc_reduce.c b/Sources/libsignal/curve25519/ed25519/sc_reduce.c new file mode 100755 index 0000000..d01f5a5 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/sc_reduce.c @@ -0,0 +1,275 @@ +#include "sc.h" +#include "crypto_int64.h" +#include "crypto_uint32.h" +#include "crypto_uint64.h" + +static crypto_uint64 load_3(const unsigned char *in) +{ + crypto_uint64 result; + result = (crypto_uint64) in[0]; + result |= ((crypto_uint64) in[1]) << 8; + result |= ((crypto_uint64) in[2]) << 16; + return result; +} + +static crypto_uint64 load_4(const unsigned char *in) +{ + crypto_uint64 result; + result = (crypto_uint64) in[0]; + result |= ((crypto_uint64) in[1]) << 8; + result |= ((crypto_uint64) in[2]) << 16; + result |= ((crypto_uint64) in[3]) << 24; + return result; +} + +/* +Input: + s[0]+256*s[1]+...+256^63*s[63] = s + +Output: + s[0]+256*s[1]+...+256^31*s[31] = s mod l + where l = 2^252 + 27742317777372353535851937790883648493. + Overwrites s in place. +*/ + +void sc_reduce(unsigned char *s) +{ + crypto_int64 s0 = 2097151 & load_3(s); + crypto_int64 s1 = 2097151 & (load_4(s + 2) >> 5); + crypto_int64 s2 = 2097151 & (load_3(s + 5) >> 2); + crypto_int64 s3 = 2097151 & (load_4(s + 7) >> 7); + crypto_int64 s4 = 2097151 & (load_4(s + 10) >> 4); + crypto_int64 s5 = 2097151 & (load_3(s + 13) >> 1); + crypto_int64 s6 = 2097151 & (load_4(s + 15) >> 6); + crypto_int64 s7 = 2097151 & (load_3(s + 18) >> 3); + crypto_int64 s8 = 2097151 & load_3(s + 21); + crypto_int64 s9 = 2097151 & (load_4(s + 23) >> 5); + crypto_int64 s10 = 2097151 & (load_3(s + 26) >> 2); + crypto_int64 s11 = 2097151 & (load_4(s + 28) >> 7); + crypto_int64 s12 = 2097151 & (load_4(s + 31) >> 4); + crypto_int64 s13 = 2097151 & (load_3(s + 34) >> 1); + crypto_int64 s14 = 2097151 & (load_4(s + 36) >> 6); + crypto_int64 s15 = 2097151 & (load_3(s + 39) >> 3); + crypto_int64 s16 = 2097151 & load_3(s + 42); + crypto_int64 s17 = 2097151 & (load_4(s + 44) >> 5); + crypto_int64 s18 = 2097151 & (load_3(s + 47) >> 2); + crypto_int64 s19 = 2097151 & (load_4(s + 49) >> 7); + crypto_int64 s20 = 2097151 & (load_4(s + 52) >> 4); + crypto_int64 s21 = 2097151 & (load_3(s + 55) >> 1); + crypto_int64 s22 = 2097151 & (load_4(s + 57) >> 6); + crypto_int64 s23 = (load_4(s + 60) >> 3); + crypto_int64 carry0; + crypto_int64 carry1; + crypto_int64 carry2; + crypto_int64 carry3; + crypto_int64 carry4; + crypto_int64 carry5; + crypto_int64 carry6; + crypto_int64 carry7; + crypto_int64 carry8; + crypto_int64 carry9; + crypto_int64 carry10; + crypto_int64 carry11; + crypto_int64 carry12; + crypto_int64 carry13; + crypto_int64 carry14; + crypto_int64 carry15; + crypto_int64 carry16; + + s11 += s23 * 666643; + s12 += s23 * 470296; + s13 += s23 * 654183; + s14 -= s23 * 997805; + s15 += s23 * 136657; + s16 -= s23 * 683901; + s23 = 0; + + s10 += s22 * 666643; + s11 += s22 * 470296; + s12 += s22 * 654183; + s13 -= s22 * 997805; + s14 += s22 * 136657; + s15 -= s22 * 683901; + s22 = 0; + + s9 += s21 * 666643; + s10 += s21 * 470296; + s11 += s21 * 654183; + s12 -= s21 * 997805; + s13 += s21 * 136657; + s14 -= s21 * 683901; + s21 = 0; + + s8 += s20 * 666643; + s9 += s20 * 470296; + s10 += s20 * 654183; + s11 -= s20 * 997805; + s12 += s20 * 136657; + s13 -= s20 * 683901; + s20 = 0; + + s7 += s19 * 666643; + s8 += s19 * 470296; + s9 += s19 * 654183; + s10 -= s19 * 997805; + s11 += s19 * 136657; + s12 -= s19 * 683901; + s19 = 0; + + s6 += s18 * 666643; + s7 += s18 * 470296; + s8 += s18 * 654183; + s9 -= s18 * 997805; + s10 += s18 * 136657; + s11 -= s18 * 683901; + s18 = 0; + + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + carry12 = (s12 + (1<<20)) >> 21; s13 += carry12; s12 -= carry12 << 21; + carry14 = (s14 + (1<<20)) >> 21; s15 += carry14; s14 -= carry14 << 21; + carry16 = (s16 + (1<<20)) >> 21; s17 += carry16; s16 -= carry16 << 21; + + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + carry13 = (s13 + (1<<20)) >> 21; s14 += carry13; s13 -= carry13 << 21; + carry15 = (s15 + (1<<20)) >> 21; s16 += carry15; s15 -= carry15 << 21; + + s5 += s17 * 666643; + s6 += s17 * 470296; + s7 += s17 * 654183; + s8 -= s17 * 997805; + s9 += s17 * 136657; + s10 -= s17 * 683901; + s17 = 0; + + s4 += s16 * 666643; + s5 += s16 * 470296; + s6 += s16 * 654183; + s7 -= s16 * 997805; + s8 += s16 * 136657; + s9 -= s16 * 683901; + s16 = 0; + + s3 += s15 * 666643; + s4 += s15 * 470296; + s5 += s15 * 654183; + s6 -= s15 * 997805; + s7 += s15 * 136657; + s8 -= s15 * 683901; + s15 = 0; + + s2 += s14 * 666643; + s3 += s14 * 470296; + s4 += s14 * 654183; + s5 -= s14 * 997805; + s6 += s14 * 136657; + s7 -= s14 * 683901; + s14 = 0; + + s1 += s13 * 666643; + s2 += s13 * 470296; + s3 += s13 * 654183; + s4 -= s13 * 997805; + s5 += s13 * 136657; + s6 -= s13 * 683901; + s13 = 0; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = (s0 + (1<<20)) >> 21; s1 += carry0; s0 -= carry0 << 21; + carry2 = (s2 + (1<<20)) >> 21; s3 += carry2; s2 -= carry2 << 21; + carry4 = (s4 + (1<<20)) >> 21; s5 += carry4; s4 -= carry4 << 21; + carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21; + carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21; + carry10 = (s10 + (1<<20)) >> 21; s11 += carry10; s10 -= carry10 << 21; + + carry1 = (s1 + (1<<20)) >> 21; s2 += carry1; s1 -= carry1 << 21; + carry3 = (s3 + (1<<20)) >> 21; s4 += carry3; s3 -= carry3 << 21; + carry5 = (s5 + (1<<20)) >> 21; s6 += carry5; s5 -= carry5 << 21; + carry7 = (s7 + (1<<20)) >> 21; s8 += carry7; s7 -= carry7 << 21; + carry9 = (s9 + (1<<20)) >> 21; s10 += carry9; s9 -= carry9 << 21; + carry11 = (s11 + (1<<20)) >> 21; s12 += carry11; s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21; + carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21; + carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21; + carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21; + carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21; + carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21; + carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21; + carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21; + carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21; + carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21; + carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21; + carry11 = s11 >> 21; s12 += carry11; s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21; + carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21; + carry2 = s2 >> 21; s3 += carry2; s2 -= carry2 << 21; + carry3 = s3 >> 21; s4 += carry3; s3 -= carry3 << 21; + carry4 = s4 >> 21; s5 += carry4; s4 -= carry4 << 21; + carry5 = s5 >> 21; s6 += carry5; s5 -= carry5 << 21; + carry6 = s6 >> 21; s7 += carry6; s6 -= carry6 << 21; + carry7 = s7 >> 21; s8 += carry7; s7 -= carry7 << 21; + carry8 = s8 >> 21; s9 += carry8; s8 -= carry8 << 21; + carry9 = s9 >> 21; s10 += carry9; s9 -= carry9 << 21; + carry10 = s10 >> 21; s11 += carry10; s10 -= carry10 << 21; + + s[0] = s0 >> 0; + s[1] = s0 >> 8; + s[2] = (s0 >> 16) | (s1 << 5); + s[3] = s1 >> 3; + s[4] = s1 >> 11; + s[5] = (s1 >> 19) | (s2 << 2); + s[6] = s2 >> 6; + s[7] = (s2 >> 14) | (s3 << 7); + s[8] = s3 >> 1; + s[9] = s3 >> 9; + s[10] = (s3 >> 17) | (s4 << 4); + s[11] = s4 >> 4; + s[12] = s4 >> 12; + s[13] = (s4 >> 20) | (s5 << 1); + s[14] = s5 >> 7; + s[15] = (s5 >> 15) | (s6 << 6); + s[16] = s6 >> 2; + s[17] = s6 >> 10; + s[18] = (s6 >> 18) | (s7 << 3); + s[19] = s7 >> 5; + s[20] = s7 >> 13; + s[21] = s8 >> 0; + s[22] = s8 >> 8; + s[23] = (s8 >> 16) | (s9 << 5); + s[24] = s9 >> 3; + s[25] = s9 >> 11; + s[26] = (s9 >> 19) | (s10 << 2); + s[27] = s10 >> 6; + s[28] = (s10 >> 14) | (s11 << 7); + s[29] = s11 >> 1; + s[30] = s11 >> 9; + s[31] = s11 >> 17; +} diff --git a/Sources/libsignal/curve25519/ed25519/sign.c b/Sources/libsignal/curve25519/ed25519/sign.c new file mode 100755 index 0000000..de53742 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/sign.c @@ -0,0 +1,41 @@ +#include +#include "crypto_sign.h" +#include "crypto_hash_sha512.h" +#include "ge.h" +#include "sc.h" + +int crypto_sign( + unsigned char *sm,unsigned long long *smlen, + const unsigned char *m,unsigned long long mlen, + const unsigned char *sk +) +{ + unsigned char pk[32]; + unsigned char az[64]; + unsigned char nonce[64]; + unsigned char hram[64]; + ge_p3 R; + + memmove(pk,sk + 32,32); + + crypto_hash_sha512(az,sk,32); + az[0] &= 248; + az[31] &= 63; + az[31] |= 64; + + *smlen = mlen + 64; + memmove(sm + 64,m,mlen); + memmove(sm + 32,az + 32,32); + crypto_hash_sha512(nonce,sm + 32,mlen + 32); + memmove(sm + 32,pk,32); + + sc_reduce(nonce); + ge_scalarmult_base(&R,nonce); + ge_p3_tobytes(sm,&R); + + crypto_hash_sha512(hram,sm,mlen + 64); + sc_reduce(hram); + sc_muladd(sm + 32,hram,az,nonce); + + return 0; +} diff --git a/Sources/libsignal/curve25519/ed25519/sqrtm1.h b/Sources/libsignal/curve25519/ed25519/sqrtm1.h new file mode 100755 index 0000000..d8caa23 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/sqrtm1.h @@ -0,0 +1 @@ +-32595792,-7943725,9377950,3500415,12389472,-272473,-25146209,-2005654,326686,11406482 diff --git a/Sources/libsignal/curve25519/ed25519/tests/internal_fast_tests.c b/Sources/libsignal/curve25519/ed25519/tests/internal_fast_tests.c new file mode 100755 index 0000000..6566e25 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/tests/internal_fast_tests.c @@ -0,0 +1,469 @@ +#include +#include +#include +#include "crypto_hash_sha512.h" +#include "keygen.h" +#include "curve_sigs.h" +#include "xeddsa.h" +#include "crypto_additions.h" +#include "ge.h" +#include "utility.h" +#include "gen_crypto_additions.h" +#include "gen_x.h" +#include "internal_fast_tests.h" +#include + + +#define ERROR(...) do {if (!silent) { printf(__VA_ARGS__); abort(); } else return -1; } while (0) +#define INFO(...) do {if (!silent) printf(__VA_ARGS__);} while (0) + +#define TEST(msg, cond) \ + do { \ + if ((cond)) { \ + INFO("%s good\n", msg); \ + } \ + else { \ + ERROR("%s BAD!!!\n", msg); \ + } \ + } while (0) + + +int sha512_fast_test(int silent) +{ + unsigned char sha512_input[112] = + "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu"; + unsigned char sha512_correct_output[64] = + { + 0x8E, 0x95, 0x9B, 0x75, 0xDA, 0xE3, 0x13, 0xDA, + 0x8C, 0xF4, 0xF7, 0x28, 0x14, 0xFC, 0x14, 0x3F, + 0x8F, 0x77, 0x79, 0xC6, 0xEB, 0x9F, 0x7F, 0xA1, + 0x72, 0x99, 0xAE, 0xAD, 0xB6, 0x88, 0x90, 0x18, + 0x50, 0x1D, 0x28, 0x9E, 0x49, 0x00, 0xF7, 0xE4, + 0x33, 0x1B, 0x99, 0xDE, 0xC4, 0xB5, 0x43, 0x3A, + 0xC7, 0xD3, 0x29, 0xEE, 0xB6, 0xDD, 0x26, 0x54, + 0x5E, 0x96, 0xE5, 0x5B, 0x87, 0x4B, 0xE9, 0x09 + }; + unsigned char sha512_actual_output[64]; + + crypto_hash_sha512(sha512_actual_output, sha512_input, sizeof(sha512_input)); + TEST("SHA512 #1", memcmp(sha512_actual_output, sha512_correct_output, 64) == 0); + + sha512_input[111] ^= 1; + + crypto_hash_sha512(sha512_actual_output, sha512_input, sizeof(sha512_input)); + TEST("SHA512 #2", memcmp(sha512_actual_output, sha512_correct_output, 64) != 0); + + return 0; +} + +int strict_fast_test(int silent) +{ + unsigned char unreduced1[32] = { + 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, + }; + unsigned char unreduced2[32] = { + 0xED, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, + }; + unsigned char unreduced3[32] = { + 0xEC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, + }; + + unsigned char q[32] = { + 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, + 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, + }; + unsigned char qminus1[32] = { + 0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, + 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, + }; + unsigned char qplus1[32] = { + 0xee, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, + 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, + }; + + TEST("fe_isreduced", + (fe_isreduced(unreduced1) == 0) && + (fe_isreduced(unreduced2) == 0) && + (fe_isreduced(unreduced3) == 1) + ); + + TEST("sc_isreduced", + (sc_isreduced(q) == 0) && + (sc_isreduced(qminus1) == 1) && + (sc_isreduced(qplus1) == 0) + ); + return 0; +} + +int ge_fast_test(int silent) +{ + + const unsigned char B_bytes[] = { + 0x58, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + }; + + const unsigned char misc_bytes[] = { + 0x57, 0x17, 0xfa, 0xce, 0xca, 0xb9, 0xdf, 0x0e, + 0x90, 0x67, 0xaa, 0x46, 0xba, 0x83, 0x2f, 0xeb, + 0x1c, 0x49, 0xd0, 0x21, 0xb1, 0x33, 0xff, 0x11, + 0xc9, 0x7a, 0xb8, 0xcf, 0xe3, 0x29, 0x46, 0x17, + }; + + unsigned char q_scalar[32] = { + 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, + 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, + }; + + unsigned char c_scalar[32] = { + 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + }; + + unsigned char neutral_bytes[] = { + 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + }; + +/* unsigned char one_scalar[32] = { + 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + }; + + const unsigned char B_bytes[] = { + 0x58, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, + }; + */ + + ge_p3 point1, point2, B_point, misc_point, miscneg_point; + + unsigned char output1[32], output2[32]; + + if (ge_frombytes_negate_vartime(&B_point, B_bytes) != 0) + TEST("Failure to parse point #1", 0); + if (ge_frombytes_negate_vartime(&miscneg_point, misc_bytes) != 0) + TEST("Failure to parse point #2", 0); + ge_neg(&B_point, &B_point); + ge_neg(&misc_point, &miscneg_point); + + /* q*B == neutral */ + ge_scalarmult_base(&point1, q_scalar); + ge_scalarmult(&point2, q_scalar, &B_point); + ge_p3_tobytes(output1, &point1); + ge_p3_tobytes(output2, &point2); + + TEST("qB == qB", memcmp(output1, output2, 32) == 0 && memcmp(output1, neutral_bytes, 32) == 0); + TEST("qB isneutral", ge_isneutral(&point1 ) && ge_isneutral(&point2) && !ge_isneutral(&B_point)); + + /* cB == cB, cX == cX */ + ge_scalarmult_cofactor(&point1, &B_point); + ge_scalarmult_base(&point2, c_scalar); + ge_p3_tobytes(output1, &point1); + ge_p3_tobytes(output2, &point2); + TEST("cB == cB", memcmp(output1, output2, 32) == 0); + ge_scalarmult_cofactor(&point1, &misc_point); + ge_scalarmult(&point2, c_scalar, &misc_point); + ge_p3_tobytes(output1, &point1); + ge_p3_tobytes(output2, &point2); + TEST("cX == cX", memcmp(output1, output2, 32) == 0); + + /* */ + ge_p3_add(&point1, &misc_point, &miscneg_point); + TEST("X + -X isneutral", ge_isneutral(&point1)); + + return 0; +} + +int elligator_fast_test(int silent) +{ + unsigned char elligator_correct_output[32] = + { + 0x5f, 0x35, 0x20, 0x00, 0x1c, 0x6c, 0x99, 0x36, + 0xa3, 0x12, 0x06, 0xaf, 0xe7, 0xc7, 0xac, 0x22, + 0x4e, 0x88, 0x61, 0x61, 0x9b, 0xf9, 0x88, 0x72, + 0x44, 0x49, 0x15, 0x89, 0x9d, 0x95, 0xf4, 0x6e + }; + + unsigned char hashtopoint_correct_output1[32] = + { + 0xce, 0x89, 0x9f, 0xb2, 0x8f, 0xf7, 0x20, 0x91, + 0x5e, 0x14, 0xf5, 0xb7, 0x99, 0x08, 0xab, 0x17, + 0xaa, 0x2e, 0xe2, 0x45, 0xb4, 0xfc, 0x2b, 0xf6, + 0x06, 0x36, 0x29, 0x40, 0xed, 0x7d, 0xe7, 0xed + }; + + unsigned char hashtopoint_correct_output2[32] = + { + 0xa0, 0x35, 0xbb, 0xa9, 0x4d, 0x30, 0x55, 0x33, + 0x0d, 0xce, 0xc2, 0x7f, 0x83, 0xde, 0x79, 0xd0, + 0x89, 0x67, 0x72, 0x4c, 0x07, 0x8d, 0x68, 0x9d, + 0x61, 0x52, 0x1d, 0xf9, 0x2c, 0x5c, 0xba, 0x77 + }; + + int count; + fe in, out; + unsigned char bytes[32]; + fe_0(in); + fe_0(out); + for (count = 0; count < 32; count++) { + bytes[count] = count; + } + fe_frombytes(in, bytes); + elligator(out, in); + fe_tobytes(bytes, out); + TEST("Elligator vector", memcmp(bytes, elligator_correct_output, 32) == 0); + + /* Elligator(0) == 0 test */ + fe_0(in); + elligator(out, in); + TEST("Elligator(0) == 0", memcmp(in, out, 32) == 0); + + /* ge_montx_to_p3(0) -> order2 point test */ + fe one, negone, zero; + fe_1(one); + fe_0(zero); + fe_sub(negone, zero, one); + ge_p3 p3; + ge_montx_to_p3(&p3, zero, 0); + TEST("ge_montx_to_p3(0) == order 2 point", + fe_isequal(p3.X, zero) && + fe_isequal(p3.Y, negone) && + fe_isequal(p3.Z, one) && + fe_isequal(p3.T, zero)); + + /* Hash to point vector test */ + unsigned char htp[32]; + + for (count=0; count < 32; count++) { + htp[count] = count; + } + + hash_to_point(&p3, htp, 32); + ge_p3_tobytes(htp, &p3); + TEST("hash_to_point #1", memcmp(htp, hashtopoint_correct_output1, 32) == 0); + + for (count=0; count < 32; count++) { + htp[count] = count+1; + } + + hash_to_point(&p3, htp, 32); + ge_p3_tobytes(htp, &p3); + TEST("hash_to_point #2", memcmp(htp, hashtopoint_correct_output2, 32) == 0); + + return 0; +} + +int curvesigs_fast_test(int silent) +{ + unsigned char signature_correct[64] = { + 0xcf, 0x87, 0x3d, 0x03, 0x79, 0xac, 0x20, 0xe8, + 0x89, 0x3e, 0x55, 0x67, 0xee, 0x0f, 0x89, 0x51, + 0xf8, 0xdb, 0x84, 0x0d, 0x26, 0xb2, 0x43, 0xb4, + 0x63, 0x52, 0x66, 0x89, 0xd0, 0x1c, 0xa7, 0x18, + 0xac, 0x18, 0x9f, 0xb1, 0x67, 0x85, 0x74, 0xeb, + 0xdd, 0xe5, 0x69, 0x33, 0x06, 0x59, 0x44, 0x8b, + 0x0b, 0xd6, 0xc1, 0x97, 0x3f, 0x7d, 0x78, 0x0a, + 0xb3, 0x95, 0x18, 0x62, 0x68, 0x03, 0xd7, 0x82, + }; + const int MSG_LEN = 200; + unsigned char privkey[32]; + unsigned char pubkey[32]; + unsigned char signature[64]; + unsigned char msg[MSG_LEN]; + unsigned char random[64]; + + memset(privkey, 0, 32); + memset(pubkey, 0, 32); + memset(signature, 0, 64); + memset(msg, 0, MSG_LEN); + memset(random, 0, 64); + + privkey[8] = 189; /* just so there's some bits set */ + sc_clamp(privkey); + + /* Signature vector test */ + curve25519_keygen(pubkey, privkey); + + curve25519_sign(signature, privkey, msg, MSG_LEN, random); + + TEST("Curvesig sign", memcmp(signature, signature_correct, 64) == 0); + TEST("Curvesig verify #1", curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0); + signature[0] ^= 1; + TEST("Curvesig verify #2", curve25519_verify(signature, pubkey, msg, MSG_LEN) != 0); + return 0; +} + +int xeddsa_fast_test(int silent) +{ + unsigned char signature_correct[64] = { + 0x11, 0xc7, 0xf3, 0xe6, 0xc4, 0xdf, 0x9e, 0x8a, + 0x51, 0x50, 0xe1, 0xdb, 0x3b, 0x30, 0xf9, 0x2d, + 0xe3, 0xa3, 0xb3, 0xaa, 0x43, 0x86, 0x56, 0x54, + 0x5f, 0xa7, 0x39, 0x0f, 0x4b, 0xcc, 0x7b, 0xb2, + 0x6c, 0x43, 0x1d, 0x9e, 0x90, 0x64, 0x3e, 0x4f, + 0x0e, 0xaa, 0x0e, 0x9c, 0x55, 0x77, 0x66, 0xfa, + 0x69, 0xad, 0xa5, 0x76, 0xd6, 0x3d, 0xca, 0xf2, + 0xac, 0x32, 0x6c, 0x11, 0xd0, 0xb9, 0x77, 0x02, + }; + const int MSG_LEN = 200; + unsigned char privkey[32]; + unsigned char pubkey[32]; + unsigned char signature[64]; + unsigned char msg[MSG_LEN]; + unsigned char random[64]; + + memset(privkey, 0, 32); + memset(pubkey, 0, 32); + memset(signature, 0, 64); + memset(msg, 0, MSG_LEN); + memset(random, 0, 64); + + privkey[8] = 189; /* just so there's some bits set */ + sc_clamp(privkey); + + /* Signature vector test */ + curve25519_keygen(pubkey, privkey); + + xed25519_sign(signature, privkey, msg, MSG_LEN, random); + TEST("XEdDSA sign", memcmp(signature, signature_correct, 64) == 0); + TEST("XEdDSA verify #1", xed25519_verify(signature, pubkey, msg, MSG_LEN) == 0); + signature[0] ^= 1; + TEST("XEdDSA verify #2", xed25519_verify(signature, pubkey, msg, MSG_LEN) != 0); + memset(pubkey, 0xFF, 32); + TEST("XEdDSA verify #3", xed25519_verify(signature, pubkey, msg, MSG_LEN) != 0); + return 0; +} + +int generalized_xeddsa_fast_test(int silent) +{ + unsigned char signature1[64]; + unsigned char signature2[64]; + unsigned char privkey[32]; + unsigned char pubkey[32]; + unsigned char msg1[1000]; + unsigned char msg2[1000]; + unsigned char random[64]; + + memset(signature1, 0, 64); + memset(signature2, 0, 64); + memset(privkey, 0xF0, 32); + memset(pubkey, 2, 32); + memset(msg1, 0x10, 1000); + memset(msg2, 0x20, 1000); + memset(random, 0xBC, 64); + + sc_clamp(privkey); + curve25519_keygen(pubkey, privkey); + + msg2[0] = 1; + TEST("generalized xeddsa sign #1", generalized_xeddsa_25519_sign(signature1, privkey, msg1, 100, random, NULL, 0) == 0); + TEST("generalized xeddsa sign #2", generalized_xeddsa_25519_sign(signature2, privkey, msg2, 100, random, NULL, 0) == 0); + + TEST("generalized (old) xeddsa verify #1", xed25519_verify(signature1, pubkey, msg1, 100) == 0); + TEST("generalized (old) xeddsa verify #2", xed25519_verify(signature2, pubkey, msg2, 100) == 0); + TEST("generalized (old) xeddsa verify #3", xed25519_verify(signature1, pubkey, msg2, 100) != 0); + TEST("generalized (old) xeddsa verify #4", xed25519_verify(signature2, pubkey, msg1, 100) != 0); + + TEST("generalized xeddsa verify #1", generalized_xeddsa_25519_verify(signature1, pubkey, msg1, 100, NULL, 0) == 0); + TEST("generalized xeddsa verify #2", generalized_xeddsa_25519_verify(signature2, pubkey, msg2, 100, NULL, 0) == 0); + TEST("generalized xeddsa verify #3", generalized_xeddsa_25519_verify(signature1, pubkey, msg2, 100, NULL, 0) != 0); + TEST("generalized xeddsa verify #4", generalized_xeddsa_25519_verify(signature2, pubkey, msg1, 100, NULL, 0) != 0); + return 0; +} + +int generalized_xveddsa_fast_test(int silent) +{ + unsigned char signature1[96]; + unsigned char signature2[96]; + unsigned char privkey[32]; + unsigned char pubkey[32]; + unsigned char msg1[1000]; + unsigned char msg2[1000]; + unsigned char random[64]; + unsigned char vrf[32]; + + memset(signature1, 0, 64); + memset(signature2, 0, 64); + memset(privkey, 1, 32); + memset(pubkey, 2, 32); + memset(msg1, 0x11, 1000); + memset(msg2, 0x22, 1000); + memset(random, 0xAB, 64); + + sc_clamp(privkey); + curve25519_keygen(pubkey, privkey); + + msg2[0] ^= 1; + TEST("generalized xveddsa sign #1", generalized_xveddsa_25519_sign(signature1, privkey, msg1, 100, random, NULL, 0) == 0); + TEST("generalized xveddsa sign #2", generalized_xveddsa_25519_sign(signature2, privkey, msg2, 100, random, (unsigned char*)"abc", 3) == 0); + + TEST("generalized xveddsa verify #1", generalized_xveddsa_25519_verify(vrf, signature1, pubkey, msg1, 100, NULL, 0) == 0); + TEST("generalized xveddsa verify #2", generalized_xveddsa_25519_verify(vrf, signature2, pubkey, msg2, 100, (unsigned char*)"abc", 3) == 0); + TEST("generalized xveddsa verify #3", generalized_xveddsa_25519_verify(vrf, signature1, pubkey, msg2, 100, NULL, 0) != 0); + TEST("generalized xveddsa verify #4", generalized_xveddsa_25519_verify(vrf, signature2, pubkey, msg1, 100, (unsigned char*)"abc", 3) != 0); + + + unsigned char signature3[96]; + unsigned char vrf3[96]; + random[0] ^= 1; + TEST("generalized xveddsa sign #3", generalized_xveddsa_25519_sign(signature3, privkey, msg1, 100, random, NULL, 0) == 0); + TEST("generalized xveddsa verify #5", generalized_xveddsa_25519_verify(vrf, signature1, pubkey, msg1, 100, NULL, 0) == 0); + TEST("generalized xveddsa verify #6", generalized_xveddsa_25519_verify(vrf3, signature3, pubkey, msg1, 100, NULL, 0) == 0); + TEST("generalized xveddsa VRFs equal", memcmp(vrf, vrf3, 32) == 0); + TEST("generalized xveddsa Kv equal", memcmp(signature1+0, signature3+0, 32) == 0); + TEST("generalized xveddsa h not equal", memcmp(signature1+32, signature3+32, 32) != 0); + TEST("generalized xveddsa s not equal", memcmp(signature1+64, signature3+64, 32) != 0); + return 0; +} + +int all_fast_tests(int silent) +{ + int result; + if ((result = sha512_fast_test(silent)) != 0) + return -1; + if ((result = strict_fast_test(silent)) != 0) + return -2; + if ((result = ge_fast_test(silent)) != 0) + return -3; + if ((result = elligator_fast_test(silent)) != 0) + return -3; + if ((result = curvesigs_fast_test(silent)) != 0) + return -4; + if ((result = xeddsa_fast_test(silent)) != 0) + return -5; + if ((result = generalized_xeddsa_fast_test(silent)) != 0) + return -6; + if ((result = generalized_xveddsa_fast_test(silent)) != 0) + return -7; + + return 0; +} + diff --git a/Sources/libsignal/curve25519/ed25519/tests/internal_fast_tests.h b/Sources/libsignal/curve25519/ed25519/tests/internal_fast_tests.h new file mode 100755 index 0000000..47f1175 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/tests/internal_fast_tests.h @@ -0,0 +1,19 @@ +#ifndef __INTERNAL_FAST_TESTS_H__ +#define __INTERNAL_FAST_TESTS_H__ + +/* silent = 0 : prints info+error messages to stdout, abort() on test failure + * silent = 1 : returns 0 for success, anything else for failure + */ + +int sha512_fast_test(int silent); +int strict_fast_test(int silent); +int elligator_fast_test(int silent); +int curvesigs_fast_test(int silent); +int xeddsa_fast_test(int silent); +int vxeddsa_fast_test(int silent); +int generalized_xeddsa_fast_test(int silent); +int generalized_xveddsa_fast_test(int silent); + +int all_fast_tests(int silent); + +#endif diff --git a/Sources/libsignal/curve25519/ed25519/tests/internal_slow_tests.c b/Sources/libsignal/curve25519/ed25519/tests/internal_slow_tests.c new file mode 100755 index 0000000..740ddbe --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/tests/internal_slow_tests.c @@ -0,0 +1,371 @@ +#include +#include +#include +#include "crypto_hash_sha512.h" +#include "keygen.h" +#include "curve_sigs.h" +#include "xeddsa.h" +#include "crypto_additions.h" +#include "ge.h" +#include "utility.h" +#include "gen_x.h" +#include "internal_slow_tests.h" +#include + + +#define ERROR(...) do {if (!silent) { printf(__VA_ARGS__); abort(); } else return -1; } while (0) +#define INFO(...) do {if (!silent) printf(__VA_ARGS__);} while (0) + +#define TEST(msg, cond) \ + do { \ + if ((cond)) { \ + INFO("%s good\n", msg); \ + } \ + else { \ + ERROR("%s BAD!!!\n", msg); \ + } \ + } while (0) + + + +int curvesigs_slow_test(int silent, int iterations) +{ + + unsigned char signature_10k_correct[64] = { + 0xfc, 0xba, 0x55, 0xc4, 0x85, 0x4a, 0x42, 0x25, + 0x19, 0xab, 0x08, 0x8d, 0xfe, 0xb5, 0x13, 0xb6, + 0x0d, 0x24, 0xbb, 0x16, 0x27, 0x55, 0x71, 0x48, + 0xdd, 0x20, 0xb1, 0xcd, 0x2a, 0xd6, 0x7e, 0x35, + 0xef, 0x33, 0x4c, 0x7b, 0x6d, 0x94, 0x6f, 0x52, + 0xec, 0x43, 0xd7, 0xe6, 0x35, 0x24, 0xcd, 0x5b, + 0x5d, 0xdc, 0xb2, 0x32, 0xc6, 0x22, 0x53, 0xf3, + 0x38, 0x02, 0xf8, 0x28, 0x28, 0xc5, 0x65, 0x05, + }; + + int count; + const int MSG_LEN = 200; + unsigned char privkey[32]; + unsigned char pubkey[32]; + unsigned char signature[64]; + unsigned char msg[MSG_LEN]; + unsigned char random[64]; + + memset(privkey, 0, 32); + memset(pubkey, 0, 32); + memset(signature, 0, 64); + memset(msg, 0, MSG_LEN); + memset(random, 0, 64); + + /* Signature random test */ + INFO("Pseudorandom curvesigs...\n"); + for (count = 1; count <= iterations; count++) { + unsigned char b[64]; + crypto_hash_sha512(b, signature, 64); + memmove(privkey, b, 32); + crypto_hash_sha512(b, privkey, 32); + memmove(random, b, 64); + + sc_clamp(privkey); + curve25519_keygen(pubkey, privkey); + + curve25519_sign(signature, privkey, msg, MSG_LEN, random); + + if (curve25519_verify(signature, pubkey, msg, MSG_LEN) != 0) + ERROR("Curvesig verify failure #1 %d\n", count); + + if (b[63] & 1) + signature[count % 64] ^= 1; + else + msg[count % MSG_LEN] ^= 1; + if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0) + ERROR("Curvesig verify failure #2 %d\n", count); + + if (count == 10000) { + if (memcmp(signature, signature_10k_correct, 64) != 0) + ERROR("Curvesig signature 10K doesn't match %d\n", count); + } + if (count == 100000) + print_bytes("100K curvesigs", signature, 64); + if (count == 1000000) + print_bytes("1M curvesigs", signature, 64); + if (count == 10000000) + print_bytes("10M curvesigs", signature, 64); + } + INFO("good\n"); + return 0; +} + +int xeddsa_slow_test(int silent, int iterations) +{ + + unsigned char signature_10k_correct[64] = { + 0x15, 0x29, 0x03, 0x38, 0x66, 0x16, 0xcd, 0x26, + 0xbb, 0x3e, 0xec, 0xe2, 0x9f, 0x72, 0xa2, 0x5c, + 0x7d, 0x05, 0xc9, 0xcb, 0x84, 0x3f, 0x92, 0x96, + 0xb3, 0xfb, 0xb9, 0xdd, 0xd6, 0xed, 0x99, 0x04, + 0xc1, 0xa8, 0x02, 0x16, 0xcf, 0x49, 0x3f, 0xf1, + 0xbe, 0x69, 0xf9, 0xf1, 0xcc, 0x16, 0xd7, 0xdc, + 0x6e, 0xd3, 0x78, 0xaa, 0x04, 0xeb, 0x71, 0x51, + 0x9d, 0xe8, 0x7a, 0x5b, 0xd8, 0x49, 0x7b, 0x05, + }; + + int count; + const int MSG_LEN = 200; + unsigned char privkey[32]; + unsigned char pubkey[32]; + unsigned char signature[96]; + unsigned char msg[MSG_LEN]; + unsigned char random[64]; + + memset(privkey, 0, 32); + memset(pubkey, 0, 32); + memset(signature, 1, 64); + memset(msg, 0, MSG_LEN); + memset(random, 0, 64); + + /* Signature random test */ + INFO("Pseudorandom XEdDSA...\n"); + for (count = 1; count <= iterations; count++) { + unsigned char b[64]; + crypto_hash_sha512(b, signature, 64); + memmove(privkey, b, 32); + crypto_hash_sha512(b, privkey, 32); + memmove(random, b, 64); + + sc_clamp(privkey); + curve25519_keygen(pubkey, privkey); + + xed25519_sign(signature, privkey, msg, MSG_LEN, random); + + if (xed25519_verify(signature, pubkey, msg, MSG_LEN) != 0) + ERROR("XEdDSA verify failure #1 %d\n", count); + + if (b[63] & 1) + signature[count % 64] ^= 1; + else + msg[count % MSG_LEN] ^= 1; + if (xed25519_verify(signature, pubkey, msg, MSG_LEN) == 0) + ERROR("XEdDSA verify failure #2 %d\n", count); + + if (count == 10000) { + if (memcmp(signature, signature_10k_correct, 64) != 0) + ERROR("XEDSA signature 10K doesn't match %d\n", count); + } + if (count == 100000) + print_bytes("100K XEdDSA", signature, 64); + if (count == 1000000) + print_bytes("1M XEdDSA", signature, 64); + if (count == 10000000) + print_bytes("10M XEdDSA", signature, 64); + } + INFO("good\n"); + return 0; +} + +int xeddsa_to_curvesigs_slow_test(int silent, int iterations) +{ + unsigned char signature_10k_correct[64] = { + 0x33, 0x50, 0xa8, 0x68, 0xcd, 0x9e, 0x74, 0x99, + 0xa3, 0x5c, 0x33, 0x75, 0x2b, 0x22, 0x03, 0xf8, + 0xb5, 0x0f, 0xea, 0x8c, 0x33, 0x1c, 0x68, 0x8b, + 0xbb, 0xf3, 0x31, 0xcf, 0x7c, 0x42, 0x37, 0x35, + 0xa0, 0x0e, 0x15, 0xb8, 0x5d, 0x2b, 0xe1, 0xa2, + 0x03, 0x77, 0x94, 0x3d, 0x13, 0x5c, 0xd4, 0x9b, + 0x6a, 0x31, 0xf4, 0xdc, 0xfe, 0x24, 0xad, 0x54, + 0xeb, 0xd2, 0x98, 0x47, 0xf1, 0xcc, 0xbf, 0x0d + + }; + + int count; + const int MSG_LEN = 200; + unsigned char privkey[32]; + unsigned char pubkey[32]; + unsigned char signature[96]; + unsigned char msg[MSG_LEN]; + unsigned char random[64]; + + memset(privkey, 0, 32); + memset(pubkey, 0, 32); + memset(signature, 2, 64); + memset(msg, 0, MSG_LEN); + memset(random, 0, 64); + + /* Signature random test */ + INFO("Pseudorandom XEdDSA/Curvesigs...\n"); + for (count = 1; count <= iterations; count++) { + unsigned char b[64]; + crypto_hash_sha512(b, signature, 64); + memmove(privkey, b, 32); + crypto_hash_sha512(b, privkey, 32); + memmove(random, b, 64); + + sc_clamp(privkey); + curve25519_keygen(pubkey, privkey); + + xed25519_sign(signature, privkey, msg, MSG_LEN, random); + + if (curve25519_verify(signature, pubkey, msg, MSG_LEN) != 0) + ERROR("XEdDSA/Curvesigs verify failure #1 %d\n", count); + + if (b[63] & 1) + signature[count % 64] ^= 1; + else + msg[count % MSG_LEN] ^= 1; + if (curve25519_verify(signature, pubkey, msg, MSG_LEN) == 0) + ERROR("XEdDSA/Curvesigs verify failure #2 %d\n", count); + + if (count == 10000) { + if (memcmp(signature, signature_10k_correct, 64) != 0) + ERROR("XEdDSA/Curvesigs signature 10K doesn't match %d\n", count); + } + if (count == 100000) + print_bytes("100K XEdDSA/C", signature, 64); + if (count == 1000000) + print_bytes("1M XEdDSA/C", signature, 64); + if (count == 10000000) + print_bytes("10M XEdDSA/C", signature, 64); + } + INFO("good\n"); + return 0; +} + +int generalized_xveddsa_slow_test(int silent, int iterations) +{ + unsigned char signature_10k_correct[96] = { + 0x89, 0x21, 0xf5, 0x2f, 0x37, 0x72, 0x08, 0x55, + 0x18, 0x9d, 0x24, 0xed, 0x86, 0xb1, 0x7a, 0x02, + 0xbf, 0x29, 0x5e, 0xa7, 0x45, 0xdc, 0x80, 0x03, + 0x7f, 0x4f, 0xca, 0x79, 0xe0, 0x95, 0xd0, 0xa1, + 0xb5, 0x99, 0xbe, 0xbd, 0xef, 0xbe, 0xa4, 0xdc, + 0x0c, 0x07, 0x6a, 0xf7, 0x7f, 0xe1, 0x1c, 0xb8, + 0x18, 0x84, 0xb8, 0xb4, 0xcf, 0x38, 0x7d, 0x98, + 0x37, 0xd8, 0x40, 0x23, 0x42, 0x12, 0x70, 0x06, + 0xb0, 0xd1, 0x0c, 0xc0, 0x1c, 0xa6, 0x9a, 0x2f, + 0xb4, 0x02, 0xd6, 0x37, 0x22, 0xe9, 0xfb, 0x00, + 0x22, 0x02, 0x5a, 0xf4, 0x40, 0x43, 0xb8, 0xe9, + 0xf4, 0x13, 0x44, 0x16, 0x19, 0x8d, 0x7e, 0x02, + }; + unsigned char signature_100k_correct[96] = { + 0xc4, 0x99, 0x64, 0x1f, 0x94, 0x95, 0xf4, 0x57, + 0xa0, 0xb9, 0x3d, 0xc3, 0xb5, 0x2e, 0x1e, 0xdd, + 0x92, 0xf2, 0x4c, 0xb2, 0x01, 0x36, 0x3d, 0xf2, + 0xea, 0x2c, 0xdc, 0x32, 0x21, 0x5f, 0xc5, 0xd2, + 0xff, 0x16, 0x41, 0x71, 0x3a, 0x77, 0x79, 0xeb, + 0x67, 0x20, 0xc4, 0xec, 0x39, 0xe1, 0x54, 0x2d, + 0x40, 0x10, 0xf9, 0xca, 0xc5, 0x21, 0x0a, 0x47, + 0x63, 0x99, 0x23, 0x04, 0x9d, 0x03, 0x1a, 0x06, + 0x00, 0xb9, 0x56, 0x7e, 0xef, 0xee, 0x0b, 0x40, + 0x59, 0xc1, 0x86, 0xd9, 0xa7, 0x87, 0x70, 0xec, + 0x05, 0x89, 0xbe, 0x71, 0x43, 0xd1, 0xf5, 0x61, + 0x5e, 0x00, 0x41, 0xde, 0x1f, 0x41, 0x2d, 0x0e, + }; + + +/* + unsigned char signature_1m_correct[96] = { + 0xf8, 0xb1, 0x20, 0xf2, 0x1e, 0x5c, 0xbf, 0x5f, + 0xea, 0x07, 0xcb, 0xb5, 0x77, 0xb8, 0x03, 0xbc, + 0xcb, 0x6d, 0xf1, 0xc1, 0xa5, 0x03, 0x05, 0x7b, + 0x01, 0x63, 0x9b, 0xf9, 0xed, 0x3e, 0x57, 0x47, + 0xd2, 0x5b, 0xf4, 0x7e, 0x7c, 0x45, 0xce, 0xfc, + 0x06, 0xb3, 0xf4, 0x05, 0x81, 0x9f, 0x53, 0xb0, + 0x18, 0xe3, 0xfa, 0xcb, 0xb2, 0x52, 0x3e, 0x57, + 0xcb, 0x34, 0xcc, 0x81, 0x60, 0xb9, 0x0b, 0x04, + 0x07, 0x79, 0xc0, 0x53, 0xad, 0xc4, 0x4b, 0xd0, + 0xb5, 0x7d, 0x95, 0x4e, 0xbe, 0xa5, 0x75, 0x0c, + 0xd4, 0xbf, 0xa7, 0xc0, 0xcf, 0xba, 0xe7, 0x7c, + 0xe2, 0x90, 0xef, 0x61, 0xa9, 0x29, 0x66, 0x0d, + }; + + unsigned char signature_10m_correct[96] = { + 0xf5, 0xa4, 0xbc, 0xec, 0xc3, 0x3d, 0xd0, 0x43, + 0xd2, 0x81, 0x27, 0x9e, 0xf0, 0x4c, 0xbe, 0xf3, + 0x77, 0x01, 0x56, 0x41, 0x0e, 0xff, 0x0c, 0xb9, + 0x66, 0xec, 0x4d, 0xe0, 0xb7, 0x25, 0x63, 0x6b, + 0x5c, 0x08, 0x39, 0x80, 0x4e, 0x37, 0x1b, 0x2c, + 0x46, 0x6f, 0x86, 0x99, 0x1c, 0x4e, 0x31, 0x60, + 0xdb, 0x4c, 0xfe, 0xc5, 0xa2, 0x4d, 0x71, 0x2b, + 0xd6, 0xd0, 0xc3, 0x98, 0x88, 0xdb, 0x0e, 0x0c, + 0x68, 0x4a, 0xd3, 0xc7, 0x56, 0xac, 0x8d, 0x95, + 0x7b, 0xbd, 0x99, 0x50, 0xe8, 0xd3, 0xea, 0xf3, + 0x7b, 0x26, 0xf2, 0xa2, 0x2b, 0x02, 0x58, 0xca, + 0xbd, 0x2c, 0x2b, 0xf7, 0x77, 0x58, 0xfe, 0x09, + }; + */ + + int count; + const int MSG_LEN = 200; + unsigned char privkey[32]; + unsigned char pubkey[32]; + unsigned char signature[96]; + unsigned char msg[MSG_LEN]; + unsigned char random[64]; + unsigned char vrf_out[32]; + + memset(privkey, 0, 32); + memset(pubkey, 0, 32); + memset(signature, 3, 96); + memset(msg, 0, MSG_LEN); + memset(random, 0, 64); + + INFO("Pseudorandom XVEdDSA...\n"); + for (count = 1; count <= iterations; count++) { + unsigned char b[64]; + crypto_hash_sha512(b, signature, 96); + memmove(privkey, b, 32); + crypto_hash_sha512(b, privkey, 32); + memmove(random, b, 64); + + sc_clamp(privkey); + curve25519_keygen(pubkey, privkey); + + generalized_xveddsa_25519_sign(signature, privkey, msg, MSG_LEN, random, NULL, 0); + + if (generalized_xveddsa_25519_verify(vrf_out, signature, pubkey, msg, MSG_LEN, NULL, 0) != 0) + ERROR("XVEdDSA verify failure #1 %d\n", count); + + if (b[63] & 1) + signature[count % 96] ^= 1; + else + msg[count % MSG_LEN] ^= 1; + + if (generalized_xveddsa_25519_verify(vrf_out, signature, pubkey, msg, MSG_LEN, NULL, 0) == 0) + ERROR("XVEdDSA verify failure #2 %d\n", count); + + if (count == 10000) + print_bytes("10K XVEdDSA", signature, 96); + if (count == 100000) + print_bytes("100K XVEdDSA", signature, 96); + if (count == 1000000) + print_bytes("1M XVEdDSA", signature, 96); + if (count == 10000000) + print_bytes("10M XVEdDSA", signature, 96); + if (count == 100000000) + print_bytes("100M XVEdDSA", signature, 96); + + if (count == 10000) { + if (memcmp(signature, signature_10k_correct, 96) != 0) + ERROR("XVEDDSA 10K doesn't match %d\n", count); + } + if (count == 100000) { + if (memcmp(signature, signature_100k_correct, 96) != 0) + ERROR("XVEDDSA 100K doesn't match %d\n", count); + } + /* + if (count == 1000000) { + if (memcmp(signature, signature_1m_correct, 96) != 0) + ERROR("XVEDDSA 1m doesn't match %d\n", count); + } + if (count == 10000000) { + if (memcmp(signature, signature_10m_correct, 96) != 0) + ERROR("XVEDDSA 10m doesn't match %d\n", count); + } + if (count == 100000000) { + if (memcmp(signature, signature_100m_correct, 96) != 0) + ERROR("XVEDDSA 100m doesn't match %d\n", count); + } + */ + } + INFO("good\n"); + return 0; +} diff --git a/Sources/libsignal/curve25519/ed25519/tests/internal_slow_tests.h b/Sources/libsignal/curve25519/ed25519/tests/internal_slow_tests.h new file mode 100755 index 0000000..5a680c6 --- /dev/null +++ b/Sources/libsignal/curve25519/ed25519/tests/internal_slow_tests.h @@ -0,0 +1,15 @@ +#ifndef __INTERNAL_SLOW_TESTS_H__ +#define __INTERNAL_SLOW_TESTS_H__ + +/* silent = 0 : prints info+error messages to stdout, abort() on test failure + * silent = 1 : returns 0 for success, anything else for failure + * iterations : hardcoded known-good values are at 10000, so run at least this many + */ + +int curvesigs_slow_test(int silent, int iterations); +int xeddsa_slow_test(int silent, int iterations); +int xeddsa_to_curvesigs_slow_test(int silent, int iterations); +int generalized_xveddsa_slow_test(int silent, int iterations); + + +#endif diff --git a/Sources/libsignal/device_consistency.c b/Sources/libsignal/device_consistency.c new file mode 100755 index 0000000..a079d11 --- /dev/null +++ b/Sources/libsignal/device_consistency.c @@ -0,0 +1,681 @@ +#include "device_consistency.h" + +#include +#include + +#include "signal_protocol_internal.h" +#include "curve.h" +#include "WhisperTextProtocol.pb-c.h" +#include "signal_utarray.h" + +#define CODE_VERSION 0 + +struct device_consistency_signature +{ + signal_type_base base; + signal_buffer *signature; + signal_buffer *vrf_output; +}; + +struct device_consistency_commitment +{ + signal_type_base base; + uint32_t generation; + signal_buffer *serialized; +}; + +struct device_consistency_message +{ + signal_type_base base; + device_consistency_signature *signature; + uint32_t generation; + signal_buffer *serialized; +}; + +struct device_consistency_signature_list +{ + UT_array *values; +}; + +static int device_consistency_message_create(device_consistency_message **message); +static void device_consistency_signature_list_sort(device_consistency_signature_list *list); + +/*------------------------------------------------------------------------*/ + +int device_consistency_signature_create(device_consistency_signature **signature, + const uint8_t *signature_data, size_t signature_len, + const uint8_t *vrf_output_data, size_t vrf_output_len) +{ + int result = 0; + device_consistency_signature *result_signature = 0; + + result_signature = malloc(sizeof(device_consistency_signature)); + if(!result_signature) { + result = SG_ERR_NOMEM; + goto complete; + } + memset(result_signature, 0, sizeof(device_consistency_signature)); + SIGNAL_INIT(result_signature, device_consistency_signature_destroy); + + result_signature->signature = signal_buffer_create(signature_data, signature_len); + if(!result_signature->signature) { + result = SG_ERR_NOMEM; + goto complete; + } + + result_signature->vrf_output = signal_buffer_create(vrf_output_data, vrf_output_len); + if(!result_signature->vrf_output) { + result = SG_ERR_NOMEM; + goto complete; + } + +complete: + if(result >= 0) { + *signature = result_signature; + } + else { + SIGNAL_UNREF(result_signature); + } + return result; +} + +signal_buffer *device_consistency_signature_get_signature(const device_consistency_signature *signature) +{ + assert(signature); + return signature->signature; +} + +signal_buffer *device_consistency_signature_get_vrf_output(const device_consistency_signature *signature) +{ + assert(signature); + return signature->vrf_output; +} + +void device_consistency_signature_destroy(signal_type_base *type) +{ + device_consistency_signature *signature = (device_consistency_signature *)type; + signal_buffer_free(signature->signature); + signal_buffer_free(signature->vrf_output); + free(signature); +} + +/*------------------------------------------------------------------------*/ + +int device_consistency_commitment_create(device_consistency_commitment **commitment, + uint32_t generation, ec_public_key_list *identity_key_list, + signal_context *global_context) +{ + static const char version[] = "DeviceConsistencyCommitment_V0"; + int result = 0; + void *digest_context = 0; + device_consistency_commitment *result_commitment = 0; + ec_public_key_list *sorted_list = 0; + uint8_t gen_data[4]; + unsigned int list_size; + unsigned int i; + + result_commitment = malloc(sizeof(device_consistency_commitment)); + if(!result_commitment) { + result = SG_ERR_NOMEM; + goto complete; + } + memset(result_commitment, 0, sizeof(device_consistency_commitment)); + SIGNAL_INIT(result_commitment, device_consistency_commitment_destroy); + + sorted_list = ec_public_key_list_copy(identity_key_list); + if(!sorted_list) { + result = SG_ERR_NOMEM; + goto complete; + } + + ec_public_key_list_sort(sorted_list); + + result = signal_sha512_digest_init(global_context, &digest_context); + if(result < 0) { + goto complete; + } + + result = signal_sha512_digest_update(global_context, digest_context, + (uint8_t *)version, sizeof(version) - 1); + if(result < 0) { + goto complete; + } + + gen_data[3] = (uint8_t)(generation); + gen_data[2] = (uint8_t)(generation >> 8); + gen_data[1] = (uint8_t)(generation >> 16); + gen_data[0] = (uint8_t)(generation >> 24); + + result = signal_sha512_digest_update(global_context, digest_context, + gen_data, sizeof(gen_data)); + if(result < 0) { + goto complete; + } + + list_size = ec_public_key_list_size(sorted_list); + for(i = 0; i < list_size; i++) { + signal_buffer *key_buffer = 0; + ec_public_key *key = ec_public_key_list_at(sorted_list, i); + + result = ec_public_key_serialize(&key_buffer, key); + if(result < 0) { + goto complete; + } + + result = signal_sha512_digest_update(global_context, digest_context, + signal_buffer_data(key_buffer), signal_buffer_len(key_buffer)); + signal_buffer_free(key_buffer); + if(result < 0) { + goto complete; + } + } + + result_commitment->generation = generation; + result = signal_sha512_digest_final(global_context, digest_context, &result_commitment->serialized); + +complete: + if(sorted_list) { + ec_public_key_list_free(sorted_list); + } + if(digest_context) { + signal_sha512_digest_cleanup(global_context, digest_context); + } + if(result >= 0) { + *commitment = result_commitment; + } + else { + SIGNAL_UNREF(result_commitment); + } + return result; +} + +uint32_t device_consistency_commitment_get_generation(const device_consistency_commitment *commitment) +{ + assert(commitment); + return commitment->generation; +} + +signal_buffer *device_consistency_commitment_get_serialized(const device_consistency_commitment *commitment) +{ + assert(commitment); + return commitment->serialized; +} + +void device_consistency_commitment_destroy(signal_type_base *type) +{ + device_consistency_commitment *commitment = (device_consistency_commitment *)type; + signal_buffer_free(commitment->serialized); + free(commitment); +} + +/*------------------------------------------------------------------------*/ + +int device_consistency_message_create(device_consistency_message **message) +{ + int result = 0; + device_consistency_message *result_message = 0; + + result_message = malloc(sizeof(device_consistency_message)); + if(!result_message) { + result = SG_ERR_NOMEM; + goto complete; + } + memset(result_message, 0, sizeof(device_consistency_message)); + SIGNAL_INIT(result_message, device_consistency_message_destroy); + +complete: + if(result >= 0) { + *message = result_message; + } + return result; +} + +int device_consistency_message_create_from_pair(device_consistency_message **message, + device_consistency_commitment *commitment, + ec_key_pair *identity_key_pair, + signal_context *global_context) +{ + int result = 0; + device_consistency_message *result_message = 0; + signal_buffer *commitment_buffer = 0; + signal_buffer *signature_buffer = 0; + signal_buffer *vrf_output_buffer = 0; + signal_buffer *serialized_signature_buffer = 0; + Textsecure__DeviceConsistencyCodeMessage message_structure = TEXTSECURE__DEVICE_CONSISTENCY_CODE_MESSAGE__INIT; + size_t len = 0; + uint8_t *data = 0; + size_t result_size = 0; + + /* Create message instance */ + result = device_consistency_message_create(&result_message); + if(result < 0) { + goto complete; + } + + /* Calculate VRF signature */ + commitment_buffer = device_consistency_commitment_get_serialized(commitment); + result = curve_calculate_vrf_signature(global_context, &signature_buffer, + ec_key_pair_get_private(identity_key_pair), + signal_buffer_data(commitment_buffer), signal_buffer_len(commitment_buffer)); + if(result < 0) { + goto complete; + } + + /* Verify VRF signature */ + result = curve_verify_vrf_signature(global_context, &vrf_output_buffer, + ec_key_pair_get_public(identity_key_pair), + signal_buffer_data(commitment_buffer), signal_buffer_len(commitment_buffer), + signal_buffer_data(signature_buffer), signal_buffer_len(signature_buffer)); + if(result < 0) { + goto complete; + } + + result_message->generation = device_consistency_commitment_get_generation(commitment); + + /* Create and assign the signature */ + result = device_consistency_signature_create(&result_message->signature, + signal_buffer_data(signature_buffer), signal_buffer_len(signature_buffer), + signal_buffer_data(vrf_output_buffer), signal_buffer_len(vrf_output_buffer)); + if(result < 0) { + goto complete; + } + + serialized_signature_buffer = device_consistency_signature_get_signature(result_message->signature); + + /* Serialize the message */ + message_structure.generation = device_consistency_commitment_get_generation(commitment); + message_structure.has_generation = 1; + message_structure.signature.data = signal_buffer_data(serialized_signature_buffer); + message_structure.signature.len = signal_buffer_len(serialized_signature_buffer); + message_structure.has_signature = 1; + + len = textsecure__device_consistency_code_message__get_packed_size(&message_structure); + result_message->serialized = signal_buffer_alloc(len); + if(!result_message->serialized) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_message->serialized); + + result_size = textsecure__device_consistency_code_message__pack(&message_structure, data); + if(result_size != len) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + +complete: + signal_buffer_free(signature_buffer); + signal_buffer_free(vrf_output_buffer); + if(result >= 0) { + *message = result_message; + } + else { + SIGNAL_UNREF(result_message); + } + if(result == SG_ERR_INVALID_KEY || result == SG_ERR_VRF_SIG_VERIF_FAILED) { + result = SG_ERR_UNKNOWN; + } + return result; +} + +int device_consistency_message_create_from_serialized(device_consistency_message **message, + device_consistency_commitment *commitment, + const uint8_t *serialized_data, size_t serialized_len, + ec_public_key *identity_key, + signal_context *global_context) +{ + int result = 0; + device_consistency_message *result_message = 0; + Textsecure__DeviceConsistencyCodeMessage *message_structure = 0; + signal_buffer *commitment_buffer = 0; + signal_buffer *vrf_output_buffer = 0; + + /* Create message instance */ + result = device_consistency_message_create(&result_message); + if(result < 0) { + goto complete; + } + + /* Deserialize the message */ + message_structure = textsecure__device_consistency_code_message__unpack(0, serialized_len, serialized_data); + if(!message_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(!message_structure->has_generation || !message_structure->has_signature) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + /* Verify VRF signature */ + commitment_buffer = device_consistency_commitment_get_serialized(commitment); + result = curve_verify_vrf_signature(global_context, &vrf_output_buffer, + identity_key, + signal_buffer_data(commitment_buffer), signal_buffer_len(commitment_buffer), + message_structure->signature.data, message_structure->signature.len); + if(result < 0) { + goto complete; + } + + /* Assign the message fields */ + result_message->generation = message_structure->generation; + + result = device_consistency_signature_create(&result_message->signature, + message_structure->signature.data, message_structure->signature.len, + signal_buffer_data(vrf_output_buffer), signal_buffer_len(vrf_output_buffer)); + if(result < 0) { + goto complete; + } + + result_message->serialized = signal_buffer_create(serialized_data, serialized_len); + if(!result_message->serialized) { + result = SG_ERR_NOMEM; + } + +complete: + if(message_structure) { + textsecure__device_consistency_code_message__free_unpacked(message_structure, 0); + } + signal_buffer_free(vrf_output_buffer); + if(result >= 0) { + *message = result_message; + } + else { + SIGNAL_UNREF(result_message); + } + if(result == SG_ERR_INVALID_PROTO_BUF + || result == SG_ERR_INVALID_KEY + || result == SG_ERR_VRF_SIG_VERIF_FAILED) { + result = SG_ERR_INVALID_MESSAGE; + } + return result; +} + +signal_buffer *device_consistency_message_get_serialized(const device_consistency_message *message) +{ + assert(message); + return message->serialized; +} + +device_consistency_signature *device_consistency_message_get_signature(const device_consistency_message *message) +{ + assert(message); + return message->signature; +} + +uint32_t device_consistency_signature_get_generation(const device_consistency_message *message) +{ + assert(message); + return message->generation; +} + +void device_consistency_message_destroy(signal_type_base *type) +{ + device_consistency_message *message = (device_consistency_message *)type; + SIGNAL_UNREF(message->signature); + signal_buffer_free(message->serialized); + free(message); +} + +/*------------------------------------------------------------------------*/ + +int device_consistency_code_generate_for(device_consistency_commitment *commitment, + device_consistency_signature_list *signatures, + char **code_string, + signal_context *global_context) +{ + int result = 0; + char *result_string = 0; + void *digest_context = 0; + device_consistency_signature_list *sorted_list = 0; + uint8_t version_data[2]; + signal_buffer *commitment_buffer; + unsigned int list_size; + unsigned int i; + signal_buffer *hash_buffer = 0; + uint8_t *data = 0; + size_t len = 0; + char *encoded_string = 0; + + sorted_list = device_consistency_signature_list_copy(signatures); + if(!sorted_list) { + result = SG_ERR_NOMEM; + goto complete; + } + + device_consistency_signature_list_sort(sorted_list); + + result = signal_sha512_digest_init(global_context, &digest_context); + if(result < 0) { + goto complete; + } + + version_data[1] = (uint8_t)(CODE_VERSION); + version_data[0] = (uint8_t)(CODE_VERSION >> 8); + + result = signal_sha512_digest_update(global_context, digest_context, + version_data, sizeof(version_data)); + if(result < 0) { + goto complete; + } + + commitment_buffer = device_consistency_commitment_get_serialized(commitment); + result = signal_sha512_digest_update(global_context, digest_context, + signal_buffer_data(commitment_buffer), + signal_buffer_len(commitment_buffer)); + if(result < 0) { + goto complete; + } + + list_size = device_consistency_signature_list_size(sorted_list); + for(i = 0; i < list_size; i++) { + device_consistency_signature *signature = device_consistency_signature_list_at(sorted_list, i); + signal_buffer *vrf_output = device_consistency_signature_get_vrf_output(signature); + + result = signal_sha512_digest_update(global_context, digest_context, + signal_buffer_data(vrf_output), + signal_buffer_len(vrf_output)); + if(result < 0) { + goto complete; + } + } + + result = signal_sha512_digest_final(global_context, digest_context, &hash_buffer); + if(result < 0) { + goto complete; + } + + data = signal_buffer_data(hash_buffer); + len = signal_buffer_len(hash_buffer); + + if(len < 10) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + encoded_string = malloc(11); + if(!encoded_string) { + result = SG_ERR_NOMEM; + goto complete; + } + + for(i = 0; i < 10; i += 5) { + uint64_t chunk = ((uint64_t)data[i] & 0xFFL) << 32 | + ((uint64_t)data[i + 1] & 0xFFL) << 24 | + ((uint64_t)data[i + 2] & 0xFFL) << 16 | + ((uint64_t)data[i + 3] & 0xFFL) << 8 | + ((uint64_t)data[i + 4] & 0xFFL); +#if _WINDOWS + sprintf_s(encoded_string + i, 6, "%05d", (int)(chunk % 100000)); +#else + snprintf(encoded_string + i, 6, "%05d", (int)(chunk % 100000)); +#endif + } + + result_string = malloc(7); + if(!result_string) { + result = SG_ERR_NOMEM; + goto complete; + } + + memcpy(result_string, encoded_string, 6); + result_string[6] = '\0'; + +complete: + if(sorted_list) { + device_consistency_signature_list_free(sorted_list); + } + if(digest_context) { + signal_sha512_digest_cleanup(global_context, digest_context); + } + signal_buffer_free(hash_buffer); + free(encoded_string); + if(result >= 0) { + *code_string = result_string; + } + return result; +} + +/*------------------------------------------------------------------------*/ + +device_consistency_signature_list *device_consistency_signature_list_alloc() +{ + int result = 0; + device_consistency_signature_list *list = malloc(sizeof(device_consistency_signature_list)); + if(!list) { + result = SG_ERR_NOMEM; + goto complete; + } + + memset(list, 0, sizeof(device_consistency_signature_list)); + + utarray_new(list->values, &ut_ptr_icd); + +complete: + if(result < 0) { + if(list) { + free(list); + } + return 0; + } + else { + return list; + } +} + +device_consistency_signature_list *device_consistency_signature_list_copy(const device_consistency_signature_list *list) +{ + int result = 0; + device_consistency_signature_list *result_list = 0; + unsigned int size; + unsigned int i; + device_consistency_signature **p; + + result_list = device_consistency_signature_list_alloc(); + if(!result_list) { + result = SG_ERR_NOMEM; + goto complete; + } + + size = utarray_len(list->values); + + utarray_reserve(result_list->values, size); + + for (i = 0; i < size; i++) { + p = (device_consistency_signature **)utarray_eltptr(list->values, i); + result = device_consistency_signature_list_push_back(result_list, *p); + if(result < 0) { + goto complete; + } + } + +complete: + if(result < 0) { + if(result_list) { + device_consistency_signature_list_free(result_list); + } + return 0; + } + else { + return result_list; + } +} + +int device_consistency_signature_list_push_back(device_consistency_signature_list *list, device_consistency_signature *value) +{ + int result = 0; + assert(list); + assert(value); + + utarray_push_back(list->values, &value); + SIGNAL_REF(value); + +complete: + return result; +} + +unsigned int device_consistency_signature_list_size(const device_consistency_signature_list *list) +{ + assert(list); + return utarray_len(list->values); +} + +device_consistency_signature *device_consistency_signature_list_at(const device_consistency_signature_list *list, unsigned int index) +{ + device_consistency_signature **value = 0; + + assert(list); + assert(index < utarray_len(list->values)); + + value = (device_consistency_signature **)utarray_eltptr(list->values, index); + + assert(*value); + + return *value; +} + +int device_consistency_signature_list_sort_comparator(const void *a, const void *b) +{ + int result; + const device_consistency_signature *sig1 = *((const device_consistency_signature **)a); + const device_consistency_signature *sig2 = *((const device_consistency_signature **)b); + signal_buffer *buf1 = device_consistency_signature_get_vrf_output(sig1); + signal_buffer *buf2 = device_consistency_signature_get_vrf_output(sig2); + size_t len1 = signal_buffer_len(buf1); + size_t len2 = signal_buffer_len(buf2); + + if(len1 == len2) { + result = memcmp(signal_buffer_data(buf1), signal_buffer_data(buf2), len1); + } + else if (len1 < len2) { + result = -1; + } else { + result = 1; + } + + return result; +} + +void device_consistency_signature_list_sort(device_consistency_signature_list *list) +{ + assert(list); + utarray_sort(list->values, device_consistency_signature_list_sort_comparator); +} + +void device_consistency_signature_list_free(device_consistency_signature_list *list) +{ + unsigned int size; + unsigned int i; + device_consistency_signature **p; + if(list) { + size = utarray_len(list->values); + for (i = 0; i < size; i++) { + p = (device_consistency_signature **)utarray_eltptr(list->values, i); + SIGNAL_UNREF(*p); + } + utarray_free(list->values); + free(list); + } +} diff --git a/Sources/libsignal/device_consistency.h b/Sources/libsignal/device_consistency.h new file mode 100755 index 0000000..379d044 --- /dev/null +++ b/Sources/libsignal/device_consistency.h @@ -0,0 +1,60 @@ +#ifndef DEVICE_CONSISTENCY_H +#define DEVICE_CONSISTENCY_H + +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +int device_consistency_signature_create(device_consistency_signature **signature, + const uint8_t *signature_data, size_t signature_len, + const uint8_t *vrf_output_data, size_t vrf_output_len); + +signal_buffer *device_consistency_signature_get_signature(const device_consistency_signature *signature); +signal_buffer *device_consistency_signature_get_vrf_output(const device_consistency_signature *signature); + +void device_consistency_signature_destroy(signal_type_base *type); + +int device_consistency_commitment_create(device_consistency_commitment **commitment, + uint32_t generation, ec_public_key_list *identity_key_list, + signal_context *global_context); + +uint32_t device_consistency_commitment_get_generation(const device_consistency_commitment *commitment); +signal_buffer *device_consistency_commitment_get_serialized(const device_consistency_commitment *commitment); + +void device_consistency_commitment_destroy(signal_type_base *type); + +int device_consistency_message_create_from_pair(device_consistency_message **message, + device_consistency_commitment *commitment, + ec_key_pair *identity_key_pair, + signal_context *global_context); +int device_consistency_message_create_from_serialized(device_consistency_message **message, + device_consistency_commitment *commitment, + const uint8_t *serialized_data, size_t serialized_len, + ec_public_key *identity_key, + signal_context *global_context); + +signal_buffer *device_consistency_message_get_serialized(const device_consistency_message *message); +device_consistency_signature *device_consistency_message_get_signature(const device_consistency_message *message); +uint32_t device_consistency_signature_get_generation(const device_consistency_message *message); + +void device_consistency_message_destroy(signal_type_base *type); + +int device_consistency_code_generate_for(device_consistency_commitment *commitment, + device_consistency_signature_list *signatures, + char **code_string, + signal_context *global_context); + +device_consistency_signature_list *device_consistency_signature_list_alloc(void); +device_consistency_signature_list *device_consistency_signature_list_copy(const device_consistency_signature_list *list); +int device_consistency_signature_list_push_back(device_consistency_signature_list *list, device_consistency_signature *value); +unsigned int device_consistency_signature_list_size(const device_consistency_signature_list *list); +device_consistency_signature *device_consistency_signature_list_at(const device_consistency_signature_list *list, unsigned int index); +void device_consistency_signature_list_free(device_consistency_signature_list *list); + +#ifdef __cplusplus +} +#endif + +#endif /* DEVICE_CONSISTENCY_H */ diff --git a/Sources/libsignal/fingerprint.c b/Sources/libsignal/fingerprint.c new file mode 100755 index 0000000..1058e90 --- /dev/null +++ b/Sources/libsignal/fingerprint.c @@ -0,0 +1,851 @@ +#include "fingerprint.h" + +#include +#include + +#include "FingerprintProtocol.pb-c.h" +#include "signal_protocol_internal.h" +#include "vpool.h" + +#define FINGERPRINT_VERSION 0 +#define FINGERPRINT_LENGTH 30 + +#define MAX(a,b) (((a)>(b))?(a):(b)) + +struct fingerprint +{ + signal_type_base base; + displayable_fingerprint *displayable; + scannable_fingerprint *scannable; +}; + +struct displayable_fingerprint +{ + signal_type_base base; + char *local_fingerprint; + char *remote_fingerprint; + char *display_text; +}; + +struct scannable_fingerprint +{ + signal_type_base base; + uint32_t version; + char *local_stable_identifier; + signal_buffer *local_fingerprint; + char *remote_stable_identifier; + signal_buffer *remote_fingerprint; +}; + +struct fingerprint_generator +{ + int iterations; + int scannable_version; + signal_context *global_context; +}; + +static int fingerprint_generator_get_logical_key_bytes(signal_buffer **key_bytes, + const ec_public_key_list *unsorted_key_list); + +static int fingerprint_generator_create_for_impl(fingerprint_generator *generator, + const char *local_stable_identifier, const signal_buffer *local_identity_buffer, + const char *remote_stable_identifier, const signal_buffer *remote_identity_buffer, + fingerprint **fingerprint_val); + +static int fingerprint_generator_get_fingerprint(fingerprint_generator *generator, signal_buffer **fingerprint_buffer, + const char *stable_identifier, const signal_buffer *identity_buffer); + +static int fingerprint_generator_create_display_string(fingerprint_generator *generator, + char **display_string, signal_buffer *fingerprint_buffer); + +int fingerprint_generator_create(fingerprint_generator **generator, + int iterations, int scannable_version, + signal_context *global_context) +{ + fingerprint_generator *result_generator; + + assert(global_context); + + if(scannable_version < 0 || scannable_version > 1) { + return SG_ERR_INVAL; + } + + result_generator = malloc(sizeof(fingerprint_generator)); + if(!result_generator) { + return SG_ERR_NOMEM; + } + memset(result_generator, 0, sizeof(fingerprint_generator)); + + result_generator->iterations = iterations; + result_generator->scannable_version = scannable_version; + result_generator->global_context = global_context; + + *generator = result_generator; + return 0; +} + +int fingerprint_generator_create_for(fingerprint_generator *generator, + const char *local_stable_identifier, const ec_public_key *local_identity_key, + const char *remote_stable_identifier, const ec_public_key *remote_identity_key, + fingerprint **fingerprint_val) +{ + int result = 0; + signal_buffer *local_key_buffer = 0; + signal_buffer *remote_key_buffer = 0; + + result = ec_public_key_serialize(&local_key_buffer, local_identity_key); + if(result < 0) { + goto complete; + } + + result = ec_public_key_serialize(&remote_key_buffer, remote_identity_key); + if(result < 0) { + goto complete; + } + + result = fingerprint_generator_create_for_impl(generator, + local_stable_identifier, local_key_buffer, + remote_stable_identifier, remote_key_buffer, + fingerprint_val); + +complete: + signal_buffer_free(local_key_buffer); + signal_buffer_free(remote_key_buffer); + return result; +} + +int fingerprint_generator_create_for_list(fingerprint_generator *generator, + const char *local_stable_identifier, const ec_public_key_list *local_identity_key_list, + const char *remote_stable_identifier, const ec_public_key_list *remote_identity_key_list, + fingerprint **fingerprint_val) +{ + int result = 0; + signal_buffer *local_key_buffer = 0; + signal_buffer *remote_key_buffer = 0; + + result = fingerprint_generator_get_logical_key_bytes(&local_key_buffer, local_identity_key_list); + if(result < 0) { + goto complete; + } + + result = fingerprint_generator_get_logical_key_bytes(&remote_key_buffer, remote_identity_key_list); + if(result < 0) { + goto complete; + } + + result = fingerprint_generator_create_for_impl(generator, + local_stable_identifier, local_key_buffer, + remote_stable_identifier, remote_key_buffer, + fingerprint_val); + +complete: + signal_buffer_free(local_key_buffer); + signal_buffer_free(remote_key_buffer); + return result; +} + +int fingerprint_generator_create_for_impl(fingerprint_generator *generator, + const char *local_stable_identifier, const signal_buffer *local_identity_buffer, + const char *remote_stable_identifier, const signal_buffer *remote_identity_buffer, + fingerprint **fingerprint_val) +{ + int result = 0; + fingerprint *result_fingerprint = 0; + signal_buffer *local_fingerprint_buffer = 0; + signal_buffer *remote_fingerprint_buffer = 0; + displayable_fingerprint *displayable = 0; + char *displayable_local = 0; + char *displayable_remote = 0; + scannable_fingerprint *scannable = 0; + + result = fingerprint_generator_get_fingerprint(generator, + &local_fingerprint_buffer, local_stable_identifier, local_identity_buffer); + if(result < 0) { + goto complete; + } + + result = fingerprint_generator_get_fingerprint(generator, + &remote_fingerprint_buffer, remote_stable_identifier, remote_identity_buffer); + if(result < 0) { + goto complete; + } + + result = fingerprint_generator_create_display_string(generator, &displayable_local, + local_fingerprint_buffer); + if(result < 0) { + goto complete; + } + + result = fingerprint_generator_create_display_string(generator, &displayable_remote, + remote_fingerprint_buffer); + if(result < 0) { + goto complete; + } + + result = displayable_fingerprint_create(&displayable, displayable_local, displayable_remote); + if(result < 0) { + goto complete; + } + + if(generator->scannable_version == 0) { + result = scannable_fingerprint_create(&scannable, 0, + local_stable_identifier, local_identity_buffer, + remote_stable_identifier, remote_identity_buffer); + } + else if(generator->scannable_version == 1) { + result = scannable_fingerprint_create(&scannable, 1, + 0, local_fingerprint_buffer, + 0, remote_fingerprint_buffer); + } + else { + result = SG_ERR_INVAL; + } + if(result < 0) { + goto complete; + } + + result = fingerprint_create(&result_fingerprint, displayable, scannable); + +complete: + signal_buffer_free(local_fingerprint_buffer); + signal_buffer_free(remote_fingerprint_buffer); + if(displayable_local) { + free(displayable_local); + } + if(displayable_remote) { + free(displayable_remote); + } + SIGNAL_UNREF(displayable); + SIGNAL_UNREF(scannable); + if(result >= 0) { + *fingerprint_val = result_fingerprint; + } + return result; +} + +int fingerprint_generator_get_logical_key_bytes(signal_buffer **key_bytes, + const ec_public_key_list *unsorted_key_list) +{ + int result = 0; + ec_public_key_list *sorted_key_list = 0; + ec_public_key *key_element = 0; + unsigned int list_size = 0; + unsigned int i = 0; + struct vpool vp; + signal_buffer *buffer = 0; + + vpool_init(&vp, 1024, 0); + + sorted_key_list = ec_public_key_list_copy(unsorted_key_list); + if(!sorted_key_list) { + result = SG_ERR_NOMEM; + goto complete; + } + + ec_public_key_list_sort(sorted_key_list); + list_size = ec_public_key_list_size(sorted_key_list); + + for(i = 0; i < list_size; i++) { + key_element = ec_public_key_list_at(sorted_key_list, i); + + result = ec_public_key_serialize(&buffer, key_element); + if (result < 0) { + goto complete; + } + + if(!vpool_insert(&vp, vpool_get_length(&vp), + signal_buffer_data(buffer), signal_buffer_len(buffer))) { + result = SG_ERR_NOMEM; + goto complete; + } + + signal_buffer_free(buffer); + buffer = 0; + } + + buffer = signal_buffer_create(vpool_get_buf(&vp), vpool_get_length(&vp)); + if(!buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + +complete: + ec_public_key_list_free(sorted_key_list); + vpool_final(&vp); + if(result >= 0) { + *key_bytes = buffer; + } + else { + signal_buffer_free(buffer); + } + return result; +} + +int fingerprint_generator_get_fingerprint(fingerprint_generator *generator, signal_buffer **fingerprint_buffer, + const char *stable_identifier, const signal_buffer *identity_buffer) +{ + int result = 0; + void *digest_context = 0; + signal_buffer *hash_buffer = 0; + signal_buffer *hash_out_buffer = 0; + uint8_t *data = 0; + size_t len = 0; + int i = 0; + + assert(generator); + assert(stable_identifier); + assert(identity_buffer); + + result = signal_sha512_digest_init(generator->global_context, &digest_context); + if(result < 0) { + goto complete; + } + + len = 2 + signal_buffer_len(identity_buffer) + strlen(stable_identifier); + + hash_buffer = signal_buffer_alloc(len); + if(!hash_buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(hash_buffer); + + memset(data, 0, len); + + data[0] = 0; + data[1] = (uint8_t)FINGERPRINT_VERSION; + memcpy(data + 2, signal_buffer_const_data(identity_buffer), signal_buffer_len(identity_buffer)); + memcpy(data + 2 + signal_buffer_len(identity_buffer), stable_identifier, strlen(stable_identifier)); + + for(i = 0; i < generator->iterations; i++) { + data = signal_buffer_data(hash_buffer); + len = signal_buffer_len(hash_buffer); + + result = signal_sha512_digest_update(generator->global_context, + digest_context, data, len); + if(result < 0) { + goto complete; + } + + result = signal_sha512_digest_update(generator->global_context, + digest_context, + signal_buffer_const_data(identity_buffer), + signal_buffer_len(identity_buffer)); + if(result < 0) { + goto complete; + } + + result = signal_sha512_digest_final(generator->global_context, + digest_context, &hash_out_buffer); + if(result < 0) { + goto complete; + } + + signal_buffer_free(hash_buffer); + hash_buffer = hash_out_buffer; + hash_out_buffer = 0; + } + + len = signal_buffer_len(hash_buffer); + + if(len < FINGERPRINT_LENGTH) { + result = SG_ERR_UNKNOWN; + goto complete; + } + +complete: + if(digest_context) { + signal_sha512_digest_cleanup(generator->global_context, digest_context); + } + if(result >= 0) { + *fingerprint_buffer = hash_buffer; + } + else { + signal_buffer_free(hash_buffer); + } + return result; +} + +int fingerprint_generator_create_display_string(fingerprint_generator *generator, + char **display_string, signal_buffer *fingerprint_buffer) +{ + int result = 0; + char *result_string = 0; + uint8_t *data = 0; + size_t len = 0; + int i = 0; + + assert(generator); + assert(fingerprint_buffer); + + data = signal_buffer_data(fingerprint_buffer); + len = signal_buffer_len(fingerprint_buffer); + + if(len < FINGERPRINT_LENGTH) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + result_string = malloc(FINGERPRINT_LENGTH+1); + if(!result_string) { + result = SG_ERR_NOMEM; + goto complete; + } + + for(i = 0; i < FINGERPRINT_LENGTH; i += 5) { + uint64_t chunk = ((uint64_t)data[i] & 0xFFL) << 32 | + ((uint64_t)data[i + 1] & 0xFFL) << 24 | + ((uint64_t)data[i + 2] & 0xFFL) << 16 | + ((uint64_t)data[i + 3] & 0xFFL) << 8 | + ((uint64_t)data[i + 4] & 0xFFL); +#if _WINDOWS + sprintf_s(result_string + i, 6, "%05d", (int)(chunk % 100000)); +#else + snprintf(result_string + i, 6, "%05d", (int)(chunk % 100000)); +#endif + } + +complete: + if(result >= 0) { + *display_string = result_string; + } + return result; +} + +void fingerprint_generator_free(fingerprint_generator *generator) +{ + if(generator) { + free(generator); + } +} + +int fingerprint_create(fingerprint **fingerprint_val, displayable_fingerprint *displayable, scannable_fingerprint *scannable) +{ + fingerprint *result = malloc(sizeof(fingerprint)); + if(!result) { + return SG_ERR_NOMEM; + } + + memset(result, 0, sizeof(fingerprint)); + SIGNAL_INIT(result, fingerprint_destroy); + if(displayable) { + result->displayable = displayable; + SIGNAL_REF(displayable); + } + if(scannable) { + result->scannable = scannable; + SIGNAL_REF(scannable); + } + + *fingerprint_val = result; + + return 0; +} + +displayable_fingerprint *fingerprint_get_displayable(const fingerprint *fingerprint_val) +{ + assert(fingerprint_val); + return fingerprint_val->displayable; +} + +scannable_fingerprint *fingerprint_get_scannable(const fingerprint *fingerprint_val) +{ + assert(fingerprint_val); + return fingerprint_val->scannable; +} + +void fingerprint_destroy(signal_type_base *type) +{ + fingerprint *fingerprint_val = (fingerprint *)type; + SIGNAL_UNREF(fingerprint_val->displayable); + SIGNAL_UNREF(fingerprint_val->scannable); + free(fingerprint_val); +} + +int displayable_fingerprint_create(displayable_fingerprint **displayable, const char *local_fingerprint, const char *remote_fingerprint) +{ + int result = 0; + size_t local_len = 0; + size_t remote_len = 0; + displayable_fingerprint *result_displayable = 0; + char *display_text = 0; + + if(!local_fingerprint || !remote_fingerprint) { + return SG_ERR_INVAL; + } + + result_displayable = malloc(sizeof(displayable_fingerprint)); + if(!result_displayable) { + return SG_ERR_NOMEM; + } + + memset(result_displayable, 0, sizeof(displayable_fingerprint)); + SIGNAL_INIT(result_displayable, displayable_fingerprint_destroy); + + result_displayable->local_fingerprint = strdup(local_fingerprint); + if(!result_displayable->local_fingerprint) { + result = SG_ERR_NOMEM; + goto complete; + } + + result_displayable->remote_fingerprint = strdup(remote_fingerprint); + if(!result_displayable->remote_fingerprint) { + result = SG_ERR_NOMEM; + goto complete; + } + + local_len = strlen(local_fingerprint); + remote_len = strlen(remote_fingerprint); + + display_text = malloc(local_len + remote_len + 1); + if(!display_text) { + result = SG_ERR_NOMEM; + goto complete; + } + + if(strcmp(local_fingerprint, remote_fingerprint) <= 0) { + memcpy(display_text, local_fingerprint, local_len); + memcpy(display_text + local_len, remote_fingerprint, remote_len + 1); + } + else { + memcpy(display_text, remote_fingerprint, remote_len); + memcpy(display_text + remote_len, local_fingerprint, local_len + 1); + } + + result_displayable->display_text = display_text; + +complete: + if(result < 0) { + SIGNAL_UNREF(result_displayable); + } + else { + *displayable = result_displayable; + } + + return result; +} + +const char *displayable_fingerprint_local(const displayable_fingerprint *displayable) +{ + assert(displayable); + return displayable->local_fingerprint; +} + +const char *displayable_fingerprint_remote(const displayable_fingerprint *displayable) +{ + assert(displayable); + return displayable->remote_fingerprint; +} + +const char *displayable_fingerprint_text(const displayable_fingerprint *displayable) +{ + assert(displayable); + return displayable->display_text; +} + +void displayable_fingerprint_destroy(signal_type_base *type) +{ + displayable_fingerprint *displayable = (displayable_fingerprint *)type; + if(displayable->local_fingerprint) { + free(displayable->local_fingerprint); + } + if(displayable->remote_fingerprint) { + free(displayable->remote_fingerprint); + } + if(displayable->display_text) { + free(displayable->display_text); + } + free(displayable); +} + +int scannable_fingerprint_create(scannable_fingerprint **scannable, + uint32_t version, + const char *local_stable_identifier, const signal_buffer *local_fingerprint, + const char *remote_stable_identifier, const signal_buffer *remote_fingerprint) +{ + int result = 0; + scannable_fingerprint *result_scannable = 0; + + if(version == 0 && (!local_stable_identifier || !remote_stable_identifier)) { + return SG_ERR_INVAL; + } + + if(!local_fingerprint || !remote_fingerprint) { + return SG_ERR_INVAL; + } + + result_scannable = malloc(sizeof(scannable_fingerprint)); + if(!result_scannable) { + return SG_ERR_NOMEM; + } + + memset(result_scannable, 0, sizeof(scannable_fingerprint)); + SIGNAL_INIT(result_scannable, scannable_fingerprint_destroy); + + result_scannable->version = version; + + if(version == 0 && local_stable_identifier) { + result_scannable->local_stable_identifier = strdup(local_stable_identifier); + if(!result_scannable->local_stable_identifier) { + result = SG_ERR_NOMEM; + goto complete; + } + } + + if(version == 0) { + result_scannable->local_fingerprint = signal_buffer_copy(local_fingerprint); + } + else { + result_scannable->local_fingerprint = signal_buffer_n_copy(local_fingerprint, 32); + } + if(!result_scannable->local_fingerprint) { + result = SG_ERR_NOMEM; + goto complete; + } + + if(version == 0 && remote_stable_identifier) { + result_scannable->remote_stable_identifier = strdup(remote_stable_identifier); + if(!result_scannable->remote_stable_identifier) { + result = SG_ERR_NOMEM; + goto complete; + } + } + + if(version == 0) { + result_scannable->remote_fingerprint = signal_buffer_copy(remote_fingerprint); + } + else { + result_scannable->remote_fingerprint = signal_buffer_n_copy(remote_fingerprint, 32); + } + if(!result_scannable->remote_fingerprint) { + result = SG_ERR_NOMEM; + goto complete; + } + +complete: + if(result < 0) { + SIGNAL_UNREF(result_scannable); + } + else { + *scannable = result_scannable; + } + + return result; +} + +int scannable_fingerprint_serialize(signal_buffer **buffer, const scannable_fingerprint *scannable) +{ + int result = 0; + size_t result_size = 0; + signal_buffer *result_buf = 0; + Textsecure__CombinedFingerprints combined_fingerprint = TEXTSECURE__COMBINED_FINGERPRINTS__INIT; + Textsecure__LogicalFingerprint local_fingerprint = TEXTSECURE__LOGICAL_FINGERPRINT__INIT; + Textsecure__LogicalFingerprint remote_fingerprint = TEXTSECURE__LOGICAL_FINGERPRINT__INIT; + size_t len = 0; + uint8_t *data = 0; + + combined_fingerprint.version = scannable->version; + combined_fingerprint.has_version = 1; + + if(scannable->local_fingerprint) { + if(scannable->version == 0 && scannable->local_stable_identifier) { + signal_protocol_str_serialize_protobuf(&local_fingerprint.identifier, scannable->local_stable_identifier); + local_fingerprint.has_identifier = 1; + } + + local_fingerprint.content.data = signal_buffer_data(scannable->local_fingerprint); + local_fingerprint.content.len = signal_buffer_len(scannable->local_fingerprint); + local_fingerprint.has_content = 1; + + combined_fingerprint.localfingerprint = &local_fingerprint; + } + + if(scannable->remote_fingerprint) { + if(scannable->version == 0 && scannable->remote_stable_identifier) { + signal_protocol_str_serialize_protobuf(&remote_fingerprint.identifier, scannable->remote_stable_identifier); + remote_fingerprint.has_identifier = 1; + } + + remote_fingerprint.content.data = signal_buffer_data(scannable->remote_fingerprint); + remote_fingerprint.content.len = signal_buffer_len(scannable->remote_fingerprint); + remote_fingerprint.has_content = 1; + + combined_fingerprint.remotefingerprint = &remote_fingerprint; + } + + len = textsecure__combined_fingerprints__get_packed_size(&combined_fingerprint); + + result_buf = signal_buffer_alloc(len); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + result_size = textsecure__combined_fingerprints__pack(&combined_fingerprint, data); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int scannable_fingerprint_deserialize(scannable_fingerprint **scannable, const uint8_t *data, size_t len, signal_context *global_context) +{ + int result = 0; + Textsecure__CombinedFingerprints *combined_fingerprint = 0; + uint32_t version = 0; + char *local_stable_identifier = 0; + signal_buffer *local_fingerprint = 0; + char *remote_stable_identifier = 0; + signal_buffer *remote_fingerprint = 0; + + combined_fingerprint = textsecure__combined_fingerprints__unpack(0, len, data); + if(!combined_fingerprint) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(combined_fingerprint->has_version) { + version = combined_fingerprint->version; + } + + if(combined_fingerprint->localfingerprint) { + if(combined_fingerprint->localfingerprint->has_identifier) { + local_stable_identifier = signal_protocol_str_deserialize_protobuf(&combined_fingerprint->localfingerprint->identifier); + if(!local_stable_identifier) { + result = SG_ERR_NOMEM; + goto complete; + } + } + if(combined_fingerprint->localfingerprint->has_content) { + local_fingerprint = signal_buffer_create( + combined_fingerprint->localfingerprint->content.data, + combined_fingerprint->localfingerprint->content.len); + if(!local_fingerprint) { + result = SG_ERR_NOMEM; + goto complete; + } + } + } + + if(combined_fingerprint->remotefingerprint) { + if(combined_fingerprint->remotefingerprint->has_identifier) { + remote_stable_identifier = signal_protocol_str_deserialize_protobuf(&combined_fingerprint->remotefingerprint->identifier); + if(!remote_stable_identifier) { + result = SG_ERR_NOMEM; + goto complete; + } + } + if(combined_fingerprint->remotefingerprint->has_content) { + remote_fingerprint = signal_buffer_create( + combined_fingerprint->remotefingerprint->content.data, + combined_fingerprint->remotefingerprint->content.len); + if(!remote_fingerprint) { + result = SG_ERR_NOMEM; + goto complete; + } + } + } + + result = scannable_fingerprint_create(scannable, version, + local_stable_identifier, local_fingerprint, + remote_stable_identifier, remote_fingerprint); + +complete: + if(combined_fingerprint) { + textsecure__combined_fingerprints__free_unpacked(combined_fingerprint, 0); + } + if(local_stable_identifier) { + free(local_stable_identifier); + } + if(remote_stable_identifier) { + free(remote_stable_identifier); + } + signal_buffer_free(local_fingerprint); + signal_buffer_free(remote_fingerprint); + return result; +} + +uint32_t scannable_fingerprint_get_version(const scannable_fingerprint *scannable) +{ + assert(scannable); + return scannable->version; +} + +const char *scannable_fingerprint_get_local_stable_identifier(const scannable_fingerprint *scannable) +{ + assert(scannable); + return scannable->local_stable_identifier; +} + +signal_buffer *scannable_fingerprint_get_local_fingerprint(const scannable_fingerprint *scannable) +{ + assert(scannable); + return scannable->local_fingerprint; +} + +const char *scannable_fingerprint_get_remote_stable_identifier(const scannable_fingerprint *scannable) +{ + assert(scannable); + return scannable->remote_stable_identifier; +} + +signal_buffer *scannable_fingerprint_get_remote_fingerprint(const scannable_fingerprint *scannable) +{ + assert(scannable); + return scannable->remote_fingerprint; +} + +int scannable_fingerprint_compare(const scannable_fingerprint *scannable, const scannable_fingerprint *other_scannable) +{ + if(!other_scannable->remote_fingerprint || !other_scannable->local_fingerprint || + other_scannable->version != scannable->version) { + return SG_ERR_FP_VERSION_MISMATCH; + } + + if(scannable->version == 0) { + if(strcmp(scannable->local_stable_identifier, other_scannable->remote_stable_identifier) != 0) { + return SG_ERR_FP_IDENT_MISMATCH; + } + + if(strcmp(scannable->remote_stable_identifier, other_scannable->local_stable_identifier) != 0) { + return SG_ERR_FP_IDENT_MISMATCH; + } + } + + if(signal_buffer_compare(scannable->local_fingerprint, other_scannable->remote_fingerprint) != 0) { + return 0; + } + + if(signal_buffer_compare(scannable->remote_fingerprint, other_scannable->local_fingerprint) != 0) { + return 0; + } + + return 1; +} + +void scannable_fingerprint_destroy(signal_type_base *type) +{ + scannable_fingerprint *scannable = (scannable_fingerprint *)type; + + if(scannable->local_stable_identifier) { + free(scannable->local_stable_identifier); + } + if(scannable->remote_stable_identifier) { + free(scannable->remote_stable_identifier); + } + + signal_buffer_free(scannable->local_fingerprint); + signal_buffer_free(scannable->remote_fingerprint); + + free(scannable); +} diff --git a/Sources/libsignal/fingerprint.h b/Sources/libsignal/fingerprint.h new file mode 100755 index 0000000..a09287c --- /dev/null +++ b/Sources/libsignal/fingerprint.h @@ -0,0 +1,103 @@ +#ifndef FINGERPRINT_H +#define FINGERPRINT_H + +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * Construct a fingerprint generator for 60 digit numerics. + * + * @param generator set to a freshly allocated generator instance + * @param iterations The number of internal iterations to perform in the process of + * generating a fingerprint. This needs to be constant, and synchronized + * across all clients. + * + * The higher the iteration count, the higher the security level: + * - 1024 ~ 109.7 bits + * - 1400 > 110 bits + * - 5200 > 112 bits + * @param scannable_version The format version for the scannable fingerprint (0 or 1) + * @param global_context the global library context + * @return 0 on success, or negative on failure + */ +int fingerprint_generator_create(fingerprint_generator **generator, + int iterations, int scannable_version, + signal_context *global_context); + +/** + * Generate a scannable and displayble fingerprint. + * + * @param local_stable_identifier The client's "stable" identifier. + * @param local_identity_key The client's identity key. + * @param remote_stable_identifier The remote party's "stable" identifier. + * @param remote_identity_key The remote party's identity key. + * @param fingerprint_val Set to a freshly allocated unique fingerprint for this conversation + * @return 0 on success, or negative on failure + */ +int fingerprint_generator_create_for(fingerprint_generator *generator, + const char *local_stable_identifier, const ec_public_key *local_identity_key, + const char *remote_stable_identifier, const ec_public_key *remote_identity_key, + fingerprint **fingerprint_val); + +/** + * Generate a scannable and displayble fingerprint for a list of keys + * + * @param local_stable_identifier The client's "stable" identifier. + * @param local_identity_key_list The client's identity key list. + * @param remote_stable_identifier The remote party's "stable" identifier. + * @param remote_identity_key_list The remote party's identity key list. + * @param fingerprint_val Set to a freshly allocated unique fingerprint for this conversation + * @return 0 on success, or negative on failure + */ +int fingerprint_generator_create_for_list(fingerprint_generator *generator, + const char *local_stable_identifier, const ec_public_key_list *local_identity_key_list, + const char *remote_stable_identifier, const ec_public_key_list *remote_identity_key_list, + fingerprint **fingerprint_val); + +void fingerprint_generator_free(fingerprint_generator *generator); + +int fingerprint_create(fingerprint **fingerprint_val, displayable_fingerprint *displayable, scannable_fingerprint *scannable); +displayable_fingerprint *fingerprint_get_displayable(const fingerprint *fingerprint_val); +scannable_fingerprint *fingerprint_get_scannable(const fingerprint *fingerprint_val); +void fingerprint_destroy(signal_type_base *type); + +int displayable_fingerprint_create(displayable_fingerprint **displayable, const char *local_fingerprint, const char *remote_fingerprint); +const char *displayable_fingerprint_local(const displayable_fingerprint *displayable); +const char *displayable_fingerprint_remote(const displayable_fingerprint *displayable); +const char *displayable_fingerprint_text(const displayable_fingerprint *displayable); +void displayable_fingerprint_destroy(signal_type_base *type); + +int scannable_fingerprint_create(scannable_fingerprint **scannable, + uint32_t version, + const char *local_stable_identifier, const signal_buffer *local_fingerprint, + const char *remote_stable_identifier, const signal_buffer *remote_fingerprint); + +int scannable_fingerprint_serialize(signal_buffer **buffer, const scannable_fingerprint *scannable); +int scannable_fingerprint_deserialize(scannable_fingerprint **scannable, const uint8_t *data, size_t len, signal_context *global_context); +uint32_t scannable_fingerprint_get_version(const scannable_fingerprint *scannable); +const char *scannable_fingerprint_get_local_stable_identifier(const scannable_fingerprint *scannable); +signal_buffer *scannable_fingerprint_get_local_fingerprint(const scannable_fingerprint *scannable); +const char *scannable_fingerprint_get_remote_stable_identifier(const scannable_fingerprint *scannable); +signal_buffer *scannable_fingerprint_get_remote_fingerprint(const scannable_fingerprint *scannable); + +/** + * Compare a scanned QR code with what we expect. + * @param scannable The local scannable data + * @param other_scannable The data from the scanned code + * @retval 1 if the scannable codes match + * @retval 0 if the scannable codes do not match + * @retval SG_ERR_FP_VERSION_MISMATCH if the scanned fingerprint is the wrong version + * @retval SG_ERR_FP_IDENT_MISMATCH if the scanned fingerprint is for the wrong stable identifier + */ +int scannable_fingerprint_compare(const scannable_fingerprint *scannable, const scannable_fingerprint *other_scannable); + +void scannable_fingerprint_destroy(signal_type_base *type); + +#ifdef __cplusplus +} +#endif + +#endif /* FINGERPRINT_H */ diff --git a/Sources/libsignal/group_cipher.c b/Sources/libsignal/group_cipher.c new file mode 100755 index 0000000..05ea320 --- /dev/null +++ b/Sources/libsignal/group_cipher.c @@ -0,0 +1,333 @@ +#include "group_cipher.h" + +#include +#include +#include "protocol.h" +#include "sender_key.h" +#include "sender_key_record.h" +#include "sender_key_state.h" +#include "signal_protocol_internal.h" + +struct group_cipher +{ + signal_protocol_store_context *store; + const signal_protocol_sender_key_name *sender_key_id; + signal_context *global_context; + int (*decrypt_callback)(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context); + int inside_callback; + void *user_data; +}; + +static int group_cipher_get_sender_key(group_cipher *cipher, sender_message_key **sender_key, sender_key_state *state, uint32_t iteration); +static int group_cipher_decrypt_callback(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context); + +int group_cipher_create(group_cipher **cipher, + signal_protocol_store_context *store, const signal_protocol_sender_key_name *sender_key_id, + signal_context *global_context) +{ + group_cipher *result_cipher; + + assert(store); + assert(global_context); + + result_cipher = malloc(sizeof(group_cipher)); + if(!result_cipher) { + return SG_ERR_NOMEM; + } + memset(result_cipher, 0, sizeof(group_cipher)); + + result_cipher->store = store; + result_cipher->sender_key_id = sender_key_id; + result_cipher->global_context = global_context; + + *cipher = result_cipher; + return 0; +} + +void group_cipher_set_user_data(group_cipher *cipher, void *user_data) +{ + assert(cipher); + cipher->user_data = user_data; +} + +void *group_cipher_get_user_data(group_cipher *cipher) +{ + assert(cipher); + return cipher->user_data; +} + +void group_cipher_set_decryption_callback(group_cipher *cipher, + int (*callback)(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context)) +{ + assert(cipher); + cipher->decrypt_callback = callback; +} + +int group_cipher_encrypt(group_cipher *cipher, + const uint8_t *padded_plaintext, size_t padded_plaintext_len, + ciphertext_message **encrypted_message) +{ + int result = 0; + sender_key_message *result_message = 0; + sender_key_record *record = 0; + sender_key_state *state = 0; + ec_private_key *signing_key_private = 0; + sender_message_key *sender_key = 0; + sender_chain_key *next_chain_key = 0; + signal_buffer *sender_cipher_key = 0; + signal_buffer *sender_cipher_iv = 0; + signal_buffer *ciphertext = 0; + + assert(cipher); + signal_lock(cipher->global_context); + + if(cipher->inside_callback == 1) { + result = SG_ERR_INVAL; + goto complete; + } + + result = signal_protocol_sender_key_load_key(cipher->store, &record, cipher->sender_key_id); + if(result < 0) { + goto complete; + } + + result = sender_key_record_get_sender_key_state(record, &state); + if(result < 0) { + goto complete; + } + + signing_key_private = sender_key_state_get_signing_key_private(state); + if(!signing_key_private) { + result = SG_ERR_INVALID_KEY; + goto complete; + } + + result = sender_chain_key_create_message_key(sender_key_state_get_chain_key(state), &sender_key); + if(result < 0) { + goto complete; + } + + sender_cipher_key = sender_message_key_get_cipher_key(sender_key); + sender_cipher_iv = sender_message_key_get_iv(sender_key); + + result = signal_encrypt(cipher->global_context, &ciphertext, SG_CIPHER_AES_CBC_PKCS5, + signal_buffer_data(sender_cipher_key), signal_buffer_len(sender_cipher_key), + signal_buffer_data(sender_cipher_iv), signal_buffer_len(sender_cipher_iv), + padded_plaintext, padded_plaintext_len); + if(result < 0) { + goto complete; + } + + result = sender_key_message_create(&result_message, + sender_key_state_get_key_id(state), + sender_message_key_get_iteration(sender_key), + signal_buffer_data(ciphertext), signal_buffer_len(ciphertext), + signing_key_private, + cipher->global_context); + if(result < 0) { + goto complete; + } + + result = sender_chain_key_create_next(sender_key_state_get_chain_key(state), &next_chain_key); + if(result < 0) { + goto complete; + } + + sender_key_state_set_chain_key(state, next_chain_key); + + result = signal_protocol_sender_key_store_key(cipher->store, cipher->sender_key_id, record); + +complete: + if(result >= 0) { + *encrypted_message = (ciphertext_message *)result_message; + } + else { + if(result == SG_ERR_INVALID_KEY_ID) { + result = SG_ERR_NO_SESSION; + } + SIGNAL_UNREF(result_message); + } + signal_buffer_free(ciphertext); + SIGNAL_UNREF(next_chain_key); + SIGNAL_UNREF(sender_key); + SIGNAL_UNREF(record); + signal_unlock(cipher->global_context); + return result; +} + +int group_cipher_decrypt(group_cipher *cipher, + sender_key_message *ciphertext, void *decrypt_context, + signal_buffer **plaintext) +{ + int result = 0; + signal_buffer *result_buf = 0; + sender_key_record *record = 0; + sender_key_state *state = 0; + sender_message_key *sender_key = 0; + signal_buffer *sender_cipher_key = 0; + signal_buffer *sender_cipher_iv = 0; + signal_buffer *ciphertext_body = 0; + + assert(cipher); + signal_lock(cipher->global_context); + + if(cipher->inside_callback == 1) { + result = SG_ERR_INVAL; + goto complete; + } + + result = signal_protocol_sender_key_load_key(cipher->store, &record, cipher->sender_key_id); + if(result < 0) { + goto complete; + } + + if(sender_key_record_is_empty(record)) { + result = SG_ERR_NO_SESSION; + signal_log(cipher->global_context, SG_LOG_WARNING, "No sender key for: %s::%s::%d", + cipher->sender_key_id->group_id, + cipher->sender_key_id->sender.name, + cipher->sender_key_id->sender.device_id); + goto complete; + } + + result = sender_key_record_get_sender_key_state_by_id(record, &state, sender_key_message_get_key_id(ciphertext)); + if(result < 0) { + goto complete; + } + + result = sender_key_message_verify_signature(ciphertext, sender_key_state_get_signing_key_public(state)); + if(result < 0) { + goto complete; + } + + result = group_cipher_get_sender_key(cipher, &sender_key, state, sender_key_message_get_iteration(ciphertext)); + if(result < 0) { + goto complete; + } + + sender_cipher_key = sender_message_key_get_cipher_key(sender_key); + sender_cipher_iv = sender_message_key_get_iv(sender_key); + ciphertext_body = sender_key_message_get_ciphertext(ciphertext); + + result = signal_decrypt(cipher->global_context, &result_buf, SG_CIPHER_AES_CBC_PKCS5, + signal_buffer_data(sender_cipher_key), signal_buffer_len(sender_cipher_key), + signal_buffer_data(sender_cipher_iv), signal_buffer_len(sender_cipher_iv), + signal_buffer_data(ciphertext_body), signal_buffer_len(ciphertext_body)); + if(result < 0) { + goto complete; + } + + result = group_cipher_decrypt_callback(cipher, result_buf, decrypt_context); + if(result < 0) { + goto complete; + } + + result = signal_protocol_sender_key_store_key(cipher->store, cipher->sender_key_id, record); + +complete: + SIGNAL_UNREF(sender_key); + SIGNAL_UNREF(record); + if(result >= 0) { + *plaintext = result_buf; + } + else { + if(result == SG_ERR_INVALID_KEY || result == SG_ERR_INVALID_KEY_ID) { + result = SG_ERR_INVALID_MESSAGE; + } + signal_buffer_free(result_buf); + } + signal_unlock(cipher->global_context); + return result; +} + +int group_cipher_get_sender_key(group_cipher *cipher, sender_message_key **sender_key, sender_key_state *state, uint32_t iteration) +{ + int result = 0; + sender_message_key *result_key = 0; + sender_chain_key *chain_key = 0; + sender_chain_key *next_chain_key = 0; + sender_message_key *message_key = 0; + + chain_key = sender_key_state_get_chain_key(state); + SIGNAL_REF(chain_key); + + if(sender_chain_key_get_iteration(chain_key) > iteration) { + if(sender_key_state_has_sender_message_key(state, iteration)) { + result_key = sender_key_state_remove_sender_message_key(state, iteration); + if(!result_key) { + result = SG_ERR_UNKNOWN; + } + goto complete; + } + else { + result = SG_ERR_DUPLICATE_MESSAGE; + signal_log(cipher->global_context, SG_LOG_WARNING, + "Received message with old counter: %d, %d", + sender_chain_key_get_iteration(chain_key), iteration); + goto complete; + } + } + + if(iteration - sender_chain_key_get_iteration(chain_key) > 2000) { + result = SG_ERR_INVALID_MESSAGE; + signal_log(cipher->global_context, SG_LOG_WARNING, "Over 2000 messages into the future!"); + goto complete; + } + + while(sender_chain_key_get_iteration(chain_key) < iteration) { + result = sender_chain_key_create_message_key(chain_key, &message_key); + if(result < 0) { + goto complete; + } + + result = sender_key_state_add_sender_message_key(state, message_key); + if(result < 0) { + goto complete; + } + SIGNAL_UNREF(message_key); + + result = sender_chain_key_create_next(chain_key, &next_chain_key); + if(result < 0) { + goto complete; + } + + SIGNAL_UNREF(chain_key); + chain_key = next_chain_key; + next_chain_key = 0; + } + + result = sender_chain_key_create_next(chain_key, &next_chain_key); + if(result < 0) { + goto complete; + } + + sender_key_state_set_chain_key(state, next_chain_key); + result = sender_chain_key_create_message_key(chain_key, &result_key); + +complete: + SIGNAL_UNREF(message_key); + SIGNAL_UNREF(chain_key); + SIGNAL_UNREF(next_chain_key); + if(result >= 0) { + *sender_key = result_key; + } + return result; +} + +static int group_cipher_decrypt_callback(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context) +{ + int result = 0; + if(cipher->decrypt_callback) { + cipher->inside_callback = 1; + result = cipher->decrypt_callback(cipher, plaintext, decrypt_context); + cipher->inside_callback = 0; + } + return result; +} + +void group_cipher_free(group_cipher *cipher) +{ + if(cipher) { + free(cipher); + } +} diff --git a/Sources/libsignal/group_cipher.h b/Sources/libsignal/group_cipher.h new file mode 100755 index 0000000..50b194c --- /dev/null +++ b/Sources/libsignal/group_cipher.h @@ -0,0 +1,114 @@ +#ifndef GROUP_CIPHER_H +#define GROUP_CIPHER_H + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * The main entry point for Signal Protocol group encrypt/decrypt operations. + * + * Once a session has been established with group_session_builder and a + * sender_key_distribution_message has been distributed to each member of + * the group, this class can be used for all subsequent encrypt/decrypt + * operations within that session (i.e. until group membership changes). + */ + +/** + * Construct a group cipher for encrypt/decrypt operations. + * + * The store and global contexts must remain valid for the lifetime of the + * group cipher. + * + * When finished, free the returned instance by calling group_cipher_free(). + * + * @param cipher set to a freshly allocated group cipher instance + * @param store the signal_protocol_store_context to store all state information in + * @param sender_key_id the sender that messages will be encrypted to or decrypted from + * @param global_context the global library context + * @return 0 on success, or negative on failure + */ +int group_cipher_create(group_cipher **cipher, + signal_protocol_store_context *store, const signal_protocol_sender_key_name *sender_key_id, + signal_context *global_context); + +/** + * Set the optional user data pointer for the group cipher. + * + * This is to give callback functions a way of accessing app specific + * context information for this cipher. + */ +void group_cipher_set_user_data(group_cipher *cipher, void *user_data); + +/** + * Get the optional user data pointer for the group cipher. + * + * This is to give callback functions a way of accessing app specific + * context information for this cipher. + */ +void *group_cipher_get_user_data(group_cipher *cipher); + +/** + * Set the callback function that is called during the decrypt process. + * + * The callback function is called from within group_cipher_decrypt() after + * decryption is complete but before the updated session state has been + * committed to the session store. If the callback function returns a + * negative value, then the decrypt function will immediately fail with + * an error. + * + * This a callback allows some implementations to store the committed plaintext + * to their local message store first, in case they are concerned with a crash + * or write error happening between the time the session state is updated but + * before they're able to successfully store the plaintext to disk. + * + * @param callback the callback function to set + */ +void group_cipher_set_decryption_callback(group_cipher *cipher, + int (*callback)(group_cipher *cipher, signal_buffer *plaintext, void *decrypt_context)); + +/** + * Encrypt a message. + * + * @param padded_plaintext The plaintext message bytes, optionally padded to a constant multiple. + * @param padded_plaintext_len The length of the data pointed to by padded_message + * @param encrypted_message Set to a ciphertext message encrypted to the group+sender+device tuple. + * + * @retval SG_SUCCESS Success + * @retval SG_ERR_NO_SESSION if there is no established session for this contact. + * @retval SG_ERR_INVALID_KEY if there is no valid private key for this session. + */ +int group_cipher_encrypt(group_cipher *cipher, + const uint8_t *padded_plaintext, size_t padded_plaintext_len, + ciphertext_message **encrypted_message); + +/** + * Decrypt a message. + * + * @param ciphertext The sender_key_message to decrypt. + * @param decrypt_context Optional context pointer associated with the + * ciphertext, which is passed to the decryption callback function + * @param plaintext Set to a newly allocated buffer containing the plaintext. + * + * @retval SG_SUCCESS Success + * @retval SG_ERR_INVALID_MESSAGE if the input is not valid ciphertext. + * @retval SG_ERR_DUPLICATE_MESSAGE if the input is a message that has already been received. + * @retval SG_ERR_LEGACY_MESSAGE if the input is a message formatted by a protocol version that + * is no longer supported. + * @retval SG_ERR_NO_SESSION if there is no established session for this contact. + */ +int group_cipher_decrypt(group_cipher *cipher, + sender_key_message *ciphertext, void *decrypt_context, + signal_buffer **plaintext); + +void group_cipher_free(group_cipher *cipher); + +#ifdef __cplusplus +} +#endif + +#endif /* GROUP_CIPHER_H */ diff --git a/Sources/libsignal/group_session_builder.c b/Sources/libsignal/group_session_builder.c new file mode 100755 index 0000000..13db334 --- /dev/null +++ b/Sources/libsignal/group_session_builder.c @@ -0,0 +1,149 @@ +#include "group_session_builder.h" + +#include +#include +#include "sender_key_record.h" +#include "sender_key_state.h" +#include "sender_key.h" +#include "protocol.h" +#include "key_helper.h" +#include "signal_protocol_internal.h" + +struct group_session_builder +{ + signal_protocol_store_context *store; + signal_context *global_context; +}; + +int group_session_builder_create(group_session_builder **builder, + signal_protocol_store_context *store, signal_context *global_context) +{ + group_session_builder *result = 0; + + assert(store); + assert(global_context); + + result = malloc(sizeof(group_session_builder)); + if(!result) { + return SG_ERR_NOMEM; + } + memset(result, 0, sizeof(group_session_builder)); + + result->store = store; + result->global_context = global_context; + + *builder = result; + return 0; +} + +int group_session_builder_process_session(group_session_builder *builder, + const signal_protocol_sender_key_name *sender_key_name, + sender_key_distribution_message *distribution_message) +{ + int result = 0; + sender_key_record *record = 0; + + assert(builder); + assert(builder->store); + signal_lock(builder->global_context); + + result = signal_protocol_sender_key_load_key(builder->store, &record, sender_key_name); + if(result < 0) { + goto complete; + } + + result = sender_key_record_add_sender_key_state(record, + sender_key_distribution_message_get_id(distribution_message), + sender_key_distribution_message_get_iteration(distribution_message), + sender_key_distribution_message_get_chain_key(distribution_message), + sender_key_distribution_message_get_signature_key(distribution_message)); + if(result < 0) { + goto complete; + } + + result = signal_protocol_sender_key_store_key(builder->store, sender_key_name, record); + +complete: + SIGNAL_UNREF(record); + signal_unlock(builder->global_context); + return result; +} + +int group_session_builder_create_session(group_session_builder *builder, + sender_key_distribution_message **distribution_message, + const signal_protocol_sender_key_name *sender_key_name) +{ + int result = 0; + sender_key_record *record = 0; + sender_key_state *state = 0; + uint32_t sender_key_id = 0; + signal_buffer *sender_key = 0; + ec_key_pair *sender_signing_key = 0; + sender_chain_key *chain_key = 0; + signal_buffer *seed = 0; + + assert(builder); + assert(builder->store); + signal_lock(builder->global_context); + + result = signal_protocol_sender_key_load_key(builder->store, &record, sender_key_name); + if(result < 0) { + goto complete; + } + + if(sender_key_record_is_empty(record)) { + result = signal_protocol_key_helper_generate_sender_key_id(&sender_key_id, builder->global_context); + if(result < 0) { + goto complete; + } + + result = signal_protocol_key_helper_generate_sender_key(&sender_key, builder->global_context); + if(result < 0) { + goto complete; + } + + result = signal_protocol_key_helper_generate_sender_signing_key(&sender_signing_key, builder->global_context); + if(result < 0) { + goto complete; + } + + result = sender_key_record_set_sender_key_state(record, sender_key_id, 0, sender_key, sender_signing_key); + if(result < 0) { + goto complete; + } + + result = signal_protocol_sender_key_store_key(builder->store, sender_key_name, record); + if(result < 0) { + goto complete; + } + } + + result = sender_key_record_get_sender_key_state(record, &state); + if(result < 0) { + goto complete; + } + + chain_key = sender_key_state_get_chain_key(state); + seed = sender_chain_key_get_seed(chain_key); + + result = sender_key_distribution_message_create(distribution_message, + sender_key_state_get_key_id(state), + sender_chain_key_get_iteration(chain_key), + signal_buffer_data(seed), signal_buffer_len(seed), + sender_key_state_get_signing_key_public(state), + builder->global_context); + +complete: + signal_buffer_free(sender_key); + SIGNAL_UNREF(sender_signing_key); + SIGNAL_UNREF(record); + signal_unlock(builder->global_context); + return result; +} + +void group_session_builder_free(group_session_builder *builder) +{ + if(builder) { + free(builder); + } +} diff --git a/Sources/libsignal/group_session_builder.h b/Sources/libsignal/group_session_builder.h new file mode 100755 index 0000000..1d87d53 --- /dev/null +++ b/Sources/libsignal/group_session_builder.h @@ -0,0 +1,70 @@ +#ifndef GROUP_SESSION_BUILDER_H +#define GROUP_SESSION_BUILDER_H + +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Group session builder is responsible for setting up group sender key encrypted sessions. + * + * Once a session has been established, group_cipher can be used to + * encrypt/decrypt messages in that session. + *

+ * The built sessions are unidirectional: they can be used either for sending + * or for receiving, but not both. + * + * Sessions are constructed per (groupId + senderId + deviceId) tuple. Remote logical users + * are identified by their senderId, and each logical recipientId can have multiple physical + * devices. + */ + +/** + * Constructs a group session builder. + * + * The store and global contexts must remain valid for the lifetime of the + * session builder. + * + * When finished, free the returned instance by calling group_session_builder_free(). + * + * @param builder set to a freshly allocated group session builder instance + * @param store the signal_protocol_store_context to store all state information in + * @param global_context the global library context + * @return 0 on success, or negative on failure + */ +int group_session_builder_create(group_session_builder **builder, + signal_protocol_store_context *store, signal_context *global_context); + +/** + * Construct a group session for receiving messages from senderKeyName. + * + * @param sender_key_name the (groupId, senderId, deviceId) tuple associated + * with the sender_key_distribution_message + * @param distribution_message a received sender_key_distribution_message + * @return 0 on success, or negative on failure + */ +int group_session_builder_process_session(group_session_builder *builder, + const signal_protocol_sender_key_name *sender_key_name, + sender_key_distribution_message *distribution_message); + +/** + * Construct a group session for sending messages. + * + * @param distribution_message a distribution message to be allocated and populated + * @param sender_key_name the (groupId, senderId, deviceId) tuple. In this + * case, the sender should be the caller + * @return 0 on success, or negative on failure + */ +int group_session_builder_create_session(group_session_builder *builder, + sender_key_distribution_message **distribution_message, + const signal_protocol_sender_key_name *sender_key_name); + +void group_session_builder_free(group_session_builder *builder); + +#ifdef __cplusplus +} +#endif + +#endif /* GROUP_SESSION_BUILDER_H */ diff --git a/Sources/libsignal/hkdf.c b/Sources/libsignal/hkdf.c new file mode 100755 index 0000000..d8df253 --- /dev/null +++ b/Sources/libsignal/hkdf.c @@ -0,0 +1,256 @@ +#include "hkdf.h" + +#include +#include +#include +#include +#include + +#include "signal_protocol_internal.h" + +#define HASH_OUTPUT_SIZE 32 + +#define MIN(a,b) (((a)<(b))?(a):(b)) +#define MAX(a,b) (((a)>(b))?(a):(b)) + +struct hkdf_context +{ + signal_type_base base; + signal_context *global_context; + int iteration_start_offset; +}; + +int hkdf_create(hkdf_context **context, int message_version, signal_context *global_context) +{ + assert(global_context); + *context = malloc(sizeof(hkdf_context)); + if(!(*context)) { + return SG_ERR_NOMEM; + } + + memset(*context, 0, sizeof(hkdf_context)); + + SIGNAL_INIT(*context, hkdf_destroy); + (*context)->global_context = global_context; + + if(message_version == 2) { + (*context)->iteration_start_offset = 0; + } + else if(message_version == 3) { + (*context)->iteration_start_offset = 1; + } + else { + free(*context); + return SG_ERR_INVAL; + } + + return 0; +} + +ssize_t hkdf_extract(hkdf_context *context, + uint8_t **output, + const uint8_t *salt, size_t salt_len, + const uint8_t *input_key_material, size_t input_key_material_len) +{ + int result = 0; + signal_buffer *mac_buffer = 0; + uint8_t *mac = 0; + size_t mac_len = 0; + void *hmac_context; + + assert(context); + + result = signal_hmac_sha256_init(context->global_context, + &hmac_context, salt, salt_len); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_update(context->global_context, + hmac_context, input_key_material, input_key_material_len); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_final(context->global_context, + hmac_context, &mac_buffer); + if(result < 0) { + goto complete; + } + + mac_len = signal_buffer_len(mac_buffer); + mac = malloc(mac_len); + if(!mac) { + result = SG_ERR_NOMEM; + goto complete; + } + + memcpy(mac, signal_buffer_data(mac_buffer), mac_len); + +complete: + signal_hmac_sha256_cleanup(context->global_context, hmac_context); + signal_buffer_free(mac_buffer); + + if(result >= 0) { + *output = mac; + return (ssize_t)mac_len; + } + else { + return result; + } +} + +ssize_t hkdf_expand(hkdf_context *context, + uint8_t **output, + const uint8_t *prk, size_t prk_len, + const uint8_t *info, size_t info_len, + size_t output_len) +{ + int iterations = (int)ceil((double)output_len / (double)HASH_OUTPUT_SIZE); + size_t remaining_len = output_len; + signal_buffer *step_buffer = 0; + size_t step_size = 0; + uint8_t *result_buf = 0; + size_t result_buf_len = 0; + void *hmac_context = 0; + int result = 0; + uint8_t i; + + assert(context); + + for(i = context->iteration_start_offset; i < iterations + context->iteration_start_offset; i++) { + result = signal_hmac_sha256_init(context->global_context, + &hmac_context, prk, prk_len); + if(result < 0) { + goto complete; + } + + if(step_buffer) { + result = signal_hmac_sha256_update(context->global_context, + hmac_context, + signal_buffer_data(step_buffer), + signal_buffer_len(step_buffer)); + if(result < 0) { + goto complete; + } + signal_buffer_free(step_buffer); + step_buffer = 0; + } + + if(info) { + result = signal_hmac_sha256_update(context->global_context, + hmac_context, info, info_len); + if(result < 0) { + goto complete; + } + } + + result = signal_hmac_sha256_update(context->global_context, + hmac_context, &i, sizeof(uint8_t)); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_final(context->global_context, + hmac_context, &step_buffer); + if(result < 0) { + goto complete; + } + + signal_hmac_sha256_cleanup(context->global_context, hmac_context); + hmac_context = 0; + + step_size = MIN(remaining_len, signal_buffer_len(step_buffer)); + + if(!result_buf) { + result_buf = malloc(step_size); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + memcpy(result_buf, signal_buffer_data(step_buffer), step_size); + result_buf_len = step_size; + } + else { + uint8_t *tmp_buf = realloc(result_buf, result_buf_len + step_size); + if(!tmp_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + result_buf = tmp_buf; + memcpy(result_buf + result_buf_len, signal_buffer_data(step_buffer), step_size); + result_buf_len += step_size; + } + remaining_len -= step_size; + } + +complete: + if(hmac_context) { + signal_hmac_sha256_cleanup(context->global_context, hmac_context); + } + signal_buffer_free(step_buffer); + if(result < 0) { + free(result_buf); + return result; + } + else { + *output = result_buf; + return (ssize_t)result_buf_len; + } +} + +ssize_t hkdf_derive_secrets(hkdf_context *context, + uint8_t **output, + const uint8_t *input_key_material, size_t input_key_material_len, + const uint8_t *salt, size_t salt_len, + const uint8_t *info, size_t info_len, + size_t output_len) +{ + ssize_t result = 0; + uint8_t *prk = 0; + ssize_t prk_len = 0; + + assert(context); + + prk_len = hkdf_extract(context, &prk, salt, salt_len, input_key_material, input_key_material_len); + if(prk_len < 0) { + signal_log(context->global_context, SG_LOG_ERROR, "hkdf_extract error: %d", prk_len); + return prk_len; + } + + result = hkdf_expand(context, output, prk, (size_t)prk_len, info, info_len, output_len); + + if(prk) { + free(prk); + } + + return result; +} + +int hkdf_compare(const hkdf_context *context1, const hkdf_context *context2) +{ + if(context1 == context2) { + return 0; + } + else if(context1 == 0 && context2 != 0) { + return -1; + } + else if(context1 != 0 && context2 == 0) { + return 1; + } + else if(context1->iteration_start_offset < context2->iteration_start_offset) { + return -1; + } + else if(context1->iteration_start_offset > context2->iteration_start_offset) { + return 1; + } + else { + return 0; + } +} + +void hkdf_destroy(signal_type_base *type) +{ + hkdf_context *context = (hkdf_context *)type; + free(context); +} diff --git a/Sources/libsignal/hkdf.h b/Sources/libsignal/hkdf.h new file mode 100755 index 0000000..43ee870 --- /dev/null +++ b/Sources/libsignal/hkdf.h @@ -0,0 +1,29 @@ +#ifndef HKDF_H +#define HKDF_H + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +int hkdf_create(hkdf_context **context, int message_version, signal_context *global_context); + +ssize_t hkdf_derive_secrets(hkdf_context *context, + uint8_t **output, + const uint8_t *input_key_material, size_t input_key_material_len, + const uint8_t *salt, size_t salt_len, + const uint8_t *info, size_t info_len, + size_t output_len); + +int hkdf_compare(const hkdf_context *context1, const hkdf_context *context2); + +void hkdf_destroy(signal_type_base *type); + +#ifdef __cplusplus +} +#endif + +#endif /* HKDF_H */ diff --git a/Sources/libsignal/includes/curve.h b/Sources/libsignal/includes/curve.h new file mode 100755 index 0000000..ae6cc67 --- /dev/null +++ b/Sources/libsignal/includes/curve.h @@ -0,0 +1,196 @@ +#ifndef CURVE_H +#define CURVE_H + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define CURVE_SIGNATURE_LEN 64 +#define VRF_SIGNATURE_LEN 96 + +int curve_internal_fast_tests(int silent); + +int curve_decode_point(ec_public_key **public_key, const uint8_t *key_data, size_t key_len, signal_context *global_context); +int ec_public_key_compare(const ec_public_key *key1, const ec_public_key *key2); +int ec_public_key_memcmp(const ec_public_key *key1, const ec_public_key *key2); + +/** + * Serialize the public key into a buffer that can be stored. + * The format of this data is compatible with the input format of + * curve_decode_point(). + * + * @param buffer Pointer to a buffer that will be allocated by this function + * and filled with the contents of the key. The caller is responsible for + * freeing this buffer with signal_buffer_free(). + * @param key Key to serialize + * @return 0 on success, negative on failure + */ +int ec_public_key_serialize(signal_buffer **buffer, const ec_public_key *key); + +void ec_public_key_destroy(signal_type_base *type); + +int curve_decode_private_point(ec_private_key **private_key, const uint8_t *key_data, size_t key_len, signal_context *global_context); +int ec_private_key_compare(const ec_private_key *key1, const ec_private_key *key2); + +/** + * Serialize the private key into a buffer that can be stored. + * The format of this data is compatible with the input format of + * curve_decode_private_point(). + * + * @param buffer Pointer to a buffer that will be allocated by this function + * and filled with the contents of the key. The caller is responsible for + * freeing this buffer with signal_buffer_free(). + * @param key Key to serialize + * @return 0 on success, negative on failure + */ +int ec_private_key_serialize(signal_buffer **buffer, const ec_private_key *key); + +void ec_private_key_destroy(signal_type_base *type); + +int ec_key_pair_create(ec_key_pair **key_pair, ec_public_key *public_key, ec_private_key *private_key); +ec_public_key *ec_key_pair_get_public(const ec_key_pair *key_pair); +ec_private_key *ec_key_pair_get_private(const ec_key_pair *key_pair); +void ec_key_pair_destroy(signal_type_base *type); + +int curve_generate_private_key(signal_context *context, ec_private_key **private_key); +int curve_generate_public_key(ec_public_key **public_key, const ec_private_key *private_key); + +/** + * Generates a Curve25519 keypair. + * + * @param key_pair Set to a randomly generated Curve25519 keypair on success. + * @return 0 on success, negative on failure + */ +int curve_generate_key_pair(signal_context *context, ec_key_pair **key_pair); + +/** + * Allocate a new ec_public_key list + * + * @return pointer to the allocated list, or 0 on failure + */ +ec_public_key_list *ec_public_key_list_alloc(void); + +/** + * Copy an ec_public_key list + * + * @return pointer to the copy of the list, or 0 on failure + */ +ec_public_key_list *ec_public_key_list_copy(const ec_public_key_list *list); + +/** + * Push a new value onto the end of the list + * + * @param list the list + * @param value the value to push + * @return 0 on success, negative on failure + */ +int ec_public_key_list_push_back(ec_public_key_list *list, ec_public_key *value); + +/** + * Gets the size of the list. + * + * @param list the list + * @return the size of the list + */ +unsigned int ec_public_key_list_size(const ec_public_key_list *list); + +/** + * Gets the value of the element at a particular index in the list + * + * @param list the list + * @param index the index within the list + * @return the value + */ +ec_public_key *ec_public_key_list_at(const ec_public_key_list *list, unsigned int index); + +/** + * Sorts the list based on a comparison of the key data. + * + * @param list the list + */ +void ec_public_key_list_sort(ec_public_key_list *list); + +/** + * Free the ec_public_key list + * @param list the list to free + */ +void ec_public_key_list_free(ec_public_key_list *list); + +/** + * Calculates an ECDH agreement. + * + * @param shared_key_data Set to a 32-byte shared secret on success. + * @param public_key The Curve25519 (typically remote party's) public key. + * @param private_key The Curve25519 (typically yours) private key. + * @return length of the shared secret on success, negative on failure + */ +int curve_calculate_agreement(uint8_t **shared_key_data, const ec_public_key *public_key, const ec_private_key *private_key); + +/** + * Verify a Curve25519 signature. + * + * @param signing_key The Curve25519 public key the signature belongs to. + * @param message_data The message that was signed. + * @param message_len The length of the message that was signed. + * @param signature_data The signature to verify. + * @param signature_len The length of the signature to verify. + * @return 1 if valid, 0 if invalid, negative on failure + */ +int curve_verify_signature(const ec_public_key *signing_key, + const uint8_t *message_data, size_t message_len, + const uint8_t *signature_data, size_t signature_len); + +/** + * Calculates a Curve25519 signature. + * + * @param signature Set to a 64-byte signature on success. + * @param signing_key The private Curve25519 key to create the signature with. + * @param message_data The message to sign. + * @param message_len The length of the message to sign. + * @return 0 on success, negative on failure + */ +int curve_calculate_signature(signal_context *context, + signal_buffer **signature, + const ec_private_key *signing_key, + const uint8_t *message_data, size_t message_len); + +/** + * Verify a Unique Curve25519 signature. + * + * @param vrf_output Set to VRF output on success + * @param signing_key The Curve25519 public key the unique signature belongs to. + * @param message_data The message that was signed. + * @param message_len The length of the message that was signed. + * @param signature_data The signature to verify. + * @param signature_len The length of the signature to verify. + * @return 1 if valid, 0 if invalid, negative on failure + */ +int curve_verify_vrf_signature(signal_context *context, + signal_buffer **vrf_output, + const ec_public_key *signing_key, + const uint8_t *message_data, size_t message_len, + const uint8_t *signature_data, size_t signature_len); + +/** + * Calculates a Unique Curve25519 signature. + * + * @param signature Set to a 96-byte signature on success. + * @param signing_key The private Curve25519 key to create the signature with. + * @param message_data The message to sign. + * @param message_len The length of the message to sign. + * @return 0 on success, negative on failure + */ +int curve_calculate_vrf_signature(signal_context *context, + signal_buffer **signature, + const ec_private_key *signing_key, + const uint8_t *message_data, size_t message_len); + +#ifdef __cplusplus +} +#endif + +#endif /* CURVE_H */ diff --git a/Sources/libsignal/includes/key_helper.h b/Sources/libsignal/includes/key_helper.h new file mode 100755 index 0000000..f0e5e56 --- /dev/null +++ b/Sources/libsignal/includes/key_helper.h @@ -0,0 +1,130 @@ +#ifndef KEY_HELPER_H +#define KEY_HELPER_H + +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** +* Generate an identity key pair. Clients should only do this once, +* at install time. +* +* @param key_pair the generated identity key pair +* @return 0 on success, or negative on failure +*/ +int signal_protocol_key_helper_generate_identity_key_pair(ratchet_identity_key_pair **key_pair, signal_context *global_context); + +/** + * Generate a registration ID. Clients should only do this once, + * at install time. + * + * @param registration_id set to the generated registration ID + * @param extended_range By default (0), the generated registration + * ID is sized to require the minimal possible protobuf + * encoding overhead. Specify true (1) if the caller needs + * the full range of MAX_INT at the cost of slightly + * higher encoding overhead. + * @return 0 on success, or negative on failure + */ +int signal_protocol_key_helper_generate_registration_id(uint32_t *registration_id, int extended_range, signal_context *global_context); + +/** + * Generate a random number between 0 (inclusive) and the provided maximum (exclusive). + * + * @param value set to the next random number + * @param max the maximum bound on the value of the random number + * @return 0 on success, or negative on failure + */ +int signal_protocol_key_helper_get_random_sequence(int *value, int max, signal_context *global_context); + +/** + * Generate a list of PreKeys. Clients should do this at install time, and + * subsequently any time the list of PreKeys stored on the server runs low. + * + * Pre key IDs are shorts, so they will eventually be repeated. Clients should + * store pre keys in a circular buffer, so that they are repeated as infrequently + * as possible. + * + * When finished with this list, the caller should free it by calling + * signal_protocol_key_helper_key_list_free(). + * + * @param head pointer to the head of the key list + * @param start the starting pre key ID, inclusive. + * @param count the number of pre keys to generate. + * @return 0 on success, or negative on failure + */ +int signal_protocol_key_helper_generate_pre_keys(signal_protocol_key_helper_pre_key_list_node **head, + unsigned int start, unsigned int count, + signal_context *global_context); + +/** + * Get the pre key element for the current node in the key list. + * + * @param node current list node + * @return pre key element + */ +session_pre_key *signal_protocol_key_helper_key_list_element(const signal_protocol_key_helper_pre_key_list_node *node); + +/** + * Get the next element in the key list. + * + * @param node current list node + * @return next list node, or 0 if at the end of the list + */ +signal_protocol_key_helper_pre_key_list_node *signal_protocol_key_helper_key_list_next(const signal_protocol_key_helper_pre_key_list_node *node); + +/** + * Free the key list. + * + * @param head pointer to the head of the list to free + */ +void signal_protocol_key_helper_key_list_free(signal_protocol_key_helper_pre_key_list_node *head); + +/** + * Generate a signed pre key + * + * @param signed_pre_key set to the generated pre key + * @param identity_key_pair the local client's identity key pair. + * @param signed_pre_key_id the pre key ID to assign the generated signed pre key + * @param timestamp the current time in milliseconds since the UNIX epoch + * + * @return 0 on success, or negative on failure + */ +int signal_protocol_key_helper_generate_signed_pre_key(session_signed_pre_key **signed_pre_key, + const ratchet_identity_key_pair *identity_key_pair, + uint32_t signed_pre_key_id, + uint64_t timestamp, + signal_context *global_context); + +/* + * Generate a sender signing key pair + * +* @param key_pair the generated key pair +* @return 0 on success, or negative on failure + */ +int signal_protocol_key_helper_generate_sender_signing_key(ec_key_pair **key_pair, signal_context *global_context); + +/* + * Generate a sender key + * + * @param key_buffer buffer to be allocated and populated with the result + * @return 0 on success, or negative on failure + */ +int signal_protocol_key_helper_generate_sender_key(signal_buffer **key_buffer, signal_context *global_context); + +/* + * Generate a sender key ID + * + * @param key_id assigned to the generated ID + * @return 0 on success, or negative on failure + */ +int signal_protocol_key_helper_generate_sender_key_id(uint32_t *key_id, signal_context *global_context); + +#ifdef __cplusplus +} +#endif + +#endif /* KEY_HELPER_H */ diff --git a/Sources/libsignal/includes/protocol.h b/Sources/libsignal/includes/protocol.h new file mode 100755 index 0000000..73c2df9 --- /dev/null +++ b/Sources/libsignal/includes/protocol.h @@ -0,0 +1,126 @@ +#ifndef PROTOCOL_H +#define PROTOCOL_H + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define KEY_EXCHANGE_INITIATE_FLAG 0x01 +#define KEY_EXCHANGE_RESPONSE_FLAG 0X02 +#define KEY_EXCHANGE_SIMULTAENOUS_INITIATE_FLAG 0x04 + +#define CIPHERTEXT_UNSUPPORTED_VERSION 1 +#define CIPHERTEXT_CURRENT_VERSION 3 + +#define CIPHERTEXT_SIGNAL_TYPE 2 +#define CIPHERTEXT_PREKEY_TYPE 3 +#define CIPHERTEXT_SENDERKEY_TYPE 4 +#define CIPHERTEXT_SENDERKEY_DISTRIBUTION_TYPE 5 + +/* Worst case overhead. Not always accurate, but good enough for padding. */ +#define CIPHERTEXT_ENCRYPTED_MESSAGE_OVERHEAD 53 + +int ciphertext_message_get_type(const ciphertext_message *message); +signal_buffer *ciphertext_message_get_serialized(const ciphertext_message *message); + +int signal_message_create(signal_message **message, uint8_t message_version, + const uint8_t *mac_key, size_t mac_key_len, + ec_public_key *sender_ratchet_key, uint32_t counter, uint32_t previous_counter, + const uint8_t *ciphertext, size_t ciphertext_len, + ec_public_key *sender_identity_key, ec_public_key *receiver_identity_key, + signal_context *global_context); + +int signal_message_deserialize(signal_message **message, const uint8_t *data, size_t len, + signal_context *global_context); + +int signal_message_copy(signal_message **message, signal_message *other_message, signal_context *global_context); + +ec_public_key *signal_message_get_sender_ratchet_key(const signal_message *message); + +uint8_t signal_message_get_message_version(const signal_message *message); + +uint32_t signal_message_get_counter(const signal_message *message); + +signal_buffer *signal_message_get_body(const signal_message *message); + +/** + * Verify the MAC on the Signal message. + * + * @return 1 if verified, 0 if invalid, negative on error + */ +int signal_message_verify_mac(signal_message *message, + ec_public_key *sender_identity_key, + ec_public_key *receiver_identity_key, + const uint8_t *mac_key, size_t mac_key_len, + signal_context *global_context); + +int signal_message_is_legacy(const uint8_t *data, size_t len); + +void signal_message_destroy(signal_type_base *type); + +int pre_key_signal_message_create(pre_key_signal_message **pre_key_message, + uint8_t message_version, uint32_t registration_id, const uint32_t *pre_key_id, + uint32_t signed_pre_key_id, ec_public_key *base_key, ec_public_key *identity_key, + signal_message *message, + signal_context *global_context); + +int pre_key_signal_message_deserialize(pre_key_signal_message **message, + const uint8_t *data, size_t len, + signal_context *global_context); + +int pre_key_signal_message_copy(pre_key_signal_message **message, pre_key_signal_message *other_message, signal_context *global_context); + +uint8_t pre_key_signal_message_get_message_version(const pre_key_signal_message *message); +ec_public_key *pre_key_signal_message_get_identity_key(const pre_key_signal_message *message); +uint32_t pre_key_signal_message_get_registration_id(const pre_key_signal_message *message); +int pre_key_signal_message_has_pre_key_id(const pre_key_signal_message *message); +uint32_t pre_key_signal_message_get_pre_key_id(const pre_key_signal_message *message); +uint32_t pre_key_signal_message_get_signed_pre_key_id(const pre_key_signal_message *message); +ec_public_key *pre_key_signal_message_get_base_key(const pre_key_signal_message *message); +signal_message *pre_key_signal_message_get_signal_message(const pre_key_signal_message *message); + +void pre_key_signal_message_destroy(signal_type_base *type); + +int sender_key_message_create(sender_key_message **message, + uint32_t key_id, uint32_t iteration, + const uint8_t *ciphertext, size_t ciphertext_len, + ec_private_key *signature_key, + signal_context *global_context); +int sender_key_message_deserialize(sender_key_message **message, + const uint8_t *data, size_t len, + signal_context *global_context); +int sender_key_message_copy(sender_key_message **message, sender_key_message *other_message, signal_context *global_context); + +uint32_t sender_key_message_get_key_id(sender_key_message *message); +uint32_t sender_key_message_get_iteration(sender_key_message *message); +signal_buffer *sender_key_message_get_ciphertext(sender_key_message *message); +int sender_key_message_verify_signature(sender_key_message *message, ec_public_key *signature_key); + +void sender_key_message_destroy(signal_type_base *type); + +int sender_key_distribution_message_create(sender_key_distribution_message **message, + uint32_t id, uint32_t iteration, + const uint8_t *chain_key, size_t chain_key_len, + ec_public_key *signature_key, + signal_context *global_context); +int sender_key_distribution_message_deserialize(sender_key_distribution_message **message, + const uint8_t *data, size_t len, + signal_context *global_context); +int sender_key_distribution_message_copy(sender_key_distribution_message **message, sender_key_distribution_message *other_message, signal_context *global_context); + +uint32_t sender_key_distribution_message_get_id(sender_key_distribution_message *message); +uint32_t sender_key_distribution_message_get_iteration(sender_key_distribution_message *message); +signal_buffer *sender_key_distribution_message_get_chain_key(sender_key_distribution_message *message); +ec_public_key *sender_key_distribution_message_get_signature_key(sender_key_distribution_message *message); + +void sender_key_distribution_message_destroy(signal_type_base *type); + +#ifdef __cplusplus +} +#endif + +#endif /* PROTOCOL_H */ diff --git a/Sources/libsignal/includes/ratchet.h b/Sources/libsignal/includes/ratchet.h new file mode 100755 index 0000000..e42c98a --- /dev/null +++ b/Sources/libsignal/includes/ratchet.h @@ -0,0 +1,90 @@ +#ifndef RATCHET_H +#define RATCHET_H + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +int ratchet_chain_key_create(ratchet_chain_key **chain_key, hkdf_context *kdf, + const uint8_t *key, size_t key_len, uint32_t index, + signal_context *global_context); +int ratchet_chain_key_get_key(const ratchet_chain_key *chain_key, signal_buffer **buffer); +uint32_t ratchet_chain_key_get_index(const ratchet_chain_key *chain_key); +int ratchet_chain_key_get_message_keys(ratchet_chain_key *chain_key, ratchet_message_keys *message_keys); +int ratchet_chain_key_create_next(const ratchet_chain_key *chain_key, ratchet_chain_key **next_chain_key); +void ratchet_chain_key_destroy(signal_type_base *type); + +int ratchet_root_key_create(ratchet_root_key **root_key, hkdf_context *kdf, + const uint8_t *key, size_t key_len, + signal_context *global_context); +int ratchet_root_key_create_chain(ratchet_root_key *root_key, + ratchet_root_key **new_root_key, ratchet_chain_key **new_chain_key, + ec_public_key *their_ratchet_key, + ec_private_key *our_ratchet_key_private); +int ratchet_root_key_get_key(ratchet_root_key *root_key, signal_buffer **buffer); +int ratchet_root_key_compare(const ratchet_root_key *key1, const ratchet_root_key *key2); +void ratchet_root_key_destroy(signal_type_base *type); + +int ratchet_identity_key_pair_create( + ratchet_identity_key_pair **key_pair, + ec_public_key *public_key, + ec_private_key *private_key); +int ratchet_identity_key_pair_serialize(signal_buffer **buffer, const ratchet_identity_key_pair *key_pair); +int ratchet_identity_key_pair_deserialize(ratchet_identity_key_pair **key_pair, const uint8_t *data, size_t len, signal_context *global_context); +ec_public_key *ratchet_identity_key_pair_get_public(const ratchet_identity_key_pair *key_pair); +ec_private_key *ratchet_identity_key_pair_get_private(const ratchet_identity_key_pair *key_pair); +void ratchet_identity_key_pair_destroy(signal_type_base *type); + +typedef struct symmetric_signal_protocol_parameters symmetric_signal_protocol_parameters; +typedef struct alice_signal_protocol_parameters alice_signal_protocol_parameters; +typedef struct bob_signal_protocol_parameters bob_signal_protocol_parameters; + +int symmetric_signal_protocol_parameters_create( + symmetric_signal_protocol_parameters **parameters, + ratchet_identity_key_pair *our_identity_key, + ec_key_pair *our_base_key, + ec_key_pair *our_ratchet_key, + ec_public_key *their_base_key, + ec_public_key *their_ratchet_key, + ec_public_key *their_identity_key); +ratchet_identity_key_pair *symmetric_signal_protocol_parameters_get_our_identity_key(const symmetric_signal_protocol_parameters *parameters); +ec_key_pair *symmetric_signal_protocol_parameters_get_our_base_key(const symmetric_signal_protocol_parameters *parameters); +ec_key_pair *symmetric_signal_protocol_parameters_get_our_ratchet_key(const symmetric_signal_protocol_parameters *parameters); +ec_public_key *symmetric_signal_protocol_parameters_get_their_base_key(const symmetric_signal_protocol_parameters *parameters); +ec_public_key *symmetric_signal_protocol_parameters_get_their_ratchet_key(const symmetric_signal_protocol_parameters *parameters); +ec_public_key *symmetric_signal_protocol_parameters_get_their_identity_key(const symmetric_signal_protocol_parameters *parameters); +void symmetric_signal_protocol_parameters_destroy(signal_type_base *type); + +int alice_signal_protocol_parameters_create( + alice_signal_protocol_parameters **parameters, + ratchet_identity_key_pair *our_identity_key, + ec_key_pair *our_base_key, + ec_public_key *their_identity_key, + ec_public_key *their_signed_pre_key, + ec_public_key *their_one_time_pre_key, + ec_public_key *their_ratchet_key); +void alice_signal_protocol_parameters_destroy(signal_type_base *type); + +int bob_signal_protocol_parameters_create( + bob_signal_protocol_parameters **parameters, + ratchet_identity_key_pair *our_identity_key, + ec_key_pair *our_signed_pre_key, + ec_key_pair *our_one_time_pre_key, + ec_key_pair *our_ratchet_key, + ec_public_key *their_identity_key, + ec_public_key *their_base_key); +void bob_signal_protocol_parameters_destroy(signal_type_base *type); + +int ratcheting_session_symmetric_initialize(session_state *state, symmetric_signal_protocol_parameters *parameters, signal_context *global_context); +int ratcheting_session_alice_initialize(session_state *state, alice_signal_protocol_parameters *parameters, signal_context *global_context); +int ratcheting_session_bob_initialize(session_state *state, bob_signal_protocol_parameters *parameters, signal_context *global_context); + +#ifdef __cplusplus +} +#endif + +#endif /* RATCHET_H */ diff --git a/Sources/libsignal/includes/sender_key_record.h b/Sources/libsignal/includes/sender_key_record.h new file mode 100755 index 0000000..f1113ce --- /dev/null +++ b/Sources/libsignal/includes/sender_key_record.h @@ -0,0 +1,33 @@ +#ifndef SENDER_KEY_RECORD_H +#define SENDER_KEY_RECORD_H + +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +int sender_key_record_create(sender_key_record **record, + signal_context *global_context); +int sender_key_record_serialize(signal_buffer **buffer, sender_key_record *record); +int sender_key_record_deserialize(sender_key_record **record, const uint8_t *data, size_t len, signal_context *global_context); +int sender_key_record_copy(sender_key_record **record, sender_key_record *other_state, signal_context *global_context); + +int sender_key_record_is_empty(sender_key_record *record); +int sender_key_record_get_sender_key_state(sender_key_record *record, sender_key_state **state); +int sender_key_record_get_sender_key_state_by_id(sender_key_record *record, sender_key_state **state, uint32_t key_id); +int sender_key_record_add_sender_key_state(sender_key_record *record, + uint32_t id, uint32_t iteration, signal_buffer *chain_key, ec_public_key *signature_key); +int sender_key_record_set_sender_key_state(sender_key_record *record, + uint32_t id, uint32_t iteration, signal_buffer *chain_key, ec_key_pair *signature_key_pair); + +signal_buffer *sender_key_record_get_user_record(const sender_key_record *record); +void sender_key_record_set_user_record(sender_key_record *record, signal_buffer *user_record); + +void sender_key_record_destroy(signal_type_base *type); + +#ifdef __cplusplus +} +#endif + +#endif /* SENDER_KEY_RECORD_H */ diff --git a/Sources/libsignal/includes/sender_key_state.h b/Sources/libsignal/includes/sender_key_state.h new file mode 100755 index 0000000..968c7fb --- /dev/null +++ b/Sources/libsignal/includes/sender_key_state.h @@ -0,0 +1,34 @@ +#ifndef SENDER_KEY_STATE_H +#define SENDER_KEY_STATE_H + +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +int sender_key_state_create(sender_key_state **state, + uint32_t id, sender_chain_key *chain_key, + ec_public_key *signature_public_key, ec_private_key *signature_private_key, + signal_context *global_context); +int sender_key_state_serialize(signal_buffer **buffer, sender_key_state *state); +int sender_key_state_deserialize(sender_key_state **state, const uint8_t *data, size_t len, signal_context *global_context); +int sender_key_state_copy(sender_key_state **state, sender_key_state *other_state, signal_context *global_context); + +uint32_t sender_key_state_get_key_id(sender_key_state *state); +sender_chain_key *sender_key_state_get_chain_key(sender_key_state *state); +void sender_key_state_set_chain_key(sender_key_state *state, sender_chain_key *chain_key); +ec_public_key *sender_key_state_get_signing_key_public(sender_key_state *state); +ec_private_key *sender_key_state_get_signing_key_private(sender_key_state *state); +int sender_key_state_has_sender_message_key(sender_key_state *state, uint32_t iteration); +int sender_key_state_add_sender_message_key(sender_key_state *state, sender_message_key *message_key); +sender_message_key *sender_key_state_remove_sender_message_key(sender_key_state *state, uint32_t iteration); + +void sender_key_state_destroy(signal_type_base *type); + +#ifdef __cplusplus +} +#endif + +#endif /* SENDER_KEY_STATE_H */ diff --git a/Sources/libsignal/includes/session_builder.h b/Sources/libsignal/includes/session_builder.h new file mode 100755 index 0000000..6e56ba2 --- /dev/null +++ b/Sources/libsignal/includes/session_builder.h @@ -0,0 +1,60 @@ +#ifndef SESSION_BUILDER_H +#define SESSION_BUILDER_H + +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Session builder is responsible for setting up encrypted sessions. + * Once a session has been established, session_cipher + * can be used to encrypt/decrypt messages in that session. + * + * Sessions are built from one these different possible vectors: + * - A session_pre_key_bundle retrieved from a server + * - A pre_key_signal_message received from a client + * + * Sessions are constructed per Signal Protocol address + * (recipient name + device ID tuple). Remote logical users are identified by + * their recipient name, and each logical recipient can have multiple + * physical devices. + */ + +/** + * Constructs a session builder. + * + * The store and global contexts must remain valid for the lifetime of the + * session builder. + * + * When finished, free the returned instance by calling session_builder_free(). + * + * @param builder set to a freshly allocated session builder instance + * @param store the signal_protocol_store_context to store all state information in + * @param remote_address the address of the remote user to build a session with + * @param global_context the global library context + * @return 0 on success, or negative on failure + */ +int session_builder_create(session_builder **builder, + signal_protocol_store_context *store, const signal_protocol_address *remote_address, + signal_context *global_context); + +/** + * Build a new session from a session_pre_key_bundle retrieved from a server. + * + * @param bundle A pre key bundle for the destination recipient, retrieved from a server. + * @retval SG_SUCCESS Success + * @retval SG_ERR_INVALID_KEY when the session_pre_key_bundle is badly formatted. + * @retval SG_ERR_UNTRUSTED_IDENTITY when the sender's identity key is not trusted. + */ +int session_builder_process_pre_key_bundle(session_builder *builder, session_pre_key_bundle *bundle); + +void session_builder_free(session_builder *builder); + +#ifdef __cplusplus +} +#endif + +#endif /* SESSION_BUILDER_H */ diff --git a/Sources/libsignal/includes/session_cipher.h b/Sources/libsignal/includes/session_cipher.h new file mode 100755 index 0000000..641dfea --- /dev/null +++ b/Sources/libsignal/includes/session_cipher.h @@ -0,0 +1,155 @@ +#ifndef SESSION_CIPHER_H +#define SESSION_CIPHER_H + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * The main entry point for Signal Protocol encrypt/decrypt operations. + * + * Once a session has been established with session_builder, + * this class can be used for all encrypt/decrypt operations within + * that session. + */ + +/** + * Construct a session cipher for encrypt/decrypt operations on a session. + * In order to use session_cipher, a session must have already been created + * and stored using session_builder. + * + * The store and global contexts must remain valid for the lifetime of the + * session cipher. + * + * When finished, free the returned instance by calling session_cipher_free(). + * + * @param cipher set to a freshly allocated session cipher instance + * @param store the signal_protocol_store_context to store all state information in + * @param remote_address the remote address that messages will be encrypted to or decrypted from. + * @param global_context the global library context + * @return 0 on success, or negative on failure + */ +int session_cipher_create(session_cipher **cipher, + signal_protocol_store_context *store, const signal_protocol_address *remote_address, + signal_context *global_context); + +/** + * Set the optional user data pointer for the session cipher. + * + * This is to give callback functions a way of accessing app specific + * context information for this cipher. + */ +void session_cipher_set_user_data(session_cipher *cipher, void *user_data); + +/** + * Get the optional user data pointer for the session cipher. + * + * This is to give callback functions a way of accessing app specific + * context information for this cipher. + */ +void *session_cipher_get_user_data(session_cipher *cipher); + +/** + * Set the callback function that is called during the decrypt process. + * + * The callback function is called from within + * session_cipher_decrypt_pre_key_signal_message() and + * session_cipher_decrypt_signal_message() after decryption is complete + * but before the updated session state has been committed to the session + * store. If the callback function returns a negative value, then the + * decrypt function will immediately fail with an error. + * + * This a callback allows some implementations to store the committed plaintext + * to their local message store first, in case they are concerned with a crash + * or write error happening between the time the session state is updated but + * before they're able to successfully store the plaintext to disk. + * + * @param callback the callback function to set + */ +void session_cipher_set_decryption_callback(session_cipher *cipher, + int (*callback)(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context)); + +/** + * Encrypt a message. + * + * @param padded_message The plaintext message bytes, optionally padded to a constant multiple. + * @param padded_message_len The length of the data pointed to by padded_message + * @param encrypted_message Set to a ciphertext message encrypted to the recipient+device tuple. + * + * @return SG_SUCCESS on success, negative on error + */ +int session_cipher_encrypt(session_cipher *cipher, + const uint8_t *padded_message, size_t padded_message_len, + ciphertext_message **encrypted_message); + +/** + * Decrypt a message. + * + * @param ciphertext The pre_key_signal_message to decrypt. + * @param decrypt_context Optional context pointer associated with the + * ciphertext, which is passed to the decryption callback function + * @param plaintext Set to a newly allocated buffer containing the plaintext. + * + * @retval SG_SUCCESS Success + * @retval SG_ERR_INVALID_MESSAGE if the input is not valid ciphertext. + * @retval SG_ERR_DUPLICATE_MESSAGE if the input is a message that has already been received. + * @retval SG_ERR_LEGACY_MESSAGE if the input is a message formatted by a protocol version that + * is no longer supported. + * @retval SG_ERR_INVALID_KEY_ID when there is no local pre_key_record + * that corresponds to the pre key ID in the message. + * @retval SG_ERR_INVALID_KEY when the message is formatted incorrectly. + * @retval SG_ERR_UNTRUSTED_IDENTITY when the identity key of the sender is untrusted. + */ +int session_cipher_decrypt_pre_key_signal_message(session_cipher *cipher, + pre_key_signal_message *ciphertext, void *decrypt_context, + signal_buffer **plaintext); + +/** + * Decrypt a message. + * + * @param ciphertext The signal_message to decrypt. + * @param decrypt_context Optional context pointer associated with the + * ciphertext, which is passed to the decryption callback function + * @param plaintext Set to a newly allocated buffer containing the plaintext. + * + * @retval SG_SUCCESS Success + * @retval SG_ERR_INVALID_MESSAGE if the input is not valid ciphertext. + * @retval SG_ERR_DUPLICATE_MESSAGE if the input is a message that has already been received. + * @retval SG_ERR_LEGACY_MESSAGE if the input is a message formatted by a protocol version that + * is no longer supported. + * @retval SG_ERR_NO_SESSION if there is no established session for this contact. + */ +int session_cipher_decrypt_signal_message(session_cipher *cipher, + signal_message *ciphertext, void *decrypt_context, + signal_buffer **plaintext); + +/** + * Gets the remote registration ID for this session cipher. + * + * @param remote_id Set to the value of the remote registration ID + * + * @return SG_SUCCESS on success, negative on error + */ +int session_cipher_get_remote_registration_id(session_cipher *cipher, uint32_t *remote_id); + +/** + * Gets the version of the session associated with this session cipher. + * + * @param version Set to the value of the session version + * + * @retval SG_SUCCESS Success + * @retval SG_ERR_NO_SESSION if no session could be found + */ +int session_cipher_get_session_version(session_cipher *cipher, uint32_t *version); + +void session_cipher_free(session_cipher *cipher); + +#ifdef __cplusplus +} +#endif + +#endif /* SESSION_CIPHER_H */ diff --git a/Sources/libsignal/includes/session_pre_key.h b/Sources/libsignal/includes/session_pre_key.h new file mode 100755 index 0000000..ff8a9a8 --- /dev/null +++ b/Sources/libsignal/includes/session_pre_key.h @@ -0,0 +1,65 @@ +#ifndef SESSION_PRE_KEY_H +#define SESSION_PRE_KEY_H + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define PRE_KEY_MEDIUM_MAX_VALUE 0xFFFFFF + +/*------------------------------------------------------------------------*/ + +int session_pre_key_create(session_pre_key **pre_key, uint32_t id, ec_key_pair *key_pair); +int session_pre_key_serialize(signal_buffer **buffer, const session_pre_key *pre_key); +int session_pre_key_deserialize(session_pre_key **pre_key, const uint8_t *data, size_t len, signal_context *global_context); + +uint32_t session_pre_key_get_id(const session_pre_key *pre_key); +ec_key_pair *session_pre_key_get_key_pair(const session_pre_key *pre_key); + +void session_pre_key_destroy(signal_type_base *type); + +/*------------------------------------------------------------------------*/ + +int session_signed_pre_key_create(session_signed_pre_key **pre_key, + uint32_t id, uint64_t timestamp, ec_key_pair *key_pair, + const uint8_t *signature, size_t signature_len); +int session_signed_pre_key_serialize(signal_buffer **buffer, const session_signed_pre_key *pre_key); +int session_signed_pre_key_deserialize(session_signed_pre_key **pre_key, const uint8_t *data, size_t len, signal_context *global_context); + +uint32_t session_signed_pre_key_get_id(const session_signed_pre_key *pre_key); +uint64_t session_signed_pre_key_get_timestamp(const session_signed_pre_key *pre_key); +ec_key_pair *session_signed_pre_key_get_key_pair(const session_signed_pre_key *pre_key); +const uint8_t *session_signed_pre_key_get_signature(const session_signed_pre_key *pre_key); +size_t session_signed_pre_key_get_signature_len(const session_signed_pre_key *pre_key); + +void session_signed_pre_key_destroy(signal_type_base *type); + +/*------------------------------------------------------------------------*/ + +int session_pre_key_bundle_create(session_pre_key_bundle **bundle, + uint32_t registration_id, int device_id, uint32_t pre_key_id, + ec_public_key *pre_key_public, + uint32_t signed_pre_key_id, ec_public_key *signed_pre_key_public, + const uint8_t *signed_pre_key_signature_data, size_t signed_pre_key_signature_len, + ec_public_key *identity_key); + +uint32_t session_pre_key_bundle_get_registration_id(const session_pre_key_bundle *bundle); +int session_pre_key_bundle_get_device_id(const session_pre_key_bundle *bundle); +uint32_t session_pre_key_bundle_get_pre_key_id(const session_pre_key_bundle *bundle); +ec_public_key *session_pre_key_bundle_get_pre_key(const session_pre_key_bundle *bundle); +uint32_t session_pre_key_bundle_get_signed_pre_key_id(const session_pre_key_bundle *bundle); +ec_public_key *session_pre_key_bundle_get_signed_pre_key(const session_pre_key_bundle *bundle); +signal_buffer *session_pre_key_bundle_get_signed_pre_key_signature(const session_pre_key_bundle *bundle); +ec_public_key *session_pre_key_bundle_get_identity_key(const session_pre_key_bundle *bundle); + +void session_pre_key_bundle_destroy(signal_type_base *type); + +#ifdef __cplusplus +} +#endif + +#endif /* SESSION_PRE_KEY_H */ diff --git a/Sources/libsignal/includes/session_record.h b/Sources/libsignal/includes/session_record.h new file mode 100755 index 0000000..ec21d08 --- /dev/null +++ b/Sources/libsignal/includes/session_record.h @@ -0,0 +1,53 @@ +#ifndef SESSION_RECORD_H +#define SESSION_RECORD_H + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +int session_record_create(session_record **record, session_state *state, signal_context *global_context); +int session_record_serialize(signal_buffer **buffer, const session_record *record); +int session_record_deserialize(session_record **record, const uint8_t *data, size_t len, signal_context *global_context); +int session_record_copy(session_record **record, session_record *other_record, signal_context *global_context); + +int session_record_has_session_state(session_record *record, uint32_t version, const ec_public_key *alice_base_key); +session_state *session_record_get_state(session_record *record); +void session_record_set_state(session_record *record, session_state *state); + +session_record_state_node *session_record_get_previous_states_head(const session_record *record); +session_state *session_record_get_previous_states_element(const session_record_state_node *node); +session_record_state_node *session_record_get_previous_states_next(const session_record_state_node *node); + +/** + * Removes the specified node in the previous states list. + * @param node the node to remove + * @return the node immediately following the removed node, or null if at the end of the list + */ +session_record_state_node *session_record_get_previous_states_remove(session_record *record, session_record_state_node *node); + +int session_record_is_fresh(session_record *record); + +/** + * Move the current session_state into the list of "previous" session states, + * and replace the current session_state with a fresh reset instance. + * + * @return 0 on success, negative on failure + */ +int session_record_archive_current_state(session_record *record); + +int session_record_promote_state(session_record *record, session_state *promoted_state); + +signal_buffer *session_record_get_user_record(const session_record *record); +void session_record_set_user_record(session_record *record, signal_buffer *user_record); + +void session_record_destroy(signal_type_base *type); + +#ifdef __cplusplus +} +#endif + +#endif /* SESSION_RECORD_H */ diff --git a/Sources/libsignal/includes/signal_protocol.h b/Sources/libsignal/includes/signal_protocol.h new file mode 100755 index 0000000..4e71355 --- /dev/null +++ b/Sources/libsignal/includes/signal_protocol.h @@ -0,0 +1,822 @@ +#ifndef SIGNAL_PROTOCOL_H +#define SIGNAL_PROTOCOL_H + +#include +#include +#include + +#include "ratchet.h" +#include "curve.h" +#include "session_record.h" +#include "session_pre_key.h" +#include "sender_key_record.h" +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define SG_SUCCESS 0 + +/* Standard error codes with values that match errno.h equivalents */ +#define SG_ERR_NOMEM -12 /* Not enough space */ +#define SG_ERR_INVAL -22 /* Invalid argument */ + +/* Custom error codes for error conditions specific to the library */ +#define SG_ERR_UNKNOWN -1000 +#define SG_ERR_DUPLICATE_MESSAGE -1001 +#define SG_ERR_INVALID_KEY -1002 +#define SG_ERR_INVALID_KEY_ID -1003 +#define SG_ERR_INVALID_MAC -1004 +#define SG_ERR_INVALID_MESSAGE -1005 +#define SG_ERR_INVALID_VERSION -1006 +#define SG_ERR_LEGACY_MESSAGE -1007 +#define SG_ERR_NO_SESSION -1008 +#define SG_ERR_STALE_KEY_EXCHANGE -1009 +#define SG_ERR_UNTRUSTED_IDENTITY -1010 +#define SG_ERR_VRF_SIG_VERIF_FAILED -1011 +#define SG_ERR_INVALID_PROTO_BUF -1100 +#define SG_ERR_FP_VERSION_MISMATCH -1200 +#define SG_ERR_FP_IDENT_MISMATCH -1201 + +/* + * Minimum negative error code value that this library may use. + * When implementing library callback functions, using values + * less than this constant will ensure that application-specific + * errors can be distinguished from library errors. + */ +#define SG_ERR_MINIMUM -9999 + +/* Log levels */ +#define SG_LOG_ERROR 0 +#define SG_LOG_WARNING 1 +#define SG_LOG_NOTICE 2 +#define SG_LOG_INFO 3 +#define SG_LOG_DEBUG 4 + +/* Mode settings for the crypto callbacks */ +#define SG_CIPHER_AES_CTR_NOPADDING 1 +#define SG_CIPHER_AES_CBC_PKCS5 2 + +void signal_type_ref(signal_type_base *instance); +void signal_type_unref(signal_type_base *instance); + +#ifdef DEBUG_REFCOUNT +int signal_type_ref_count(signal_type_base *instance); +#define SIGNAL_REF(instance) do { \ + signal_type_ref((signal_type_base *)instance); \ + fprintf(stderr, "REF: " #instance " = %d\n", signal_type_ref_count((signal_type_base *)instance)); \ + } while (0) +#define SIGNAL_UNREF(instance) do { \ + fprintf(stderr, "UNREF: " #instance " = %d\n", signal_type_ref_count((signal_type_base *)instance)); \ + signal_type_unref((signal_type_base *)instance); \ + instance = 0; \ + } while(0) +#else +#define SIGNAL_REF(instance) signal_type_ref((signal_type_base *)instance) +#define SIGNAL_UNREF(instance) do { signal_type_unref((signal_type_base *)instance); instance = 0; } while(0) +#endif + +/** + * Allocate a new buffer to store data of the provided length. + * + * @param len length of the buffer to allocate + * @return pointer to the allocated buffer, or 0 on failure + */ +signal_buffer *signal_buffer_alloc(size_t len); + +/** + * Create a new buffer and copy the provided data into it. + * + * @param data pointer to the start of the data + * @param len length of the data + * @return pointer to the allocated buffer, or 0 on failure + */ +signal_buffer *signal_buffer_create(const uint8_t *data, size_t len); + +/** + * Create a copy of an existing buffer. + * + * @param buffer the existing buffer to copy + * @return pointer to the updated buffer, or 0 on failure + */ +signal_buffer *signal_buffer_copy(const signal_buffer *buffer); + +/** + * Create a copy of an existing buffer. + * + * @param buffer the existing buffer to copy + * @param n the maximum number of bytes to copy + * @return pointer to the updated buffer, or 0 on failure + */ +signal_buffer *signal_buffer_n_copy(const signal_buffer *buffer, size_t n); + +/** + * Append the provided data to an existing buffer. + * Note: The underlying buffer is only expanded by an amount sufficient + * to hold the data being appended. There is no additional reserved space + * to reduce the need for memory allocations. + * + * @param buffer the existing buffer to append to + * @param data pointer to the start of the data + * @param len length of the data + * @return pointer to the updated buffer, or 0 on failure + */ +signal_buffer *signal_buffer_append(signal_buffer *buffer, const uint8_t *data, size_t len); + +/** + * Gets the data pointer for the buffer. + * This can be used to read and write data stored in the buffer. + * + * @param buffer pointer to the buffer instance + * @return data pointer + */ +uint8_t *signal_buffer_data(signal_buffer *buffer); + +/** + * Gets the data pointer for the buffer. + * This can be used to read and write data stored in the buffer. + * + * @param buffer pointer to the buffer instance + * @return data pointer + */ +const uint8_t *signal_buffer_const_data(const signal_buffer *buffer); + +/** + * Gets the length of the data stored within the buffer. + * + * @param buffer pointer to the buffer instance + * @return data length + */ +size_t signal_buffer_len(const signal_buffer *buffer); + +/** + * Compare two buffers. + * + * @param buffer1 first buffer to compare + * @param buffer2 second buffer to compare + * @return 0 if the two buffers are equal, negative or positive otherwise + */ +int signal_buffer_compare(signal_buffer *buffer1, signal_buffer *buffer2); + +/** + * Free the data buffer. + * + * @param buffer pointer to the buffer instance to free + */ +void signal_buffer_free(signal_buffer *buffer); + +/** + * Zero and free the data buffer. + * This function should be used when the buffer contains sensitive + * data, to make sure the memory is cleared before being freed. + * + * @param buffer pointer to the buffer instance to free + */ +void signal_buffer_bzero_free(signal_buffer *buffer); + +/** + * Allocate a new buffer list. + * + * @return pointer to the allocated buffer, or 0 on failure + */ +signal_buffer_list *signal_buffer_list_alloc(void); + +/** + * Create a copy of an existing buffer list. + * + * @param list the existing buffer list to copy + * @return pointer to the updated buffer, or 0 on failure + */ +signal_buffer_list *signal_buffer_list_copy(const signal_buffer_list *list); + +/** + * Push the provided buffer onto the end of the list. + * The list will take ownership of the buffer, and free it when the list is + * freed. + * + * @param list the buffer list + * @param buffer the buffer to push + * @return 0 on success, or negative on failure + */ +int signal_buffer_list_push_back(signal_buffer_list *list, signal_buffer *buffer); + +/** + * Gets the size of the buffer list. + * + * @param list the buffer list + * @return the size of the list + */ +unsigned int signal_buffer_list_size(signal_buffer_list *list); + +/** + * Gets the value of the element at a particular index in the list + * + * @param list the list + * @param index the index within the list + * @return the value + */ +signal_buffer *signal_buffer_list_at(signal_buffer_list *list, unsigned int index); + +/** + * Free the buffer list, including all the buffers added to it. + * + * @param list the buffer list + */ +void signal_buffer_list_free(signal_buffer_list *list); + +/** + * Free the buffer list, including all the buffers added to it. + * This function should be used when the buffer list contains sensitive + * data, to make sure the memory is cleared before being freed. + * + * @param list the buffer list + */ +void signal_buffer_list_bzero_free(signal_buffer_list *list); + +/** + * Allocate a new int list + * + * @return pointer to the allocated buffer, or 0 on failure + */ +signal_int_list *signal_int_list_alloc(void); + +/** + * Push a new value onto the end of the list + * + * @param list the list + * @param value the value to push + * @return 0 on success, or negative on failure + */ +int signal_int_list_push_back(signal_int_list *list, int value); + +/** + * Gets the size of the list. + * + * @param list the list + * @return the size of the list + */ +unsigned int signal_int_list_size(signal_int_list *list); + +/** + * Gets the value of the element at a particular index in the list + * + * @param list the list + * @param index the index within the list + * @return the value + */ +int signal_int_list_at(signal_int_list *list, unsigned int index); + +/** + * Free the int list + * @param list the list to free + */ +void signal_int_list_free(signal_int_list *list); + +typedef struct signal_crypto_provider { + /** + * Callback for a secure random number generator. + * This function shall fill the provided buffer with random bytes. + * + * @param data pointer to the output buffer + * @param len size of the output buffer + * @return 0 on success, negative on failure + */ + int (*random_func)(uint8_t *data, size_t len, void *user_data); + + /** + * Callback for an HMAC-SHA256 implementation. + * This function shall initialize an HMAC context with the provided key. + * + * @param hmac_context private HMAC context pointer + * @param key pointer to the key + * @param key_len length of the key + * @return 0 on success, negative on failure + */ + int (*hmac_sha256_init_func)(void **hmac_context, const uint8_t *key, size_t key_len, void *user_data); + + /** + * Callback for an HMAC-SHA256 implementation. + * This function shall update the HMAC context with the provided data + * + * @param hmac_context private HMAC context pointer + * @param data pointer to the data + * @param data_len length of the data + * @return 0 on success, negative on failure + */ + int (*hmac_sha256_update_func)(void *hmac_context, const uint8_t *data, size_t data_len, void *user_data); + + /** + * Callback for an HMAC-SHA256 implementation. + * This function shall finalize an HMAC calculation and populate the output + * buffer with the result. + * + * @param hmac_context private HMAC context pointer + * @param output buffer to be allocated and populated with the result + * @return 0 on success, negative on failure + */ + int (*hmac_sha256_final_func)(void *hmac_context, signal_buffer **output, void *user_data); + + /** + * Callback for an HMAC-SHA256 implementation. + * This function shall free the private context allocated in + * hmac_sha256_init_func. + * + * @param hmac_context private HMAC context pointer + */ + void (*hmac_sha256_cleanup_func)(void *hmac_context, void *user_data); + + /** + * Callback for a SHA512 message digest implementation. + * This function shall initialize a digest context. + * + * @param digest_context private digest context pointer + * @return 0 on success, negative on failure + */ + int (*sha512_digest_init_func)(void **digest_context, void *user_data); + + /** + * Callback for a SHA512 message digest implementation. + * This function shall update the digest context with the provided data. + * + * @param digest_context private digest context pointer + * @param data pointer to the data + * @param data_len length of the data + * @return 0 on success, negative on failure + */ + int (*sha512_digest_update_func)(void *digest_context, const uint8_t *data, size_t data_len, void *user_data); + + /** + * Callback for a SHA512 message digest implementation. + * This function shall finalize the digest calculation, populate the + * output buffer with the result, and prepare the context for reuse. + * + * @param digest_context private digest context pointer + * @param output buffer to be allocated and populated with the result + * @return 0 on success, negative on failure + */ + int (*sha512_digest_final_func)(void *digest_context, signal_buffer **output, void *user_data); + + /** + * Callback for a SHA512 message digest implementation. + * This function shall free the private context allocated in + * sha512_digest_init_func. + * + * @param digest_context private digest context pointer + */ + void (*sha512_digest_cleanup_func)(void *digest_context, void *user_data); + + /** + * Callback for an AES encryption implementation. + * + * @param output buffer to be allocated and populated with the ciphertext + * @param cipher specific cipher variant to use, either SG_CIPHER_AES_CTR_NOPADDING or SG_CIPHER_AES_CBC_PKCS5 + * @param key the encryption key + * @param key_len length of the encryption key + * @param iv the initialization vector + * @param iv_len length of the initialization vector + * @param plaintext the plaintext to encrypt + * @param plaintext_len length of the plaintext + * @return 0 on success, negative on failure + */ + int (*encrypt_func)(signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *plaintext, size_t plaintext_len, + void *user_data); + + /** + * Callback for an AES decryption implementation. + * + * @param output buffer to be allocated and populated with the plaintext + * @param cipher specific cipher variant to use, either SG_CIPHER_AES_CTR_NOPADDING or SG_CIPHER_AES_CBC_PKCS5 + * @param key the encryption key + * @param key_len length of the encryption key + * @param iv the initialization vector + * @param iv_len length of the initialization vector + * @param ciphertext the ciphertext to decrypt + * @param ciphertext_len length of the ciphertext + * @return 0 on success, negative on failure + */ + int (*decrypt_func)(signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *ciphertext, size_t ciphertext_len, + void *user_data); + + /** User data pointer */ + void *user_data; +} signal_crypto_provider; + +typedef struct signal_protocol_session_store { + /** + * Returns a copy of the serialized session record corresponding to the + * provided recipient ID + device ID tuple. + * + * @param record pointer to a freshly allocated buffer containing the + * serialized session record. Unset if no record was found. + * The Signal Protocol library is responsible for freeing this buffer. + * @param user_record pointer to a freshly allocated buffer containing + * application specific data stored alongside the serialized session + * record. If no such data exists, then this pointer may be left unset. + * The Signal Protocol library is responsible for freeing this buffer. + * @param address the address of the remote client + * @return 1 if the session was loaded, 0 if the session was not found, negative on failure + */ + int (*load_session_func)(signal_buffer **record, signal_buffer **user_record, const signal_protocol_address *address, void *user_data); + + /** + * Returns all known devices with active sessions for a recipient + * + * @param pointer to an array that will be allocated and populated with the result + * @param name the name of the remote client + * @param name_len the length of the name + * @return size of the sessions array, or negative on failure + */ + int (*get_sub_device_sessions_func)(signal_int_list **sessions, const char *name, size_t name_len, void *user_data); + + /** + * Commit to storage the session record for a given + * recipient ID + device ID tuple. + * + * @param address the address of the remote client + * @param record pointer to a buffer containing the serialized session + * record for the remote client + * @param record_len length of the serialized session record + * @param user_record pointer to a buffer containing application specific + * data to be stored alongside the serialized session record for the + * remote client. If no such data exists, then this pointer will be null. + * @param user_record_len length of the application specific data + * @return 0 on success, negative on failure + */ + int (*store_session_func)(const signal_protocol_address *address, uint8_t *record, size_t record_len, uint8_t *user_record, size_t user_record_len, void *user_data); + + /** + * Determine whether there is a committed session record for a + * recipient ID + device ID tuple. + * + * @param address the address of the remote client + * @return 1 if a session record exists, 0 otherwise. + */ + int (*contains_session_func)(const signal_protocol_address *address, void *user_data); + + /** + * Remove a session record for a recipient ID + device ID tuple. + * + * @param address the address of the remote client + * @return 1 if a session was deleted, 0 if a session was not deleted, negative on error + */ + int (*delete_session_func)(const signal_protocol_address *address, void *user_data); + + /** + * Remove the session records corresponding to all devices of a recipient ID. + * + * @param name the name of the remote client + * @param name_len the length of the name + * @return the number of deleted sessions on success, negative on failure + */ + int (*delete_all_sessions_func)(const char *name, size_t name_len, void *user_data); + + /** + * Function called to perform cleanup when the data store context is being + * destroyed. + */ + void (*destroy_func)(void *user_data); + + /** User data pointer */ + void *user_data; +} signal_protocol_session_store; + +typedef struct signal_protocol_pre_key_store { + /** + * Load a local serialized PreKey record. + * + * @param record pointer to a newly allocated buffer containing the record, + * if found. Unset if no record was found. + * The Signal Protocol library is responsible for freeing this buffer. + * @param pre_key_id the ID of the local serialized PreKey record + * @retval SG_SUCCESS if the key was found + * @retval SG_ERR_INVALID_KEY_ID if the key could not be found + */ + int (*load_pre_key)(signal_buffer **record, uint32_t pre_key_id, void *user_data); + + /** + * Store a local serialized PreKey record. + * + * @param pre_key_id the ID of the PreKey record to store. + * @param record pointer to a buffer containing the serialized record + * @param record_len length of the serialized record + * @return 0 on success, negative on failure + */ + int (*store_pre_key)(uint32_t pre_key_id, uint8_t *record, size_t record_len, void *user_data); + + /** + * Determine whether there is a committed PreKey record matching the + * provided ID. + * + * @param pre_key_id A PreKey record ID. + * @return 1 if the store has a record for the PreKey ID, 0 otherwise + */ + int (*contains_pre_key)(uint32_t pre_key_id, void *user_data); + + /** + * Delete a PreKey record from local storage. + * + * @param pre_key_id The ID of the PreKey record to remove. + * @return 0 on success, negative on failure + */ + int (*remove_pre_key)(uint32_t pre_key_id, void *user_data); + + /** + * Function called to perform cleanup when the data store context is being + * destroyed. + */ + void (*destroy_func)(void *user_data); + + /** User data pointer */ + void *user_data; +} signal_protocol_pre_key_store; + +typedef struct signal_protocol_signed_pre_key_store { + /** + * Load a local serialized signed PreKey record. + * + * @param record pointer to a newly allocated buffer containing the record, + * if found. Unset if no record was found. + * The Signal Protocol library is responsible for freeing this buffer. + * @param signed_pre_key_id the ID of the local signed PreKey record + * @retval SG_SUCCESS if the key was found + * @retval SG_ERR_INVALID_KEY_ID if the key could not be found + */ + int (*load_signed_pre_key)(signal_buffer **record, uint32_t signed_pre_key_id, void *user_data); + + /** + * Store a local serialized signed PreKey record. + * + * @param signed_pre_key_id the ID of the signed PreKey record to store + * @param record pointer to a buffer containing the serialized record + * @param record_len length of the serialized record + * @return 0 on success, negative on failure + */ + int (*store_signed_pre_key)(uint32_t signed_pre_key_id, uint8_t *record, size_t record_len, void *user_data); + + /** + * Determine whether there is a committed signed PreKey record matching + * the provided ID. + * + * @param signed_pre_key_id A signed PreKey record ID. + * @return 1 if the store has a record for the signed PreKey ID, 0 otherwise + */ + int (*contains_signed_pre_key)(uint32_t signed_pre_key_id, void *user_data); + + /** + * Delete a SignedPreKeyRecord from local storage. + * + * @param signed_pre_key_id The ID of the signed PreKey record to remove. + * @return 0 on success, negative on failure + */ + int (*remove_signed_pre_key)(uint32_t signed_pre_key_id, void *user_data); + + /** + * Function called to perform cleanup when the data store context is being + * destroyed. + */ + void (*destroy_func)(void *user_data); + + /** User data pointer */ + void *user_data; +} signal_protocol_signed_pre_key_store; + +typedef struct signal_protocol_identity_key_store { + /** + * Get the local client's identity key pair. + * + * @param public_data pointer to a newly allocated buffer containing the + * public key, if found. Unset if no record was found. + * The Signal Protocol library is responsible for freeing this buffer. + * @param private_data pointer to a newly allocated buffer containing the + * private key, if found. Unset if no record was found. + * The Signal Protocol library is responsible for freeing this buffer. + * @return 0 on success, negative on failure + */ + int (*get_identity_key_pair)(signal_buffer **public_data, signal_buffer **private_data, void *user_data); + + /** + * Return the local client's registration ID. + * + * Clients should maintain a registration ID, a random number + * between 1 and 16380 that's generated once at install time. + * + * @param registration_id pointer to be set to the local client's + * registration ID, if it was successfully retrieved. + * @return 0 on success, negative on failure + */ + int (*get_local_registration_id)(void *user_data, uint32_t *registration_id); + + /** + * Save a remote client's identity key + *

+ * Store a remote client's identity key as trusted. + * The value of key_data may be null. In this case remove the key data + * from the identity store, but retain any metadata that may be kept + * alongside it. + * + * @param address the address of the remote client + * @param key_data Pointer to the remote client's identity key, may be null + * @param key_len Length of the remote client's identity key + * @return 0 on success, negative on failure + */ + int (*save_identity)(const signal_protocol_address *address, uint8_t *key_data, size_t key_len, void *user_data); + + /** + * Verify a remote client's identity key. + * + * Determine whether a remote client's identity is trusted. Convention is + * that the TextSecure protocol is 'trust on first use.' This means that + * an identity key is considered 'trusted' if there is no entry for the recipient + * in the local store, or if it matches the saved key for a recipient in the local + * store. Only if it mismatches an entry in the local store is it considered + * 'untrusted.' + * + * @param address the address of the remote client + * @param identityKey The identity key to verify. + * @param key_data Pointer to the identity key to verify + * @param key_len Length of the identity key to verify + * @return 1 if trusted, 0 if untrusted, negative on failure + */ + int (*is_trusted_identity)(const signal_protocol_address *address, uint8_t *key_data, size_t key_len, void *user_data); + + /** + * Function called to perform cleanup when the data store context is being + * destroyed. + */ + void (*destroy_func)(void *user_data); + + /** User data pointer */ + void *user_data; +} signal_protocol_identity_key_store; + +typedef struct signal_protocol_sender_key_store { + /** + * Store a serialized sender key record for a given + * (groupId + senderId + deviceId) tuple. + * + * @param sender_key_name the (groupId + senderId + deviceId) tuple + * @param record pointer to a buffer containing the serialized record + * @param record_len length of the serialized record + * @param user_record pointer to a buffer containing application specific + * data to be stored alongside the serialized record. If no such + * data exists, then this pointer will be null. + * @param user_record_len length of the application specific data + * @return 0 on success, negative on failure + */ + int (*store_sender_key)(const signal_protocol_sender_key_name *sender_key_name, uint8_t *record, size_t record_len, uint8_t *user_record, size_t user_record_len, void *user_data); + + /** + * Returns a copy of the sender key record corresponding to the + * (groupId + senderId + deviceId) tuple. + * + * @param record pointer to a newly allocated buffer containing the record, + * if found. Unset if no record was found. + * The Signal Protocol library is responsible for freeing this buffer. + * @param user_record pointer to a newly allocated buffer containing + * application-specific data stored alongside the record. If no such + * data exists, then this pointer may be left unset. + * The Signal Protocol library is responsible for freeing this buffer. + * @param sender_key_name the (groupId + senderId + deviceId) tuple + * @return 1 if the record was loaded, 0 if the record was not found, negative on failure + */ + int (*load_sender_key)(signal_buffer **record, signal_buffer **user_record, const signal_protocol_sender_key_name *sender_key_name, void *user_data); + + /** + * Function called to perform cleanup when the data store context is being + * destroyed. + */ + void (*destroy_func)(void *user_data); + + /** User data pointer */ + void *user_data; +} signal_protocol_sender_key_store; + +/** + * Create a new instance of the global library context. + */ +int signal_context_create(signal_context **context, void *user_data); + +/** + * Set the crypto provider to be used by the Signal Protocol library. + * + * @param crypto_provider Populated structure of crypto provider function + * pointers. The contents of this structure are copied, so the caller + * does not need to maintain its instance. + * @return 0 on success, negative on failure + */ +int signal_context_set_crypto_provider(signal_context *context, const signal_crypto_provider *crypto_provider); + +/** + * Set the locking functions to be used by the Signal Protocol library for + * synchronization. + * + * Note: These functions must allow recursive locking (e.g. PTHREAD_MUTEX_RECURSIVE) + * + * @param lock function to lock a mutex + * @param unlock function to unlock a mutex + * @return 0 on success, negative on failure + */ +int signal_context_set_locking_functions(signal_context *context, + void (*lock)(void *user_data), void (*unlock)(void *user_data)); + +/** + * Set the log function to be used by the Signal Protocol library for logging. + * + * @return 0 on success, negative on failure + */ +int signal_context_set_log_function(signal_context *context, + void (*log)(int level, const char *message, size_t len, void *user_data)); + +void signal_context_destroy(signal_context *context); + +/** + * Create a new instance of the Signal Protocol data store interface. + */ +int signal_protocol_store_context_create(signal_protocol_store_context **context, signal_context *global_context); + +int signal_protocol_store_context_set_session_store(signal_protocol_store_context *context, const signal_protocol_session_store *store); +int signal_protocol_store_context_set_pre_key_store(signal_protocol_store_context *context, const signal_protocol_pre_key_store *store); +int signal_protocol_store_context_set_signed_pre_key_store(signal_protocol_store_context *context, const signal_protocol_signed_pre_key_store *store); +int signal_protocol_store_context_set_identity_key_store(signal_protocol_store_context *context, const signal_protocol_identity_key_store *store); +int signal_protocol_store_context_set_sender_key_store(signal_protocol_store_context *context, const signal_protocol_sender_key_store *store); + +void signal_protocol_store_context_destroy(signal_protocol_store_context *context); + +/* + * Interface to the session store. + * These functions will use the callbacks in the provided + * signal_protocol_store_context instance and operate in terms of higher level + * library data structures. + */ + +int signal_protocol_session_load_session(signal_protocol_store_context *context, session_record **record, const signal_protocol_address *address); +int signal_protocol_session_get_sub_device_sessions(signal_protocol_store_context *context, signal_int_list **sessions, const char *name, size_t name_len); +int signal_protocol_session_store_session(signal_protocol_store_context *context, const signal_protocol_address *address, session_record *record); +int signal_protocol_session_contains_session(signal_protocol_store_context *context, const signal_protocol_address *address); +int signal_protocol_session_delete_session(signal_protocol_store_context *context, const signal_protocol_address *address); +int signal_protocol_session_delete_all_sessions(signal_protocol_store_context *context, const char *name, size_t name_len); + + +/* + * Interface to the pre-key store. + * These functions will use the callbacks in the provided + * signal_protocol_store_context instance and operate in terms of higher level + * library data structures. + */ + +int signal_protocol_pre_key_load_key(signal_protocol_store_context *context, session_pre_key **pre_key, uint32_t pre_key_id); +int signal_protocol_pre_key_store_key(signal_protocol_store_context *context, session_pre_key *pre_key); +int signal_protocol_pre_key_contains_key(signal_protocol_store_context *context, uint32_t pre_key_id); +int signal_protocol_pre_key_remove_key(signal_protocol_store_context *context, uint32_t pre_key_id); + + +/* + * Interface to the signed pre-key store. + * These functions will use the callbacks in the provided + * signal_protocol_store_context instance and operate in terms of higher level + * library data structures. + */ + +int signal_protocol_signed_pre_key_load_key(signal_protocol_store_context *context, session_signed_pre_key **pre_key, uint32_t signed_pre_key_id); +int signal_protocol_signed_pre_key_store_key(signal_protocol_store_context *context, session_signed_pre_key *pre_key); +int signal_protocol_signed_pre_key_contains_key(signal_protocol_store_context *context, uint32_t signed_pre_key_id); +int signal_protocol_signed_pre_key_remove_key(signal_protocol_store_context *context, uint32_t signed_pre_key_id); + + +/* + * Interface to the identity key store. + * These functions will use the callbacks in the provided + * signal_protocol_store_context instance and operate in terms of higher level + * library data structures. + */ + +int signal_protocol_identity_get_key_pair(signal_protocol_store_context *context, ratchet_identity_key_pair **key_pair); +int signal_protocol_identity_get_local_registration_id(signal_protocol_store_context *context, uint32_t *registration_id); +int signal_protocol_identity_save_identity(signal_protocol_store_context *context, const signal_protocol_address *address, ec_public_key *identity_key); +int signal_protocol_identity_is_trusted_identity(signal_protocol_store_context *context, const signal_protocol_address *address, ec_public_key *identity_key); + + +/* + * Interface to the sender key store. + * These functions will use the callbacks in the provided + * signal_protocol_store_context instance and operate in terms of higher level + * library data structures. + */ + +int signal_protocol_sender_key_store_key(signal_protocol_store_context *context, const signal_protocol_sender_key_name *sender_key_name, sender_key_record *record); +int signal_protocol_sender_key_load_key(signal_protocol_store_context *context, sender_key_record **record, const signal_protocol_sender_key_name *sender_key_name); + +#ifdef __cplusplus +} +#endif + +#endif /* SIGNAL_PROTOCOL_H */ diff --git a/Sources/libsignal/includes/signal_protocol_types.h b/Sources/libsignal/includes/signal_protocol_types.h new file mode 100755 index 0000000..b45fa4c --- /dev/null +++ b/Sources/libsignal/includes/signal_protocol_types.h @@ -0,0 +1,141 @@ +#ifndef SIGNAL_PROTOCOL_TYPES_H +#define SIGNAL_PROTOCOL_TYPES_H + +#include +#include + +#ifndef _WINDOWS +#include +#else +#include +typedef SSIZE_T ssize_t; +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Base library types + */ +typedef struct signal_type_base signal_type_base; +typedef struct signal_buffer signal_buffer; +typedef struct signal_buffer_list signal_buffer_list; +typedef struct signal_int_list signal_int_list; + +/* + * Global context for the Signal Protocol library + */ +typedef struct signal_context signal_context; + +/* + * Context for the Signal Protocol data store implementation + */ +typedef struct signal_protocol_store_context signal_protocol_store_context; + +/* + * Address of an Signal Protocol message recipient + */ +typedef struct signal_protocol_address { + const char *name; + size_t name_len; + int32_t device_id; +} signal_protocol_address; + +/* + * A representation of a (group + sender + device) tuple + */ +typedef struct signal_protocol_sender_key_name { + const char *group_id; + size_t group_id_len; + signal_protocol_address sender; +} signal_protocol_sender_key_name; + +/* + * Curve key types + */ +typedef struct ec_public_key ec_public_key; +typedef struct ec_private_key ec_private_key; +typedef struct ec_key_pair ec_key_pair; +typedef struct ec_public_key_list ec_public_key_list; + +/* + * HKDF types + */ +typedef struct hkdf_context hkdf_context; + +/* + * Key helper types + */ +typedef struct signal_protocol_key_helper_pre_key_list_node signal_protocol_key_helper_pre_key_list_node; + +/* + * Protocol types + */ +typedef struct ciphertext_message ciphertext_message; +typedef struct signal_message signal_message; +typedef struct pre_key_signal_message pre_key_signal_message; +typedef struct sender_key_message sender_key_message; +typedef struct sender_key_distribution_message sender_key_distribution_message; + +/* + * Ratchet types + */ +#define RATCHET_CIPHER_KEY_LENGTH 32 +#define RATCHET_MAC_KEY_LENGTH 32 +#define RATCHET_IV_LENGTH 16 + +typedef struct ratchet_chain_key ratchet_chain_key; +typedef struct ratchet_root_key ratchet_root_key; +typedef struct ratchet_identity_key_pair ratchet_identity_key_pair; + +typedef struct ratchet_message_keys { + uint8_t cipher_key[RATCHET_CIPHER_KEY_LENGTH]; + uint8_t mac_key[RATCHET_MAC_KEY_LENGTH]; + uint8_t iv[RATCHET_IV_LENGTH]; + uint32_t counter; +} ratchet_message_keys; + +/* + * Session types + */ +typedef struct session_pre_key session_pre_key; +typedef struct session_signed_pre_key session_signed_pre_key; +typedef struct session_pre_key_bundle session_pre_key_bundle; +typedef struct session_builder session_builder; +typedef struct session_record session_record; +typedef struct session_record_state_node session_record_state_node; +typedef struct session_state session_state; +typedef struct session_cipher session_cipher; + +/* + * Group types + */ +typedef struct sender_message_key sender_message_key; +typedef struct sender_chain_key sender_chain_key; +typedef struct sender_key_state sender_key_state; +typedef struct sender_key_record sender_key_record; +typedef struct group_session_builder group_session_builder; +typedef struct group_cipher group_cipher; + +/* + * Fingerprint types + */ +typedef struct fingerprint fingerprint; +typedef struct displayable_fingerprint displayable_fingerprint; +typedef struct scannable_fingerprint scannable_fingerprint; +typedef struct fingerprint_generator fingerprint_generator; + +/* + * Device consistency types + */ +typedef struct device_consistency_signature device_consistency_signature; +typedef struct device_consistency_commitment device_consistency_commitment; +typedef struct device_consistency_message device_consistency_message; +typedef struct device_consistency_signature_list device_consistency_signature_list; + +#ifdef __cplusplus +} +#endif + +#endif /* SIGNAL_PROTOCOL_TYPES_H */ diff --git a/Sources/libsignal/key_helper.c b/Sources/libsignal/key_helper.c new file mode 100755 index 0000000..e2de8d4 --- /dev/null +++ b/Sources/libsignal/key_helper.c @@ -0,0 +1,307 @@ +#include "key_helper.h" + +#include + +#include "session_pre_key.h" +#include "ratchet.h" +#include "curve.h" +#include "signal_protocol_internal.h" +#include "utlist.h" + +struct signal_protocol_key_helper_pre_key_list_node +{ + session_pre_key *element; + struct signal_protocol_key_helper_pre_key_list_node *next; +}; + +int signal_protocol_key_helper_generate_identity_key_pair(ratchet_identity_key_pair **key_pair, signal_context *global_context) +{ + int result = 0; + ratchet_identity_key_pair *result_pair = 0; + ec_key_pair *ec_pair = 0; + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + + assert(global_context); + + result = curve_generate_key_pair(global_context, &ec_pair); + if(result < 0) { + goto complete; + } + + public_key = ec_key_pair_get_public(ec_pair); + private_key = ec_key_pair_get_private(ec_pair); + + result = ratchet_identity_key_pair_create( + &result_pair, public_key, private_key); + +complete: + if(result >= 0) { + *key_pair = result_pair; + } + SIGNAL_UNREF(ec_pair); + return result; +} + +int signal_protocol_key_helper_generate_registration_id(uint32_t *registration_id, int extended_range, signal_context *global_context) +{ + uint32_t range; + uint32_t id_value; + int result = 0; + + assert(global_context); + assert(global_context->crypto_provider.random_func); + + if(extended_range == 0) { + range = 16380; + } + else if(extended_range == 1) { + range = INT32_MAX - 1; + } + else { + return SG_ERR_INVAL; + } + + result = global_context->crypto_provider.random_func( + (uint8_t *)(&id_value), sizeof(id_value), + global_context->crypto_provider.user_data); + if(result < 0) { + return result; + } + + id_value = (id_value % range) + 1; + + *registration_id = id_value; + + return 0; +} + +int signal_protocol_key_helper_get_random_sequence(int *value, int max, signal_context *global_context) +{ + int result = 0; + int32_t result_value; + + assert(global_context); + assert(global_context->crypto_provider.random_func); + + result = global_context->crypto_provider.random_func( + (uint8_t *)(&result_value), sizeof(result_value), + global_context->crypto_provider.user_data); + if(result < 0) { + return result; + } + + result_value = ((result_value & 0x7FFFFFFF) % max); + + *value = result_value; + + return 0; +} + +int signal_protocol_key_helper_generate_pre_keys(signal_protocol_key_helper_pre_key_list_node **head, + unsigned int start, unsigned int count, + signal_context *global_context) +{ + int result = 0; + ec_key_pair *ec_pair = 0; + session_pre_key *pre_key = 0; + signal_protocol_key_helper_pre_key_list_node *result_head = 0; + signal_protocol_key_helper_pre_key_list_node *cur_node = 0; + signal_protocol_key_helper_pre_key_list_node *node = 0; + unsigned int start_index = start - 1; + unsigned int i; + + assert(global_context); + + for(i = 0; i < count; i++) { + uint32_t id = 0; + result = curve_generate_key_pair(global_context, &ec_pair); + if(result < 0) { + goto complete; + } + + id = ((start_index + i) % (PRE_KEY_MEDIUM_MAX_VALUE - 1)) + 1; + + result = session_pre_key_create(&pre_key, id, ec_pair); + if(result < 0) { + goto complete; + } + + SIGNAL_UNREF(ec_pair); + ec_pair = 0; + + node = malloc(sizeof(signal_protocol_key_helper_pre_key_list_node)); + if(!node) { + result = SG_ERR_NOMEM; + goto complete; + } + node->element = pre_key; + node->next = 0; + if(!result_head) { + result_head = node; + cur_node = node; + } + else { + cur_node->next = node; + cur_node = node; + } + pre_key = 0; + node = 0; + } + +complete: + if(ec_pair) { + SIGNAL_UNREF(ec_pair); + } + if(pre_key) { + SIGNAL_UNREF(pre_key); + } + if(node) { + free(node); + } + if(result < 0) { + if(result_head) { + signal_protocol_key_helper_pre_key_list_node *tmp_node; + LL_FOREACH_SAFE(result_head, cur_node, tmp_node) { + LL_DELETE(result_head, cur_node); + SIGNAL_UNREF(cur_node->element); + free(cur_node); + } + } + } + else { + *head = result_head; + } + return result; +} + +session_pre_key *signal_protocol_key_helper_key_list_element(const signal_protocol_key_helper_pre_key_list_node *node) +{ + assert(node); + assert(node->element); + return node->element; +} + +signal_protocol_key_helper_pre_key_list_node *signal_protocol_key_helper_key_list_next(const signal_protocol_key_helper_pre_key_list_node *node) +{ + assert(node); + return node->next; +} + +void signal_protocol_key_helper_key_list_free(signal_protocol_key_helper_pre_key_list_node *head) +{ + if(head) { + signal_protocol_key_helper_pre_key_list_node *cur_node; + signal_protocol_key_helper_pre_key_list_node *tmp_node; + LL_FOREACH_SAFE(head, cur_node, tmp_node) { + LL_DELETE(head, cur_node); + SIGNAL_UNREF(cur_node->element); + free(cur_node); + } + } +} + +int signal_protocol_key_helper_generate_signed_pre_key(session_signed_pre_key **signed_pre_key, + const ratchet_identity_key_pair *identity_key_pair, + uint32_t signed_pre_key_id, + uint64_t timestamp, + signal_context *global_context) +{ + int result = 0; + session_signed_pre_key *result_signed_pre_key = 0; + ec_key_pair *ec_pair = 0; + signal_buffer *public_buf = 0; + signal_buffer *signature_buf = 0; + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + + assert(global_context); + + result = curve_generate_key_pair(global_context, &ec_pair); + if(result < 0) { + goto complete; + } + + public_key = ec_key_pair_get_public(ec_pair); + result = ec_public_key_serialize(&public_buf, public_key); + if(result < 0) { + goto complete; + } + + private_key = ratchet_identity_key_pair_get_private(identity_key_pair); + + result = curve_calculate_signature(global_context, + &signature_buf, + private_key, + signal_buffer_data(public_buf), + signal_buffer_len(public_buf)); + if(result < 0) { + goto complete; + } + + result = session_signed_pre_key_create(&result_signed_pre_key, + signed_pre_key_id, timestamp, ec_pair, + signal_buffer_data(signature_buf), + signal_buffer_len(signature_buf)); + +complete: + SIGNAL_UNREF(ec_pair); + signal_buffer_free(public_buf); + signal_buffer_free(signature_buf); + if(result >= 0) { + *signed_pre_key = result_signed_pre_key; + } + return result; +} + +int signal_protocol_key_helper_generate_sender_signing_key(ec_key_pair **key_pair, signal_context *global_context) +{ + int result; + + assert(global_context); + + result = curve_generate_key_pair(global_context, key_pair); + + return result; +} + +int signal_protocol_key_helper_generate_sender_key(signal_buffer **key_buffer, signal_context *global_context) +{ + int result = 0; + signal_buffer *result_buffer = 0; + + assert(global_context); + + result_buffer = signal_buffer_alloc(32); + if(!result_buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = signal_crypto_random(global_context, + signal_buffer_data(result_buffer), + signal_buffer_len(result_buffer)); + +complete: + if(result < 0) { + signal_buffer_free(result_buffer); + } + else { + *key_buffer = result_buffer; + result = 0; + } + return result; +} + +int signal_protocol_key_helper_generate_sender_key_id(uint32_t *key_id, signal_context *global_context) +{ + int result; + int value; + + result = signal_protocol_key_helper_get_random_sequence(&value, INT32_MAX, global_context); + + if(result >= 0) { + *key_id = (uint32_t)value; + } + return result; +} diff --git a/Sources/libsignal/libsignal-protocol-c.pc.in b/Sources/libsignal/libsignal-protocol-c.pc.in new file mode 100755 index 0000000..af838f7 --- /dev/null +++ b/Sources/libsignal/libsignal-protocol-c.pc.in @@ -0,0 +1,13 @@ +prefix=@CMAKE_INSTALL_PREFIX@ +exec_prefix=@CMAKE_INSTALL_PREFIX@ +libdir=@LIB_INSTALL_DIR@ +sharedlibdir=@LIB_INSTALL_DIR@ +includedir=@INCLUDE_INSTALL_DIR@ + +Name: @PROJECT_NAME@ +Description: Signal Protocol C Library +Version: @SIGNAL_PROTOCOL_C_VERSION@ + +Requires: +Libs: -L${libdir} -L${sharedlibdir} -l@PROJECT_NAME@ +Cflags: -I${includedir}/signal \ No newline at end of file diff --git a/Sources/libsignal/protobuf-c/protobuf-c.c b/Sources/libsignal/protobuf-c/protobuf-c.c new file mode 100755 index 0000000..4f2f5bc --- /dev/null +++ b/Sources/libsignal/protobuf-c/protobuf-c.c @@ -0,0 +1,3490 @@ +/* + * Copyright (c) 2008-2015, Dave Benson and the protobuf-c authors. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/*! \file + * Support library for `protoc-c` generated code. + * + * This file implements the public API used by the code generated + * by `protoc-c`. + * + * \authors Dave Benson and the protobuf-c authors + * + * \copyright 2008-2014. Licensed under the terms of the [BSD-2-Clause] license. + */ + +/** + * \todo 64-BIT OPTIMIZATION: certain implementations use 32-bit math + * even on 64-bit platforms (uint64_size, uint64_pack, parse_uint64). + * + * \todo Use size_t consistently. + */ + +#include /* for malloc, free */ +#include /* for strcmp, strlen, memcpy, memmove, memset */ + +#include "protobuf-c.h" + +#define TRUE 1 +#define FALSE 0 + +#define PROTOBUF_C__ASSERT_NOT_REACHED() assert(0) + +/* Workaround for Microsoft compilers. */ +#ifdef _MSC_VER +# define inline __inline +#endif + +/** + * \defgroup internal Internal functions and macros + * + * These are not exported by the library but are useful to developers working + * on `libprotobuf-c` itself. + */ + +/** + * \defgroup macros Utility macros for manipulating structures + * + * Macros and constants used to manipulate the base "classes" generated by + * `protobuf-c`. They also define limits and check correctness. + * + * \ingroup internal + * @{ + */ + +/** The maximum length of a 64-bit integer in varint encoding. */ +#define MAX_UINT64_ENCODED_SIZE 10 + +#ifndef PROTOBUF_C_UNPACK_ERROR +# define PROTOBUF_C_UNPACK_ERROR(...) +#endif + +/** + * Internal `ProtobufCMessage` manipulation macro. + * + * Base macro for manipulating a `ProtobufCMessage`. Used by STRUCT_MEMBER() and + * STRUCT_MEMBER_PTR(). + */ +#define STRUCT_MEMBER_P(struct_p, struct_offset) \ + ((void *) ((uint8_t *) (struct_p) + (struct_offset))) + +/** + * Return field in a `ProtobufCMessage` based on offset. + * + * Take a pointer to a `ProtobufCMessage` and find the field at the offset. + * Cast it to the passed type. + */ +#define STRUCT_MEMBER(member_type, struct_p, struct_offset) \ + (*(member_type *) STRUCT_MEMBER_P((struct_p), (struct_offset))) + +/** + * Return field in a `ProtobufCMessage` based on offset. + * + * Take a pointer to a `ProtobufCMessage` and find the field at the offset. Cast + * it to a pointer to the passed type. + */ +#define STRUCT_MEMBER_PTR(member_type, struct_p, struct_offset) \ + ((member_type *) STRUCT_MEMBER_P((struct_p), (struct_offset))) + +/* Assertions for magic numbers. */ + +#define ASSERT_IS_ENUM_DESCRIPTOR(desc) \ + assert((desc)->magic == PROTOBUF_C__ENUM_DESCRIPTOR_MAGIC) + +#define ASSERT_IS_MESSAGE_DESCRIPTOR(desc) \ + assert((desc)->magic == PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC) + +#define ASSERT_IS_MESSAGE(message) \ + ASSERT_IS_MESSAGE_DESCRIPTOR((message)->descriptor) + +#define ASSERT_IS_SERVICE_DESCRIPTOR(desc) \ + assert((desc)->magic == PROTOBUF_C__SERVICE_DESCRIPTOR_MAGIC) + +/**@}*/ + +/* --- version --- */ + +const char * +protobuf_c_version(void) +{ + return PROTOBUF_C_VERSION; +} + +uint32_t +protobuf_c_version_number(void) +{ + return PROTOBUF_C_VERSION_NUMBER; +} + +/* --- allocator --- */ + +static void * +system_alloc(void *allocator_data, size_t size) +{ + return malloc(size); +} + +static void +system_free(void *allocator_data, void *data) +{ + free(data); +} + +static inline void * +do_alloc(ProtobufCAllocator *allocator, size_t size) +{ + return allocator->alloc(allocator->allocator_data, size); +} + +static inline void +do_free(ProtobufCAllocator *allocator, void *data) +{ + if (data != NULL) + allocator->free(allocator->allocator_data, data); +} + +/* + * This allocator uses the system's malloc() and free(). It is the default + * allocator used if NULL is passed as the ProtobufCAllocator to an exported + * function. + */ +static ProtobufCAllocator protobuf_c__allocator = { + &system_alloc, + &system_free, + NULL +}; + +/* === buffer-simple === */ + +void +protobuf_c_buffer_simple_append(ProtobufCBuffer *buffer, + size_t len, const uint8_t *data) +{ + ProtobufCBufferSimple *simp = (ProtobufCBufferSimple *) buffer; + size_t new_len = simp->len + len; + + if (new_len > simp->alloced) { + ProtobufCAllocator *allocator = simp->allocator; + size_t new_alloced = simp->alloced * 2; + uint8_t *new_data; + + if (allocator == NULL) + allocator = &protobuf_c__allocator; + while (new_alloced < new_len) + new_alloced += new_alloced; + new_data = do_alloc(allocator, new_alloced); + if (!new_data) + return; + memcpy(new_data, simp->data, simp->len); + if (simp->must_free_data) + do_free(allocator, simp->data); + else + simp->must_free_data = TRUE; + simp->data = new_data; + simp->alloced = new_alloced; + } + memcpy(simp->data + simp->len, data, len); + simp->len = new_len; +} + +/** + * \defgroup packedsz protobuf_c_message_get_packed_size() implementation + * + * Routines mainly used by protobuf_c_message_get_packed_size(). + * + * \ingroup internal + * @{ + */ + +/** + * Return the number of bytes required to store the tag for the field. Includes + * 3 bits for the wire-type, and a single bit that denotes the end-of-tag. + * + * \param number + * Field tag to encode. + * \return + * Number of bytes required. + */ +static inline size_t +get_tag_size(unsigned number) +{ + if (number < (1 << 4)) { + return 1; + } else if (number < (1 << 11)) { + return 2; + } else if (number < (1 << 18)) { + return 3; + } else if (number < (1 << 25)) { + return 4; + } else { + return 5; + } +} + +/** + * Return the number of bytes required to store a variable-length unsigned + * 32-bit integer in base-128 varint encoding. + * + * \param v + * Value to encode. + * \return + * Number of bytes required. + */ +static inline size_t +uint32_size(uint32_t v) +{ + if (v < (1 << 7)) { + return 1; + } else if (v < (1 << 14)) { + return 2; + } else if (v < (1 << 21)) { + return 3; + } else if (v < (1 << 28)) { + return 4; + } else { + return 5; + } +} + +/** + * Return the number of bytes required to store a variable-length signed 32-bit + * integer in base-128 varint encoding. + * + * \param v + * Value to encode. + * \return + * Number of bytes required. + */ +static inline size_t +int32_size(int32_t v) +{ + if (v < 0) { + return 10; + } else if (v < (1 << 7)) { + return 1; + } else if (v < (1 << 14)) { + return 2; + } else if (v < (1 << 21)) { + return 3; + } else if (v < (1 << 28)) { + return 4; + } else { + return 5; + } +} + +/** + * Return the ZigZag-encoded 32-bit unsigned integer form of a 32-bit signed + * integer. + * + * \param v + * Value to encode. + * \return + * ZigZag encoded integer. + */ +static inline uint32_t +zigzag32(int32_t v) +{ + if (v < 0) + return ((uint32_t) (-v)) * 2 - 1; + else + return v * 2; +} + +/** + * Return the number of bytes required to store a signed 32-bit integer, + * converted to an unsigned 32-bit integer with ZigZag encoding, using base-128 + * varint encoding. + * + * \param v + * Value to encode. + * \return + * Number of bytes required. + */ +static inline size_t +sint32_size(int32_t v) +{ + return uint32_size(zigzag32(v)); +} + +/** + * Return the number of bytes required to store a 64-bit unsigned integer in + * base-128 varint encoding. + * + * \param v + * Value to encode. + * \return + * Number of bytes required. + */ +static inline size_t +uint64_size(uint64_t v) +{ + uint32_t upper_v = (uint32_t) (v >> 32); + + if (upper_v == 0) { + return uint32_size((uint32_t) v); + } else if (upper_v < (1 << 3)) { + return 5; + } else if (upper_v < (1 << 10)) { + return 6; + } else if (upper_v < (1 << 17)) { + return 7; + } else if (upper_v < (1 << 24)) { + return 8; + } else if (upper_v < (1U << 31)) { + return 9; + } else { + return 10; + } +} + +/** + * Return the ZigZag-encoded 64-bit unsigned integer form of a 64-bit signed + * integer. + * + * \param v + * Value to encode. + * \return + * ZigZag encoded integer. + */ +static inline uint64_t +zigzag64(int64_t v) +{ + if (v < 0) + return ((uint64_t) (-v)) * 2 - 1; + else + return v * 2; +} + +/** + * Return the number of bytes required to store a signed 64-bit integer, + * converted to an unsigned 64-bit integer with ZigZag encoding, using base-128 + * varint encoding. + * + * \param v + * Value to encode. + * \return + * Number of bytes required. + */ +static inline size_t +sint64_size(int64_t v) +{ + return uint64_size(zigzag64(v)); +} + +/** + * Calculate the serialized size of a single required message field, including + * the space needed by the preceding tag. + * + * \param field + * Field descriptor for member. + * \param member + * Field to encode. + * \return + * Number of bytes required. + */ +static size_t +required_field_get_packed_size(const ProtobufCFieldDescriptor *field, + const void *member) +{ + size_t rv = get_tag_size(field->id); + + switch (field->type) { + case PROTOBUF_C_TYPE_SINT32: + return rv + sint32_size(*(const int32_t *) member); + case PROTOBUF_C_TYPE_INT32: + return rv + int32_size(*(const uint32_t *) member); + case PROTOBUF_C_TYPE_UINT32: + return rv + uint32_size(*(const uint32_t *) member); + case PROTOBUF_C_TYPE_SINT64: + return rv + sint64_size(*(const int64_t *) member); + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: + return rv + uint64_size(*(const uint64_t *) member); + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + return rv + 4; + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + return rv + 8; + case PROTOBUF_C_TYPE_BOOL: + return rv + 1; + case PROTOBUF_C_TYPE_FLOAT: + return rv + 4; + case PROTOBUF_C_TYPE_DOUBLE: + return rv + 8; + case PROTOBUF_C_TYPE_ENUM: + /* \todo Is this correct for negative-valued enums? */ + return rv + uint32_size(*(const uint32_t *) member); + case PROTOBUF_C_TYPE_STRING: { + const char *str = *(char * const *) member; + size_t len = str ? strlen(str) : 0; + return rv + uint32_size(len) + len; + } + case PROTOBUF_C_TYPE_BYTES: { + size_t len = ((const ProtobufCBinaryData *) member)->len; + return rv + uint32_size(len) + len; + } + case PROTOBUF_C_TYPE_MESSAGE: { + const ProtobufCMessage *msg = *(ProtobufCMessage * const *) member; + size_t subrv = msg ? protobuf_c_message_get_packed_size(msg) : 0; + return rv + uint32_size(subrv) + subrv; + } + } + PROTOBUF_C__ASSERT_NOT_REACHED(); + return 0; +} + +/** + * Calculate the serialized size of a single oneof message field, including + * the space needed by the preceding tag. Returns 0 if the oneof field isn't + * selected or is not set. + * + * \param field + * Field descriptor for member. + * \param oneof_case + * A pointer to the case enum that selects the field in the oneof. + * \param member + * Field to encode. + * \return + * Number of bytes required. + */ +static size_t +oneof_field_get_packed_size(const ProtobufCFieldDescriptor *field, + const uint32_t *oneof_case, + const void *member) +{ + if (*oneof_case == field->id) { + if (field->type == PROTOBUF_C_TYPE_MESSAGE || + field->type == PROTOBUF_C_TYPE_STRING) + { + const void *ptr = *(const void * const *) member; + if (ptr == NULL || ptr == field->default_value) + return 0; + } + } else { + return 0; + } + return required_field_get_packed_size(field, member); +} + +/** + * Calculate the serialized size of a single optional message field, including + * the space needed by the preceding tag. Returns 0 if the optional field isn't + * set. + * + * \param field + * Field descriptor for member. + * \param has + * True if the field exists, false if not. + * \param member + * Field to encode. + * \return + * Number of bytes required. + */ +static size_t +optional_field_get_packed_size(const ProtobufCFieldDescriptor *field, + const protobuf_c_boolean *has, + const void *member) +{ + if (field->type == PROTOBUF_C_TYPE_MESSAGE || + field->type == PROTOBUF_C_TYPE_STRING) + { + const void *ptr = *(const void * const *) member; + if (ptr == NULL || ptr == field->default_value) + return 0; + } else { + if (!*has) + return 0; + } + return required_field_get_packed_size(field, member); +} + +/** + * Calculate the serialized size of repeated message fields, which may consist + * of any number of values (including 0). Includes the space needed by the + * preceding tags (as needed). + * + * \param field + * Field descriptor for member. + * \param count + * Number of repeated field members. + * \param member + * Field to encode. + * \return + * Number of bytes required. + */ +static size_t +repeated_field_get_packed_size(const ProtobufCFieldDescriptor *field, + size_t count, const void *member) +{ + size_t header_size; + size_t rv = 0; + unsigned i; + void *array = *(void * const *) member; + + if (count == 0) + return 0; + header_size = get_tag_size(field->id); + if (0 == (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED)) + header_size *= count; + + switch (field->type) { + case PROTOBUF_C_TYPE_SINT32: + for (i = 0; i < count; i++) + rv += sint32_size(((int32_t *) array)[i]); + break; + case PROTOBUF_C_TYPE_INT32: + for (i = 0; i < count; i++) + rv += int32_size(((uint32_t *) array)[i]); + break; + case PROTOBUF_C_TYPE_UINT32: + case PROTOBUF_C_TYPE_ENUM: + for (i = 0; i < count; i++) + rv += uint32_size(((uint32_t *) array)[i]); + break; + case PROTOBUF_C_TYPE_SINT64: + for (i = 0; i < count; i++) + rv += sint64_size(((int64_t *) array)[i]); + break; + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: + for (i = 0; i < count; i++) + rv += uint64_size(((uint64_t *) array)[i]); + break; + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + rv += 4 * count; + break; + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + rv += 8 * count; + break; + case PROTOBUF_C_TYPE_BOOL: + rv += count; + break; + case PROTOBUF_C_TYPE_STRING: + for (i = 0; i < count; i++) { + size_t len = strlen(((char **) array)[i]); + rv += uint32_size(len) + len; + } + break; + case PROTOBUF_C_TYPE_BYTES: + for (i = 0; i < count; i++) { + size_t len = ((ProtobufCBinaryData *) array)[i].len; + rv += uint32_size(len) + len; + } + break; + case PROTOBUF_C_TYPE_MESSAGE: + for (i = 0; i < count; i++) { + size_t len = protobuf_c_message_get_packed_size( + ((ProtobufCMessage **) array)[i]); + rv += uint32_size(len) + len; + } + break; + } + + if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED)) + header_size += uint32_size(rv); + return header_size + rv; +} + +/** + * Calculate the serialized size of an unknown field, i.e. one that is passed + * through mostly uninterpreted. This is required for forward compatibility if + * new fields are added to the message descriptor. + * + * \param field + * Unknown field type. + * \return + * Number of bytes required. + */ +static inline size_t +unknown_field_get_packed_size(const ProtobufCMessageUnknownField *field) +{ + return get_tag_size(field->tag) + field->len; +} + +/**@}*/ + +/* + * Calculate the serialized size of the message. + */ +size_t protobuf_c_message_get_packed_size(const ProtobufCMessage *message) +{ + unsigned i; + size_t rv = 0; + + ASSERT_IS_MESSAGE(message); + for (i = 0; i < message->descriptor->n_fields; i++) { + const ProtobufCFieldDescriptor *field = + message->descriptor->fields + i; + const void *member = + ((const char *) message) + field->offset; + const void *qmember = + ((const char *) message) + field->quantifier_offset; + + if (field->label == PROTOBUF_C_LABEL_REQUIRED) { + rv += required_field_get_packed_size(field, member); + } else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) { + if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF)) + rv += oneof_field_get_packed_size(field, qmember, member); + else + rv += optional_field_get_packed_size(field, qmember, member); + } else { + rv += repeated_field_get_packed_size( + field, + *(const size_t *) qmember, + member + ); + } + } + for (i = 0; i < message->n_unknown_fields; i++) + rv += unknown_field_get_packed_size(&message->unknown_fields[i]); + return rv; +} + +/** + * \defgroup pack protobuf_c_message_pack() implementation + * + * Routines mainly used by protobuf_c_message_pack(). + * + * \ingroup internal + * @{ + */ + +/** + * Pack an unsigned 32-bit integer in base-128 varint encoding and return the + * number of bytes written, which must be 5 or less. + * + * \param value + * Value to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +uint32_pack(uint32_t value, uint8_t *out) +{ + unsigned rv = 0; + + if (value >= 0x80) { + out[rv++] = value | 0x80; + value >>= 7; + if (value >= 0x80) { + out[rv++] = value | 0x80; + value >>= 7; + if (value >= 0x80) { + out[rv++] = value | 0x80; + value >>= 7; + if (value >= 0x80) { + out[rv++] = value | 0x80; + value >>= 7; + } + } + } + } + /* assert: value<128 */ + out[rv++] = value; + return rv; +} + +/** + * Pack a signed 32-bit integer and return the number of bytes written. + * Negative numbers are encoded as two's complement 64-bit integers. + * + * \param value + * Value to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +int32_pack(int32_t value, uint8_t *out) +{ + if (value < 0) { + out[0] = value | 0x80; + out[1] = (value >> 7) | 0x80; + out[2] = (value >> 14) | 0x80; + out[3] = (value >> 21) | 0x80; + out[4] = (value >> 28) | 0x80; + out[5] = out[6] = out[7] = out[8] = 0xff; + out[9] = 0x01; + return 10; + } else { + return uint32_pack(value, out); + } +} + +/** + * Pack a signed 32-bit integer using ZigZag encoding and return the number of + * bytes written. + * + * \param value + * Value to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +sint32_pack(int32_t value, uint8_t *out) +{ + return uint32_pack(zigzag32(value), out); +} + +/** + * Pack a 64-bit unsigned integer using base-128 varint encoding and return the + * number of bytes written. + * + * \param value + * Value to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static size_t +uint64_pack(uint64_t value, uint8_t *out) +{ + uint32_t hi = (uint32_t) (value >> 32); + uint32_t lo = (uint32_t) value; + unsigned rv; + + if (hi == 0) + return uint32_pack((uint32_t) lo, out); + out[0] = (lo) | 0x80; + out[1] = (lo >> 7) | 0x80; + out[2] = (lo >> 14) | 0x80; + out[3] = (lo >> 21) | 0x80; + if (hi < 8) { + out[4] = (hi << 4) | (lo >> 28); + return 5; + } else { + out[4] = ((hi & 7) << 4) | (lo >> 28) | 0x80; + hi >>= 3; + } + rv = 5; + while (hi >= 128) { + out[rv++] = hi | 0x80; + hi >>= 7; + } + out[rv++] = hi; + return rv; +} + +/** + * Pack a 64-bit signed integer in ZigZag encoding and return the number of + * bytes written. + * + * \param value + * Value to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +sint64_pack(int64_t value, uint8_t *out) +{ + return uint64_pack(zigzag64(value), out); +} + +/** + * Pack a 32-bit quantity in little-endian byte order. Used for protobuf wire + * types fixed32, sfixed32, float. Similar to "htole32". + * + * \param value + * Value to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +fixed32_pack(uint32_t value, void *out) +{ +#if !defined(WORDS_BIGENDIAN) + memcpy(out, &value, 4); +#else + uint8_t *buf = out; + + buf[0] = value; + buf[1] = value >> 8; + buf[2] = value >> 16; + buf[3] = value >> 24; +#endif + return 4; +} + +/** + * Pack a 64-bit quantity in little-endian byte order. Used for protobuf wire + * types fixed64, sfixed64, double. Similar to "htole64". + * + * \todo The big-endian impl is really only good for 32-bit machines, a 64-bit + * version would be appreciated, plus a way to decide to use 64-bit math where + * convenient. + * + * \param value + * Value to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +fixed64_pack(uint64_t value, void *out) +{ +#if !defined(WORDS_BIGENDIAN) + memcpy(out, &value, 8); +#else + fixed32_pack(value, out); + fixed32_pack(value >> 32, ((char *) out) + 4); +#endif + return 8; +} + +/** + * Pack a boolean value as an integer and return the number of bytes written. + * + * \todo Perhaps on some platforms *out = !!value would be a better impl, b/c + * that is idiomatic C++ in some STL implementations. + * + * \param value + * Value to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +boolean_pack(protobuf_c_boolean value, uint8_t *out) +{ + *out = value ? TRUE : FALSE; + return 1; +} + +/** + * Pack a NUL-terminated C string and return the number of bytes written. The + * output includes a length delimiter. + * + * The NULL pointer is treated as an empty string. This isn't really necessary, + * but it allows people to leave required strings blank. (See Issue #13 in the + * bug tracker for a little more explanation). + * + * \param str + * String to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +string_pack(const char *str, uint8_t *out) +{ + if (str == NULL) { + out[0] = 0; + return 1; + } else { + size_t len = strlen(str); + size_t rv = uint32_pack(len, out); + memcpy(out + rv, str, len); + return rv + len; + } +} + +/** + * Pack a ProtobufCBinaryData and return the number of bytes written. The output + * includes a length delimiter. + * + * \param bd + * ProtobufCBinaryData to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +binary_data_pack(const ProtobufCBinaryData *bd, uint8_t *out) +{ + size_t len = bd->len; + size_t rv = uint32_pack(len, out); + memcpy(out + rv, bd->data, len); + return rv + len; +} + +/** + * Pack a ProtobufCMessage and return the number of bytes written. The output + * includes a length delimiter. + * + * \param message + * ProtobufCMessage object to pack. + * \param[out] out + * Packed message. + * \return + * Number of bytes written to `out`. + */ +static inline size_t +prefixed_message_pack(const ProtobufCMessage *message, uint8_t *out) +{ + if (message == NULL) { + out[0] = 0; + return 1; + } else { + size_t rv = protobuf_c_message_pack(message, out + 1); + uint32_t rv_packed_size = uint32_size(rv); + if (rv_packed_size != 1) + memmove(out + rv_packed_size, out + 1, rv); + return uint32_pack(rv, out) + rv; + } +} + +/** + * Pack a field tag. + * + * Wire-type will be added in required_field_pack(). + * + * \todo Just call uint64_pack on 64-bit platforms. + * + * \param id + * Tag value to encode. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static size_t +tag_pack(uint32_t id, uint8_t *out) +{ + if (id < (1 << (32 - 3))) + return uint32_pack(id << 3, out); + else + return uint64_pack(((uint64_t) id) << 3, out); +} + +/** + * Pack a required field and return the number of bytes written. + * + * \param field + * Field descriptor. + * \param member + * The field member. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static size_t +required_field_pack(const ProtobufCFieldDescriptor *field, + const void *member, uint8_t *out) +{ + size_t rv = tag_pack(field->id, out); + + switch (field->type) { + case PROTOBUF_C_TYPE_SINT32: + out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + return rv + sint32_pack(*(const int32_t *) member, out + rv); + case PROTOBUF_C_TYPE_INT32: + out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + return rv + int32_pack(*(const uint32_t *) member, out + rv); + case PROTOBUF_C_TYPE_UINT32: + case PROTOBUF_C_TYPE_ENUM: + out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + return rv + uint32_pack(*(const uint32_t *) member, out + rv); + case PROTOBUF_C_TYPE_SINT64: + out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + return rv + sint64_pack(*(const int64_t *) member, out + rv); + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: + out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + return rv + uint64_pack(*(const uint64_t *) member, out + rv); + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + out[0] |= PROTOBUF_C_WIRE_TYPE_32BIT; + return rv + fixed32_pack(*(const uint32_t *) member, out + rv); + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + out[0] |= PROTOBUF_C_WIRE_TYPE_64BIT; + return rv + fixed64_pack(*(const uint64_t *) member, out + rv); + case PROTOBUF_C_TYPE_BOOL: + out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + return rv + boolean_pack(*(const protobuf_c_boolean *) member, out + rv); + case PROTOBUF_C_TYPE_STRING: + out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; + return rv + string_pack(*(char *const *) member, out + rv); + case PROTOBUF_C_TYPE_BYTES: + out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; + return rv + binary_data_pack((const ProtobufCBinaryData *) member, out + rv); + case PROTOBUF_C_TYPE_MESSAGE: + out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; + return rv + prefixed_message_pack(*(ProtobufCMessage * const *) member, out + rv); + } + PROTOBUF_C__ASSERT_NOT_REACHED(); + return 0; +} + +/** + * Pack a oneof field and return the number of bytes written. Only packs the + * field that is selected by the case enum. + * + * \param field + * Field descriptor. + * \param oneof_case + * A pointer to the case enum that selects the field in the oneof. + * \param member + * The field member. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static size_t +oneof_field_pack(const ProtobufCFieldDescriptor *field, + const uint32_t *oneof_case, + const void *member, uint8_t *out) +{ + if (*oneof_case == field->id) { + if (field->type == PROTOBUF_C_TYPE_MESSAGE || + field->type == PROTOBUF_C_TYPE_STRING) + { + const void *ptr = *(const void * const *) member; + if (ptr == NULL || ptr == field->default_value) + return 0; + } + } else { + return 0; + } + return required_field_pack(field, member, out); +} + +/** + * Pack an optional field and return the number of bytes written. + * + * \param field + * Field descriptor. + * \param has + * Whether the field is set. + * \param member + * The field member. + * \param[out] out + * Packed value. + * \return + * Number of bytes written to `out`. + */ +static size_t +optional_field_pack(const ProtobufCFieldDescriptor *field, + const protobuf_c_boolean *has, + const void *member, uint8_t *out) +{ + if (field->type == PROTOBUF_C_TYPE_MESSAGE || + field->type == PROTOBUF_C_TYPE_STRING) + { + const void *ptr = *(const void * const *) member; + if (ptr == NULL || ptr == field->default_value) + return 0; + } else { + if (!*has) + return 0; + } + return required_field_pack(field, member, out); +} + +/** + * Given a field type, return the in-memory size. + * + * \todo Implement as a table lookup. + * + * \param type + * Field type. + * \return + * Size of the field. + */ +static inline size_t +sizeof_elt_in_repeated_array(ProtobufCType type) +{ + switch (type) { + case PROTOBUF_C_TYPE_SINT32: + case PROTOBUF_C_TYPE_INT32: + case PROTOBUF_C_TYPE_UINT32: + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + case PROTOBUF_C_TYPE_ENUM: + return 4; + case PROTOBUF_C_TYPE_SINT64: + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + return 8; + case PROTOBUF_C_TYPE_BOOL: + return sizeof(protobuf_c_boolean); + case PROTOBUF_C_TYPE_STRING: + case PROTOBUF_C_TYPE_MESSAGE: + return sizeof(void *); + case PROTOBUF_C_TYPE_BYTES: + return sizeof(ProtobufCBinaryData); + } + PROTOBUF_C__ASSERT_NOT_REACHED(); + return 0; +} + +/** + * Pack an array of 32-bit quantities. + * + * \param[out] out + * Destination. + * \param[in] in + * Source. + * \param[in] n + * Number of elements in the source array. + */ +static void +copy_to_little_endian_32(void *out, const void *in, const unsigned n) +{ +#if !defined(WORDS_BIGENDIAN) + memcpy(out, in, n * 4); +#else + unsigned i; + const uint32_t *ini = in; + for (i = 0; i < n; i++) + fixed32_pack(ini[i], (uint32_t *) out + i); +#endif +} + +/** + * Pack an array of 64-bit quantities. + * + * \param[out] out + * Destination. + * \param[in] in + * Source. + * \param[in] n + * Number of elements in the source array. + */ +static void +copy_to_little_endian_64(void *out, const void *in, const unsigned n) +{ +#if !defined(WORDS_BIGENDIAN) + memcpy(out, in, n * 8); +#else + unsigned i; + const uint64_t *ini = in; + for (i = 0; i < n; i++) + fixed64_pack(ini[i], (uint64_t *) out + i); +#endif +} + +/** + * Get the minimum number of bytes required to pack a field value of a + * particular type. + * + * \param type + * Field type. + * \return + * Number of bytes. + */ +static unsigned +get_type_min_size(ProtobufCType type) +{ + if (type == PROTOBUF_C_TYPE_SFIXED32 || + type == PROTOBUF_C_TYPE_FIXED32 || + type == PROTOBUF_C_TYPE_FLOAT) + { + return 4; + } + if (type == PROTOBUF_C_TYPE_SFIXED64 || + type == PROTOBUF_C_TYPE_FIXED64 || + type == PROTOBUF_C_TYPE_DOUBLE) + { + return 8; + } + return 1; +} + +/** + * Packs the elements of a repeated field and returns the serialised field and + * its length. + * + * \param field + * Field descriptor. + * \param count + * Number of elements in the repeated field array. + * \param member + * Pointer to the elements for this repeated field. + * \param[out] out + * Serialised representation of the repeated field. + * \return + * Number of bytes serialised to `out`. + */ +static size_t +repeated_field_pack(const ProtobufCFieldDescriptor *field, + size_t count, const void *member, uint8_t *out) +{ + void *array = *(void * const *) member; + unsigned i; + + if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED)) { + unsigned header_len; + unsigned len_start; + unsigned min_length; + unsigned payload_len; + unsigned length_size_min; + unsigned actual_length_size; + uint8_t *payload_at; + + if (count == 0) + return 0; + header_len = tag_pack(field->id, out); + out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; + len_start = header_len; + min_length = get_type_min_size(field->type) * count; + length_size_min = uint32_size(min_length); + header_len += length_size_min; + payload_at = out + header_len; + + switch (field->type) { + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + copy_to_little_endian_32(payload_at, array, count); + payload_at += count * 4; + break; + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + copy_to_little_endian_64(payload_at, array, count); + payload_at += count * 8; + break; + case PROTOBUF_C_TYPE_INT32: { + const int32_t *arr = (const int32_t *) array; + for (i = 0; i < count; i++) + payload_at += int32_pack(arr[i], payload_at); + break; + } + case PROTOBUF_C_TYPE_SINT32: { + const int32_t *arr = (const int32_t *) array; + for (i = 0; i < count; i++) + payload_at += sint32_pack(arr[i], payload_at); + break; + } + case PROTOBUF_C_TYPE_SINT64: { + const int64_t *arr = (const int64_t *) array; + for (i = 0; i < count; i++) + payload_at += sint64_pack(arr[i], payload_at); + break; + } + case PROTOBUF_C_TYPE_ENUM: + case PROTOBUF_C_TYPE_UINT32: { + const uint32_t *arr = (const uint32_t *) array; + for (i = 0; i < count; i++) + payload_at += uint32_pack(arr[i], payload_at); + break; + } + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: { + const uint64_t *arr = (const uint64_t *) array; + for (i = 0; i < count; i++) + payload_at += uint64_pack(arr[i], payload_at); + break; + } + case PROTOBUF_C_TYPE_BOOL: { + const protobuf_c_boolean *arr = (const protobuf_c_boolean *) array; + for (i = 0; i < count; i++) + payload_at += boolean_pack(arr[i], payload_at); + break; + } + default: + PROTOBUF_C__ASSERT_NOT_REACHED(); + } + + payload_len = payload_at - (out + header_len); + actual_length_size = uint32_size(payload_len); + if (length_size_min != actual_length_size) { + assert(actual_length_size == length_size_min + 1); + memmove(out + header_len + 1, out + header_len, + payload_len); + header_len++; + } + uint32_pack(payload_len, out + len_start); + return header_len + payload_len; + } else { + /* not "packed" cased */ + /* CONSIDER: optimize this case a bit (by putting the loop inside the switch) */ + size_t rv = 0; + unsigned siz = sizeof_elt_in_repeated_array(field->type); + + for (i = 0; i < count; i++) { + rv += required_field_pack(field, array, out + rv); + array = (char *)array + siz; + } + return rv; + } +} + +static size_t +unknown_field_pack(const ProtobufCMessageUnknownField *field, uint8_t *out) +{ + size_t rv = tag_pack(field->tag, out); + out[0] |= field->wire_type; + memcpy(out + rv, field->data, field->len); + return rv + field->len; +} + +/**@}*/ + +size_t +protobuf_c_message_pack(const ProtobufCMessage *message, uint8_t *out) +{ + unsigned i; + size_t rv = 0; + + ASSERT_IS_MESSAGE(message); + for (i = 0; i < message->descriptor->n_fields; i++) { + const ProtobufCFieldDescriptor *field = + message->descriptor->fields + i; + const void *member = ((const char *) message) + field->offset; + + /* + * It doesn't hurt to compute qmember (a pointer to the + * quantifier field of the structure), but the pointer is only + * valid if the field is: + * - a repeated field, or + * - a field that is part of a oneof + * - an optional field that isn't a pointer type + * (Meaning: not a message or a string). + */ + const void *qmember = + ((const char *) message) + field->quantifier_offset; + + if (field->label == PROTOBUF_C_LABEL_REQUIRED) { + rv += required_field_pack(field, member, out + rv); + } else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) { + if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF)) + rv += oneof_field_pack (field, qmember, member, out + rv); + else + rv += optional_field_pack(field, qmember, member, out + rv); + } else { + rv += repeated_field_pack(field, *(const size_t *) qmember, + member, out + rv); + } + } + for (i = 0; i < message->n_unknown_fields; i++) + rv += unknown_field_pack(&message->unknown_fields[i], out + rv); + return rv; +} + +/** + * \defgroup packbuf protobuf_c_message_pack_to_buffer() implementation + * + * Routines mainly used by protobuf_c_message_pack_to_buffer(). + * + * \ingroup internal + * @{ + */ + +/** + * Pack a required field to a virtual buffer. + * + * \param field + * Field descriptor. + * \param member + * The element to be packed. + * \param[out] buffer + * Virtual buffer to append data to. + * \return + * Number of bytes packed. + */ +static size_t +required_field_pack_to_buffer(const ProtobufCFieldDescriptor *field, + const void *member, ProtobufCBuffer *buffer) +{ + size_t rv; + uint8_t scratch[MAX_UINT64_ENCODED_SIZE * 2]; + + rv = tag_pack(field->id, scratch); + switch (field->type) { + case PROTOBUF_C_TYPE_SINT32: + scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + rv += sint32_pack(*(const int32_t *) member, scratch + rv); + buffer->append(buffer, rv, scratch); + break; + case PROTOBUF_C_TYPE_INT32: + scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + rv += int32_pack(*(const uint32_t *) member, scratch + rv); + buffer->append(buffer, rv, scratch); + break; + case PROTOBUF_C_TYPE_UINT32: + case PROTOBUF_C_TYPE_ENUM: + scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + rv += uint32_pack(*(const uint32_t *) member, scratch + rv); + buffer->append(buffer, rv, scratch); + break; + case PROTOBUF_C_TYPE_SINT64: + scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + rv += sint64_pack(*(const int64_t *) member, scratch + rv); + buffer->append(buffer, rv, scratch); + break; + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: + scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + rv += uint64_pack(*(const uint64_t *) member, scratch + rv); + buffer->append(buffer, rv, scratch); + break; + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + scratch[0] |= PROTOBUF_C_WIRE_TYPE_32BIT; + rv += fixed32_pack(*(const uint32_t *) member, scratch + rv); + buffer->append(buffer, rv, scratch); + break; + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + scratch[0] |= PROTOBUF_C_WIRE_TYPE_64BIT; + rv += fixed64_pack(*(const uint64_t *) member, scratch + rv); + buffer->append(buffer, rv, scratch); + break; + case PROTOBUF_C_TYPE_BOOL: + scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; + rv += boolean_pack(*(const protobuf_c_boolean *) member, scratch + rv); + buffer->append(buffer, rv, scratch); + break; + case PROTOBUF_C_TYPE_STRING: { + const char *str = *(char *const *) member; + size_t sublen = str ? strlen(str) : 0; + + scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; + rv += uint32_pack(sublen, scratch + rv); + buffer->append(buffer, rv, scratch); + buffer->append(buffer, sublen, (const uint8_t *) str); + rv += sublen; + break; + } + case PROTOBUF_C_TYPE_BYTES: { + const ProtobufCBinaryData *bd = ((const ProtobufCBinaryData *) member); + size_t sublen = bd->len; + + scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; + rv += uint32_pack(sublen, scratch + rv); + buffer->append(buffer, rv, scratch); + buffer->append(buffer, sublen, bd->data); + rv += sublen; + break; + } + case PROTOBUF_C_TYPE_MESSAGE: { + uint8_t simple_buffer_scratch[256]; + size_t sublen; + const ProtobufCMessage *msg = *(ProtobufCMessage * const *) member; + ProtobufCBufferSimple simple_buffer = + PROTOBUF_C_BUFFER_SIMPLE_INIT(simple_buffer_scratch); + + scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; + if (msg == NULL) + sublen = 0; + else + sublen = protobuf_c_message_pack_to_buffer(msg, &simple_buffer.base); + rv += uint32_pack(sublen, scratch + rv); + buffer->append(buffer, rv, scratch); + buffer->append(buffer, sublen, simple_buffer.data); + rv += sublen; + PROTOBUF_C_BUFFER_SIMPLE_CLEAR(&simple_buffer); + break; + } + default: + PROTOBUF_C__ASSERT_NOT_REACHED(); + } + return rv; +} + +/** + * Pack a oneof field to a buffer. Only packs the field that is selected by the case enum. + * + * \param field + * Field descriptor. + * \param oneof_case + * A pointer to the case enum that selects the field in the oneof. + * \param member + * The element to be packed. + * \param[out] buffer + * Virtual buffer to append data to. + * \return + * Number of bytes serialised to `buffer`. + */ +static size_t +oneof_field_pack_to_buffer(const ProtobufCFieldDescriptor *field, + const uint32_t *oneof_case, + const void *member, ProtobufCBuffer *buffer) +{ + if (*oneof_case == field->id) { + if (field->type == PROTOBUF_C_TYPE_MESSAGE || + field->type == PROTOBUF_C_TYPE_STRING) + { + const void *ptr = *(const void *const *) member; + if (ptr == NULL || ptr == field->default_value) + return 0; + } + } else { + return 0; + } + return required_field_pack_to_buffer(field, member, buffer); +} + +/** + * Pack an optional field to a buffer. + * + * \param field + * Field descriptor. + * \param has + * Whether the field is set. + * \param member + * The element to be packed. + * \param[out] buffer + * Virtual buffer to append data to. + * \return + * Number of bytes serialised to `buffer`. + */ +static size_t +optional_field_pack_to_buffer(const ProtobufCFieldDescriptor *field, + const protobuf_c_boolean *has, + const void *member, ProtobufCBuffer *buffer) +{ + if (field->type == PROTOBUF_C_TYPE_MESSAGE || + field->type == PROTOBUF_C_TYPE_STRING) + { + const void *ptr = *(const void *const *) member; + if (ptr == NULL || ptr == field->default_value) + return 0; + } else { + if (!*has) + return 0; + } + return required_field_pack_to_buffer(field, member, buffer); +} + +/** + * Get the packed size of an array of same field type. + * + * \param field + * Field descriptor. + * \param count + * Number of elements of this type. + * \param array + * The elements to get the size of. + * \return + * Number of bytes required. + */ +static size_t +get_packed_payload_length(const ProtobufCFieldDescriptor *field, + unsigned count, const void *array) +{ + unsigned rv = 0; + unsigned i; + + switch (field->type) { + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + return count * 4; + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + return count * 8; + case PROTOBUF_C_TYPE_INT32: { + const int32_t *arr = (const int32_t *) array; + for (i = 0; i < count; i++) + rv += int32_size(arr[i]); + break; + } + case PROTOBUF_C_TYPE_SINT32: { + const int32_t *arr = (const int32_t *) array; + for (i = 0; i < count; i++) + rv += sint32_size(arr[i]); + break; + } + case PROTOBUF_C_TYPE_ENUM: + case PROTOBUF_C_TYPE_UINT32: { + const uint32_t *arr = (const uint32_t *) array; + for (i = 0; i < count; i++) + rv += uint32_size(arr[i]); + break; + } + case PROTOBUF_C_TYPE_SINT64: { + const int64_t *arr = (const int64_t *) array; + for (i = 0; i < count; i++) + rv += sint64_size(arr[i]); + break; + } + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: { + const uint64_t *arr = (const uint64_t *) array; + for (i = 0; i < count; i++) + rv += uint64_size(arr[i]); + break; + } + case PROTOBUF_C_TYPE_BOOL: + return count; + default: + PROTOBUF_C__ASSERT_NOT_REACHED(); + } + return rv; +} + +/** + * Pack an array of same field type to a virtual buffer. + * + * \param field + * Field descriptor. + * \param count + * Number of elements of this type. + * \param array + * The elements to get the size of. + * \param[out] buffer + * Virtual buffer to append data to. + * \return + * Number of bytes packed. + */ +static size_t +pack_buffer_packed_payload(const ProtobufCFieldDescriptor *field, + unsigned count, const void *array, + ProtobufCBuffer *buffer) +{ + uint8_t scratch[16]; + size_t rv = 0; + unsigned i; + + switch (field->type) { + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: +#if !defined(WORDS_BIGENDIAN) + rv = count * 4; + goto no_packing_needed; +#else + for (i = 0; i < count; i++) { + unsigned len = fixed32_pack(((uint32_t *) array)[i], scratch); + buffer->append(buffer, len, scratch); + rv += len; + } + break; +#endif + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: +#if !defined(WORDS_BIGENDIAN) + rv = count * 8; + goto no_packing_needed; +#else + for (i = 0; i < count; i++) { + unsigned len = fixed64_pack(((uint64_t *) array)[i], scratch); + buffer->append(buffer, len, scratch); + rv += len; + } + break; +#endif + case PROTOBUF_C_TYPE_INT32: + for (i = 0; i < count; i++) { + unsigned len = int32_pack(((int32_t *) array)[i], scratch); + buffer->append(buffer, len, scratch); + rv += len; + } + break; + case PROTOBUF_C_TYPE_SINT32: + for (i = 0; i < count; i++) { + unsigned len = sint32_pack(((int32_t *) array)[i], scratch); + buffer->append(buffer, len, scratch); + rv += len; + } + break; + case PROTOBUF_C_TYPE_ENUM: + case PROTOBUF_C_TYPE_UINT32: + for (i = 0; i < count; i++) { + unsigned len = uint32_pack(((uint32_t *) array)[i], scratch); + buffer->append(buffer, len, scratch); + rv += len; + } + break; + case PROTOBUF_C_TYPE_SINT64: + for (i = 0; i < count; i++) { + unsigned len = sint64_pack(((int64_t *) array)[i], scratch); + buffer->append(buffer, len, scratch); + rv += len; + } + break; + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: + for (i = 0; i < count; i++) { + unsigned len = uint64_pack(((uint64_t *) array)[i], scratch); + buffer->append(buffer, len, scratch); + rv += len; + } + break; + case PROTOBUF_C_TYPE_BOOL: + for (i = 0; i < count; i++) { + unsigned len = boolean_pack(((protobuf_c_boolean *) array)[i], scratch); + buffer->append(buffer, len, scratch); + rv += len; + } + return count; + default: + PROTOBUF_C__ASSERT_NOT_REACHED(); + } + return rv; + +no_packing_needed: + buffer->append(buffer, rv, array); + return rv; +} + +static size_t +repeated_field_pack_to_buffer(const ProtobufCFieldDescriptor *field, + unsigned count, const void *member, + ProtobufCBuffer *buffer) +{ + char *array = *(char * const *) member; + + if (count == 0) + return 0; + if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED)) { + uint8_t scratch[MAX_UINT64_ENCODED_SIZE * 2]; + size_t rv = tag_pack(field->id, scratch); + size_t payload_len = get_packed_payload_length(field, count, array); + size_t tmp; + + scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; + rv += uint32_pack(payload_len, scratch + rv); + buffer->append(buffer, rv, scratch); + tmp = pack_buffer_packed_payload(field, count, array, buffer); + assert(tmp == payload_len); + return rv + payload_len; + } else { + size_t siz; + unsigned i; + /* CONSIDER: optimize this case a bit (by putting the loop inside the switch) */ + unsigned rv = 0; + + siz = sizeof_elt_in_repeated_array(field->type); + for (i = 0; i < count; i++) { + rv += required_field_pack_to_buffer(field, array, buffer); + array += siz; + } + return rv; + } +} + +static size_t +unknown_field_pack_to_buffer(const ProtobufCMessageUnknownField *field, + ProtobufCBuffer *buffer) +{ + uint8_t header[MAX_UINT64_ENCODED_SIZE]; + size_t rv = tag_pack(field->tag, header); + + header[0] |= field->wire_type; + buffer->append(buffer, rv, header); + buffer->append(buffer, field->len, field->data); + return rv + field->len; +} + +/**@}*/ + +size_t +protobuf_c_message_pack_to_buffer(const ProtobufCMessage *message, + ProtobufCBuffer *buffer) +{ + unsigned i; + size_t rv = 0; + + ASSERT_IS_MESSAGE(message); + for (i = 0; i < message->descriptor->n_fields; i++) { + const ProtobufCFieldDescriptor *field = + message->descriptor->fields + i; + const void *member = + ((const char *) message) + field->offset; + const void *qmember = + ((const char *) message) + field->quantifier_offset; + + if (field->label == PROTOBUF_C_LABEL_REQUIRED) { + rv += required_field_pack_to_buffer(field, member, buffer); + } else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) { + if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF)) { + rv += oneof_field_pack_to_buffer( + field, + qmember, + member, + buffer + ); + } else { + rv += optional_field_pack_to_buffer( + field, + qmember, + member, + buffer + ); + } + } else { + rv += repeated_field_pack_to_buffer( + field, + *(const size_t *) qmember, + member, + buffer + ); + } + } + for (i = 0; i < message->n_unknown_fields; i++) + rv += unknown_field_pack_to_buffer(&message->unknown_fields[i], buffer); + + return rv; +} + +/** + * \defgroup unpack unpacking implementation + * + * Routines mainly used by the unpacking functions. + * + * \ingroup internal + * @{ + */ + +static inline int +int_range_lookup(unsigned n_ranges, const ProtobufCIntRange *ranges, int value) +{ + unsigned n; + unsigned start; + + if (n_ranges == 0) + return -1; + start = 0; + n = n_ranges; + while (n > 1) { + unsigned mid = start + n / 2; + + if (value < ranges[mid].start_value) { + n = mid - start; + } else if (value >= ranges[mid].start_value + + (int) (ranges[mid + 1].orig_index - + ranges[mid].orig_index)) + { + unsigned new_start = mid + 1; + n = start + n - new_start; + start = new_start; + } else + return (value - ranges[mid].start_value) + + ranges[mid].orig_index; + } + if (n > 0) { + unsigned start_orig_index = ranges[start].orig_index; + unsigned range_size = + ranges[start + 1].orig_index - start_orig_index; + + if (ranges[start].start_value <= value && + value < (int) (ranges[start].start_value + range_size)) + { + return (value - ranges[start].start_value) + + start_orig_index; + } + } + return -1; +} + +static size_t +parse_tag_and_wiretype(size_t len, + const uint8_t *data, + uint32_t *tag_out, + ProtobufCWireType *wiretype_out) +{ + unsigned max_rv = len > 5 ? 5 : len; + uint32_t tag = (data[0] & 0x7f) >> 3; + unsigned shift = 4; + unsigned rv; + + *wiretype_out = data[0] & 7; + if ((data[0] & 0x80) == 0) { + *tag_out = tag; + return 1; + } + for (rv = 1; rv < max_rv; rv++) { + if (data[rv] & 0x80) { + tag |= (data[rv] & 0x7f) << shift; + shift += 7; + } else { + tag |= data[rv] << shift; + *tag_out = tag; + return rv + 1; + } + } + return 0; /* error: bad header */ +} + +/* sizeof(ScannedMember) must be <= (1< len) { + PROTOBUF_C_UNPACK_ERROR("data too short after length-prefix of %u", val); + return 0; + } + return hdr_len + val; +} + +static size_t +max_b128_numbers(size_t len, const uint8_t *data) +{ + size_t rv = 0; + while (len--) + if ((*data++ & 0x80) == 0) + ++rv; + return rv; +} + +/**@}*/ + +/** + * Merge earlier message into a latter message. + * + * For numeric types and strings, if the same value appears multiple + * times, the parser accepts the last value it sees. For embedded + * message fields, the parser merges multiple instances of the same + * field. That is, all singular scalar fields in the latter instance + * replace those in the former, singular embedded messages are merged, + * and repeated fields are concatenated. + * + * The earlier message should be freed after calling this function, as + * some of its fields may have been reused and changed to their default + * values during the merge. + */ +static protobuf_c_boolean +merge_messages(ProtobufCMessage *earlier_msg, + ProtobufCMessage *latter_msg, + ProtobufCAllocator *allocator) +{ + unsigned i; + const ProtobufCFieldDescriptor *fields = + latter_msg->descriptor->fields; + for (i = 0; i < latter_msg->descriptor->n_fields; i++) { + if (fields[i].label == PROTOBUF_C_LABEL_REPEATED) { + size_t *n_earlier = + STRUCT_MEMBER_PTR(size_t, earlier_msg, + fields[i].quantifier_offset); + uint8_t **p_earlier = + STRUCT_MEMBER_PTR(uint8_t *, earlier_msg, + fields[i].offset); + size_t *n_latter = + STRUCT_MEMBER_PTR(size_t, latter_msg, + fields[i].quantifier_offset); + uint8_t **p_latter = + STRUCT_MEMBER_PTR(uint8_t *, latter_msg, + fields[i].offset); + + if (*n_earlier > 0) { + if (*n_latter > 0) { + /* Concatenate the repeated field */ + size_t el_size = + sizeof_elt_in_repeated_array(fields[i].type); + uint8_t *new_field; + + new_field = do_alloc(allocator, + (*n_earlier + *n_latter) * el_size); + if (!new_field) + return FALSE; + + memcpy(new_field, *p_earlier, + *n_earlier * el_size); + memcpy(new_field + + *n_earlier * el_size, + *p_latter, + *n_latter * el_size); + + do_free(allocator, *p_latter); + do_free(allocator, *p_earlier); + *p_latter = new_field; + *n_latter = *n_earlier + *n_latter; + } else { + /* Zero copy the repeated field from the earlier message */ + *n_latter = *n_earlier; + *p_latter = *p_earlier; + } + /* Make sure the field does not get double freed */ + *n_earlier = 0; + *p_earlier = 0; + } + } else if (fields[i].label == PROTOBUF_C_LABEL_OPTIONAL) { + const ProtobufCFieldDescriptor *field; + uint32_t *earlier_case_p = STRUCT_MEMBER_PTR(uint32_t, + earlier_msg, + fields[i]. + quantifier_offset); + uint32_t *latter_case_p = STRUCT_MEMBER_PTR(uint32_t, + latter_msg, + fields[i]. + quantifier_offset); + protobuf_c_boolean need_to_merge = FALSE; + void *earlier_elem; + void *latter_elem; + const void *def_val; + + if (fields[i].flags & PROTOBUF_C_FIELD_FLAG_ONEOF) { + if (*latter_case_p == 0) { + /* lookup correct oneof field */ + int field_index = + int_range_lookup( + latter_msg->descriptor + ->n_field_ranges, + latter_msg->descriptor + ->field_ranges, + *earlier_case_p); + field = latter_msg->descriptor->fields + + field_index; + } else { + /* Oneof is present in the latter message, move on */ + continue; + } + } else { + field = &fields[i]; + } + + + earlier_elem = + STRUCT_MEMBER_P(earlier_msg, field->offset); + latter_elem = + STRUCT_MEMBER_P(latter_msg, field->offset); + def_val = field->default_value; + + switch (field->type) { + case PROTOBUF_C_TYPE_MESSAGE: { + ProtobufCMessage *em = *(ProtobufCMessage **) earlier_elem; + ProtobufCMessage *lm = *(ProtobufCMessage **) latter_elem; + if (em != NULL) { + if (lm != NULL) { + if (!merge_messages(em, lm, allocator)) + return FALSE; + /* Already merged */ + need_to_merge = FALSE; + } else { + /* Zero copy the message */ + need_to_merge = TRUE; + } + } + break; + } + case PROTOBUF_C_TYPE_BYTES: { + uint8_t *e_data = + ((ProtobufCBinaryData *) earlier_elem)->data; + uint8_t *l_data = + ((ProtobufCBinaryData *) latter_elem)->data; + const ProtobufCBinaryData *d_bd = + (ProtobufCBinaryData *) def_val; + + need_to_merge = + (e_data != NULL && + (d_bd == NULL || + e_data != d_bd->data)) && + (l_data == NULL || + (d_bd != NULL && + l_data == d_bd->data)); + break; + } + case PROTOBUF_C_TYPE_STRING: { + char *e_str = *(char **) earlier_elem; + char *l_str = *(char **) latter_elem; + const char *d_str = def_val; + + need_to_merge = e_str != d_str && l_str == d_str; + break; + } + default: { + /* Could be has field or case enum, the logic is + * equivalent, since 0 (FALSE) means not set for + * oneof */ + need_to_merge = (*earlier_case_p != 0) && + (*latter_case_p == 0); + break; + } + } + + if (need_to_merge) { + size_t el_size = + sizeof_elt_in_repeated_array(field->type); + memcpy(latter_elem, earlier_elem, el_size); + /* + * Reset the element from the old message to 0 + * to make sure earlier message deallocation + * doesn't corrupt zero-copied data in the new + * message, earlier message will be freed after + * this function is called anyway + */ + memset(earlier_elem, 0, el_size); + + if (field->quantifier_offset != 0) { + /* Set the has field or the case enum, + * if applicable */ + *latter_case_p = *earlier_case_p; + *earlier_case_p = 0; + } + } + } + } + return TRUE; +} + +/** + * Count packed elements. + * + * Given a raw slab of packed-repeated values, determine the number of + * elements. This function detects certain kinds of errors but not + * others; the remaining error checking is done by + * parse_packed_repeated_member(). + */ +static protobuf_c_boolean +count_packed_elements(ProtobufCType type, + size_t len, const uint8_t *data, size_t *count_out) +{ + switch (type) { + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + if (len % 4 != 0) { + PROTOBUF_C_UNPACK_ERROR("length must be a multiple of 4 for fixed-length 32-bit types"); + return FALSE; + } + *count_out = len / 4; + return TRUE; + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + if (len % 8 != 0) { + PROTOBUF_C_UNPACK_ERROR("length must be a multiple of 8 for fixed-length 64-bit types"); + return FALSE; + } + *count_out = len / 8; + return TRUE; + case PROTOBUF_C_TYPE_INT32: + case PROTOBUF_C_TYPE_SINT32: + case PROTOBUF_C_TYPE_ENUM: + case PROTOBUF_C_TYPE_UINT32: + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_SINT64: + case PROTOBUF_C_TYPE_UINT64: + *count_out = max_b128_numbers(len, data); + return TRUE; + case PROTOBUF_C_TYPE_BOOL: + *count_out = len; + return TRUE; + case PROTOBUF_C_TYPE_STRING: + case PROTOBUF_C_TYPE_BYTES: + case PROTOBUF_C_TYPE_MESSAGE: + default: + PROTOBUF_C_UNPACK_ERROR("bad protobuf-c type %u for packed-repeated", type); + return FALSE; + } +} + +static inline uint32_t +parse_uint32(unsigned len, const uint8_t *data) +{ + uint32_t rv = data[0] & 0x7f; + if (len > 1) { + rv |= ((uint32_t) (data[1] & 0x7f) << 7); + if (len > 2) { + rv |= ((uint32_t) (data[2] & 0x7f) << 14); + if (len > 3) { + rv |= ((uint32_t) (data[3] & 0x7f) << 21); + if (len > 4) + rv |= ((uint32_t) (data[4]) << 28); + } + } + } + return rv; +} + +static inline uint32_t +parse_int32(unsigned len, const uint8_t *data) +{ + return parse_uint32(len, data); +} + +static inline int32_t +unzigzag32(uint32_t v) +{ + if (v & 1) + return -(v >> 1) - 1; + else + return v >> 1; +} + +static inline uint32_t +parse_fixed_uint32(const uint8_t *data) +{ +#if !defined(WORDS_BIGENDIAN) + uint32_t t; + memcpy(&t, data, 4); + return t; +#else + return data[0] | + ((uint32_t) (data[1]) << 8) | + ((uint32_t) (data[2]) << 16) | + ((uint32_t) (data[3]) << 24); +#endif +} + +static uint64_t +parse_uint64(unsigned len, const uint8_t *data) +{ + unsigned shift, i; + uint64_t rv; + + if (len < 5) + return parse_uint32(len, data); + rv = ((uint64_t) (data[0] & 0x7f)) | + ((uint64_t) (data[1] & 0x7f) << 7) | + ((uint64_t) (data[2] & 0x7f) << 14) | + ((uint64_t) (data[3] & 0x7f) << 21); + shift = 28; + for (i = 4; i < len; i++) { + rv |= (((uint64_t) (data[i] & 0x7f)) << shift); + shift += 7; + } + return rv; +} + +static inline int64_t +unzigzag64(uint64_t v) +{ + if (v & 1) + return -(v >> 1) - 1; + else + return v >> 1; +} + +static inline uint64_t +parse_fixed_uint64(const uint8_t *data) +{ +#if !defined(WORDS_BIGENDIAN) + uint64_t t; + memcpy(&t, data, 8); + return t; +#else + return (uint64_t) parse_fixed_uint32(data) | + (((uint64_t) parse_fixed_uint32(data + 4)) << 32); +#endif +} + +static protobuf_c_boolean +parse_boolean(unsigned len, const uint8_t *data) +{ + unsigned i; + for (i = 0; i < len; i++) + if (data[i] & 0x7f) + return TRUE; + return FALSE; +} + +static protobuf_c_boolean +parse_required_member(ScannedMember *scanned_member, + void *member, + ProtobufCAllocator *allocator, + protobuf_c_boolean maybe_clear) +{ + unsigned len = scanned_member->len; + const uint8_t *data = scanned_member->data; + ProtobufCWireType wire_type = scanned_member->wire_type; + + switch (scanned_member->field->type) { + case PROTOBUF_C_TYPE_INT32: + if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) + return FALSE; + *(uint32_t *) member = parse_int32(len, data); + return TRUE; + case PROTOBUF_C_TYPE_UINT32: + if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) + return FALSE; + *(uint32_t *) member = parse_uint32(len, data); + return TRUE; + case PROTOBUF_C_TYPE_SINT32: + if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) + return FALSE; + *(int32_t *) member = unzigzag32(parse_uint32(len, data)); + return TRUE; + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + if (wire_type != PROTOBUF_C_WIRE_TYPE_32BIT) + return FALSE; + *(uint32_t *) member = parse_fixed_uint32(data); + return TRUE; + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: + if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) + return FALSE; + *(uint64_t *) member = parse_uint64(len, data); + return TRUE; + case PROTOBUF_C_TYPE_SINT64: + if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) + return FALSE; + *(int64_t *) member = unzigzag64(parse_uint64(len, data)); + return TRUE; + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + if (wire_type != PROTOBUF_C_WIRE_TYPE_64BIT) + return FALSE; + *(uint64_t *) member = parse_fixed_uint64(data); + return TRUE; + case PROTOBUF_C_TYPE_BOOL: + *(protobuf_c_boolean *) member = parse_boolean(len, data); + return TRUE; + case PROTOBUF_C_TYPE_ENUM: + if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) + return FALSE; + *(uint32_t *) member = parse_uint32(len, data); + return TRUE; + case PROTOBUF_C_TYPE_STRING: { + char **pstr = member; + unsigned pref_len = scanned_member->length_prefix_len; + + if (wire_type != PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED) + return FALSE; + + if (maybe_clear && *pstr != NULL) { + const char *def = scanned_member->field->default_value; + if (*pstr != NULL && *pstr != def) + do_free(allocator, *pstr); + } + *pstr = do_alloc(allocator, len - pref_len + 1); + if (*pstr == NULL) + return FALSE; + memcpy(*pstr, data + pref_len, len - pref_len); + (*pstr)[len - pref_len] = 0; + return TRUE; + } + case PROTOBUF_C_TYPE_BYTES: { + ProtobufCBinaryData *bd = member; + const ProtobufCBinaryData *def_bd; + unsigned pref_len = scanned_member->length_prefix_len; + + if (wire_type != PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED) + return FALSE; + + def_bd = scanned_member->field->default_value; + if (maybe_clear && + bd->data != NULL && + (def_bd == NULL || bd->data != def_bd->data)) + { + do_free(allocator, bd->data); + } + if (len - pref_len > 0) { + bd->data = do_alloc(allocator, len - pref_len); + if (bd->data == NULL) + return FALSE; + memcpy(bd->data, data + pref_len, len - pref_len); + } else { + bd->data = NULL; + } + bd->len = len - pref_len; + return TRUE; + } + case PROTOBUF_C_TYPE_MESSAGE: { + ProtobufCMessage **pmessage = member; + ProtobufCMessage *subm; + const ProtobufCMessage *def_mess; + protobuf_c_boolean merge_successful = TRUE; + unsigned pref_len = scanned_member->length_prefix_len; + + if (wire_type != PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED) + return FALSE; + + def_mess = scanned_member->field->default_value; + subm = protobuf_c_message_unpack(scanned_member->field->descriptor, + allocator, + len - pref_len, + data + pref_len); + + if (maybe_clear && + *pmessage != NULL && + *pmessage != def_mess) + { + if (subm != NULL) + merge_successful = merge_messages(*pmessage, subm, allocator); + /* Delete the previous message */ + protobuf_c_message_free_unpacked(*pmessage, allocator); + } + *pmessage = subm; + if (subm == NULL || !merge_successful) + return FALSE; + return TRUE; + } + } + return FALSE; +} + +static protobuf_c_boolean +parse_oneof_member (ScannedMember *scanned_member, + void *member, + ProtobufCMessage *message, + ProtobufCAllocator *allocator) +{ + uint32_t *oneof_case = STRUCT_MEMBER_PTR(uint32_t, message, + scanned_member->field->quantifier_offset); + + /* If we have already parsed a member of this oneof, free it. */ + if (*oneof_case != 0) { + /* lookup field */ + int field_index = + int_range_lookup(message->descriptor->n_field_ranges, + message->descriptor->field_ranges, + *oneof_case); + const ProtobufCFieldDescriptor *old_field = + message->descriptor->fields + field_index; + size_t el_size; + + switch (old_field->type) { + case PROTOBUF_C_TYPE_STRING: { + char **pstr = member; + const char *def = old_field->default_value; + if (*pstr != NULL && *pstr != def) + do_free(allocator, *pstr); + break; + } + case PROTOBUF_C_TYPE_BYTES: { + ProtobufCBinaryData *bd = member; + const ProtobufCBinaryData *def_bd = old_field->default_value; + if (bd->data != NULL && + (def_bd == NULL || bd->data != def_bd->data)) + { + do_free(allocator, bd->data); + } + break; + } + case PROTOBUF_C_TYPE_MESSAGE: { + ProtobufCMessage **pmessage = member; + const ProtobufCMessage *def_mess = old_field->default_value; + if (*pmessage != NULL && *pmessage != def_mess) + protobuf_c_message_free_unpacked(*pmessage, allocator); + break; + } + default: + break; + } + + el_size = sizeof_elt_in_repeated_array(old_field->type); + memset (member, 0, el_size); + } + if (!parse_required_member (scanned_member, member, allocator, TRUE)) + return FALSE; + + *oneof_case = scanned_member->tag; + return TRUE; +} + + +static protobuf_c_boolean +parse_optional_member(ScannedMember *scanned_member, + void *member, + ProtobufCMessage *message, + ProtobufCAllocator *allocator) +{ + if (!parse_required_member(scanned_member, member, allocator, TRUE)) + return FALSE; + if (scanned_member->field->quantifier_offset != 0) + STRUCT_MEMBER(protobuf_c_boolean, + message, + scanned_member->field->quantifier_offset) = TRUE; + return TRUE; +} + +static protobuf_c_boolean +parse_repeated_member(ScannedMember *scanned_member, + void *member, + ProtobufCMessage *message, + ProtobufCAllocator *allocator) +{ + const ProtobufCFieldDescriptor *field = scanned_member->field; + size_t *p_n = STRUCT_MEMBER_PTR(size_t, message, field->quantifier_offset); + size_t siz = sizeof_elt_in_repeated_array(field->type); + char *array = *(char **) member; + + if (!parse_required_member(scanned_member, array + siz * (*p_n), + allocator, FALSE)) + { + return FALSE; + } + *p_n += 1; + return TRUE; +} + +static unsigned +scan_varint(unsigned len, const uint8_t *data) +{ + unsigned i; + if (len > 10) + len = 10; + for (i = 0; i < len; i++) + if ((data[i] & 0x80) == 0) + break; + if (i == len) + return 0; + return i + 1; +} + +static protobuf_c_boolean +parse_packed_repeated_member(ScannedMember *scanned_member, + void *member, + ProtobufCMessage *message) +{ + const ProtobufCFieldDescriptor *field = scanned_member->field; + size_t *p_n = STRUCT_MEMBER_PTR(size_t, message, field->quantifier_offset); + size_t siz = sizeof_elt_in_repeated_array(field->type); + void *array = *(char **) member + siz * (*p_n); + const uint8_t *at = scanned_member->data + scanned_member->length_prefix_len; + size_t rem = scanned_member->len - scanned_member->length_prefix_len; + size_t count = 0; + unsigned i; + + switch (field->type) { + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + count = (scanned_member->len - scanned_member->length_prefix_len) / 4; +#if !defined(WORDS_BIGENDIAN) + goto no_unpacking_needed; +#else + for (i = 0; i < count; i++) { + ((uint32_t *) array)[i] = parse_fixed_uint32(at); + at += 4; + } + break; +#endif + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + count = (scanned_member->len - scanned_member->length_prefix_len) / 8; +#if !defined(WORDS_BIGENDIAN) + goto no_unpacking_needed; +#else + for (i = 0; i < count; i++) { + ((uint64_t *) array)[i] = parse_fixed_uint64(at); + at += 8; + } + break; +#endif + case PROTOBUF_C_TYPE_INT32: + while (rem > 0) { + unsigned s = scan_varint(rem, at); + if (s == 0) { + PROTOBUF_C_UNPACK_ERROR("bad packed-repeated int32 value"); + return FALSE; + } + ((int32_t *) array)[count++] = parse_int32(s, at); + at += s; + rem -= s; + } + break; + case PROTOBUF_C_TYPE_SINT32: + while (rem > 0) { + unsigned s = scan_varint(rem, at); + if (s == 0) { + PROTOBUF_C_UNPACK_ERROR("bad packed-repeated sint32 value"); + return FALSE; + } + ((int32_t *) array)[count++] = unzigzag32(parse_uint32(s, at)); + at += s; + rem -= s; + } + break; + case PROTOBUF_C_TYPE_ENUM: + case PROTOBUF_C_TYPE_UINT32: + while (rem > 0) { + unsigned s = scan_varint(rem, at); + if (s == 0) { + PROTOBUF_C_UNPACK_ERROR("bad packed-repeated enum or uint32 value"); + return FALSE; + } + ((uint32_t *) array)[count++] = parse_uint32(s, at); + at += s; + rem -= s; + } + break; + + case PROTOBUF_C_TYPE_SINT64: + while (rem > 0) { + unsigned s = scan_varint(rem, at); + if (s == 0) { + PROTOBUF_C_UNPACK_ERROR("bad packed-repeated sint64 value"); + return FALSE; + } + ((int64_t *) array)[count++] = unzigzag64(parse_uint64(s, at)); + at += s; + rem -= s; + } + break; + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_UINT64: + while (rem > 0) { + unsigned s = scan_varint(rem, at); + if (s == 0) { + PROTOBUF_C_UNPACK_ERROR("bad packed-repeated int64/uint64 value"); + return FALSE; + } + ((int64_t *) array)[count++] = parse_uint64(s, at); + at += s; + rem -= s; + } + break; + case PROTOBUF_C_TYPE_BOOL: + count = rem; + for (i = 0; i < count; i++) { + if (at[i] > 1) { + PROTOBUF_C_UNPACK_ERROR("bad packed-repeated boolean value"); + return FALSE; + } + ((protobuf_c_boolean *) array)[i] = at[i]; + } + break; + default: + PROTOBUF_C__ASSERT_NOT_REACHED(); + } + *p_n += count; + return TRUE; + +#if !defined(WORDS_BIGENDIAN) +no_unpacking_needed: + memcpy(array, at, count * siz); + *p_n += count; + return TRUE; +#endif +} + +static protobuf_c_boolean +is_packable_type(ProtobufCType type) +{ + return + type != PROTOBUF_C_TYPE_STRING && + type != PROTOBUF_C_TYPE_BYTES && + type != PROTOBUF_C_TYPE_MESSAGE; +} + +static protobuf_c_boolean +parse_member(ScannedMember *scanned_member, + ProtobufCMessage *message, + ProtobufCAllocator *allocator) +{ + const ProtobufCFieldDescriptor *field = scanned_member->field; + void *member; + + if (field == NULL) { + ProtobufCMessageUnknownField *ufield = + message->unknown_fields + + (message->n_unknown_fields++); + ufield->tag = scanned_member->tag; + ufield->wire_type = scanned_member->wire_type; + ufield->len = scanned_member->len; + ufield->data = do_alloc(allocator, scanned_member->len); + if (ufield->data == NULL) + return FALSE; + memcpy(ufield->data, scanned_member->data, ufield->len); + return TRUE; + } + member = (char *) message + field->offset; + switch (field->label) { + case PROTOBUF_C_LABEL_REQUIRED: + return parse_required_member(scanned_member, member, + allocator, TRUE); + case PROTOBUF_C_LABEL_OPTIONAL: + if (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_ONEOF)) { + return parse_oneof_member(scanned_member, member, + message, allocator); + } else { + return parse_optional_member(scanned_member, member, + message, allocator); + } + case PROTOBUF_C_LABEL_REPEATED: + if (scanned_member->wire_type == + PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED && + (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED) || + is_packable_type(field->type))) + { + return parse_packed_repeated_member(scanned_member, + member, message); + } else { + return parse_repeated_member(scanned_member, + member, message, + allocator); + } + } + PROTOBUF_C__ASSERT_NOT_REACHED(); + return 0; +} + +/** + * Initialise messages generated by old code. + * + * This function is used if desc->message_init == NULL (which occurs + * for old code, and which would be useful to support allocating + * descriptors dynamically). + */ +static void +message_init_generic(const ProtobufCMessageDescriptor *desc, + ProtobufCMessage *message) +{ + unsigned i; + + memset(message, 0, desc->sizeof_message); + message->descriptor = desc; + for (i = 0; i < desc->n_fields; i++) { + if (desc->fields[i].default_value != NULL && + desc->fields[i].label != PROTOBUF_C_LABEL_REPEATED) + { + void *field = + STRUCT_MEMBER_P(message, desc->fields[i].offset); + const void *dv = desc->fields[i].default_value; + + switch (desc->fields[i].type) { + case PROTOBUF_C_TYPE_INT32: + case PROTOBUF_C_TYPE_SINT32: + case PROTOBUF_C_TYPE_SFIXED32: + case PROTOBUF_C_TYPE_UINT32: + case PROTOBUF_C_TYPE_FIXED32: + case PROTOBUF_C_TYPE_FLOAT: + case PROTOBUF_C_TYPE_ENUM: + memcpy(field, dv, 4); + break; + case PROTOBUF_C_TYPE_INT64: + case PROTOBUF_C_TYPE_SINT64: + case PROTOBUF_C_TYPE_SFIXED64: + case PROTOBUF_C_TYPE_UINT64: + case PROTOBUF_C_TYPE_FIXED64: + case PROTOBUF_C_TYPE_DOUBLE: + memcpy(field, dv, 8); + break; + case PROTOBUF_C_TYPE_BOOL: + memcpy(field, dv, sizeof(protobuf_c_boolean)); + break; + case PROTOBUF_C_TYPE_BYTES: + memcpy(field, dv, sizeof(ProtobufCBinaryData)); + break; + + case PROTOBUF_C_TYPE_STRING: + case PROTOBUF_C_TYPE_MESSAGE: + /* + * The next line essentially implements a cast + * from const, which is totally unavoidable. + */ + *(const void **) field = dv; + break; + } + } + } +} + +/**@}*/ + +/* + * ScannedMember slabs (an unpacking implementation detail). Before doing real + * unpacking, we first scan through the elements to see how many there are (for + * repeated fields), and which field to use (for non-repeated fields given + * twice). + * + * In order to avoid allocations for small messages, we keep a stack-allocated + * slab of ScannedMembers of size FIRST_SCANNED_MEMBER_SLAB_SIZE (16). After we + * fill that up, we allocate each slab twice as large as the previous one. + */ +#define FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2 4 + +/* + * The number of slabs, including the stack-allocated ones; choose the number so + * that we would overflow if we needed a slab larger than provided. + */ +#define MAX_SCANNED_MEMBER_SLAB \ + (sizeof(unsigned int)*8 - 1 \ + - BOUND_SIZEOF_SCANNED_MEMBER_LOG2 \ + - FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2) + +#define REQUIRED_FIELD_BITMAP_SET(index) \ + (required_fields_bitmap[(index)/8] |= (1<<((index)%8))) + +#define REQUIRED_FIELD_BITMAP_IS_SET(index) \ + (required_fields_bitmap[(index)/8] & (1<<((index)%8))) + +ProtobufCMessage * +protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc, + ProtobufCAllocator *allocator, + size_t len, const uint8_t *data) +{ + ProtobufCMessage *rv; + size_t rem = len; + const uint8_t *at = data; + const ProtobufCFieldDescriptor *last_field = desc->fields + 0; + ScannedMember first_member_slab[1 << + FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2]; + + /* + * scanned_member_slabs[i] is an array of arrays of ScannedMember. + * The first slab (scanned_member_slabs[0] is just a pointer to + * first_member_slab), above. All subsequent slabs will be allocated + * using the allocator. + */ + ScannedMember *scanned_member_slabs[MAX_SCANNED_MEMBER_SLAB + 1]; + unsigned which_slab = 0; /* the slab we are currently populating */ + unsigned in_slab_index = 0; /* number of members in the slab */ + size_t n_unknown = 0; + unsigned f; + unsigned j; + unsigned i_slab; + unsigned last_field_index = 0; + unsigned required_fields_bitmap_len; + unsigned char required_fields_bitmap_stack[16]; + unsigned char *required_fields_bitmap = required_fields_bitmap_stack; + protobuf_c_boolean required_fields_bitmap_alloced = FALSE; + + ASSERT_IS_MESSAGE_DESCRIPTOR(desc); + + if (allocator == NULL) + allocator = &protobuf_c__allocator; + + rv = do_alloc(allocator, desc->sizeof_message); + if (!rv) + return (NULL); + scanned_member_slabs[0] = first_member_slab; + + required_fields_bitmap_len = (desc->n_fields + 7) / 8; + if (required_fields_bitmap_len > sizeof(required_fields_bitmap_stack)) { + required_fields_bitmap = do_alloc(allocator, required_fields_bitmap_len); + if (!required_fields_bitmap) { + do_free(allocator, rv); + return (NULL); + } + required_fields_bitmap_alloced = TRUE; + } + memset(required_fields_bitmap, 0, required_fields_bitmap_len); + + /* + * Generated code always defines "message_init". However, we provide a + * fallback for (1) users of old protobuf-c generated-code that do not + * provide the function, and (2) descriptors constructed from some other + * source (most likely, direct construction from the .proto file). + */ + if (desc->message_init != NULL) + protobuf_c_message_init(desc, rv); + else + message_init_generic(desc, rv); + + while (rem > 0) { + uint32_t tag; + ProtobufCWireType wire_type; + size_t used = parse_tag_and_wiretype(rem, at, &tag, &wire_type); + const ProtobufCFieldDescriptor *field; + ScannedMember tmp; + + if (used == 0) { + PROTOBUF_C_UNPACK_ERROR("error parsing tag/wiretype at offset %u", + (unsigned) (at - data)); + goto error_cleanup_during_scan; + } + /* + * \todo Consider optimizing for field[1].id == tag, if field[1] + * exists! + */ + if (last_field == NULL || last_field->id != tag) { + /* lookup field */ + int field_index = + int_range_lookup(desc->n_field_ranges, + desc->field_ranges, + tag); + if (field_index < 0) { + field = NULL; + n_unknown++; + } else { + field = desc->fields + field_index; + last_field = field; + last_field_index = field_index; + } + } else { + field = last_field; + } + + if (field != NULL && field->label == PROTOBUF_C_LABEL_REQUIRED) + REQUIRED_FIELD_BITMAP_SET(last_field_index); + + at += used; + rem -= used; + tmp.tag = tag; + tmp.wire_type = wire_type; + tmp.field = field; + tmp.data = at; + tmp.length_prefix_len = 0; + + switch (wire_type) { + case PROTOBUF_C_WIRE_TYPE_VARINT: { + unsigned max_len = rem < 10 ? rem : 10; + unsigned i; + + for (i = 0; i < max_len; i++) + if ((at[i] & 0x80) == 0) + break; + if (i == max_len) { + PROTOBUF_C_UNPACK_ERROR("unterminated varint at offset %u", + (unsigned) (at - data)); + goto error_cleanup_during_scan; + } + tmp.len = i + 1; + break; + } + case PROTOBUF_C_WIRE_TYPE_64BIT: + if (rem < 8) { + PROTOBUF_C_UNPACK_ERROR("too short after 64bit wiretype at offset %u", + (unsigned) (at - data)); + goto error_cleanup_during_scan; + } + tmp.len = 8; + break; + case PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED: { + size_t pref_len; + + tmp.len = scan_length_prefixed_data(rem, at, &pref_len); + if (tmp.len == 0) { + /* NOTE: scan_length_prefixed_data calls UNPACK_ERROR */ + goto error_cleanup_during_scan; + } + tmp.length_prefix_len = pref_len; + break; + } + case PROTOBUF_C_WIRE_TYPE_32BIT: + if (rem < 4) { + PROTOBUF_C_UNPACK_ERROR("too short after 32bit wiretype at offset %u", + (unsigned) (at - data)); + goto error_cleanup_during_scan; + } + tmp.len = 4; + break; + default: + PROTOBUF_C_UNPACK_ERROR("unsupported tag %u at offset %u", + wire_type, (unsigned) (at - data)); + goto error_cleanup_during_scan; + } + + if (in_slab_index == (1U << + (which_slab + FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2))) + { + size_t size; + + in_slab_index = 0; + if (which_slab == MAX_SCANNED_MEMBER_SLAB) { + PROTOBUF_C_UNPACK_ERROR("too many fields"); + goto error_cleanup_during_scan; + } + which_slab++; + size = sizeof(ScannedMember) + << (which_slab + FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2); + scanned_member_slabs[which_slab] = do_alloc(allocator, size); + if (scanned_member_slabs[which_slab] == NULL) + goto error_cleanup_during_scan; + } + scanned_member_slabs[which_slab][in_slab_index++] = tmp; + + if (field != NULL && field->label == PROTOBUF_C_LABEL_REPEATED) { + size_t *n = STRUCT_MEMBER_PTR(size_t, rv, + field->quantifier_offset); + if (wire_type == PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED && + (0 != (field->flags & PROTOBUF_C_FIELD_FLAG_PACKED) || + is_packable_type(field->type))) + { + size_t count; + if (!count_packed_elements(field->type, + tmp.len - + tmp.length_prefix_len, + tmp.data + + tmp.length_prefix_len, + &count)) + { + PROTOBUF_C_UNPACK_ERROR("counting packed elements"); + goto error_cleanup_during_scan; + } + *n += count; + } else { + *n += 1; + } + } + + at += tmp.len; + rem -= tmp.len; + } + + /* allocate space for repeated fields, also check that all required fields have been set */ + for (f = 0; f < desc->n_fields; f++) { + const ProtobufCFieldDescriptor *field = desc->fields + f; + if (field->label == PROTOBUF_C_LABEL_REPEATED) { + size_t siz = + sizeof_elt_in_repeated_array(field->type); + size_t *n_ptr = + STRUCT_MEMBER_PTR(size_t, rv, + field->quantifier_offset); + if (*n_ptr != 0) { + void *a = 0; + unsigned n = *n_ptr; + *n_ptr = 0; + assert(rv->descriptor != NULL); +#define CLEAR_REMAINING_N_PTRS() \ + for(f++;f < desc->n_fields; f++) \ + { \ + field = desc->fields + f; \ + if (field->label == PROTOBUF_C_LABEL_REPEATED) \ + STRUCT_MEMBER (size_t, rv, field->quantifier_offset) = 0; \ + } + a = do_alloc(allocator, siz * n); + if (!a) { + CLEAR_REMAINING_N_PTRS(); + goto error_cleanup; + } + STRUCT_MEMBER(void *, rv, field->offset) = a; + } + } else if (field->label == PROTOBUF_C_LABEL_REQUIRED) { + if (field->default_value == NULL && + !REQUIRED_FIELD_BITMAP_IS_SET(f)) + { + CLEAR_REMAINING_N_PTRS(); + PROTOBUF_C_UNPACK_ERROR("message '%s': missing required field '%s'", + desc->name, field->name); + goto error_cleanup; + } + } + } +#undef CLEAR_REMAINING_N_PTRS + + /* allocate space for unknown fields */ + if (n_unknown) { + rv->unknown_fields = do_alloc(allocator, + n_unknown * sizeof(ProtobufCMessageUnknownField)); + if (rv->unknown_fields == NULL) + goto error_cleanup; + } + + /* do real parsing */ + for (i_slab = 0; i_slab <= which_slab; i_slab++) { + unsigned max = (i_slab == which_slab) ? + in_slab_index : (1U << (i_slab + 4)); + ScannedMember *slab = scanned_member_slabs[i_slab]; + unsigned j; + + for (j = 0; j < max; j++) { + if (!parse_member(slab + j, rv, allocator)) { + PROTOBUF_C_UNPACK_ERROR("error parsing member %s of %s", + slab->field ? slab->field->name : "*unknown-field*", + desc->name); + goto error_cleanup; + } + } + } + + /* cleanup */ + for (j = 1; j <= which_slab; j++) + do_free(allocator, scanned_member_slabs[j]); + if (required_fields_bitmap_alloced) + do_free(allocator, required_fields_bitmap); + return rv; + +error_cleanup: + protobuf_c_message_free_unpacked(rv, allocator); + for (j = 1; j <= which_slab; j++) + do_free(allocator, scanned_member_slabs[j]); + if (required_fields_bitmap_alloced) + do_free(allocator, required_fields_bitmap); + return NULL; + +error_cleanup_during_scan: + do_free(allocator, rv); + for (j = 1; j <= which_slab; j++) + do_free(allocator, scanned_member_slabs[j]); + if (required_fields_bitmap_alloced) + do_free(allocator, required_fields_bitmap); + return NULL; +} + +void +protobuf_c_message_free_unpacked(ProtobufCMessage *message, + ProtobufCAllocator *allocator) +{ + const ProtobufCMessageDescriptor *desc; + unsigned f; + + if (message == NULL) + return; + + desc = message->descriptor; + + ASSERT_IS_MESSAGE(message); + + if (allocator == NULL) + allocator = &protobuf_c__allocator; + message->descriptor = NULL; + for (f = 0; f < desc->n_fields; f++) { + if (0 != (desc->fields[f].flags & PROTOBUF_C_FIELD_FLAG_ONEOF) && + desc->fields[f].id != + STRUCT_MEMBER(uint32_t, message, desc->fields[f].quantifier_offset)) + { + /* This is not the selected oneof, skip it */ + continue; + } + + if (desc->fields[f].label == PROTOBUF_C_LABEL_REPEATED) { + size_t n = STRUCT_MEMBER(size_t, + message, + desc->fields[f].quantifier_offset); + void *arr = STRUCT_MEMBER(void *, + message, + desc->fields[f].offset); + + if (arr != NULL) { + if (desc->fields[f].type == PROTOBUF_C_TYPE_STRING) { + unsigned i; + for (i = 0; i < n; i++) + do_free(allocator, ((char **) arr)[i]); + } else if (desc->fields[f].type == PROTOBUF_C_TYPE_BYTES) { + unsigned i; + for (i = 0; i < n; i++) + do_free(allocator, ((ProtobufCBinaryData *) arr)[i].data); + } else if (desc->fields[f].type == PROTOBUF_C_TYPE_MESSAGE) { + unsigned i; + for (i = 0; i < n; i++) + protobuf_c_message_free_unpacked( + ((ProtobufCMessage **) arr)[i], + allocator + ); + } + do_free(allocator, arr); + } + } else if (desc->fields[f].type == PROTOBUF_C_TYPE_STRING) { + char *str = STRUCT_MEMBER(char *, message, + desc->fields[f].offset); + + if (str && str != desc->fields[f].default_value) + do_free(allocator, str); + } else if (desc->fields[f].type == PROTOBUF_C_TYPE_BYTES) { + void *data = STRUCT_MEMBER(ProtobufCBinaryData, message, + desc->fields[f].offset).data; + const ProtobufCBinaryData *default_bd; + + default_bd = desc->fields[f].default_value; + if (data != NULL && + (default_bd == NULL || + default_bd->data != data)) + { + do_free(allocator, data); + } + } else if (desc->fields[f].type == PROTOBUF_C_TYPE_MESSAGE) { + ProtobufCMessage *sm; + + sm = STRUCT_MEMBER(ProtobufCMessage *, message, + desc->fields[f].offset); + if (sm && sm != desc->fields[f].default_value) + protobuf_c_message_free_unpacked(sm, allocator); + } + } + + for (f = 0; f < message->n_unknown_fields; f++) + do_free(allocator, message->unknown_fields[f].data); + if (message->unknown_fields != NULL) + do_free(allocator, message->unknown_fields); + + do_free(allocator, message); +} + +void +protobuf_c_message_init(const ProtobufCMessageDescriptor * descriptor, + void *message) +{ + descriptor->message_init((ProtobufCMessage *) (message)); +} + +protobuf_c_boolean +protobuf_c_message_check(const ProtobufCMessage *message) +{ + unsigned i; + if (!message || + !message->descriptor || + message->descriptor->magic != PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC) + { + return FALSE; + } + + for (i = 0; i < message->descriptor->n_fields; i++) { + const ProtobufCFieldDescriptor *f = message->descriptor->fields + i; + ProtobufCType type = f->type; + ProtobufCLabel label = f->label; + void *field = STRUCT_MEMBER_P (message, f->offset); + + if (label == PROTOBUF_C_LABEL_REPEATED) { + size_t *quantity = STRUCT_MEMBER_P (message, f->quantifier_offset); + + if (*quantity > 0 && *(void **) field == NULL) { + return FALSE; + } + + if (type == PROTOBUF_C_TYPE_MESSAGE) { + ProtobufCMessage **submessage = *(ProtobufCMessage ***) field; + unsigned j; + for (j = 0; j < *quantity; j++) { + if (!protobuf_c_message_check(submessage[j])) + return FALSE; + } + } else if (type == PROTOBUF_C_TYPE_STRING) { + char **string = *(char ***) field; + unsigned j; + for (j = 0; j < *quantity; j++) { + if (!string[j]) + return FALSE; + } + } else if (type == PROTOBUF_C_TYPE_BYTES) { + ProtobufCBinaryData *bd = *(ProtobufCBinaryData **) field; + unsigned j; + for (j = 0; j < *quantity; j++) { + if (bd[j].len > 0 && bd[j].data == NULL) + return FALSE; + } + } + + } else { /* PROTOBUF_C_LABEL_REQUIRED or PROTOBUF_C_LABEL_OPTIONAL */ + + if (type == PROTOBUF_C_TYPE_MESSAGE) { + ProtobufCMessage *submessage = *(ProtobufCMessage **) field; + if (label == PROTOBUF_C_LABEL_REQUIRED || submessage != NULL) { + if (!protobuf_c_message_check(submessage)) + return FALSE; + } + } else if (type == PROTOBUF_C_TYPE_STRING) { + char *string = *(char **) field; + if (label == PROTOBUF_C_LABEL_REQUIRED && string == NULL) + return FALSE; + } else if (type == PROTOBUF_C_TYPE_BYTES) { + protobuf_c_boolean *has = STRUCT_MEMBER_P (message, f->quantifier_offset); + ProtobufCBinaryData *bd = field; + if (label == PROTOBUF_C_LABEL_REQUIRED || *has == TRUE) { + if (bd->len > 0 && bd->data == NULL) + return FALSE; + } + } + } + } + + return TRUE; +} + +/* === services === */ + +typedef void (*GenericHandler) (void *service, + const ProtobufCMessage *input, + ProtobufCClosure closure, + void *closure_data); +void +protobuf_c_service_invoke_internal(ProtobufCService *service, + unsigned method_index, + const ProtobufCMessage *input, + ProtobufCClosure closure, + void *closure_data) +{ + GenericHandler *handlers; + GenericHandler handler; + + /* + * Verify that method_index is within range. If this fails, you are + * likely invoking a newly added method on an old service. (Although + * other memory corruption bugs can cause this assertion too.) + */ + assert(method_index < service->descriptor->n_methods); + + /* + * Get the array of virtual methods (which are enumerated by the + * generated code). + */ + handlers = (GenericHandler *) (service + 1); + + /* + * Get our method and invoke it. + * \todo Seems like handler == NULL is a situation that needs handling. + */ + handler = handlers[method_index]; + (*handler)(service, input, closure, closure_data); +} + +void +protobuf_c_service_generated_init(ProtobufCService *service, + const ProtobufCServiceDescriptor *descriptor, + ProtobufCServiceDestroy destroy) +{ + ASSERT_IS_SERVICE_DESCRIPTOR(descriptor); + service->descriptor = descriptor; + service->destroy = destroy; + service->invoke = protobuf_c_service_invoke_internal; + memset(service + 1, 0, descriptor->n_methods * sizeof(GenericHandler)); +} + +void protobuf_c_service_destroy(ProtobufCService *service) +{ + service->destroy(service); +} + +/* --- querying the descriptors --- */ + +const ProtobufCEnumValue * +protobuf_c_enum_descriptor_get_value_by_name(const ProtobufCEnumDescriptor *desc, + const char *name) +{ + unsigned start = 0; + unsigned count = desc->n_value_names; + + while (count > 1) { + unsigned mid = start + count / 2; + int rv = strcmp(desc->values_by_name[mid].name, name); + if (rv == 0) + return desc->values + desc->values_by_name[mid].index; + else if (rv < 0) { + count = start + count - (mid + 1); + start = mid + 1; + } else + count = mid - start; + } + if (count == 0) + return NULL; + if (strcmp(desc->values_by_name[start].name, name) == 0) + return desc->values + desc->values_by_name[start].index; + return NULL; +} + +const ProtobufCEnumValue * +protobuf_c_enum_descriptor_get_value(const ProtobufCEnumDescriptor *desc, + int value) +{ + int rv = int_range_lookup(desc->n_value_ranges, desc->value_ranges, value); + if (rv < 0) + return NULL; + return desc->values + rv; +} + +const ProtobufCFieldDescriptor * +protobuf_c_message_descriptor_get_field_by_name(const ProtobufCMessageDescriptor *desc, + const char *name) +{ + unsigned start = 0; + unsigned count = desc->n_fields; + const ProtobufCFieldDescriptor *field; + + while (count > 1) { + unsigned mid = start + count / 2; + int rv; + field = desc->fields + desc->fields_sorted_by_name[mid]; + rv = strcmp(field->name, name); + if (rv == 0) + return field; + else if (rv < 0) { + count = start + count - (mid + 1); + start = mid + 1; + } else + count = mid - start; + } + if (count == 0) + return NULL; + field = desc->fields + desc->fields_sorted_by_name[start]; + if (strcmp(field->name, name) == 0) + return field; + return NULL; +} + +const ProtobufCFieldDescriptor * +protobuf_c_message_descriptor_get_field(const ProtobufCMessageDescriptor *desc, + unsigned value) +{ + int rv = int_range_lookup(desc->n_field_ranges,desc->field_ranges, value); + if (rv < 0) + return NULL; + return desc->fields + rv; +} + +const ProtobufCMethodDescriptor * +protobuf_c_service_descriptor_get_method_by_name(const ProtobufCServiceDescriptor *desc, + const char *name) +{ + unsigned start = 0; + unsigned count = desc->n_methods; + + while (count > 1) { + unsigned mid = start + count / 2; + unsigned mid_index = desc->method_indices_by_name[mid]; + const char *mid_name = desc->methods[mid_index].name; + int rv = strcmp(mid_name, name); + + if (rv == 0) + return desc->methods + desc->method_indices_by_name[mid]; + if (rv < 0) { + count = start + count - (mid + 1); + start = mid + 1; + } else { + count = mid - start; + } + } + if (count == 0) + return NULL; + if (strcmp(desc->methods[desc->method_indices_by_name[start]].name, name) == 0) + return desc->methods + desc->method_indices_by_name[start]; + return NULL; +} diff --git a/Sources/libsignal/protobuf-c/protobuf-c.h b/Sources/libsignal/protobuf-c/protobuf-c.h new file mode 100755 index 0000000..705a1f7 --- /dev/null +++ b/Sources/libsignal/protobuf-c/protobuf-c.h @@ -0,0 +1,1097 @@ +/* + * Copyright (c) 2008-2014, Dave Benson and the protobuf-c authors. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/*! \file + * \mainpage Introduction + * + * This is [protobuf-c], a C implementation of [Protocol Buffers]. + * + * This file defines the public API for the `libprotobuf-c` support library. + * This API includes interfaces that can be used directly by client code as well + * as the interfaces used by the code generated by the `protoc-c` compiler. + * + * The `libprotobuf-c` support library performs the actual serialization and + * deserialization of Protocol Buffers messages. It interacts with structures, + * definitions, and metadata generated by the `protoc-c` compiler from .proto + * files. + * + * \authors Dave Benson and the `protobuf-c` authors. + * + * \copyright 2008-2014. Licensed under the terms of the [BSD-2-Clause] license. + * + * [protobuf-c]: https://github.com/protobuf-c/protobuf-c + * [Protocol Buffers]: https://developers.google.com/protocol-buffers/ + * [BSD-2-Clause]: http://opensource.org/licenses/BSD-2-Clause + * + * \page gencode Generated Code + * + * For each enum, we generate a C enum. For each message, we generate a C + * structure which can be cast to a `ProtobufCMessage`. + * + * For each enum and message, we generate a descriptor object that allows us to + * implement a kind of reflection on the structures. + * + * First, some naming conventions: + * + * - The name of the type for enums and messages and services is camel case + * (meaning WordsAreCrammedTogether) except that double underscores are used + * to delimit scopes. For example, the following `.proto` file: + * +~~~{.proto} + package foo.bar; + message BazBah { + optional int32 val = 1; + } +~~~ + * + * would generate a C type `Foo__Bar__BazBah`. + * + * - Identifiers for functions and globals are all lowercase, with camel case + * words separated by single underscores. For example, one of the function + * prototypes generated by `protoc-c` for the above example: + * +~~~{.c} +Foo__Bar__BazBah * + foo__bar__baz_bah__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +~~~ + * + * - Identifiers for enum values contain an uppercase prefix which embeds the + * package name and the enum type name. + * + * - A double underscore is used to separate further components of identifier + * names. + * + * For example, in the name of the unpack function above, the package name + * `foo.bar` has become `foo__bar`, the message name BazBah has become + * `baz_bah`, and the method name is `unpack`. These are all joined with double + * underscores to form the C identifier `foo__bar__baz_bah__unpack`. + * + * We also generate descriptor objects for messages and enums. These are + * declared in the `.pb-c.h` files: + * +~~~{.c} +extern const ProtobufCMessageDescriptor foo__bar__baz_bah__descriptor; +~~~ + * + * The message structures all begin with `ProtobufCMessageDescriptor *` which is + * sufficient to allow them to be cast to `ProtobufCMessage`. + * + * For each message defined in a `.proto` file, we generate a number of + * functions and macros. Each function name contains a prefix based on the + * package name and message name in order to make it a unique C identifier. + * + * - `INIT`. Statically initializes a message object, initializing its + * descriptor and setting its fields to default values. Uninitialized + * messages cannot be processed by the protobuf-c library. + * +~~~{.c} +#define FOO__BAR__BAZ_BAH__INIT \ + { PROTOBUF_C_MESSAGE_INIT (&foo__bar__baz_bah__descriptor), 0 } +~~~ + * - `init()`. Initializes a message object, initializing its descriptor and + * setting its fields to default values. Uninitialized messages cannot be + * processed by the protobuf-c library. + * +~~~{.c} +void foo__bar__baz_bah__init + (Foo__Bar__BazBah *message); +~~~ + * - `unpack()`. Unpacks data for a particular message format. Note that the + * `allocator` parameter is usually `NULL` to indicate that the system's + * `malloc()` and `free()` functions should be used for dynamically allocating + * memory. + * +~~~{.c} +Foo__Bar__BazBah * + foo__bar__baz_bah__unpack + (ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +~~~ + * + * - `free_unpacked()`. Frees a message object obtained with the `unpack()` + * method. + * +~~~{.c} +void foo__bar__baz_bah__free_unpacked + (Foo__Bar__BazBah *message, + ProtobufCAllocator *allocator); +~~~ + * + * - `get_packed_size()`. Calculates the length in bytes of the serialized + * representation of the message object. + * +~~~{.c} +size_t foo__bar__baz_bah__get_packed_size + (const Foo__Bar__BazBah *message); +~~~ + * + * - `pack()`. Pack a message object into a preallocated buffer. Assumes that + * the buffer is large enough. (Use `get_packed_size()` first.) + * +~~~{.c} +size_t foo__bar__baz_bah__pack + (const Foo__Bar__BazBah *message, + uint8_t *out); +~~~ + * + * - `pack_to_buffer()`. Packs a message into a "virtual buffer". This is an + * object which defines an "append bytes" callback to consume data as it is + * serialized. + * +~~~{.c} +size_t foo__bar__baz_bah__pack_to_buffer + (const Foo__Bar__BazBah *message, + ProtobufCBuffer *buffer); +~~~ + * + * \page pack Packing and unpacking messages + * + * To pack a message, first compute the packed size of the message with + * protobuf_c_message_get_packed_size(), then allocate a buffer of at least + * that size, then call protobuf_c_message_pack(). + * + * Alternatively, a message can be serialized without calculating the final size + * first. Use the protobuf_c_message_pack_to_buffer() function and provide a + * ProtobufCBuffer object which implements an "append" method that consumes + * data. + * + * To unpack a message, call the protobuf_c_message_unpack() function. The + * result can be cast to an object of the type that matches the descriptor for + * the message. + * + * The result of unpacking a message should be freed with + * protobuf_c_message_free_unpacked(). + */ + +#ifndef PROTOBUF_C_H +#define PROTOBUF_C_H + +#include +#include +#include +#include + +#ifdef __cplusplus +# define PROTOBUF_C__BEGIN_DECLS extern "C" { +# define PROTOBUF_C__END_DECLS } +#else +# define PROTOBUF_C__BEGIN_DECLS +# define PROTOBUF_C__END_DECLS +#endif + +PROTOBUF_C__BEGIN_DECLS + +#if defined(_WIN32) && defined(PROTOBUF_C_USE_SHARED_LIB) +# ifdef PROTOBUF_C_EXPORT +# define PROTOBUF_C__API __declspec(dllexport) +# else +# define PROTOBUF_C__API __declspec(dllimport) +# endif +#else +# define PROTOBUF_C__API +#endif + +#if !defined(PROTOBUF_C__NO_DEPRECATED) && \ + ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) +# define PROTOBUF_C__DEPRECATED __attribute__((__deprecated__)) +#else +# define PROTOBUF_C__DEPRECATED +#endif + +#ifndef PROTOBUF_C__FORCE_ENUM_TO_BE_INT_SIZE + #define PROTOBUF_C__FORCE_ENUM_TO_BE_INT_SIZE(enum_name) \ + , _##enum_name##_IS_INT_SIZE = INT_MAX +#endif + +#define PROTOBUF_C__SERVICE_DESCRIPTOR_MAGIC 0x14159bc3 +#define PROTOBUF_C__MESSAGE_DESCRIPTOR_MAGIC 0x28aaeef9 +#define PROTOBUF_C__ENUM_DESCRIPTOR_MAGIC 0x114315af + +/** + * \defgroup api Public API + * + * This is the public API for `libprotobuf-c`. These interfaces are stable and + * subject to Semantic Versioning guarantees. + * + * @{ + */ + +/** + * Values for the `flags` word in `ProtobufCFieldDescriptor`. + */ +typedef enum { + /** Set if the field is repeated and marked with the `packed` option. */ + PROTOBUF_C_FIELD_FLAG_PACKED = (1 << 0), + + /** Set if the field is marked with the `deprecated` option. */ + PROTOBUF_C_FIELD_FLAG_DEPRECATED = (1 << 1), + + /** Set if the field is a member of a oneof (union). */ + PROTOBUF_C_FIELD_FLAG_ONEOF = (1 << 2), +} ProtobufCFieldFlag; + +/** + * Message field rules. + * + * \see [Defining A Message Type] in the Protocol Buffers documentation. + * + * [Defining A Message Type]: + * https://developers.google.com/protocol-buffers/docs/proto#simple + */ +typedef enum { + /** A well-formed message must have exactly one of this field. */ + PROTOBUF_C_LABEL_REQUIRED, + + /** + * A well-formed message can have zero or one of this field (but not + * more than one). + */ + PROTOBUF_C_LABEL_OPTIONAL, + + /** + * This field can be repeated any number of times (including zero) in a + * well-formed message. The order of the repeated values will be + * preserved. + */ + PROTOBUF_C_LABEL_REPEATED, +} ProtobufCLabel; + +/** + * Field value types. + * + * \see [Scalar Value Types] in the Protocol Buffers documentation. + * + * [Scalar Value Types]: + * https://developers.google.com/protocol-buffers/docs/proto#scalar + */ +typedef enum { + PROTOBUF_C_TYPE_INT32, /**< int32 */ + PROTOBUF_C_TYPE_SINT32, /**< signed int32 */ + PROTOBUF_C_TYPE_SFIXED32, /**< signed int32 (4 bytes) */ + PROTOBUF_C_TYPE_INT64, /**< int64 */ + PROTOBUF_C_TYPE_SINT64, /**< signed int64 */ + PROTOBUF_C_TYPE_SFIXED64, /**< signed int64 (8 bytes) */ + PROTOBUF_C_TYPE_UINT32, /**< unsigned int32 */ + PROTOBUF_C_TYPE_FIXED32, /**< unsigned int32 (4 bytes) */ + PROTOBUF_C_TYPE_UINT64, /**< unsigned int64 */ + PROTOBUF_C_TYPE_FIXED64, /**< unsigned int64 (8 bytes) */ + PROTOBUF_C_TYPE_FLOAT, /**< float */ + PROTOBUF_C_TYPE_DOUBLE, /**< double */ + PROTOBUF_C_TYPE_BOOL, /**< boolean */ + PROTOBUF_C_TYPE_ENUM, /**< enumerated type */ + PROTOBUF_C_TYPE_STRING, /**< UTF-8 or ASCII string */ + PROTOBUF_C_TYPE_BYTES, /**< arbitrary byte sequence */ + PROTOBUF_C_TYPE_MESSAGE, /**< nested message */ +} ProtobufCType; + +/** + * Field wire types. + * + * \see [Message Structure] in the Protocol Buffers documentation. + * + * [Message Structure]: + * https://developers.google.com/protocol-buffers/docs/encoding#structure + */ +typedef enum { + PROTOBUF_C_WIRE_TYPE_VARINT = 0, + PROTOBUF_C_WIRE_TYPE_64BIT = 1, + PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED = 2, + /* "Start group" and "end group" wire types are unsupported. */ + PROTOBUF_C_WIRE_TYPE_32BIT = 5, +} ProtobufCWireType; + +struct ProtobufCAllocator; +struct ProtobufCBinaryData; +struct ProtobufCBuffer; +struct ProtobufCBufferSimple; +struct ProtobufCEnumDescriptor; +struct ProtobufCEnumValue; +struct ProtobufCEnumValueIndex; +struct ProtobufCFieldDescriptor; +struct ProtobufCIntRange; +struct ProtobufCMessage; +struct ProtobufCMessageDescriptor; +struct ProtobufCMessageUnknownField; +struct ProtobufCMethodDescriptor; +struct ProtobufCService; +struct ProtobufCServiceDescriptor; + +typedef struct ProtobufCAllocator ProtobufCAllocator; +typedef struct ProtobufCBinaryData ProtobufCBinaryData; +typedef struct ProtobufCBuffer ProtobufCBuffer; +typedef struct ProtobufCBufferSimple ProtobufCBufferSimple; +typedef struct ProtobufCEnumDescriptor ProtobufCEnumDescriptor; +typedef struct ProtobufCEnumValue ProtobufCEnumValue; +typedef struct ProtobufCEnumValueIndex ProtobufCEnumValueIndex; +typedef struct ProtobufCFieldDescriptor ProtobufCFieldDescriptor; +typedef struct ProtobufCIntRange ProtobufCIntRange; +typedef struct ProtobufCMessage ProtobufCMessage; +typedef struct ProtobufCMessageDescriptor ProtobufCMessageDescriptor; +typedef struct ProtobufCMessageUnknownField ProtobufCMessageUnknownField; +typedef struct ProtobufCMethodDescriptor ProtobufCMethodDescriptor; +typedef struct ProtobufCService ProtobufCService; +typedef struct ProtobufCServiceDescriptor ProtobufCServiceDescriptor; + +/** Boolean type. */ +typedef int protobuf_c_boolean; + +typedef void (*ProtobufCClosure)(const ProtobufCMessage *, void *closure_data); +typedef void (*ProtobufCMessageInit)(ProtobufCMessage *); +typedef void (*ProtobufCServiceDestroy)(ProtobufCService *); + +/** + * Structure for defining a custom memory allocator. + */ +struct ProtobufCAllocator { + /** Function to allocate memory. */ + void *(*alloc)(void *allocator_data, size_t size); + + /** Function to free memory. */ + void (*free)(void *allocator_data, void *pointer); + + /** Opaque pointer passed to `alloc` and `free` functions. */ + void *allocator_data; +}; + +/** + * Structure for the protobuf `bytes` scalar type. + * + * The data contained in a `ProtobufCBinaryData` is an arbitrary sequence of + * bytes. It may contain embedded `NUL` characters and is not required to be + * `NUL`-terminated. + */ +struct ProtobufCBinaryData { + size_t len; /**< Number of bytes in the `data` field. */ + uint8_t *data; /**< Data bytes. */ +}; + +/** + * Structure for defining a virtual append-only buffer. Used by + * protobuf_c_message_pack_to_buffer() to abstract the consumption of serialized + * bytes. + * + * `ProtobufCBuffer` "subclasses" may be defined on the stack. For example, to + * write to a `FILE` object: + * +~~~{.c} +typedef struct { + ProtobufCBuffer base; + FILE *fp; +} BufferAppendToFile; + +static void +my_buffer_file_append(ProtobufCBuffer *buffer, + size_t len, + const uint8_t *data) +{ + BufferAppendToFile *file_buf = (BufferAppendToFile *) buffer; + fwrite(data, len, 1, file_buf->fp); // XXX: No error handling! +} +~~~ + * + * To use this new type of ProtobufCBuffer, it could be called as follows: + * +~~~{.c} +... +BufferAppendToFile tmp = {0}; +tmp.base.append = my_buffer_file_append; +tmp.fp = fp; +protobuf_c_message_pack_to_buffer(&message, &tmp); +... +~~~ + */ +struct ProtobufCBuffer { + /** Append function. Consumes the `len` bytes stored at `data`. */ + void (*append)(ProtobufCBuffer *buffer, + size_t len, + const uint8_t *data); +}; + +/** + * Simple buffer "subclass" of `ProtobufCBuffer`. + * + * A `ProtobufCBufferSimple` object is declared on the stack and uses a + * scratch buffer provided by the user for the initial allocation. It performs + * exponential resizing, using dynamically allocated memory. A + * `ProtobufCBufferSimple` object can be created and used as follows: + * +~~~{.c} +uint8_t pad[128]; +ProtobufCBufferSimple simple = PROTOBUF_C_BUFFER_SIMPLE_INIT(pad); +ProtobufCBuffer *buffer = (ProtobufCBuffer *) &simple; +~~~ + * + * `buffer` can now be used with `protobuf_c_message_pack_to_buffer()`. Once a + * message has been serialized to a `ProtobufCBufferSimple` object, the + * serialized data bytes can be accessed from the `.data` field. + * + * To free the memory allocated by a `ProtobufCBufferSimple` object, if any, + * call PROTOBUF_C_BUFFER_SIMPLE_CLEAR() on the object, for example: + * +~~~{.c} +PROTOBUF_C_BUFFER_SIMPLE_CLEAR(&simple); +~~~ + * + * \see PROTOBUF_C_BUFFER_SIMPLE_INIT + * \see PROTOBUF_C_BUFFER_SIMPLE_CLEAR + */ +struct ProtobufCBufferSimple { + /** "Base class". */ + ProtobufCBuffer base; + /** Number of bytes allocated in `data`. */ + size_t alloced; + /** Number of bytes currently stored in `data`. */ + size_t len; + /** Data bytes. */ + uint8_t *data; + /** Whether `data` must be freed. */ + protobuf_c_boolean must_free_data; + /** Allocator to use. May be NULL to indicate the system allocator. */ + ProtobufCAllocator *allocator; +}; + +/** + * Describes an enumeration as a whole, with all of its values. + */ +struct ProtobufCEnumDescriptor { + /** Magic value checked to ensure that the API is used correctly. */ + uint32_t magic; + + /** The qualified name (e.g., "namespace.Type"). */ + const char *name; + /** The unqualified name as given in the .proto file (e.g., "Type"). */ + const char *short_name; + /** Identifier used in generated C code. */ + const char *c_name; + /** The dot-separated namespace. */ + const char *package_name; + + /** Number elements in `values`. */ + unsigned n_values; + /** Array of distinct values, sorted by numeric value. */ + const ProtobufCEnumValue *values; + + /** Number of elements in `values_by_name`. */ + unsigned n_value_names; + /** Array of named values, including aliases, sorted by name. */ + const ProtobufCEnumValueIndex *values_by_name; + + /** Number of elements in `value_ranges`. */ + unsigned n_value_ranges; + /** Value ranges, for faster lookups by numeric value. */ + const ProtobufCIntRange *value_ranges; + + /** Reserved for future use. */ + void *reserved1; + /** Reserved for future use. */ + void *reserved2; + /** Reserved for future use. */ + void *reserved3; + /** Reserved for future use. */ + void *reserved4; +}; + +/** + * Represents a single value of an enumeration. + */ +struct ProtobufCEnumValue { + /** The string identifying this value in the .proto file. */ + const char *name; + + /** The string identifying this value in generated C code. */ + const char *c_name; + + /** The numeric value assigned in the .proto file. */ + int value; +}; + +/** + * Used by `ProtobufCEnumDescriptor` to look up enum values. + */ +struct ProtobufCEnumValueIndex { + /** Name of the enum value. */ + const char *name; + /** Index into values[] array. */ + unsigned index; +}; + +/** + * Describes a single field in a message. + */ +struct ProtobufCFieldDescriptor { + /** Name of the field as given in the .proto file. */ + const char *name; + + /** Tag value of the field as given in the .proto file. */ + uint32_t id; + + /** Whether the field is `REQUIRED`, `OPTIONAL`, or `REPEATED`. */ + ProtobufCLabel label; + + /** The type of the field. */ + ProtobufCType type; + + /** + * The offset in bytes of the message's C structure's quantifier field + * (the `has_MEMBER` field for optional members or the `n_MEMBER` field + * for repeated members or the case enum for oneofs). + */ + unsigned quantifier_offset; + + /** + * The offset in bytes into the message's C structure for the member + * itself. + */ + unsigned offset; + + /** + * A type-specific descriptor. + * + * If `type` is `PROTOBUF_C_TYPE_ENUM`, then `descriptor` points to the + * corresponding `ProtobufCEnumDescriptor`. + * + * If `type` is `PROTOBUF_C_TYPE_MESSAGE`, then `descriptor` points to + * the corresponding `ProtobufCMessageDescriptor`. + * + * Otherwise this field is NULL. + */ + const void *descriptor; /* for MESSAGE and ENUM types */ + + /** The default value for this field, if defined. May be NULL. */ + const void *default_value; + + /** + * A flag word. Zero or more of the bits defined in the + * `ProtobufCFieldFlag` enum may be set. + */ + uint32_t flags; + + /** Reserved for future use. */ + unsigned reserved_flags; + /** Reserved for future use. */ + void *reserved2; + /** Reserved for future use. */ + void *reserved3; +}; + +/** + * Helper structure for optimizing int => index lookups in the case + * where the keys are mostly consecutive values, as they presumably are for + * enums and fields. + * + * The data structures requires that the values in the original array are + * sorted. + */ +struct ProtobufCIntRange { + int start_value; + unsigned orig_index; + /* + * NOTE: the number of values in the range can be inferred by looking + * at the next element's orig_index. A dummy element is added to make + * this simple. + */ +}; + +/** + * An instance of a message. + * + * `ProtobufCMessage` is a light-weight "base class" for all messages. + * + * In particular, `ProtobufCMessage` doesn't have any allocation policy + * associated with it. That's because it's common to create `ProtobufCMessage` + * objects on the stack. In fact, that's what we recommend for sending messages. + * If the object is allocated from the stack, you can't really have a memory + * leak. + * + * This means that calls to functions like protobuf_c_message_unpack() which + * return a `ProtobufCMessage` must be paired with a call to a free function, + * like protobuf_c_message_free_unpacked(). + */ +struct ProtobufCMessage { + /** The descriptor for this message type. */ + const ProtobufCMessageDescriptor *descriptor; + /** The number of elements in `unknown_fields`. */ + unsigned n_unknown_fields; + /** The fields that weren't recognized by the parser. */ + ProtobufCMessageUnknownField *unknown_fields; +}; + +/** + * Describes a message. + */ +struct ProtobufCMessageDescriptor { + /** Magic value checked to ensure that the API is used correctly. */ + uint32_t magic; + + /** The qualified name (e.g., "namespace.Type"). */ + const char *name; + /** The unqualified name as given in the .proto file (e.g., "Type"). */ + const char *short_name; + /** Identifier used in generated C code. */ + const char *c_name; + /** The dot-separated namespace. */ + const char *package_name; + + /** + * Size in bytes of the C structure representing an instance of this + * type of message. + */ + size_t sizeof_message; + + /** Number of elements in `fields`. */ + unsigned n_fields; + /** Field descriptors, sorted by tag number. */ + const ProtobufCFieldDescriptor *fields; + /** Used for looking up fields by name. */ + const unsigned *fields_sorted_by_name; + + /** Number of elements in `field_ranges`. */ + unsigned n_field_ranges; + /** Used for looking up fields by id. */ + const ProtobufCIntRange *field_ranges; + + /** Message initialisation function. */ + ProtobufCMessageInit message_init; + + /** Reserved for future use. */ + void *reserved1; + /** Reserved for future use. */ + void *reserved2; + /** Reserved for future use. */ + void *reserved3; +}; + +/** + * An unknown message field. + */ +struct ProtobufCMessageUnknownField { + /** The tag number. */ + uint32_t tag; + /** The wire type of the field. */ + ProtobufCWireType wire_type; + /** Number of bytes in `data`. */ + size_t len; + /** Field data. */ + uint8_t *data; +}; + +/** + * Method descriptor. + */ +struct ProtobufCMethodDescriptor { + /** Method name. */ + const char *name; + /** Input message descriptor. */ + const ProtobufCMessageDescriptor *input; + /** Output message descriptor. */ + const ProtobufCMessageDescriptor *output; +}; + +/** + * Service. + */ +struct ProtobufCService { + /** Service descriptor. */ + const ProtobufCServiceDescriptor *descriptor; + /** Function to invoke the service. */ + void (*invoke)(ProtobufCService *service, + unsigned method_index, + const ProtobufCMessage *input, + ProtobufCClosure closure, + void *closure_data); + /** Function to destroy the service. */ + void (*destroy)(ProtobufCService *service); +}; + +/** + * Service descriptor. + */ +struct ProtobufCServiceDescriptor { + /** Magic value checked to ensure that the API is used correctly. */ + uint32_t magic; + + /** Service name. */ + const char *name; + /** Short version of service name. */ + const char *short_name; + /** C identifier for the service name. */ + const char *c_name; + /** Package name. */ + const char *package; + /** Number of elements in `methods`. */ + unsigned n_methods; + /** Method descriptors, in the order defined in the .proto file. */ + const ProtobufCMethodDescriptor *methods; + /** Sort index of methods. */ + const unsigned *method_indices_by_name; +}; + +/** + * Get the version of the protobuf-c library. Note that this is the version of + * the library linked against, not the version of the headers compiled against. + * + * \return A string containing the version number of protobuf-c. + */ +PROTOBUF_C__API +const char * +protobuf_c_version(void); + +/** + * Get the version of the protobuf-c library. Note that this is the version of + * the library linked against, not the version of the headers compiled against. + * + * \return A 32 bit unsigned integer containing the version number of + * protobuf-c, represented in base-10 as (MAJOR*1E6) + (MINOR*1E3) + PATCH. + */ +PROTOBUF_C__API +uint32_t +protobuf_c_version_number(void); + +/** + * The version of the protobuf-c headers, represented as a string using the same + * format as protobuf_c_version(). + */ +#define PROTOBUF_C_VERSION "1.1.1" + +/** + * The version of the protobuf-c headers, represented as an integer using the + * same format as protobuf_c_version_number(). + */ +#define PROTOBUF_C_VERSION_NUMBER 1001001 + +/** + * The minimum protoc-c version which works with the current version of the + * protobuf-c headers. + */ +#define PROTOBUF_C_MIN_COMPILER_VERSION 1000000 + +/** + * Look up a `ProtobufCEnumValue` from a `ProtobufCEnumDescriptor` by name. + * + * \param desc + * The `ProtobufCEnumDescriptor` object. + * \param name + * The `name` field from the corresponding `ProtobufCEnumValue` object to + * match. + * \return + * A `ProtobufCEnumValue` object. + * \retval NULL + * If not found. + */ +PROTOBUF_C__API +const ProtobufCEnumValue * +protobuf_c_enum_descriptor_get_value_by_name( + const ProtobufCEnumDescriptor *desc, + const char *name); + +/** + * Look up a `ProtobufCEnumValue` from a `ProtobufCEnumDescriptor` by numeric + * value. + * + * \param desc + * The `ProtobufCEnumDescriptor` object. + * \param value + * The `value` field from the corresponding `ProtobufCEnumValue` object to + * match. + * + * \return + * A `ProtobufCEnumValue` object. + * \retval NULL + * If not found. + */ +PROTOBUF_C__API +const ProtobufCEnumValue * +protobuf_c_enum_descriptor_get_value( + const ProtobufCEnumDescriptor *desc, + int value); + +/** + * Look up a `ProtobufCFieldDescriptor` from a `ProtobufCMessageDescriptor` by + * the name of the field. + * + * \param desc + * The `ProtobufCMessageDescriptor` object. + * \param name + * The name of the field. + * \return + * A `ProtobufCFieldDescriptor` object. + * \retval NULL + * If not found. + */ +PROTOBUF_C__API +const ProtobufCFieldDescriptor * +protobuf_c_message_descriptor_get_field_by_name( + const ProtobufCMessageDescriptor *desc, + const char *name); + +/** + * Look up a `ProtobufCFieldDescriptor` from a `ProtobufCMessageDescriptor` by + * the tag value of the field. + * + * \param desc + * The `ProtobufCMessageDescriptor` object. + * \param value + * The tag value of the field. + * \return + * A `ProtobufCFieldDescriptor` object. + * \retval NULL + * If not found. + */ +PROTOBUF_C__API +const ProtobufCFieldDescriptor * +protobuf_c_message_descriptor_get_field( + const ProtobufCMessageDescriptor *desc, + unsigned value); + +/** + * Determine the number of bytes required to store the serialised message. + * + * \param message + * The message object to serialise. + * \return + * Number of bytes. + */ +PROTOBUF_C__API +size_t +protobuf_c_message_get_packed_size(const ProtobufCMessage *message); + +/** + * Serialise a message from its in-memory representation. + * + * This function stores the serialised bytes of the message in a pre-allocated + * buffer. + * + * \param message + * The message object to serialise. + * \param[out] out + * Buffer to store the bytes of the serialised message. This buffer must + * have enough space to store the packed message. Use + * protobuf_c_message_get_packed_size() to determine the number of bytes + * required. + * \return + * Number of bytes stored in `out`. + */ +PROTOBUF_C__API +size_t +protobuf_c_message_pack(const ProtobufCMessage *message, uint8_t *out); + +/** + * Serialise a message from its in-memory representation to a virtual buffer. + * + * This function calls the `append` method of a `ProtobufCBuffer` object to + * consume the bytes generated by the serialiser. + * + * \param message + * The message object to serialise. + * \param buffer + * The virtual buffer object. + * \return + * Number of bytes passed to the virtual buffer. + */ +PROTOBUF_C__API +size_t +protobuf_c_message_pack_to_buffer( + const ProtobufCMessage *message, + ProtobufCBuffer *buffer); + +/** + * Unpack a serialised message into an in-memory representation. + * + * \param descriptor + * The message descriptor. + * \param allocator + * `ProtobufCAllocator` to use for memory allocation. May be NULL to + * specify the default allocator. + * \param len + * Length in bytes of the serialised message. + * \param data + * Pointer to the serialised message. + * \return + * An unpacked message object. + * \retval NULL + * If an error occurred during unpacking. + */ +PROTOBUF_C__API +ProtobufCMessage * +protobuf_c_message_unpack( + const ProtobufCMessageDescriptor *descriptor, + ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); + +/** + * Free an unpacked message object. + * + * This function should be used to deallocate the memory used by a call to + * protobuf_c_message_unpack(). + * + * \param message + * The message object to free. + * \param allocator + * `ProtobufCAllocator` to use for memory deallocation. May be NULL to + * specify the default allocator. + */ +PROTOBUF_C__API +void +protobuf_c_message_free_unpacked( + ProtobufCMessage *message, + ProtobufCAllocator *allocator); + +/** + * Check the validity of a message object. + * + * Makes sure all required fields (`PROTOBUF_C_LABEL_REQUIRED`) are present. + * Recursively checks nested messages. + * + * \retval TRUE + * Message is valid. + * \retval FALSE + * Message is invalid. + */ +PROTOBUF_C__API +protobuf_c_boolean +protobuf_c_message_check(const ProtobufCMessage *); + +/** Message initialiser. */ +#define PROTOBUF_C_MESSAGE_INIT(descriptor) { descriptor, 0, NULL } + +/** + * Initialise a message object from a message descriptor. + * + * \param descriptor + * Message descriptor. + * \param message + * Allocated block of memory of size `descriptor->sizeof_message`. + */ +PROTOBUF_C__API +void +protobuf_c_message_init( + const ProtobufCMessageDescriptor *descriptor, + void *message); + +/** + * Free a service. + * + * \param service + * The service object to free. + */ +PROTOBUF_C__API +void +protobuf_c_service_destroy(ProtobufCService *service); + +/** + * Look up a `ProtobufCMethodDescriptor` by name. + * + * \param desc + * Service descriptor. + * \param name + * Name of the method. + * + * \return + * A `ProtobufCMethodDescriptor` object. + * \retval NULL + * If not found. + */ +PROTOBUF_C__API +const ProtobufCMethodDescriptor * +protobuf_c_service_descriptor_get_method_by_name( + const ProtobufCServiceDescriptor *desc, + const char *name); + +/** + * Initialise a `ProtobufCBufferSimple` object. + */ +#define PROTOBUF_C_BUFFER_SIMPLE_INIT(array_of_bytes) \ +{ \ + { protobuf_c_buffer_simple_append }, \ + sizeof(array_of_bytes), \ + 0, \ + (array_of_bytes), \ + 0, \ + NULL \ +} + +/** + * Clear a `ProtobufCBufferSimple` object, freeing any allocated memory. + */ +#define PROTOBUF_C_BUFFER_SIMPLE_CLEAR(simp_buf) \ +do { \ + if ((simp_buf)->must_free_data) { \ + if ((simp_buf)->allocator != NULL) \ + (simp_buf)->allocator->free( \ + (simp_buf)->allocator, \ + (simp_buf)->data); \ + else \ + free((simp_buf)->data); \ + } \ +} while (0) + +/** + * The `append` method for `ProtobufCBufferSimple`. + * + * \param buffer + * The buffer object to append to. Must actually be a + * `ProtobufCBufferSimple` object. + * \param len + * Number of bytes in `data`. + * \param data + * Data to append. + */ +PROTOBUF_C__API +void +protobuf_c_buffer_simple_append( + ProtobufCBuffer *buffer, + size_t len, + const unsigned char *data); + +PROTOBUF_C__API +void +protobuf_c_service_generated_init( + ProtobufCService *service, + const ProtobufCServiceDescriptor *descriptor, + ProtobufCServiceDestroy destroy); + +PROTOBUF_C__API +void +protobuf_c_service_invoke_internal( + ProtobufCService *service, + unsigned method_index, + const ProtobufCMessage *input, + ProtobufCClosure closure, + void *closure_data); + +/**@}*/ + +PROTOBUF_C__END_DECLS + +#endif /* PROTOBUF_C_H */ diff --git a/Sources/libsignal/protocol.c b/Sources/libsignal/protocol.c new file mode 100755 index 0000000..c2b9734 --- /dev/null +++ b/Sources/libsignal/protocol.c @@ -0,0 +1,1440 @@ +#include "protocol.h" + +#include +#include + +#include "curve.h" +#include "signal_protocol_internal.h" +#include "WhisperTextProtocol.pb-c.h" + +#define SIGNAL_MESSAGE_MAC_LENGTH 8 +#define SIGNATURE_LENGTH 64 + +struct ciphertext_message +{ + signal_type_base base; + int message_type; + signal_context *global_context; + signal_buffer *serialized; +}; + +struct signal_message +{ + ciphertext_message base_message; + uint8_t message_version; + ec_public_key *sender_ratchet_key; + uint32_t counter; + uint32_t previous_counter; + signal_buffer *ciphertext; +}; + +struct pre_key_signal_message +{ + ciphertext_message base_message; + uint8_t version; + uint32_t registration_id; + int has_pre_key_id; + uint32_t pre_key_id; + uint32_t signed_pre_key_id; + ec_public_key *base_key; + ec_public_key *identity_key; + signal_message *message; +}; + +struct sender_key_message +{ + ciphertext_message base_message; + uint8_t message_version; + uint32_t key_id; + uint32_t iteration; + signal_buffer *ciphertext; +}; + +struct sender_key_distribution_message +{ + ciphertext_message base_message; + uint32_t id; + uint32_t iteration; + signal_buffer *chain_key; + ec_public_key *signature_key; +}; + +static int signal_message_serialize(signal_buffer **buffer, const signal_message *message); +static int signal_message_get_mac(signal_buffer **buffer, + uint8_t message_version, + ec_public_key *sender_identity_key, + ec_public_key *receiver_identity_key, + const uint8_t *mac_key, size_t mac_key_len, + const uint8_t *serialized, size_t serialized_len, + signal_context *global_context); + +static int pre_key_signal_message_serialize(signal_buffer **buffer, const pre_key_signal_message *message); + +static int sender_key_message_serialize(signal_buffer **buffer, const sender_key_message *message, ec_private_key *signature_key, signal_context *global_context); +static int sender_key_distribution_message_serialize(signal_buffer **buffer, const sender_key_distribution_message *message); + +/*------------------------------------------------------------------------*/ + +int ciphertext_message_get_type(const ciphertext_message *message) +{ + assert(message); + return message->message_type; +} + +signal_buffer *ciphertext_message_get_serialized(const ciphertext_message *message) +{ + assert(message); + return message->serialized; +} + +/*------------------------------------------------------------------------*/ + +int signal_message_create(signal_message **message, uint8_t message_version, + const uint8_t *mac_key, size_t mac_key_len, + ec_public_key *sender_ratchet_key, uint32_t counter, uint32_t previous_counter, + const uint8_t *ciphertext, size_t ciphertext_len, + ec_public_key *sender_identity_key, ec_public_key *receiver_identity_key, + signal_context *global_context) +{ + int result = 0; + signal_buffer *message_buf = 0; + signal_buffer *mac_buf = 0; + signal_message *result_message = 0; + + assert(global_context); + + result_message = malloc(sizeof(signal_message)); + if(!result_message) { + return SG_ERR_NOMEM; + } + memset(result_message, 0, sizeof(signal_message)); + SIGNAL_INIT(result_message, signal_message_destroy); + + result_message->base_message.message_type = CIPHERTEXT_SIGNAL_TYPE; + result_message->base_message.global_context = global_context; + + SIGNAL_REF(sender_ratchet_key); + result_message->sender_ratchet_key = sender_ratchet_key; + + result_message->counter = counter; + result_message->previous_counter = previous_counter; + + result_message->ciphertext = signal_buffer_create(ciphertext, ciphertext_len); + if(!result_message->ciphertext) { + result = SG_ERR_NOMEM; + goto complete; + } + + result_message->message_version = message_version; + + result = signal_message_serialize(&message_buf, result_message); + if(result < 0) { + goto complete; + } + + result = signal_message_get_mac(&mac_buf, + message_version, sender_identity_key, receiver_identity_key, + mac_key, mac_key_len, + signal_buffer_data(message_buf), + signal_buffer_len(message_buf), + global_context); + if(result < 0) { + goto complete; + } + + result_message->base_message.serialized = signal_buffer_append( + message_buf, + signal_buffer_data(mac_buf), + signal_buffer_len(mac_buf)); + if(result_message->base_message.serialized) { + message_buf = 0; + } + else { + result = SG_ERR_NOMEM; + } + +complete: + if(message_buf) { + signal_buffer_free(message_buf); + } + if(mac_buf) { + signal_buffer_free(mac_buf); + } + if(result >= 0) { + result = 0; + *message = result_message; + } + else { + if(result_message) { + SIGNAL_UNREF(result_message); + } + } + return result; +} + +static int signal_message_serialize(signal_buffer **buffer, const signal_message *message) +{ + int result = 0; + size_t result_size = 0; + signal_buffer *result_buf = 0; + Textsecure__SignalMessage message_structure = TEXTSECURE__SIGNAL_MESSAGE__INIT; + size_t len = 0; + uint8_t *data = 0; + + uint8_t version = (message->message_version << 4) | CIPHERTEXT_CURRENT_VERSION; + + result = ec_public_key_serialize_protobuf(&message_structure.ratchetkey, message->sender_ratchet_key); + if(result < 0) { + goto complete; + } + message_structure.has_ratchetkey = 1; + + message_structure.counter = message->counter; + message_structure.has_counter = 1; + + message_structure.previouscounter = message->previous_counter; + message_structure.has_previouscounter = 1; + + message_structure.ciphertext.data = signal_buffer_data(message->ciphertext); + message_structure.ciphertext.len = signal_buffer_len(message->ciphertext); + message_structure.has_ciphertext = 1; + + len = textsecure__signal_message__get_packed_size(&message_structure); + + result_buf = signal_buffer_alloc(len + 1); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + data[0] = version; + + result_size = textsecure__signal_message__pack(&message_structure, data + 1); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(message_structure.ratchetkey.data) { + free(message_structure.ratchetkey.data); + } + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int signal_message_deserialize(signal_message **message, const uint8_t *data, size_t len, signal_context *global_context) +{ + int result = 0; + signal_message *result_message = 0; + Textsecure__SignalMessage *message_structure = 0; + uint8_t version = 0; + uint8_t *ciphertext_data = 0; + uint8_t *serialized_data = 0; + const uint8_t *message_data = 0; + size_t message_len = 0; + + assert(global_context); + + if(!data || len <= 1 + SIGNAL_MESSAGE_MAC_LENGTH) { + result = SG_ERR_INVAL; + goto complete; + } + + version = (data[0] & 0xF0) >> 4; + + /* Set some pointers and lengths for the sections of the raw data */ + message_data = data + 1; + message_len = len - 1 - SIGNAL_MESSAGE_MAC_LENGTH; + + if(version <= CIPHERTEXT_UNSUPPORTED_VERSION) { + signal_log(global_context, SG_LOG_WARNING, "Unsupported legacy version: %d", version); + result = SG_ERR_LEGACY_MESSAGE; + goto complete; + } + + if(version > CIPHERTEXT_CURRENT_VERSION) { + signal_log(global_context, SG_LOG_WARNING, "Unknown version: %d", version); + result = SG_ERR_INVALID_MESSAGE; + goto complete; + } + + message_structure = textsecure__signal_message__unpack(0, message_len, message_data); + if(!message_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(!message_structure->has_ciphertext + || !message_structure->has_counter + || !message_structure->has_ratchetkey) { + signal_log(global_context, SG_LOG_WARNING, "Incomplete message"); + result = SG_ERR_INVALID_MESSAGE; + goto complete; + } + + result_message = malloc(sizeof(signal_message)); + if(!result_message) { + result = SG_ERR_NOMEM; + goto complete; + } + memset(result_message, 0, sizeof(signal_message)); + SIGNAL_INIT(result_message, signal_message_destroy); + + result_message->base_message.message_type = CIPHERTEXT_SIGNAL_TYPE; + result_message->base_message.global_context = global_context; + + result = curve_decode_point(&result_message->sender_ratchet_key, + message_structure->ratchetkey.data, message_structure->ratchetkey.len, global_context); + if(result < 0) { + goto complete; + } + + result_message->message_version = version; + result_message->counter = message_structure->counter; + result_message->previous_counter = message_structure->previouscounter; + + result_message->ciphertext = signal_buffer_alloc(message_structure->ciphertext.len); + if(!result_message->ciphertext) { + result = SG_ERR_NOMEM; + goto complete; + } + ciphertext_data = signal_buffer_data(result_message->ciphertext); + memcpy(ciphertext_data, message_structure->ciphertext.data, message_structure->ciphertext.len); + + result_message->base_message.serialized = signal_buffer_alloc(len); + if(!result_message->base_message.serialized) { + result = SG_ERR_NOMEM; + goto complete; + } + serialized_data = signal_buffer_data(result_message->base_message.serialized); + memcpy(serialized_data, data, len); + +complete: + if(message_structure) { + textsecure__signal_message__free_unpacked(message_structure, 0); + } + if(result >= 0) { + *message = result_message; + } + else { + if(result_message) { + SIGNAL_UNREF(result_message); + } + } + return result; +} + +int signal_message_copy(signal_message **message, signal_message *other_message, signal_context *global_context) +{ + int result = 0; + signal_message *result_message = 0; + + assert(other_message); + assert(global_context); + + result = signal_message_deserialize( + &result_message, + signal_buffer_data(other_message->base_message.serialized), + signal_buffer_len(other_message->base_message.serialized), + global_context); + if(result >= 0) { + *message = result_message; + } + + return result; +} + +ec_public_key *signal_message_get_sender_ratchet_key(const signal_message *message) +{ + assert(message); + return message->sender_ratchet_key; +} + +uint8_t signal_message_get_message_version(const signal_message *message) +{ + assert(message); + return message->message_version; +} + +uint32_t signal_message_get_counter(const signal_message *message) +{ + assert(message); + return message->counter; +} + +signal_buffer *signal_message_get_body(const signal_message *message) +{ + assert(message); + return message->ciphertext; +} + +int signal_message_verify_mac(signal_message *message, + ec_public_key *sender_identity_key, + ec_public_key *receiver_identity_key, + const uint8_t *mac_key, size_t mac_key_len, + signal_context *global_context) +{ + int result = 0; + signal_buffer *our_mac_buffer = 0; + uint8_t *serialized_data = 0; + size_t serialized_len = 0; + uint8_t *serialized_message_data = 0; + size_t serialized_message_len = 0; + uint8_t *their_mac_data = 0; + const size_t their_mac_len = SIGNAL_MESSAGE_MAC_LENGTH; + uint8_t *our_mac_data = 0; + size_t our_mac_len = 0; + + assert(message); + assert(message->base_message.serialized); + + /* Set some pointers and lengths for the sections of the raw data */ + serialized_data = signal_buffer_data(message->base_message.serialized); + serialized_len = signal_buffer_len(message->base_message.serialized); + serialized_message_data = serialized_data; + serialized_message_len = serialized_len - SIGNAL_MESSAGE_MAC_LENGTH; + their_mac_data = serialized_data + serialized_message_len; + + result = signal_message_get_mac(&our_mac_buffer, + message->message_version, + sender_identity_key, receiver_identity_key, + mac_key, mac_key_len, + serialized_message_data, serialized_message_len, + message->base_message.global_context); + if(result < 0) { + goto complete; + } + + our_mac_data = signal_buffer_data(our_mac_buffer); + our_mac_len = signal_buffer_len(our_mac_buffer); + if(our_mac_len != their_mac_len) { + signal_log(global_context, SG_LOG_WARNING, "MAC length mismatch: %d != %d", our_mac_len, their_mac_len); + result = SG_ERR_UNKNOWN; + goto complete; + } + + if(signal_constant_memcmp(our_mac_data, their_mac_data, our_mac_len) == 0) { + result = 1; + } + else { + signal_log(global_context, SG_LOG_NOTICE, "Bad MAC"); + result = 0; + } + +complete: + if(our_mac_buffer) { + signal_buffer_free(our_mac_buffer); + } + return result; +} + +static int signal_message_get_mac(signal_buffer **buffer, + uint8_t message_version, + ec_public_key *sender_identity_key, + ec_public_key *receiver_identity_key, + const uint8_t *mac_key, size_t mac_key_len, + const uint8_t *serialized, size_t serialized_len, + signal_context *global_context) +{ + int result = 0; + void *hmac_context; + signal_buffer *sender_key_buffer = 0; + signal_buffer *receiver_key_buffer = 0; + signal_buffer *full_mac_buffer = 0; + signal_buffer *result_buf = 0; + uint8_t *result_data = 0; + + assert(global_context); + + result = signal_hmac_sha256_init(global_context, + &hmac_context, mac_key, mac_key_len); + if(result < 0) { + goto complete; + } + + if(message_version >= 3) { + result = ec_public_key_serialize(&sender_key_buffer, sender_identity_key); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_update(global_context, hmac_context, + signal_buffer_data(sender_key_buffer), + signal_buffer_len(sender_key_buffer)); + if(result < 0) { + goto complete; + } + + result = ec_public_key_serialize(&receiver_key_buffer, receiver_identity_key); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_update(global_context, hmac_context, + signal_buffer_data(receiver_key_buffer), + signal_buffer_len(receiver_key_buffer)); + if(result < 0) { + goto complete; + } + } + + result = signal_hmac_sha256_update(global_context, hmac_context, + serialized, serialized_len); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_final(global_context, + hmac_context, &full_mac_buffer); + if(result < 0 || signal_buffer_len(full_mac_buffer) < SIGNAL_MESSAGE_MAC_LENGTH) { + if(result >= 0) { result = SG_ERR_UNKNOWN; } + goto complete; + } + + result_buf = signal_buffer_alloc(SIGNAL_MESSAGE_MAC_LENGTH); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + result_data = signal_buffer_data(result_buf); + memcpy(result_data, signal_buffer_data(full_mac_buffer), SIGNAL_MESSAGE_MAC_LENGTH); + +complete: + signal_hmac_sha256_cleanup(global_context, hmac_context); + signal_buffer_free(sender_key_buffer); + signal_buffer_free(receiver_key_buffer); + signal_buffer_free(full_mac_buffer); + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int signal_message_is_legacy(const uint8_t *data, size_t len) +{ + return data && len >= 1 && ((data[0] & 0xF0) >> 4) <= CIPHERTEXT_UNSUPPORTED_VERSION; +} + +void signal_message_destroy(signal_type_base *type) +{ + signal_message *message = (signal_message *)type; + + if(message->base_message.serialized) { + signal_buffer_free(message->base_message.serialized); + } + SIGNAL_UNREF(message->sender_ratchet_key); + if(message->ciphertext) { + signal_buffer_free(message->ciphertext); + } + free(message); +} + +/*------------------------------------------------------------------------*/ + +int pre_key_signal_message_create(pre_key_signal_message **pre_key_message, + uint8_t message_version, uint32_t registration_id, const uint32_t *pre_key_id, + uint32_t signed_pre_key_id, ec_public_key *base_key, ec_public_key *identity_key, + signal_message *message, + signal_context *global_context) +{ + int result = 0; + pre_key_signal_message *result_message = 0; + + assert(global_context); + + result_message = malloc(sizeof(pre_key_signal_message)); + + if(!result_message) { + return SG_ERR_NOMEM; + } + memset(result_message, 0, sizeof(pre_key_signal_message)); + SIGNAL_INIT(result_message, pre_key_signal_message_destroy); + + result_message->base_message.message_type = CIPHERTEXT_PREKEY_TYPE; + result_message->base_message.global_context = global_context; + + result_message->version = message_version; + result_message->registration_id = registration_id; + if(pre_key_id) { + result_message->has_pre_key_id = 1; + result_message->pre_key_id = *pre_key_id; + } + result_message->signed_pre_key_id = signed_pre_key_id; + + SIGNAL_REF(base_key); + result_message->base_key = base_key; + + SIGNAL_REF(identity_key); + result_message->identity_key = identity_key; + + SIGNAL_REF(message); + result_message->message = message; + + result = pre_key_signal_message_serialize(&result_message->base_message.serialized, result_message); + + if(result >= 0) { + result = 0; + *pre_key_message = result_message; + } + else { + if(result_message) { + SIGNAL_UNREF(result_message); + } + } + return result; +} + +static int pre_key_signal_message_serialize(signal_buffer **buffer, const pre_key_signal_message *message) +{ + int result = 0; + size_t result_size = 0; + signal_buffer *result_buf = 0; + Textsecure__PreKeySignalMessage message_structure = TEXTSECURE__PRE_KEY_SIGNAL_MESSAGE__INIT; + signal_buffer *inner_message_buffer = 0; + size_t len = 0; + uint8_t *data = 0; + + uint8_t version = (message->version << 4) | CIPHERTEXT_CURRENT_VERSION; + + message_structure.registrationid = message->registration_id; + message_structure.has_registrationid = 1; + + if(message->has_pre_key_id) { + message_structure.prekeyid = message->pre_key_id; + message_structure.has_prekeyid = 1; + } + + message_structure.signedprekeyid = message->signed_pre_key_id; + message_structure.has_signedprekeyid = 1; + + result = ec_public_key_serialize_protobuf(&message_structure.basekey, message->base_key); + if(result < 0) { + goto complete; + } + message_structure.has_basekey = 1; + + result = ec_public_key_serialize_protobuf(&message_structure.identitykey, message->identity_key); + if(result < 0) { + goto complete; + } + message_structure.has_identitykey = 1; + + inner_message_buffer = message->message->base_message.serialized; + message_structure.message.data = signal_buffer_data(inner_message_buffer); + message_structure.message.len = signal_buffer_len(inner_message_buffer); + message_structure.has_message = 1; + + len = textsecure__pre_key_signal_message__get_packed_size(&message_structure); + + result_buf = signal_buffer_alloc(len + 1); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + data[0] = version; + + result_size = textsecure__pre_key_signal_message__pack(&message_structure, data + 1); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(message_structure.basekey.data) { + free(message_structure.basekey.data); + } + if(message_structure.identitykey.data) { + free(message_structure.identitykey.data); + } + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int pre_key_signal_message_deserialize(pre_key_signal_message **message, + const uint8_t *data, size_t len, + signal_context *global_context) +{ + int result = 0; + pre_key_signal_message *result_message = 0; + Textsecure__PreKeySignalMessage *message_structure = 0; + uint8_t version = 0; + const uint8_t *message_data = 0; + size_t message_len = 0; + uint8_t *serialized_data = 0; + + assert(global_context); + + if(!data || len <= 1) { + result = SG_ERR_INVAL; + goto complete; + } + + version = (data[0] & 0xF0) >> 4; + + /* Set some pointers and lengths for the sections of the raw data */ + message_data = data + 1; + message_len = len - 1; + + if(version < CIPHERTEXT_CURRENT_VERSION) { + signal_log(global_context, SG_LOG_WARNING, "Unsupported legacy version: %d", version); + result = SG_ERR_LEGACY_MESSAGE; + goto complete; + } + + if(version > CIPHERTEXT_CURRENT_VERSION) { + signal_log(global_context, SG_LOG_WARNING, "Unknown version: %d", version); + result = SG_ERR_INVALID_VERSION; + goto complete; + } + + message_structure = textsecure__pre_key_signal_message__unpack(0, message_len, message_data); + if(!message_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(!message_structure->has_signedprekeyid || + !message_structure->has_basekey || + !message_structure->has_identitykey || + !message_structure->has_message) { + signal_log(global_context, SG_LOG_WARNING, "Incomplete message"); + result = SG_ERR_INVALID_MESSAGE; + goto complete; + } + + result_message = malloc(sizeof(pre_key_signal_message)); + if(!result_message) { + result = SG_ERR_NOMEM; + goto complete; + } + memset(result_message, 0, sizeof(pre_key_signal_message)); + SIGNAL_INIT(result_message, pre_key_signal_message_destroy); + + result_message->base_message.message_type = CIPHERTEXT_PREKEY_TYPE; + result_message->base_message.global_context = global_context; + + result_message->version = version; + + if(message_structure->has_registrationid) { + result_message->registration_id = message_structure->registrationid; + } + + if(message_structure->has_prekeyid) { + result_message->pre_key_id = message_structure->prekeyid; + result_message->has_pre_key_id = 1; + } + + if(message_structure->has_signedprekeyid) { + result_message->signed_pre_key_id = message_structure->signedprekeyid; + } + + if(message_structure->has_basekey) { + result = curve_decode_point(&result_message->base_key, + message_structure->basekey.data, message_structure->basekey.len, global_context); + if(result < 0) { + goto complete; + } + } + + if(message_structure->has_identitykey) { + result = curve_decode_point(&result_message->identity_key, + message_structure->identitykey.data, message_structure->identitykey.len, global_context); + if(result < 0) { + goto complete; + } + } + + if(message_structure->has_message) { + result = signal_message_deserialize(&result_message->message, + message_structure->message.data, + message_structure->message.len, + global_context); + if(result < 0) { + goto complete; + } + if(result_message->message->message_version != version) { + signal_log(global_context, SG_LOG_WARNING, "Inner message version mismatch: %d != %d", + result_message->message->message_version, version); + result = SG_ERR_INVALID_VERSION; + goto complete; + } + } + + result_message->base_message.serialized = signal_buffer_alloc(len); + if(!result_message->base_message.serialized) { + result = SG_ERR_NOMEM; + goto complete; + } + serialized_data = signal_buffer_data(result_message->base_message.serialized); + memcpy(serialized_data, data, len); + +complete: + if(message_structure) { + textsecure__pre_key_signal_message__free_unpacked(message_structure, 0); + } + if(result >= 0) { + *message = result_message; + } + else { + if(result_message) { + SIGNAL_UNREF(result_message); + } + } + return result; +} + +int pre_key_signal_message_copy(pre_key_signal_message **message, pre_key_signal_message *other_message, signal_context *global_context) +{ + int result = 0; + pre_key_signal_message *result_message = 0; + + assert(other_message); + assert(global_context); + + result = pre_key_signal_message_deserialize( + &result_message, + signal_buffer_data(other_message->base_message.serialized), + signal_buffer_len(other_message->base_message.serialized), + global_context); + if(result >= 0) { + *message = result_message; + } + + return result; +} + +uint8_t pre_key_signal_message_get_message_version(const pre_key_signal_message *message) +{ + assert(message); + return message->version; +} + +ec_public_key *pre_key_signal_message_get_identity_key(const pre_key_signal_message *message) +{ + assert(message); + return message->identity_key; +} + +uint32_t pre_key_signal_message_get_registration_id(const pre_key_signal_message *message) +{ + assert(message); + return message->registration_id; +} + +int pre_key_signal_message_has_pre_key_id(const pre_key_signal_message *message) +{ + assert(message); + return message->has_pre_key_id; +} + +uint32_t pre_key_signal_message_get_pre_key_id(const pre_key_signal_message *message) +{ + assert(message); + assert(message->has_pre_key_id); + return message->pre_key_id; +} + +uint32_t pre_key_signal_message_get_signed_pre_key_id(const pre_key_signal_message *message) +{ + assert(message); + return message->signed_pre_key_id; +} + +ec_public_key *pre_key_signal_message_get_base_key(const pre_key_signal_message *message) +{ + assert(message); + return message->base_key; +} + +signal_message *pre_key_signal_message_get_signal_message(const pre_key_signal_message *message) +{ + assert(message); + return message->message; +} + +void pre_key_signal_message_destroy(signal_type_base *type) +{ + pre_key_signal_message *message = (pre_key_signal_message *)type; + + if(message->base_message.serialized) { + signal_buffer_free(message->base_message.serialized); + } + SIGNAL_UNREF(message->base_key); + SIGNAL_UNREF(message->identity_key); + SIGNAL_UNREF(message->message); + free(message); +} + +int sender_key_message_create(sender_key_message **message, + uint32_t key_id, uint32_t iteration, + const uint8_t *ciphertext, size_t ciphertext_len, + ec_private_key *signature_key, + signal_context *global_context) +{ + int result = 0; + sender_key_message *result_message = 0; + signal_buffer *message_buf = 0; + + assert(global_context); + + result_message = malloc(sizeof(sender_key_message)); + + if(!result_message) { + return SG_ERR_NOMEM; + } + memset(result_message, 0, sizeof(sender_key_message)); + SIGNAL_INIT(result_message, sender_key_message_destroy); + + result_message->base_message.message_type = CIPHERTEXT_SENDERKEY_TYPE; + result_message->base_message.global_context = global_context; + + result_message->message_version = CIPHERTEXT_CURRENT_VERSION; + result_message->key_id = key_id; + result_message->iteration = iteration; + + result_message->ciphertext = signal_buffer_create(ciphertext, ciphertext_len); + if(!result_message->ciphertext) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = sender_key_message_serialize(&message_buf, result_message, signature_key, global_context); + if(result < 0) { + goto complete; + } + + result_message->base_message.serialized = message_buf; + +complete: + if(result >= 0) { + result = 0; + *message = result_message; + } + else { + if(result_message) { + SIGNAL_UNREF(result_message); + } + } + return result; +} + +int sender_key_message_serialize(signal_buffer **buffer, const sender_key_message *message, ec_private_key *signature_key, signal_context *global_context) +{ + int result = 0; + uint8_t version = (CIPHERTEXT_CURRENT_VERSION << 4) | CIPHERTEXT_CURRENT_VERSION; + size_t result_size = 0; + signal_buffer *result_buf = 0; + signal_buffer *signature_buf = 0; + Textsecure__SenderKeyMessage message_structure = TEXTSECURE__SENDER_KEY_MESSAGE__INIT; + size_t len = 0; + uint8_t *data = 0; + + message_structure.id = message->key_id; + message_structure.has_id = 1; + + message_structure.iteration = message->iteration; + message_structure.has_iteration = 1; + + message_structure.ciphertext.data = signal_buffer_data(message->ciphertext); + message_structure.ciphertext.len = signal_buffer_len(message->ciphertext); + message_structure.has_ciphertext = 1; + + len = textsecure__sender_key_message__get_packed_size(&message_structure); + + result_buf = signal_buffer_alloc(sizeof(version) + len + SIGNATURE_LENGTH); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + data[0] = version; + + result_size = textsecure__sender_key_message__pack(&message_structure, data + sizeof(version)); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + + result = curve_calculate_signature(global_context, &signature_buf, signature_key, + data, len + sizeof(version)); + if(result < 0) { + if(result == SG_ERR_INVALID_KEY) { + result = SG_ERR_UNKNOWN; + } + goto complete; + } + else if(signal_buffer_len(signature_buf) != SIGNATURE_LENGTH) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + memcpy(data + sizeof(version) + len, signal_buffer_data(signature_buf), SIGNATURE_LENGTH); + +complete: + signal_buffer_free(signature_buf); + if(result >= 0) { + *buffer = result_buf; + } + else { + signal_buffer_free(result_buf); + } + return result; +} + +int sender_key_message_deserialize(sender_key_message **message, + const uint8_t *data, size_t len, + signal_context *global_context) +{ + int result = 0; + sender_key_message *result_message = 0; + uint8_t version = 0; + const uint8_t *message_data = 0; + size_t message_len = 0; + Textsecure__SenderKeyMessage *message_structure = 0; + + assert(global_context); + + if(!data || len <= sizeof(uint8_t) + SIGNATURE_LENGTH) { + result = SG_ERR_INVAL; + goto complete; + } + + version = (data[0] & 0xF0) >> 4; + message_data = data + sizeof(uint8_t); + message_len = len - sizeof(uint8_t) - SIGNATURE_LENGTH; + + if(version < CIPHERTEXT_CURRENT_VERSION) { + signal_log(global_context, SG_LOG_WARNING, "Legacy message: %d", version); + result = SG_ERR_LEGACY_MESSAGE; + goto complete; + } + + if(version > CIPHERTEXT_CURRENT_VERSION) { + signal_log(global_context, SG_LOG_WARNING, "Unknown version: %d", version); + result = SG_ERR_INVALID_VERSION; + goto complete; + } + + message_structure = textsecure__sender_key_message__unpack(0, message_len, message_data); + if(!message_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(!message_structure->has_id + || !message_structure->has_iteration + || !message_structure->has_ciphertext) { + signal_log(global_context, SG_LOG_WARNING, "Incomplete message"); + result = SG_ERR_INVALID_MESSAGE; + goto complete; + } + + result_message = malloc(sizeof(sender_key_message)); + if(!result_message) { + result = SG_ERR_NOMEM; + goto complete; + } + memset(result_message, 0, sizeof(sender_key_message)); + SIGNAL_INIT(result_message, sender_key_message_destroy); + + result_message->base_message.message_type = CIPHERTEXT_SENDERKEY_TYPE; + result_message->base_message.global_context = global_context; + + result_message->key_id = message_structure->id; + result_message->iteration = message_structure->iteration; + result_message->message_version = version; + + result_message->ciphertext = signal_buffer_create( + message_structure->ciphertext.data, + message_structure->ciphertext.len); + if(!result_message->ciphertext) { + result = SG_ERR_NOMEM; + goto complete; + } + + result_message->base_message.serialized = signal_buffer_create(data, len); + if(!result_message->base_message.serialized) { + result = SG_ERR_NOMEM; + goto complete; + } + +complete: + if(message_structure) { + textsecure__sender_key_message__free_unpacked(message_structure, 0); + } + if(result >= 0) { + *message = result_message; + } + else { + if(result_message) { + SIGNAL_UNREF(result_message); + } + } + return result; +} + +int sender_key_message_copy(sender_key_message **message, sender_key_message *other_message, signal_context *global_context) +{ + int result = 0; + sender_key_message *result_message = 0; + + assert(other_message); + assert(global_context); + + result = sender_key_message_deserialize( + &result_message, + signal_buffer_data(other_message->base_message.serialized), + signal_buffer_len(other_message->base_message.serialized), + global_context); + if(result >= 0) { + *message = result_message; + } + + return result; +} + +uint32_t sender_key_message_get_key_id(sender_key_message *message) +{ + assert(message); + return message->key_id; +} + +uint32_t sender_key_message_get_iteration(sender_key_message *message) +{ + assert(message); + return message->iteration; +} + +signal_buffer *sender_key_message_get_ciphertext(sender_key_message *message) +{ + assert(message); + return message->ciphertext; +} + +int sender_key_message_verify_signature(sender_key_message *message, ec_public_key *signature_key) +{ + int result = 0; + uint8_t *data; + size_t data_len; + + assert(message); + + data = signal_buffer_data(message->base_message.serialized); + data_len = signal_buffer_len(message->base_message.serialized) - SIGNATURE_LENGTH; + + result = curve_verify_signature(signature_key, data, data_len, data + data_len, SIGNATURE_LENGTH); + + if(result == 0) { + signal_log(message->base_message.global_context, SG_LOG_ERROR, "Invalid signature!"); + result = SG_ERR_INVALID_MESSAGE; + } + else if(result < 0) { + result = SG_ERR_INVALID_MESSAGE; + } + else { + result = 0; + } + + return result; +} + +void sender_key_message_destroy(signal_type_base *type) +{ + sender_key_message *message = (sender_key_message *)type; + + if(message->base_message.serialized) { + signal_buffer_free(message->base_message.serialized); + } + if(message->ciphertext) { + signal_buffer_free(message->ciphertext); + } + free(message); +} + +int sender_key_distribution_message_create(sender_key_distribution_message **message, + uint32_t id, uint32_t iteration, + const uint8_t *chain_key, size_t chain_key_len, + ec_public_key *signature_key, + signal_context *global_context) +{ + int result = 0; + + sender_key_distribution_message *result_message = 0; + signal_buffer *message_buf = 0; + + assert(global_context); + + result_message = malloc(sizeof(sender_key_distribution_message)); + + if(!result_message) { + return SG_ERR_NOMEM; + } + memset(result_message, 0, sizeof(sender_key_distribution_message)); + SIGNAL_INIT(result_message, sender_key_distribution_message_destroy); + + result_message->base_message.message_type = CIPHERTEXT_SENDERKEY_DISTRIBUTION_TYPE; + result_message->base_message.global_context = global_context; + + result_message->id = id; + result_message->iteration = iteration; + + result_message->chain_key = signal_buffer_create(chain_key, chain_key_len); + if(!result_message->chain_key) { + goto complete; + } + + SIGNAL_REF(signature_key); + result_message->signature_key = signature_key; + + result = sender_key_distribution_message_serialize(&message_buf, result_message); + if(result < 0) { + goto complete; + } + + result_message->base_message.serialized = message_buf; + +complete: + if(result >= 0) { + result = 0; + *message = result_message; + } + else { + if(result_message) { + SIGNAL_UNREF(result_message); + } + } + return result; +} + +int sender_key_distribution_message_serialize(signal_buffer **buffer, const sender_key_distribution_message *message) +{ + int result = 0; + uint8_t version = (CIPHERTEXT_CURRENT_VERSION << 4) | CIPHERTEXT_CURRENT_VERSION; + size_t result_size = 0; + signal_buffer *result_buf = 0; + Textsecure__SenderKeyDistributionMessage message_structure = TEXTSECURE__SENDER_KEY_DISTRIBUTION_MESSAGE__INIT; + size_t len = 0; + uint8_t *data = 0; + + message_structure.id = message->id; + message_structure.has_id = 1; + + message_structure.iteration = message->iteration; + message_structure.has_iteration = 1; + + message_structure.chainkey.data = signal_buffer_data(message->chain_key); + message_structure.chainkey.len = signal_buffer_len(message->chain_key); + message_structure.has_chainkey = 1; + + result = ec_public_key_serialize_protobuf(&message_structure.signingkey, message->signature_key); + if(result < 0) { + goto complete; + } + message_structure.has_signingkey = 1; + + len = textsecure__sender_key_distribution_message__get_packed_size(&message_structure); + + result_buf = signal_buffer_alloc(sizeof(version) + len); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + data[0] = version; + + result_size = textsecure__sender_key_distribution_message__pack(&message_structure, data + sizeof(version)); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(message_structure.has_signingkey) { + free(message_structure.signingkey.data); + } + if(result >= 0) { + *buffer = result_buf; + } + else { + signal_buffer_free(result_buf); + } + return result; +} + +int sender_key_distribution_message_deserialize(sender_key_distribution_message **message, + const uint8_t *data, size_t len, + signal_context *global_context) +{ + int result = 0; + sender_key_distribution_message *result_message = 0; + uint8_t version = 0; + const uint8_t *message_data = 0; + size_t message_len = 0; + Textsecure__SenderKeyDistributionMessage *message_structure = 0; + + assert(global_context); + + if(!data || len <= sizeof(uint8_t)) { + result = SG_ERR_INVAL; + goto complete; + } + + version = (data[0] & 0xF0) >> 4; + message_data = data + sizeof(uint8_t); + message_len = len - sizeof(uint8_t); + + if(version < CIPHERTEXT_CURRENT_VERSION) { + signal_log(global_context, SG_LOG_WARNING, "Legacy message: %d", version); + result = SG_ERR_LEGACY_MESSAGE; + goto complete; + } + + if(version > CIPHERTEXT_CURRENT_VERSION) { + signal_log(global_context, SG_LOG_WARNING, "Unknown version: %d", version); + result = SG_ERR_INVALID_VERSION; + goto complete; + } + + message_structure = textsecure__sender_key_distribution_message__unpack(0, message_len, message_data); + if(!message_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(!message_structure->has_id + || !message_structure->has_iteration + || !message_structure->has_chainkey + || !message_structure->has_signingkey) { + signal_log(global_context, SG_LOG_WARNING, "Incomplete message"); + result = SG_ERR_INVALID_MESSAGE; + goto complete; + } + + result_message = malloc(sizeof(sender_key_distribution_message)); + if(!result_message) { + result = SG_ERR_NOMEM; + goto complete; + } + memset(result_message, 0, sizeof(sender_key_distribution_message)); + SIGNAL_INIT(result_message, sender_key_distribution_message_destroy); + + result_message->base_message.message_type = CIPHERTEXT_SENDERKEY_DISTRIBUTION_TYPE; + result_message->base_message.global_context = global_context; + + result_message->id = message_structure->id; + result_message->iteration = message_structure->iteration; + + result_message->chain_key = signal_buffer_create( + message_structure->chainkey.data, + message_structure->chainkey.len); + if(!result_message->chain_key) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = curve_decode_point(&result_message->signature_key, + message_structure->signingkey.data, + message_structure->signingkey.len, + global_context); + if(result < 0) { + goto complete; + } + + result_message->base_message.serialized = signal_buffer_create(data, len); + if(!result_message->base_message.serialized) { + result = SG_ERR_NOMEM; + goto complete; + } + +complete: + if(message_structure) { + textsecure__sender_key_distribution_message__free_unpacked(message_structure, 0); + } + if(result >= 0) { + *message = result_message; + } + else { + if(result_message) { + SIGNAL_UNREF(result_message); + } + } + return result; +} + +int sender_key_distribution_message_copy(sender_key_distribution_message **message, sender_key_distribution_message *other_message, signal_context *global_context) +{ + int result = 0; + sender_key_distribution_message *result_message = 0; + + assert(other_message); + assert(global_context); + + result = sender_key_distribution_message_deserialize( + &result_message, + signal_buffer_data(other_message->base_message.serialized), + signal_buffer_len(other_message->base_message.serialized), + global_context); + if(result >= 0) { + *message = result_message; + } + + return result; +} + +uint32_t sender_key_distribution_message_get_id(sender_key_distribution_message *message) +{ + assert(message); + return message->id; +} + +uint32_t sender_key_distribution_message_get_iteration(sender_key_distribution_message *message) +{ + assert(message); + return message->iteration; +} + +signal_buffer *sender_key_distribution_message_get_chain_key(sender_key_distribution_message *message) +{ + assert(message); + return message->chain_key; +} + +ec_public_key *sender_key_distribution_message_get_signature_key(sender_key_distribution_message *message) +{ + assert(message); + return message->signature_key; +} + +void sender_key_distribution_message_destroy(signal_type_base *type) +{ + sender_key_distribution_message *message = (sender_key_distribution_message *)type; + + if(message->base_message.serialized) { + signal_buffer_free(message->base_message.serialized); + } + + if(message->chain_key) { + signal_buffer_free(message->chain_key); + } + SIGNAL_UNREF(message->signature_key); + free(message); +} diff --git a/Sources/libsignal/ratchet.c b/Sources/libsignal/ratchet.c new file mode 100755 index 0000000..83ab5a1 --- /dev/null +++ b/Sources/libsignal/ratchet.c @@ -0,0 +1,1240 @@ +#include "ratchet.h" + +#include +#include +#include +#include +#include "protobuf-c/protobuf-c.h" + +#include "hkdf.h" +#include "curve.h" +#include "session_state.h" +#include "protocol.h" +#include "vpool.h" +#include "LocalStorageProtocol.pb-c.h" +#include "signal_protocol_internal.h" + +#define HASH_OUTPUT_SIZE 32 +#define DERIVED_MESSAGE_SECRETS_SIZE 80 +#define DERIVED_ROOT_SECRETS_SIZE 64 + +struct ratchet_chain_key { + signal_type_base base; + signal_context *global_context; + hkdf_context *kdf; + uint8_t *key; + size_t key_len; + uint32_t index; +}; + +struct ratchet_root_key { + signal_type_base base; + signal_context *global_context; + hkdf_context *kdf; + uint8_t *key; + size_t key_len; +}; + +struct ratchet_identity_key_pair { + signal_type_base base; + ec_public_key *public_key; + ec_private_key *private_key; +}; + +int ratchet_chain_key_create(ratchet_chain_key **chain_key, hkdf_context *kdf, const uint8_t *key, size_t key_len, uint32_t index, signal_context *global_context) +{ + ratchet_chain_key *result = 0; + + if(!kdf || !key) { + return SG_ERR_INVAL; + } + + result = malloc(sizeof(ratchet_chain_key)); + if(!result) { + return SG_ERR_NOMEM; + } + + SIGNAL_INIT(result, ratchet_chain_key_destroy); + result->global_context = global_context; + result->kdf = kdf; + + result->key = malloc(key_len); + if(!result->key) { + free(result); + return SG_ERR_NOMEM; + } + memcpy(result->key, key, key_len); + result->key_len = key_len; + + result->index = index; + SIGNAL_REF(result->kdf); + *chain_key = result; + + return 0; +} + +int ratchet_chain_key_get_key(const ratchet_chain_key *chain_key, signal_buffer **buffer) +{ + signal_buffer *buf = 0; + uint8_t *data = 0; + + buf = signal_buffer_alloc(chain_key->key_len); + if(!buf) { + return SG_ERR_NOMEM; + } + + data = signal_buffer_data(buf); + memcpy(data, chain_key->key, chain_key->key_len); + + *buffer = buf; + + return 0; +} + +int ratchet_chain_key_get_key_protobuf(const ratchet_chain_key *chain_key, ProtobufCBinaryData *buffer) +{ + uint8_t *data = 0; + + assert(chain_key); + assert(buffer); + + data = malloc(chain_key->key_len); + if(!data) { + return SG_ERR_NOMEM; + } + + memcpy(data, chain_key->key, chain_key->key_len); + + buffer->data = data; + buffer->len = chain_key->key_len; + return 0; +} + +uint32_t ratchet_chain_key_get_index(const ratchet_chain_key *chain_key) +{ + return chain_key->index; +} + +ssize_t ratchet_chain_key_get_base_material(const ratchet_chain_key *chain_key, uint8_t **material, const uint8_t *seed, size_t seed_len) +{ + int result = 0; + signal_buffer *output_buffer = 0; + uint8_t *output = 0; + size_t output_len = 0; + + void *hmac_context = 0; + result = signal_hmac_sha256_init(chain_key->global_context, &hmac_context, chain_key->key, chain_key->key_len); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_update(chain_key->global_context, hmac_context, seed, seed_len); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_final(chain_key->global_context, hmac_context, &output_buffer); + if(result < 0) { + goto complete; + } + + output_len = signal_buffer_len(output_buffer); + output = malloc(output_len); + if(!output) { + result = SG_ERR_NOMEM; + goto complete; + } + + memcpy(output, signal_buffer_data(output_buffer), output_len); + +complete: + signal_hmac_sha256_cleanup(chain_key->global_context, hmac_context); + signal_buffer_free(output_buffer); + + if(result >= 0) { + *material = output; + return (ssize_t)output_len; + } + else { + return result; + } +} + +int ratchet_chain_key_get_message_keys(ratchet_chain_key *chain_key, ratchet_message_keys *message_keys) +{ + static const uint8_t message_key_seed = 0x01; + static const char key_material_seed[] = "WhisperMessageKeys"; + uint8_t salt[HASH_OUTPUT_SIZE]; + int result = 0; + ssize_t result_size = 0; + uint8_t *input_key_material = 0; + size_t input_key_material_len = 0; + uint8_t *key_material_data = 0; + size_t key_material_data_len = 0; + + memset(message_keys, 0, sizeof(ratchet_message_keys)); + + result_size = ratchet_chain_key_get_base_material(chain_key, &input_key_material, &message_key_seed, sizeof(message_key_seed)); + if(result_size < 0) { + result = (int)result_size; + signal_log(chain_key->global_context, SG_LOG_WARNING, "ratchet_chain_key_get_base_material failed"); + goto complete; + } + input_key_material_len = (size_t)result_size; + + memset(salt, 0, sizeof(salt)); + + result_size = hkdf_derive_secrets(chain_key->kdf, + &key_material_data, + input_key_material, input_key_material_len, + salt, sizeof(salt), + (uint8_t *)key_material_seed, sizeof(key_material_seed) - 1, + DERIVED_MESSAGE_SECRETS_SIZE); + if(result_size < 0) { + result = (int)result_size; + signal_log(chain_key->global_context, SG_LOG_WARNING, "hkdf_derive_secrets failed"); + goto complete; + } + key_material_data_len = (size_t)result_size; + + if(key_material_data_len != RATCHET_CIPHER_KEY_LENGTH + RATCHET_MAC_KEY_LENGTH + RATCHET_IV_LENGTH) { + signal_log(chain_key->global_context, SG_LOG_WARNING, + "key_material_data length mismatch: %d != %d", + key_material_data_len, (RATCHET_CIPHER_KEY_LENGTH + RATCHET_MAC_KEY_LENGTH + RATCHET_IV_LENGTH)); + result = SG_ERR_UNKNOWN; + goto complete; + } + + memcpy(message_keys->cipher_key, key_material_data, RATCHET_CIPHER_KEY_LENGTH); + memcpy(message_keys->mac_key, key_material_data + RATCHET_CIPHER_KEY_LENGTH, RATCHET_MAC_KEY_LENGTH); + memcpy(message_keys->iv, key_material_data + RATCHET_CIPHER_KEY_LENGTH + RATCHET_MAC_KEY_LENGTH, RATCHET_IV_LENGTH); + message_keys->counter = chain_key->index; + +complete: + if(input_key_material) { + free(input_key_material); + } + if(key_material_data) { + free(key_material_data); + } + if(result < 0) { + return result; + } + else { + return 0; + } +} + +int ratchet_chain_key_create_next(const ratchet_chain_key *chain_key, ratchet_chain_key **next_chain_key) +{ + static const uint8_t chain_key_seed = 0x02; + int result = 0; + ssize_t result_size = 0; + uint8_t *next_key = 0; + size_t next_key_len = 0; + + result_size = ratchet_chain_key_get_base_material(chain_key, &next_key, &chain_key_seed, sizeof(chain_key_seed)); + if(result_size < 0) { + result = (int)result_size; + signal_log(chain_key->global_context, SG_LOG_WARNING, "ratchet_chain_key_get_base_material failed"); + goto complete; + } + next_key_len = (size_t)result_size; + + result = ratchet_chain_key_create( + next_chain_key, + chain_key->kdf, + next_key, next_key_len, + chain_key->index + 1, + chain_key->global_context); + +complete: + if(next_key) { + free(next_key); + } + + return result; +} + +void ratchet_chain_key_destroy(signal_type_base *type) +{ + ratchet_chain_key *chain_key = (ratchet_chain_key *)type; + SIGNAL_UNREF(chain_key->kdf); + if(chain_key->key) { + signal_explicit_bzero(chain_key->key, chain_key->key_len); + free(chain_key->key); + } + free(chain_key); +} + +int ratchet_root_key_create(ratchet_root_key **root_key, hkdf_context *kdf, const uint8_t *key, size_t key_len, signal_context *global_context) +{ + ratchet_root_key *result = 0; + + if(!kdf || !key) { + return SG_ERR_INVAL; + } + + result = malloc(sizeof(ratchet_root_key)); + if(!result) { + return SG_ERR_NOMEM; + } + + SIGNAL_INIT(result, ratchet_root_key_destroy); + result->global_context = global_context; + result->kdf = kdf; + + result->key = malloc(key_len); + if(!result->key) { + free(result); + return SG_ERR_NOMEM; + } + memcpy(result->key, key, key_len); + result->key_len = key_len; + SIGNAL_REF(result->kdf); + *root_key = result; + + return 0; +} + +int ratchet_root_key_create_chain(ratchet_root_key *root_key, + ratchet_root_key **new_root_key, ratchet_chain_key **new_chain_key, + ec_public_key *their_ratchet_key, + ec_private_key *our_ratchet_key_private) +{ + static const char key_info[] = "WhisperRatchet"; + int result = 0; + ssize_t result_size = 0; + uint8_t *shared_secret = 0; + size_t shared_secret_len = 0; + uint8_t *derived_secret = 0; + ratchet_root_key *new_root_key_result = 0; + ratchet_chain_key *new_chain_key_result = 0; + + if(!their_ratchet_key || !our_ratchet_key_private) { + return SG_ERR_INVAL; + } + + result = curve_calculate_agreement(&shared_secret, their_ratchet_key, our_ratchet_key_private); + if(result < 0) { + signal_log(root_key->global_context, SG_LOG_WARNING, "curve_calculate_agreement failed"); + goto complete; + } + shared_secret_len = (size_t)result; + + result_size = hkdf_derive_secrets(root_key->kdf, &derived_secret, + shared_secret, shared_secret_len, + root_key->key, root_key->key_len, + (uint8_t *)key_info, sizeof(key_info) - 1, + DERIVED_ROOT_SECRETS_SIZE); + if(result_size < 0) { + result = (int)result_size; + signal_log(root_key->global_context, SG_LOG_WARNING, "hkdf_derive_secrets failed"); + goto complete; + } + else if(result_size != DERIVED_ROOT_SECRETS_SIZE) { + result = SG_ERR_UNKNOWN; + signal_log(root_key->global_context, SG_LOG_WARNING, "hkdf_derive_secrets size mismatch"); + goto complete; + } + + result = ratchet_root_key_create(&new_root_key_result, root_key->kdf, + derived_secret, 32, + root_key->global_context); + if(result < 0) { + signal_log(root_key->global_context, SG_LOG_WARNING, "ratchet_root_key_create failed"); + goto complete; + } + + result = ratchet_chain_key_create(&new_chain_key_result, root_key->kdf, + derived_secret + 32, 32, 0, + root_key->global_context); + if(result < 0) { + signal_log(root_key->global_context, SG_LOG_WARNING, "ratchet_chain_key_create failed"); + goto complete; + } + +complete: + if(shared_secret) { + free(shared_secret); + } + if(derived_secret) { + free(derived_secret); + } + if(result < 0) { + if(new_root_key_result) { + SIGNAL_UNREF(new_root_key_result); + } + if(new_chain_key_result) { + SIGNAL_UNREF(new_chain_key_result); + } + return result; + } + else { + *new_root_key = new_root_key_result; + *new_chain_key = new_chain_key_result; + return 0; + } +} + +int ratchet_root_key_get_key(ratchet_root_key *root_key, signal_buffer **buffer) +{ + signal_buffer *buf = 0; + uint8_t *data = 0; + + assert(root_key); + + buf = signal_buffer_alloc(root_key->key_len); + if(!buf) { + return SG_ERR_NOMEM; + } + + data = signal_buffer_data(buf); + memcpy(data, root_key->key, root_key->key_len); + + *buffer = buf; + + return 0; +} + +int ratchet_root_key_get_key_protobuf(const ratchet_root_key *root_key, ProtobufCBinaryData *buffer) +{ + uint8_t *data = 0; + + assert(root_key); + assert(buffer); + + data = malloc(root_key->key_len); + if(!data) { + return SG_ERR_NOMEM; + } + + memcpy(data, root_key->key, root_key->key_len); + + buffer->data = data; + buffer->len = root_key->key_len; + return 0; +} + +int ratchet_root_key_compare(const ratchet_root_key *key1, const ratchet_root_key *key2) +{ + if(key1 == key2) { + return 0; + } + else if(key1 == 0 && key2 != 0) { + return -1; + } + else if(key1 != 0 && key2 == 0) { + return 1; + } + else { + int kdf_compare = hkdf_compare(key1->kdf, key2->kdf); + if(kdf_compare != 0) { + return kdf_compare; + } + else if(key1->key_len < key2->key_len) { + return -1; + } + else if(key1->key_len > key2->key_len) { + return 1; + } + else { + return signal_constant_memcmp(key1->key, key2->key, key1->key_len); + } + } +} + +void ratchet_root_key_destroy(signal_type_base *type) +{ + ratchet_root_key *root_key = (ratchet_root_key *)type; + SIGNAL_UNREF(root_key->kdf); + if(root_key->key) { + signal_explicit_bzero(root_key->key, root_key->key_len); + free(root_key->key); + } + free(root_key); +} + +int ratchet_identity_key_pair_create( + ratchet_identity_key_pair **key_pair, + ec_public_key *public_key, + ec_private_key *private_key) +{ + ratchet_identity_key_pair *result = malloc(sizeof(ratchet_identity_key_pair)); + if(!result) { + return SG_ERR_NOMEM; + } + + SIGNAL_INIT(result, ratchet_identity_key_pair_destroy); + SIGNAL_REF(public_key); + SIGNAL_REF(private_key); + result->public_key = public_key; + result->private_key = private_key; + + *key_pair = result; + + return 0; +} + +int ratchet_identity_key_pair_serialize(signal_buffer **buffer, const ratchet_identity_key_pair *key_pair) +{ + int result = 0; + size_t result_size = 0; + signal_buffer *result_buf = 0; + Textsecure__IdentityKeyPairStructure key_structure = TEXTSECURE__IDENTITY_KEY_PAIR_STRUCTURE__INIT; + size_t len = 0; + uint8_t *data = 0; + + if(!key_pair) { + result = SG_ERR_INVAL; + goto complete; + } + + result = ec_public_key_serialize_protobuf(&key_structure.publickey, key_pair->public_key); + if(result < 0) { + goto complete; + } + key_structure.has_publickey = 1; + + result = ec_private_key_serialize_protobuf(&key_structure.privatekey, key_pair->private_key); + if(result < 0) { + goto complete; + } + key_structure.has_privatekey = 1; + + len = textsecure__identity_key_pair_structure__get_packed_size(&key_structure); + result_buf = signal_buffer_alloc(len); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + result_size = textsecure__identity_key_pair_structure__pack(&key_structure, data); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(key_structure.has_publickey) { + free(key_structure.publickey.data); + } + if(key_structure.has_privatekey) { + free(key_structure.privatekey.data); + } + if(result >= 0) { + result = 0; + *buffer = result_buf; + } + return result; +} + +int ratchet_identity_key_pair_deserialize(ratchet_identity_key_pair **key_pair, const uint8_t *data, size_t len, signal_context *global_context) +{ + int result = 0; + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + ratchet_identity_key_pair *result_pair = 0; + Textsecure__IdentityKeyPairStructure *key_structure = 0; + + key_structure = textsecure__identity_key_pair_structure__unpack(0, len, data); + if(!key_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(!key_structure->has_publickey || !key_structure->has_privatekey) { + result = SG_ERR_INVALID_KEY; + goto complete; + } + + result = curve_decode_point( + &public_key, + key_structure->publickey.data, + key_structure->publickey.len, + global_context); + if(result < 0) { + goto complete; + } + + result = curve_decode_private_point( + &private_key, + key_structure->privatekey.data, + key_structure->privatekey.len, + global_context); + if(result < 0) { + goto complete; + } + + result = ratchet_identity_key_pair_create(&result_pair, + public_key, private_key); + +complete: + SIGNAL_UNREF(public_key); + SIGNAL_UNREF(private_key); + if(key_structure) { + textsecure__identity_key_pair_structure__free_unpacked(key_structure, 0); + } + if(result >= 0) { + *key_pair = result_pair; + } + return result; +} + +ec_public_key *ratchet_identity_key_pair_get_public(const ratchet_identity_key_pair *key_pair) +{ + assert(key_pair); + assert(key_pair->public_key); + return key_pair->public_key; +} + +ec_private_key *ratchet_identity_key_pair_get_private(const ratchet_identity_key_pair *key_pair) +{ + assert(key_pair); + assert(key_pair->private_key); + return key_pair->private_key; +} + +void ratchet_identity_key_pair_destroy(signal_type_base *type) +{ + ratchet_identity_key_pair *key_pair = (ratchet_identity_key_pair *)type; + SIGNAL_UNREF(key_pair->public_key); + SIGNAL_UNREF(key_pair->private_key); + free(key_pair); +} + +struct symmetric_signal_protocol_parameters +{ + signal_type_base base; + ratchet_identity_key_pair *our_identity_key; + ec_key_pair *our_base_key; + ec_key_pair *our_ratchet_key; + ec_public_key *their_base_key; + ec_public_key *their_ratchet_key; + ec_public_key *their_identity_key; +}; + +struct alice_signal_protocol_parameters +{ + signal_type_base base; + ratchet_identity_key_pair *our_identity_key; + ec_key_pair *our_base_key; + ec_public_key *their_identity_key; + ec_public_key *their_signed_pre_key; + ec_public_key *their_one_time_pre_key; /* optional */ + ec_public_key *their_ratchet_key; +}; + +struct bob_signal_protocol_parameters +{ + signal_type_base base; + ratchet_identity_key_pair *our_identity_key; + ec_key_pair *our_signed_pre_key; + ec_key_pair *our_one_time_pre_key; /* optional */ + ec_key_pair *our_ratchet_key; + ec_public_key *their_identity_key; + ec_public_key *their_base_key; +}; + +int symmetric_signal_protocol_parameters_create( + symmetric_signal_protocol_parameters **parameters, + ratchet_identity_key_pair *our_identity_key, + ec_key_pair *our_base_key, + ec_key_pair *our_ratchet_key, + ec_public_key *their_base_key, + ec_public_key *their_ratchet_key, + ec_public_key *their_identity_key) +{ + symmetric_signal_protocol_parameters *result = 0; + + if(!our_identity_key || !our_base_key || !our_ratchet_key + || !their_base_key || !their_ratchet_key || !their_identity_key) { + return SG_ERR_INVAL; + } + + result = malloc(sizeof(symmetric_signal_protocol_parameters)); + if(!result) { + return SG_ERR_NOMEM; + } + + memset(result, 0, sizeof(symmetric_signal_protocol_parameters)); + + SIGNAL_INIT(result, symmetric_signal_protocol_parameters_destroy); + SIGNAL_REF(our_identity_key); + SIGNAL_REF(our_base_key); + SIGNAL_REF(our_ratchet_key); + SIGNAL_REF(their_base_key); + SIGNAL_REF(their_ratchet_key); + SIGNAL_REF(their_identity_key); + result->our_identity_key = our_identity_key; + result->our_base_key = our_base_key; + result->our_ratchet_key = our_ratchet_key; + result->their_base_key = their_base_key; + result->their_ratchet_key = their_ratchet_key; + result->their_identity_key = their_identity_key; + + *parameters = result; + return 0; +} + +ratchet_identity_key_pair *symmetric_signal_protocol_parameters_get_our_identity_key(const symmetric_signal_protocol_parameters *parameters) +{ + assert(parameters); + return parameters->our_identity_key; +} + +ec_key_pair *symmetric_signal_protocol_parameters_get_our_base_key(const symmetric_signal_protocol_parameters *parameters) +{ + assert(parameters); + return parameters->our_base_key; +} + +ec_key_pair *symmetric_signal_protocol_parameters_get_our_ratchet_key(const symmetric_signal_protocol_parameters *parameters) +{ + assert(parameters); + return parameters->our_ratchet_key; +} + +ec_public_key *symmetric_signal_protocol_parameters_get_their_base_key(const symmetric_signal_protocol_parameters *parameters) +{ + assert(parameters); + return parameters->their_base_key; +} + +ec_public_key *symmetric_signal_protocol_parameters_get_their_ratchet_key(const symmetric_signal_protocol_parameters *parameters) +{ + assert(parameters); + return parameters->their_ratchet_key; +} + +ec_public_key *symmetric_signal_protocol_parameters_get_their_identity_key(const symmetric_signal_protocol_parameters *parameters) +{ + assert(parameters); + return parameters->their_identity_key; +} + +void symmetric_signal_protocol_parameters_destroy(signal_type_base *type) +{ + symmetric_signal_protocol_parameters *parameters = (symmetric_signal_protocol_parameters *)type; + + SIGNAL_UNREF(parameters->our_identity_key); + SIGNAL_UNREF(parameters->our_base_key); + SIGNAL_UNREF(parameters->our_ratchet_key); + SIGNAL_UNREF(parameters->their_base_key); + SIGNAL_UNREF(parameters->their_ratchet_key); + SIGNAL_UNREF(parameters->their_identity_key); + + free(parameters); +} + +int alice_signal_protocol_parameters_create( + alice_signal_protocol_parameters **parameters, + ratchet_identity_key_pair *our_identity_key, + ec_key_pair *our_base_key, + ec_public_key *their_identity_key, + ec_public_key *their_signed_pre_key, + ec_public_key *their_one_time_pre_key, + ec_public_key *their_ratchet_key) +{ + alice_signal_protocol_parameters *result = 0; + + /* Only "their_one_time_pre_key" is allowed to be null */ + if(!our_identity_key || !our_base_key || !their_identity_key + || !their_signed_pre_key || !their_ratchet_key) { + return SG_ERR_INVAL; + } + + result = malloc(sizeof(alice_signal_protocol_parameters)); + if(!result) { + return SG_ERR_NOMEM; + } + + memset(result, 0, sizeof(alice_signal_protocol_parameters)); + + SIGNAL_INIT(result, alice_signal_protocol_parameters_destroy); + SIGNAL_REF(our_identity_key); + SIGNAL_REF(our_base_key); + SIGNAL_REF(their_identity_key); + SIGNAL_REF(their_signed_pre_key); + SIGNAL_REF(their_ratchet_key); + result->our_identity_key = our_identity_key; + result->our_base_key = our_base_key; + result->their_identity_key = their_identity_key; + result->their_signed_pre_key = their_signed_pre_key; + result->their_ratchet_key = their_ratchet_key; + + if(their_one_time_pre_key) { + SIGNAL_REF(their_one_time_pre_key); + result->their_one_time_pre_key = their_one_time_pre_key; + } + + *parameters = result; + return 0; +} + +void alice_signal_protocol_parameters_destroy(signal_type_base *type) +{ + alice_signal_protocol_parameters *parameters = (alice_signal_protocol_parameters *)type; + + SIGNAL_UNREF(parameters->our_identity_key); + SIGNAL_UNREF(parameters->our_base_key); + SIGNAL_UNREF(parameters->their_identity_key); + SIGNAL_UNREF(parameters->their_signed_pre_key); + SIGNAL_UNREF(parameters->their_ratchet_key); + + if(parameters->their_one_time_pre_key) { + SIGNAL_UNREF(parameters->their_one_time_pre_key); + } + + free(parameters); +} + +int bob_signal_protocol_parameters_create( + bob_signal_protocol_parameters **parameters, + ratchet_identity_key_pair *our_identity_key, + ec_key_pair *our_signed_pre_key, + ec_key_pair *our_one_time_pre_key, + ec_key_pair *our_ratchet_key, + ec_public_key *their_identity_key, + ec_public_key *their_base_key) +{ + bob_signal_protocol_parameters *result = 0; + + /* Only "our_one_time_pre_key" is allowed to be null */ + if(!our_identity_key || !our_signed_pre_key || !our_ratchet_key + || !their_identity_key || !their_base_key) { + return SG_ERR_INVAL; + } + + result = malloc(sizeof(bob_signal_protocol_parameters)); + if(!result) { + return SG_ERR_NOMEM; + } + + memset(result, 0, sizeof(bob_signal_protocol_parameters)); + + SIGNAL_INIT(result, bob_signal_protocol_parameters_destroy); + SIGNAL_REF(our_identity_key); + SIGNAL_REF(our_signed_pre_key); + SIGNAL_REF(our_ratchet_key); + SIGNAL_REF(their_identity_key); + SIGNAL_REF(their_base_key); + result->our_identity_key = our_identity_key; + result->our_signed_pre_key = our_signed_pre_key; + result->our_ratchet_key = our_ratchet_key; + result->their_identity_key = their_identity_key; + result->their_base_key = their_base_key; + + if(our_one_time_pre_key) { + SIGNAL_REF(our_one_time_pre_key); + result->our_one_time_pre_key = our_one_time_pre_key; + } + + *parameters = result; + return 0; +} + +void bob_signal_protocol_parameters_destroy(signal_type_base *type) +{ + bob_signal_protocol_parameters *parameters = (bob_signal_protocol_parameters *)type; + + SIGNAL_UNREF(parameters->our_identity_key); + SIGNAL_UNREF(parameters->our_signed_pre_key); + SIGNAL_UNREF(parameters->our_ratchet_key); + SIGNAL_UNREF(parameters->their_identity_key); + SIGNAL_UNREF(parameters->their_base_key); + + if(parameters->our_one_time_pre_key) { + SIGNAL_UNREF(parameters->our_one_time_pre_key); + } + + free(parameters); +} + +int ratcheting_session_calculate_derived_keys(ratchet_root_key **root_key, ratchet_chain_key **chain_key, + uint8_t *secret, size_t secret_len, signal_context *global_context) +{ + int result = 0; + ssize_t result_size = 0; + hkdf_context *kdf = 0; + ratchet_root_key *root_key_result = 0; + ratchet_chain_key *chain_key_result = 0; + uint8_t *output = 0; + uint8_t salt[HASH_OUTPUT_SIZE]; + static const char key_info[] = "WhisperText"; + + result = hkdf_create(&kdf, 3, global_context); + if(result < 0) { + goto complete; + } + + memset(salt, 0, sizeof(salt)); + + result_size = hkdf_derive_secrets(kdf, &output, + secret, secret_len, + salt, sizeof(salt), + (uint8_t *)key_info, sizeof(key_info) - 1, 64); + if(result_size != 64) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = ratchet_root_key_create(&root_key_result, kdf, output, 32, global_context); + if(result < 0) { + goto complete; + } + + result = ratchet_chain_key_create(&chain_key_result, kdf, output + 32, 32, 0, global_context); + if(result < 0) { + goto complete; + } + +complete: + if(kdf) { + SIGNAL_UNREF(kdf); + } + if(output) { + free(output); + } + + if(result < 0) { + if(root_key_result) { + SIGNAL_UNREF(root_key_result); + } + if(chain_key_result) { + SIGNAL_UNREF(chain_key_result); + } + } + else { + *root_key = root_key_result; + *chain_key = chain_key_result; + } + + return result; +} + +int ratcheting_session_symmetric_is_alice(symmetric_signal_protocol_parameters *parameters) +{ + //FIXME Java code checks if our_base_key < their_base_key + // This comparison may not return the same result. However, we should find + // out whether the Java code was doing the right thing and why. + return ec_public_key_memcmp( + ec_key_pair_get_public(parameters->our_base_key), + parameters->their_base_key) < 0; +} + +int ratcheting_session_symmetric_initialize( + session_state *state, + symmetric_signal_protocol_parameters *parameters, + signal_context *global_context) +{ + int result = 0; + + assert(state); + assert(parameters); + assert(global_context); + + if(ratcheting_session_symmetric_is_alice(parameters)) { + alice_signal_protocol_parameters *alice_parameters = 0; + result = alice_signal_protocol_parameters_create(&alice_parameters, + parameters->our_identity_key, + parameters->our_base_key, + parameters->their_identity_key, + parameters->their_base_key, + 0, + parameters->their_ratchet_key); + if(result >= 0) { + result = ratcheting_session_alice_initialize(state, alice_parameters, global_context); + } + if(alice_parameters) { + SIGNAL_UNREF(alice_parameters); + } + } + else { + bob_signal_protocol_parameters *bob_parameters = 0; + result = bob_signal_protocol_parameters_create(&bob_parameters, + parameters->our_identity_key, + parameters->our_base_key, + 0, + parameters->our_ratchet_key, + parameters->their_identity_key, + parameters->their_base_key); + if(result >= 0) { + result = ratcheting_session_bob_initialize(state, bob_parameters, global_context); + } + if(bob_parameters) { + SIGNAL_UNREF(bob_parameters); + } + } + return result; +} + +int ratcheting_session_alice_initialize( + session_state *state, + alice_signal_protocol_parameters *parameters, + signal_context *global_context) +{ + int result = 0; + uint8_t *agreement = 0; + int agreement_len = 0; + ec_key_pair *sending_ratchet_key = 0; + ratchet_root_key *derived_root = 0; + ratchet_chain_key *derived_chain = 0; + ratchet_root_key *sending_chain_root = 0; + ratchet_chain_key *sending_chain_key = 0; + struct vpool vp; + uint8_t *secret = 0; + size_t secret_len = 0; + uint8_t discontinuity_data[32]; + + assert(state); + assert(parameters); + assert(global_context); + + vpool_init(&vp, 1024, 0); + + result = curve_generate_key_pair(global_context, &sending_ratchet_key); + if(result < 0) { + goto complete; + } + + memset(discontinuity_data, 0xFF, sizeof(discontinuity_data)); + if(!vpool_insert(&vp, vpool_get_length(&vp), discontinuity_data, sizeof(discontinuity_data))) { + result = SG_ERR_NOMEM; + goto complete; + } + + agreement_len = curve_calculate_agreement(&agreement, + parameters->their_signed_pre_key, parameters->our_identity_key->private_key); + if(agreement_len < 0) { + result = agreement_len; + goto complete; + } + if(vpool_insert(&vp, vpool_get_length(&vp), agreement, (size_t)agreement_len)) { + free(agreement); agreement = 0; agreement_len = 0; + } + else { + result = SG_ERR_NOMEM; + goto complete; + } + + agreement_len = curve_calculate_agreement(&agreement, + parameters->their_identity_key, ec_key_pair_get_private(parameters->our_base_key)); + if(agreement_len < 0) { + result = agreement_len; + goto complete; + } + if(vpool_insert(&vp, vpool_get_length(&vp), agreement, (size_t)agreement_len)) { + free(agreement); agreement = 0; agreement_len = 0; + } + else { + result = SG_ERR_NOMEM; + goto complete; + } + + agreement_len = curve_calculate_agreement(&agreement, + parameters->their_signed_pre_key, ec_key_pair_get_private(parameters->our_base_key)); + if(agreement_len < 0) { + result = agreement_len; + goto complete; + } + if(vpool_insert(&vp, vpool_get_length(&vp), agreement, (size_t)agreement_len)) { + free(agreement); agreement = 0; agreement_len = 0; + } + else { + result = SG_ERR_NOMEM; + goto complete; + } + + if(parameters->their_one_time_pre_key) { + agreement_len = curve_calculate_agreement(&agreement, + parameters->their_one_time_pre_key, ec_key_pair_get_private(parameters->our_base_key)); + if(agreement_len < 0) { + result = agreement_len; + goto complete; + } + if(vpool_insert(&vp, vpool_get_length(&vp), agreement, (size_t)agreement_len)) { + free(agreement); agreement = 0; agreement_len = 0; + } + else { + result = SG_ERR_NOMEM; + goto complete; + } + } + + if(vpool_is_empty(&vp)) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + secret = vpool_get_buf(&vp); + secret_len = vpool_get_length(&vp); + + result = ratcheting_session_calculate_derived_keys(&derived_root, &derived_chain, secret, secret_len, global_context); + if(result < 0) { + goto complete; + } + + result = ratchet_root_key_create_chain(derived_root, + &sending_chain_root, &sending_chain_key, + parameters->their_ratchet_key, + ec_key_pair_get_private(sending_ratchet_key)); + if(result < 0) { + goto complete; + } + + result = session_state_add_receiver_chain(state, parameters->their_ratchet_key, derived_chain); + if(result < 0) { + goto complete; + } + + session_state_set_session_version(state, CIPHERTEXT_CURRENT_VERSION); + session_state_set_remote_identity_key(state, parameters->their_identity_key); + session_state_set_local_identity_key(state, parameters->our_identity_key->public_key); + session_state_set_sender_chain(state, sending_ratchet_key, sending_chain_key); + session_state_set_root_key(state, sending_chain_root); + +complete: + vpool_final(&vp); + if(agreement) { + free(agreement); + } + if(sending_ratchet_key) { + SIGNAL_UNREF(sending_ratchet_key); + } + if(derived_root) { + SIGNAL_UNREF(derived_root); + } + if(derived_chain) { + SIGNAL_UNREF(derived_chain); + } + if(sending_chain_root) { + SIGNAL_UNREF(sending_chain_root); + } + if(sending_chain_key) { + SIGNAL_UNREF(sending_chain_key); + } + + return result; +} + +int ratcheting_session_bob_initialize( + session_state *state, + bob_signal_protocol_parameters *parameters, + signal_context *global_context) +{ + int result = 0; + uint8_t *agreement = 0; + int agreement_len = 0; + ratchet_root_key *derived_root = 0; + ratchet_chain_key *derived_chain = 0; + struct vpool vp; + uint8_t *secret = 0; + size_t secret_len = 0; + uint8_t discontinuity_data[32]; + + assert(state); + assert(parameters); + assert(global_context); + + vpool_init(&vp, 1024, 0); + + memset(discontinuity_data, 0xFF, sizeof(discontinuity_data)); + if(!vpool_insert(&vp, vpool_get_length(&vp), discontinuity_data, sizeof(discontinuity_data))) { + result = SG_ERR_NOMEM; + goto complete; + } + + agreement_len = curve_calculate_agreement(&agreement, + parameters->their_identity_key, ec_key_pair_get_private(parameters->our_signed_pre_key)); + if(agreement_len < 0) { + result = agreement_len; + goto complete; + } + if(vpool_insert(&vp, vpool_get_length(&vp), agreement, (size_t)agreement_len)) { + free(agreement); agreement = 0; agreement_len = 0; + } + else { + result = SG_ERR_NOMEM; + goto complete; + } + + agreement_len = curve_calculate_agreement(&agreement, + parameters->their_base_key, parameters->our_identity_key->private_key); + if(agreement_len < 0) { + result = agreement_len; + goto complete; + } + if(vpool_insert(&vp, vpool_get_length(&vp), agreement, (size_t)agreement_len)) { + free(agreement); agreement = 0; agreement_len = 0; + } + else { + result = SG_ERR_NOMEM; + goto complete; + } + + agreement_len = curve_calculate_agreement(&agreement, + parameters->their_base_key, ec_key_pair_get_private(parameters->our_signed_pre_key)); + if(agreement_len < 0) { + result = agreement_len; + goto complete; + } + if(vpool_insert(&vp, vpool_get_length(&vp), agreement, (size_t)agreement_len)) { + free(agreement); agreement = 0; agreement_len = 0; + } + else { + result = SG_ERR_NOMEM; + goto complete; + } + + if(parameters->our_one_time_pre_key) { + agreement_len = curve_calculate_agreement(&agreement, + parameters->their_base_key, ec_key_pair_get_private(parameters->our_one_time_pre_key)); + if(agreement_len < 0) { + result = agreement_len; + goto complete; + } + if(vpool_insert(&vp, vpool_get_length(&vp), agreement, (size_t)agreement_len)) { + free(agreement); agreement = 0; agreement_len = 0; + } + else { + result = SG_ERR_NOMEM; + goto complete; + } + } + + if(vpool_is_empty(&vp)) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + secret = vpool_get_buf(&vp); + secret_len = vpool_get_length(&vp); + + result = ratcheting_session_calculate_derived_keys(&derived_root, &derived_chain, secret, secret_len, global_context); + +complete: + if(result >= 0) { + session_state_set_session_version(state, CIPHERTEXT_CURRENT_VERSION); + session_state_set_remote_identity_key(state, parameters->their_identity_key); + session_state_set_local_identity_key(state, parameters->our_identity_key->public_key); + session_state_set_sender_chain(state, parameters->our_ratchet_key, derived_chain); + session_state_set_root_key(state, derived_root); + } + + vpool_final(&vp); + if(agreement) { + free(agreement); + } + if(derived_root) { + SIGNAL_UNREF(derived_root); + } + if(derived_chain) { + SIGNAL_UNREF(derived_chain); + } + + return result; +} diff --git a/Sources/libsignal/sender_key.c b/Sources/libsignal/sender_key.c new file mode 100755 index 0000000..31d7499 --- /dev/null +++ b/Sources/libsignal/sender_key.c @@ -0,0 +1,285 @@ +#include "sender_key.h" + +#include +#include + +#include "hkdf.h" +#include "signal_protocol_internal.h" + +#define HASH_OUTPUT_SIZE 32 + +struct sender_message_key { + signal_type_base base; + uint32_t iteration; + signal_buffer *iv; + signal_buffer *cipher_key; + signal_buffer *seed; + signal_context *global_context; +}; + +struct sender_chain_key { + signal_type_base base; + uint32_t iteration; + signal_buffer *chain_key; + signal_context *global_context; +}; + +static int sender_chain_key_get_derivative(signal_buffer **derivative, uint8_t seed, signal_buffer *key, + signal_context *global_context); + +int sender_message_key_create(sender_message_key **key, + uint32_t iteration, signal_buffer *seed, + signal_context *global_context) +{ + sender_message_key *result = 0; + int ret = 0; + ssize_t ret_size = 0; + hkdf_context *kdf = 0; + static const char info_material[] = "WhisperGroup"; + uint8_t salt[HASH_OUTPUT_SIZE]; + uint8_t *derivative = 0; + + assert(global_context); + + if(!seed) { + return SG_ERR_INVAL; + } + + memset(salt, 0, sizeof(salt)); + + result = malloc(sizeof(sender_message_key)); + if(!result) { + return SG_ERR_NOMEM; + } + + SIGNAL_INIT(result, sender_message_key_destroy); + + ret = hkdf_create(&kdf, 3, global_context); + if(ret < 0) { + goto complete; + } + + ret_size = hkdf_derive_secrets(kdf, &derivative, + signal_buffer_data(seed), signal_buffer_len(seed), + salt, sizeof(salt), + (uint8_t *)info_material, sizeof(info_material) - 1, 48); + if(ret_size != 48) { + ret = (ret_size < 0) ? (int)ret_size : SG_ERR_UNKNOWN; + signal_log(global_context, SG_LOG_WARNING, "hkdf_derive_secrets failed"); + goto complete; + } + + result->iteration = iteration; + + result->seed = signal_buffer_copy(seed); + if(!result->seed) { + ret = SG_ERR_NOMEM; + goto complete; + } + + result->iv = signal_buffer_create(derivative, 16); + if(!result->iv) { + ret = SG_ERR_NOMEM; + goto complete; + } + + result->cipher_key = signal_buffer_create(derivative + 16, 32); + if(!result->cipher_key) { + ret = SG_ERR_NOMEM; + goto complete; + } + + result->global_context = global_context; + +complete: + SIGNAL_UNREF(kdf); + if(derivative) { + free(derivative); + } + if(ret < 0) { + SIGNAL_UNREF(result); + } + else { + ret = 0; + *key = result; + } + return ret; +} + +uint32_t sender_message_key_get_iteration(sender_message_key *key) +{ + assert(key); + return key->iteration; +} + +signal_buffer *sender_message_key_get_iv(sender_message_key *key) +{ + assert(key); + return key->iv; +} + +signal_buffer *sender_message_key_get_cipher_key(sender_message_key *key) +{ + assert(key); + return key->cipher_key; +} + +signal_buffer *sender_message_key_get_seed(sender_message_key *key) +{ + assert(key); + return key->seed; +} + +void sender_message_key_destroy(signal_type_base *type) +{ + sender_message_key *key = (sender_message_key *)type; + signal_buffer_bzero_free(key->iv); + signal_buffer_bzero_free(key->cipher_key); + signal_buffer_bzero_free(key->seed); + free(key); +} + +int sender_chain_key_create(sender_chain_key **key, + uint32_t iteration, signal_buffer *chain_key, + signal_context *global_context) +{ + sender_chain_key *result = 0; + int ret = 0; + + assert(global_context); + + if(!chain_key) { + return SG_ERR_INVAL; + } + + result = malloc(sizeof(sender_chain_key)); + if(!result) { + return SG_ERR_NOMEM; + } + + SIGNAL_INIT(result, sender_chain_key_destroy); + + result->iteration = iteration; + + result->chain_key = signal_buffer_copy(chain_key); + if(!result->chain_key) { + ret = SG_ERR_NOMEM; + goto complete; + } + + result->global_context = global_context; + +complete: + if(ret < 0) { + SIGNAL_UNREF(result); + } + else { + ret = 0; + *key = result; + } + return ret; +} + +uint32_t sender_chain_key_get_iteration(sender_chain_key *key) +{ + assert(key); + return key->iteration; +} + +int sender_chain_key_create_message_key(sender_chain_key *key, sender_message_key **message_key) +{ + static const uint8_t MESSAGE_KEY_SEED = 0x01; + int ret = 0; + signal_buffer *derivative = 0; + sender_message_key *result = 0; + + assert(key); + + ret = sender_chain_key_get_derivative(&derivative, MESSAGE_KEY_SEED, key->chain_key, key->global_context); + if(ret < 0) { + goto complete; + } + + ret = sender_message_key_create(&result, key->iteration, derivative, key->global_context); + +complete: + signal_buffer_free(derivative); + if(ret >= 0) { + ret = 0; + *message_key = result; + } + return ret; +} + +int sender_chain_key_create_next(sender_chain_key *key, sender_chain_key **next_key) +{ + static const uint8_t CHAIN_KEY_SEED = 0x02; + int ret = 0; + signal_buffer *derivative = 0; + sender_chain_key *result = 0; + + assert(key); + + ret = sender_chain_key_get_derivative(&derivative, CHAIN_KEY_SEED, key->chain_key, key->global_context); + if(ret < 0) { + goto complete; + } + + ret = sender_chain_key_create(&result, key->iteration + 1, derivative, key->global_context); + +complete: + signal_buffer_free(derivative); + if(ret >= 0) { + ret = 0; + *next_key = result; + } + return ret; +} + +signal_buffer *sender_chain_key_get_seed(sender_chain_key *key) +{ + assert(key); + return key->chain_key; +} + +void sender_chain_key_destroy(signal_type_base *type) +{ + sender_chain_key *key = (sender_chain_key *)type; + signal_buffer_bzero_free(key->chain_key); + free(key); +} + +int sender_chain_key_get_derivative(signal_buffer **derivative, uint8_t seed, signal_buffer *key, + signal_context *global_context) +{ + int result = 0; + signal_buffer *output_buffer = 0; + void *hmac_context = 0; + + result = signal_hmac_sha256_init(global_context, &hmac_context, + signal_buffer_data(key), signal_buffer_len(key)); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_update(global_context, hmac_context, &seed, sizeof(seed)); + if(result < 0) { + goto complete; + } + + result = signal_hmac_sha256_final(global_context, hmac_context, &output_buffer); + if(result < 0) { + goto complete; + } + +complete: + signal_hmac_sha256_cleanup(global_context, hmac_context); + + if(result < 0) { + signal_buffer_free(output_buffer); + } + else { + *derivative = output_buffer; + } + return result; +} diff --git a/Sources/libsignal/sender_key.h b/Sources/libsignal/sender_key.h new file mode 100755 index 0000000..113bb5d --- /dev/null +++ b/Sources/libsignal/sender_key.h @@ -0,0 +1,34 @@ +#ifndef SENDER_KEY +#define SENDER_KEY + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +int sender_message_key_create(sender_message_key **key, + uint32_t iteration, signal_buffer *seed, + signal_context *global_context); +uint32_t sender_message_key_get_iteration(sender_message_key *key); +signal_buffer *sender_message_key_get_iv(sender_message_key *key); +signal_buffer *sender_message_key_get_cipher_key(sender_message_key *key); +signal_buffer *sender_message_key_get_seed(sender_message_key *key); +void sender_message_key_destroy(signal_type_base *type); + +int sender_chain_key_create(sender_chain_key **key, + uint32_t iteration, signal_buffer *chain_key, + signal_context *global_context); +uint32_t sender_chain_key_get_iteration(sender_chain_key *key); +int sender_chain_key_create_message_key(sender_chain_key *key, sender_message_key **message_key); +int sender_chain_key_create_next(sender_chain_key *key, sender_chain_key **next_key); +signal_buffer *sender_chain_key_get_seed(sender_chain_key *key); +void sender_chain_key_destroy(signal_type_base *type); + +#ifdef __cplusplus +} +#endif + +#endif /* SENDER_KEY */ diff --git a/Sources/libsignal/sender_key_record.c b/Sources/libsignal/sender_key_record.c new file mode 100755 index 0000000..e6057ae --- /dev/null +++ b/Sources/libsignal/sender_key_record.c @@ -0,0 +1,377 @@ +#include "sender_key_record.h" + +#include + +#include "sender_key_state.h" +#include "sender_key.h" +#include "utlist.h" +#include "LocalStorageProtocol.pb-c.h" +#include "signal_protocol_internal.h" + +#define MAX_STATES 5 + +typedef struct sender_key_state_node { + sender_key_state *state; + struct sender_key_state_node *prev, *next; +} sender_key_state_node; + +struct sender_key_record +{ + signal_type_base base; + sender_key_state_node *sender_key_states_head; + signal_buffer *user_record; + signal_context *global_context; +}; + +int sender_key_record_create(sender_key_record **record, + signal_context *global_context) +{ + sender_key_record *result = malloc(sizeof(sender_key_record)); + if(!result) { + return SG_ERR_NOMEM; + } + memset(result, 0, sizeof(sender_key_record)); + SIGNAL_INIT(result, sender_key_record_destroy); + + result->global_context = global_context; + + *record = result; + return 0; +} + +int sender_key_record_serialize(signal_buffer **buffer, sender_key_record *record) +{ + int result = 0; + size_t result_size = 0; + unsigned int i = 0; + Textsecure__SenderKeyRecordStructure record_structure = TEXTSECURE__SENDER_KEY_RECORD_STRUCTURE__INIT; + sender_key_state_node *cur_node = 0; + signal_buffer *result_buf = 0; + uint8_t *data; + size_t len; + + if(record->sender_key_states_head) { + size_t count; + DL_COUNT(record->sender_key_states_head, cur_node, count); + + if(count > SIZE_MAX / sizeof(Textsecure__SenderKeyStateStructure *)) { + result = SG_ERR_NOMEM; + goto complete; + } + + record_structure.senderkeystates = malloc(sizeof(Textsecure__SenderKeyStateStructure *) * count); + if(!record_structure.senderkeystates) { + result = SG_ERR_NOMEM; + goto complete; + } + + i = 0; + DL_FOREACH(record->sender_key_states_head, cur_node) { + record_structure.senderkeystates[i] = malloc(sizeof(Textsecure__SenderKeyStateStructure)); + if(!record_structure.senderkeystates[i]) { + result = SG_ERR_NOMEM; + break; + } + textsecure__sender_key_state_structure__init(record_structure.senderkeystates[i]); + + result = sender_key_state_serialize_prepare(cur_node->state, record_structure.senderkeystates[i]); + if(result < 0) { + break; + } + i++; + } + record_structure.n_senderkeystates = i; + if(result < 0) { + goto complete; + } + } + + len = textsecure__sender_key_record_structure__get_packed_size(&record_structure); + + result_buf = signal_buffer_alloc(len); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + result_size = textsecure__sender_key_record_structure__pack(&record_structure, data); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(record_structure.senderkeystates) { + for(i = 0; i < record_structure.n_senderkeystates; i++) { + if(record_structure.senderkeystates[i]) { + sender_key_state_serialize_prepare_free(record_structure.senderkeystates[i]); + } + } + free(record_structure.senderkeystates); + } + + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int sender_key_record_deserialize(sender_key_record **record, const uint8_t *data, size_t len, signal_context *global_context) +{ + int result = 0; + sender_key_record *result_record = 0; + Textsecure__SenderKeyRecordStructure *record_structure = 0; + + record_structure = textsecure__sender_key_record_structure__unpack(0, len, data); + if(!record_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + result = sender_key_record_create(&result_record, global_context); + if(result < 0) { + goto complete; + } + + if(record_structure->n_senderkeystates > 0) { + unsigned int i; + sender_key_state_node *state_node = 0; + sender_key_state *state_element = 0; + for(i = 0; i < record_structure->n_senderkeystates; i++) { + result = sender_key_state_deserialize_protobuf(&state_element, record_structure->senderkeystates[i], global_context); + if(result < 0) { + goto complete; + } + + state_node = malloc(sizeof(sender_key_state_node)); + if(!state_node) { + result = SG_ERR_NOMEM; + goto complete; + } + + state_node->state = state_element; + DL_APPEND(result_record->sender_key_states_head, state_node); + } + } + +complete: + if(record_structure) { + textsecure__sender_key_record_structure__free_unpacked(record_structure, 0); + } + if(result_record) { + if(result < 0) { + SIGNAL_UNREF(result_record); + } + else { + *record = result_record; + } + } + return result; +} + +int sender_key_record_copy(sender_key_record **record, sender_key_record *other_record, signal_context *global_context) +{ + int result = 0; + sender_key_record *result_record = 0; + signal_buffer *buffer = 0; + uint8_t *data; + size_t len; + + assert(other_record); + assert(global_context); + + result = sender_key_record_serialize(&buffer, other_record); + if(result < 0) { + goto complete; + } + + data = signal_buffer_data(buffer); + len = signal_buffer_len(buffer); + + result = sender_key_record_deserialize(&result_record, data, len, global_context); + if(result < 0) { + goto complete; + } + if(other_record->user_record) { + result_record->user_record = signal_buffer_copy(other_record->user_record); + if(!result_record->user_record) { + result = SG_ERR_NOMEM; + goto complete; + } + } + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + if(result >= 0) { + *record = result_record; + } + else { + SIGNAL_UNREF(result_record); + } + return result; +} + +int sender_key_record_is_empty(sender_key_record *record) +{ + assert(record); + if(record->sender_key_states_head) { + return 0; + } + else { + return 1; + } +} + +int sender_key_record_get_sender_key_state(sender_key_record *record, sender_key_state **state) +{ + assert(record); + if(record->sender_key_states_head) { + *state = record->sender_key_states_head->state; + return 0; + } + else { + signal_log(record->global_context, SG_LOG_ERROR, "No key state in record!"); + return SG_ERR_INVALID_KEY_ID; + } +} + +int sender_key_record_get_sender_key_state_by_id(sender_key_record *record, sender_key_state **state, uint32_t key_id) +{ + sender_key_state_node *cur_node; + assert(record); + + DL_FOREACH(record->sender_key_states_head, cur_node) { + if(sender_key_state_get_key_id(cur_node->state) == key_id) { + *state = cur_node->state; + return 0; + } + } + + signal_log(record->global_context, SG_LOG_ERROR, "No keys for: %d", key_id); + return SG_ERR_INVALID_KEY_ID; +} + +static int sender_key_record_add_sender_key_state_impl(sender_key_record *record, + uint32_t id, uint32_t iteration, signal_buffer *chain_key, + ec_public_key *signature_public_key, ec_private_key *signature_private_key) +{ + int result = 0; + sender_chain_key *chain_key_element = 0; + sender_key_state *state = 0; + sender_key_state_node *state_node = 0; + int count; + assert(record); + + result = sender_chain_key_create(&chain_key_element, iteration, chain_key, record->global_context); + if(result < 0) { + goto complete; + } + + result = sender_key_state_create(&state, id, chain_key_element, + signature_public_key, signature_private_key, + record->global_context); + if(result < 0) { + goto complete; + } + + state_node = malloc(sizeof(sender_key_state_node)); + if(!state_node) { + result = SG_ERR_NOMEM; + goto complete; + } + + state_node->state = state; + DL_PREPEND(record->sender_key_states_head, state_node); + + DL_COUNT(record->sender_key_states_head, state_node, count); + while(count > MAX_STATES) { + state_node = record->sender_key_states_head->prev; + DL_DELETE(record->sender_key_states_head, state_node); + if(state_node->state) { + SIGNAL_UNREF(state_node->state); + } + free(state_node); + --count; + } + +complete: + SIGNAL_UNREF(chain_key_element); + if(result < 0) { + SIGNAL_UNREF(state); + } + return result; +} + +int sender_key_record_add_sender_key_state(sender_key_record *record, + uint32_t id, uint32_t iteration, signal_buffer *chain_key, ec_public_key *signature_key) +{ + int result = sender_key_record_add_sender_key_state_impl( + record, id, iteration, chain_key, signature_key, 0); + return result; +} + +int sender_key_record_set_sender_key_state(sender_key_record *record, + uint32_t id, uint32_t iteration, signal_buffer *chain_key, ec_key_pair *signature_key_pair) +{ + int result = 0; + sender_key_state_node *cur_node; + sender_key_state_node *tmp_node; + assert(record); + + DL_FOREACH_SAFE(record->sender_key_states_head, cur_node, tmp_node) { + DL_DELETE(record->sender_key_states_head, cur_node); + if(cur_node->state) { + SIGNAL_UNREF(cur_node->state); + } + free(cur_node); + } + record->sender_key_states_head = 0; + + result = sender_key_record_add_sender_key_state_impl( + record, id, iteration, chain_key, + ec_key_pair_get_public(signature_key_pair), + ec_key_pair_get_private(signature_key_pair)); + return result; +} + +signal_buffer *sender_key_record_get_user_record(const sender_key_record *record) +{ + assert(record); + return record->user_record; +} + +void sender_key_record_set_user_record(sender_key_record *record, signal_buffer *user_record) +{ + assert(record); + if(record->user_record) { + signal_buffer_free(record->user_record); + } + record->user_record = user_record; +} + +void sender_key_record_destroy(signal_type_base *type) +{ + sender_key_record *record = (sender_key_record *)type; + sender_key_state_node *cur_node; + sender_key_state_node *tmp_node; + + DL_FOREACH_SAFE(record->sender_key_states_head, cur_node, tmp_node) { + DL_DELETE(record->sender_key_states_head, cur_node); + if(cur_node->state) { + SIGNAL_UNREF(cur_node->state); + } + free(cur_node); + } + record->sender_key_states_head = 0; + + if(record->user_record) { + signal_buffer_free(record->user_record); + } + + free(record); +} diff --git a/Sources/libsignal/sender_key_state.c b/Sources/libsignal/sender_key_state.c new file mode 100755 index 0000000..0b19cb7 --- /dev/null +++ b/Sources/libsignal/sender_key_state.c @@ -0,0 +1,556 @@ +#include "sender_key_state.h" + +#include +#include +#include + +#include "sender_key.h" +#include "utlist.h" +#include "LocalStorageProtocol.pb-c.h" +#include "signal_protocol_internal.h" + +#define MAX_MESSAGE_KEYS 2000 + +typedef struct sender_message_key_node { + sender_message_key *key; + struct sender_message_key_node *prev, *next; +} sender_message_key_node; + +struct sender_key_state +{ + signal_type_base base; + + uint32_t key_id; + sender_chain_key *chain_key; + ec_public_key *signature_public_key; + ec_private_key *signature_private_key; + sender_message_key_node *message_keys_head; + + signal_context *global_context; +}; + +int sender_key_state_create(sender_key_state **state, + uint32_t id, sender_chain_key *chain_key, + ec_public_key *signature_public_key, ec_private_key *signature_private_key, + signal_context *global_context) +{ + sender_key_state *result = 0; + + if(!chain_key || !signature_public_key) { + return SG_ERR_INVAL; + } + + result = malloc(sizeof(sender_key_state)); + if(!result) { + return SG_ERR_NOMEM; + } + memset(result, 0, sizeof(sender_key_state)); + SIGNAL_INIT(result, sender_key_state_destroy); + + result->key_id = id; + + SIGNAL_REF(chain_key); + result->chain_key = chain_key; + + SIGNAL_REF(signature_public_key); + result->signature_public_key = signature_public_key; + + if(signature_private_key) { + SIGNAL_REF(signature_private_key); + result->signature_private_key = signature_private_key; + } + + result->global_context = global_context; + + *state = result; + return 0; +} + +int sender_key_state_serialize(signal_buffer **buffer, sender_key_state *state) +{ + int result = 0; + size_t result_size = 0; + uint8_t *data; + size_t len; + Textsecure__SenderKeyStateStructure *state_structure = 0; + signal_buffer *result_buf = 0; + + state_structure = malloc(sizeof(Textsecure__SenderKeyStateStructure)); + if(!state_structure) { + result = SG_ERR_NOMEM; + goto complete; + } + textsecure__sender_key_state_structure__init(state_structure); + + result = sender_key_state_serialize_prepare(state, state_structure); + if(result < 0) { + goto complete; + } + + len = textsecure__sender_key_state_structure__get_packed_size(state_structure); + + result_buf = signal_buffer_alloc(len); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + result_size = textsecure__sender_key_state_structure__pack(state_structure, data); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(state_structure) { + sender_key_state_serialize_prepare_free(state_structure); + } + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int sender_key_state_deserialize(sender_key_state **state, const uint8_t *data, size_t len, signal_context *global_context) +{ + int result = 0; + Textsecure__SenderKeyStateStructure *state_structure = 0; + sender_key_state *result_state = 0; + + state_structure = textsecure__sender_key_state_structure__unpack(0, len, data); + if(!state_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + result = sender_key_state_deserialize_protobuf(&result_state, state_structure, global_context); + if(result < 0) { + goto complete; + } + +complete: + if(state_structure) { + textsecure__sender_key_state_structure__free_unpacked(state_structure, 0); + } + if(result_state) { + if(result < 0) { + SIGNAL_UNREF(result_state); + } + else { + *state = result_state; + } + } + + return result; +} + +int sender_key_state_serialize_prepare(sender_key_state *state, Textsecure__SenderKeyStateStructure *state_structure) +{ + int result = 0; + size_t i = 0; + Textsecure__SenderKeyStateStructure__SenderChainKey *chain_key_structure = 0; + Textsecure__SenderKeyStateStructure__SenderSigningKey *signing_key_structure = 0; + sender_message_key_node *cur_node = 0; + signal_buffer *chain_key_seed = 0; + + assert(state); + assert(state_structure); + + /* Sender key ID */ + state_structure->has_senderkeyid = 1; + state_structure->senderkeyid = state->key_id; + + /* Sender chain key */ + chain_key_structure = malloc(sizeof(Textsecure__SenderKeyStateStructure__SenderChainKey)); + if(!chain_key_structure) { + result = SG_ERR_NOMEM; + goto complete; + } + textsecure__sender_key_state_structure__sender_chain_key__init(chain_key_structure); + state_structure->senderchainkey = chain_key_structure; + + chain_key_structure->iteration = sender_chain_key_get_iteration(state->chain_key); + chain_key_structure->has_iteration = 1; + + chain_key_seed = sender_chain_key_get_seed(state->chain_key); + chain_key_structure->seed.data = signal_buffer_data(chain_key_seed); + chain_key_structure->seed.len = signal_buffer_len(chain_key_seed); + chain_key_structure->has_seed = 1; + + /* Sender signing key */ + signing_key_structure = malloc(sizeof(Textsecure__SenderKeyStateStructure__SenderSigningKey)); + if(!signing_key_structure) { + result = SG_ERR_NOMEM; + goto complete; + } + textsecure__sender_key_state_structure__sender_signing_key__init(signing_key_structure); + state_structure->sendersigningkey = signing_key_structure; + + if(state->signature_public_key) { + result = ec_public_key_serialize_protobuf(&(signing_key_structure->public_), state->signature_public_key); + if(result < 0) { + goto complete; + } + signing_key_structure->has_public_ = 1; + } + + if(state->signature_private_key) { + result = ec_private_key_serialize_protobuf(&(signing_key_structure->private_), state->signature_private_key); + if(result < 0) { + goto complete; + } + signing_key_structure->has_private_ = 1; + } + + /* Sender message keys */ + if(state->message_keys_head) { + size_t count; + DL_COUNT(state->message_keys_head, cur_node, count); + + if(count > SIZE_MAX / sizeof(Textsecure__SenderKeyStateStructure__SenderMessageKey *)) { + result = SG_ERR_NOMEM; + goto complete; + } + + state_structure->sendermessagekeys = malloc(sizeof(Textsecure__SenderKeyStateStructure__SenderMessageKey *) * count); + if(!state_structure->sendermessagekeys) { + result = SG_ERR_NOMEM; + goto complete; + } + + i = 0; + DL_FOREACH(state->message_keys_head, cur_node) { + signal_buffer *seed = 0; + state_structure->sendermessagekeys[i] = malloc(sizeof(Textsecure__SenderKeyStateStructure__SenderMessageKey)); + if(!state_structure->sendermessagekeys[i]) { + result = SG_ERR_NOMEM; + break; + } + textsecure__sender_key_state_structure__sender_message_key__init(state_structure->sendermessagekeys[i]); + + state_structure->sendermessagekeys[i]->iteration = sender_message_key_get_iteration(cur_node->key); + state_structure->sendermessagekeys[i]->has_iteration = 1; + + seed = sender_message_key_get_seed(cur_node->key); + state_structure->sendermessagekeys[i]->seed.data = signal_buffer_data(seed); + state_structure->sendermessagekeys[i]->seed.len = signal_buffer_len(seed); + state_structure->sendermessagekeys[i]->has_seed = 1; + + if(result < 0) { + break; + } + i++; + } + state_structure->n_sendermessagekeys = i; + if(result < 0) { + goto complete; + } + } + +complete: + return result; +} + +void sender_key_state_serialize_prepare_free(Textsecure__SenderKeyStateStructure *state_structure) +{ + unsigned int i = 0; + if(state_structure->senderchainkey) { + free(state_structure->senderchainkey); + } + if(state_structure->sendersigningkey) { + if(state_structure->sendersigningkey->public_.data) { + free(state_structure->sendersigningkey->public_.data); + } + if(state_structure->sendersigningkey->private_.data) { + free(state_structure->sendersigningkey->private_.data); + } + free(state_structure->sendersigningkey); + } + + if(state_structure->sendermessagekeys) { + for(i = 0; i < state_structure->n_sendermessagekeys; i++) { + if(state_structure->sendermessagekeys[i]) { + free(state_structure->sendermessagekeys[i]); + } + } + free(state_structure->sendermessagekeys); + } + free(state_structure); +} + +int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__SenderKeyStateStructure *state_structure, signal_context *global_context) +{ + int result = 0; + sender_key_state *result_state = 0; + sender_chain_key *chain_key = 0; + ec_public_key *signature_public_key = 0; + ec_private_key *signature_private_key = 0; + + if(state_structure->senderchainkey + && state_structure->senderchainkey->has_iteration + && state_structure->senderchainkey->has_seed) { + signal_buffer *seed_buffer = signal_buffer_create( + state_structure->senderchainkey->seed.data, + state_structure->senderchainkey->seed.len); + if(!seed_buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = sender_chain_key_create(&chain_key, + state_structure->senderchainkey->iteration, + seed_buffer, + global_context); + signal_buffer_free(seed_buffer); + if(result < 0) { + goto complete; + } + } + + if(state_structure->sendersigningkey) { + if(state_structure->sendersigningkey->has_public_) { + result = curve_decode_point(&signature_public_key, + state_structure->sendersigningkey->public_.data, + state_structure->sendersigningkey->public_.len, + global_context); + if(result < 0) { + goto complete; + } + } + if(state_structure->sendersigningkey->has_private_) { + result = curve_decode_private_point(&signature_private_key, + state_structure->sendersigningkey->private_.data, + state_structure->sendersigningkey->private_.len, + global_context); + if(result < 0) { + goto complete; + } + } + } + + if(state_structure->has_senderkeyid && chain_key && signature_public_key) { + unsigned int i; + result = sender_key_state_create(&result_state, + state_structure->senderkeyid, chain_key, + signature_public_key, signature_private_key, + global_context); + if(result < 0) { + goto complete; + } + + if(state_structure->n_sendermessagekeys > 0) { + for(i = 0; i < state_structure->n_sendermessagekeys; i++) { + signal_buffer *seed_buffer; + sender_message_key *message_key; + Textsecure__SenderKeyStateStructure__SenderMessageKey *message_key_structure = + state_structure->sendermessagekeys[i]; + + if(!message_key_structure->has_iteration || !message_key_structure->has_seed) { + continue; + } + + seed_buffer = signal_buffer_create( + message_key_structure->seed.data, + message_key_structure->seed.len); + if(!seed_buffer) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = sender_message_key_create(&message_key, + message_key_structure->iteration, seed_buffer, + global_context); + signal_buffer_free(seed_buffer); + if(result < 0) { + goto complete; + } + + result = sender_key_state_add_sender_message_key(result_state, message_key); + if(result < 0) { + goto complete; + } + SIGNAL_UNREF(message_key); + } + } + } + else { + result = SG_ERR_INVALID_PROTO_BUF; + } + +complete: + if(chain_key) { + SIGNAL_UNREF(chain_key); + } + if(signature_public_key) { + SIGNAL_UNREF(signature_public_key); + } + if(signature_private_key) { + SIGNAL_UNREF(signature_private_key); + } + if(result >= 0) { + *state = result_state; + } + else { + if(result_state) { + SIGNAL_UNREF(result_state); + } + } + return result; +} + +int sender_key_state_copy(sender_key_state **state, sender_key_state *other_state, signal_context *global_context) +{ + int result = 0; + signal_buffer *buffer = 0; + uint8_t *data; + size_t len; + + assert(other_state); + assert(global_context); + + result = sender_key_state_serialize(&buffer, other_state); + if(result < 0) { + goto complete; + } + + data = signal_buffer_data(buffer); + len = signal_buffer_len(buffer); + + result = sender_key_state_deserialize(state, data, len, global_context); + if(result < 0) { + goto complete; + } + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + return result; +} + +uint32_t sender_key_state_get_key_id(sender_key_state *state) +{ + assert(state); + return state->key_id; +} + +sender_chain_key *sender_key_state_get_chain_key(sender_key_state *state) +{ + assert(state); + return state->chain_key; +} + +void sender_key_state_set_chain_key(sender_key_state *state, sender_chain_key *chain_key) +{ + assert(state); + assert(chain_key); + + if(state->chain_key) { + SIGNAL_UNREF(state->chain_key); + } + SIGNAL_REF(chain_key); + state->chain_key = chain_key; +} + +ec_public_key *sender_key_state_get_signing_key_public(sender_key_state *state) +{ + assert(state); + return state->signature_public_key; +} + +ec_private_key *sender_key_state_get_signing_key_private(sender_key_state *state) +{ + assert(state); + return state->signature_private_key; +} + +int sender_key_state_has_sender_message_key(sender_key_state *state, uint32_t iteration) +{ + sender_message_key_node *cur_node = 0; + assert(state); + + DL_FOREACH(state->message_keys_head, cur_node) { + if(sender_message_key_get_iteration(cur_node->key) == iteration) { + return 1; + } + } + + return 0; +} + +int sender_key_state_add_sender_message_key(sender_key_state *state, sender_message_key *message_key) +{ + int result = 0; + sender_message_key_node *node = 0; + int count; + assert(state); + assert(message_key); + + node = malloc(sizeof(sender_message_key_node)); + if(!node) { + result = SG_ERR_NOMEM; + goto complete; + } + + SIGNAL_REF(message_key); + node->key = message_key; + DL_APPEND(state->message_keys_head, node); + + DL_COUNT(state->message_keys_head, node, count); + while(count > MAX_MESSAGE_KEYS) { + node = state->message_keys_head; + DL_DELETE(state->message_keys_head, node); + if(node->key) { + SIGNAL_UNREF(node->key); + } + free(node); + --count; + } + +complete: + return result; +} + +sender_message_key *sender_key_state_remove_sender_message_key(sender_key_state *state, uint32_t iteration) +{ + sender_message_key *result = 0; + sender_message_key_node *cur_node = 0; + sender_message_key_node *tmp_node = 0; + assert(state); + + DL_FOREACH_SAFE(state->message_keys_head, cur_node, tmp_node) { + if(sender_message_key_get_iteration(cur_node->key) == iteration) { + DL_DELETE(state->message_keys_head, cur_node); + result = cur_node->key; + free(cur_node); + break; + } + } + + return result; +} + +void sender_key_state_destroy(signal_type_base *type) +{ + sender_key_state *state = (sender_key_state *)type; + sender_message_key_node *cur_node; + sender_message_key_node *tmp_node; + + SIGNAL_UNREF(state->chain_key); + SIGNAL_UNREF(state->signature_public_key); + SIGNAL_UNREF(state->signature_private_key); + + DL_FOREACH_SAFE(state->message_keys_head, cur_node, tmp_node) { + DL_DELETE(state->message_keys_head, cur_node); + if(cur_node->key) { + SIGNAL_UNREF(cur_node->key); + } + free(cur_node); + } + state->message_keys_head = 0; + + free(state); +} diff --git a/Sources/libsignal/session_builder.c b/Sources/libsignal/session_builder.c new file mode 100755 index 0000000..2bfd620 --- /dev/null +++ b/Sources/libsignal/session_builder.c @@ -0,0 +1,352 @@ +#include "session_builder.h" +#include "session_builder_internal.h" + +#include +#include +#include "session_pre_key.h" +#include "session_record.h" +#include "session_state.h" +#include "ratchet.h" +#include "protocol.h" +#include "key_helper.h" +#include "signal_protocol_internal.h" + +struct session_builder +{ + signal_protocol_store_context *store; + const signal_protocol_address *remote_address; + signal_context *global_context; +}; + +static int session_builder_process_pre_key_signal_message_v3(session_builder *builder, + session_record *record, pre_key_signal_message *message, uint32_t *unsigned_pre_key_id); + +int session_builder_create(session_builder **builder, + signal_protocol_store_context *store, const signal_protocol_address *remote_address, + signal_context *global_context) +{ + session_builder *result = 0; + + assert(store); + assert(global_context); + + result = malloc(sizeof(session_builder)); + if(!result) { + return SG_ERR_NOMEM; + } + memset(result, 0, sizeof(session_builder)); + + result->store = store; + result->remote_address = remote_address; + result->global_context = global_context; + + *builder = result; + return 0; +} + +int session_builder_process_pre_key_signal_message(session_builder *builder, + session_record *record, pre_key_signal_message *message, uint32_t *unsigned_pre_key_id) +{ + int result = 0; + int has_unsigned_pre_key_id_result = 0; + uint32_t unsigned_pre_key_id_result = 0; + ec_public_key *their_identity_key = pre_key_signal_message_get_identity_key(message); + + result = signal_protocol_identity_is_trusted_identity(builder->store, + builder->remote_address, + their_identity_key); + if(result < 0) { + goto complete; + } + if(result == 0) { + result = SG_ERR_UNTRUSTED_IDENTITY; + goto complete; + } + + result = session_builder_process_pre_key_signal_message_v3(builder, record, message, &unsigned_pre_key_id_result); + if(result < 0) { + goto complete; + } + has_unsigned_pre_key_id_result = result; + + result = signal_protocol_identity_save_identity(builder->store, + builder->remote_address, + their_identity_key); + if(result < 0) { + goto complete; + } + + result = has_unsigned_pre_key_id_result; + +complete: + if(result >= 0) { + *unsigned_pre_key_id = unsigned_pre_key_id_result; + } + return result; +} + +static int session_builder_process_pre_key_signal_message_v3(session_builder *builder, + session_record *record, pre_key_signal_message *message, uint32_t *unsigned_pre_key_id) +{ + int result = 0; + uint32_t unsigned_pre_key_id_result = 0; + session_signed_pre_key *our_signed_pre_key = 0; + ratchet_identity_key_pair *our_identity_key = 0; + bob_signal_protocol_parameters *parameters = 0; + session_pre_key *session_our_one_time_pre_key = 0; + ec_key_pair *our_one_time_pre_key = 0; + session_state *state = 0; + uint32_t local_registration_id = 0; + + int has_session_state = session_record_has_session_state(record, + pre_key_signal_message_get_message_version(message), + pre_key_signal_message_get_base_key(message)); + if(has_session_state) { + signal_log(builder->global_context, SG_LOG_INFO, "We've already setup a session for this V3 message, letting bundled message fall through..."); + result = 0; + goto complete; + } + + result = signal_protocol_signed_pre_key_load_key(builder->store, + &our_signed_pre_key, + pre_key_signal_message_get_signed_pre_key_id(message)); + if(result < 0) { + goto complete; + } + + result = signal_protocol_identity_get_key_pair(builder->store, &our_identity_key); + if(result < 0) { + goto complete; + } + + if(pre_key_signal_message_has_pre_key_id(message)) { + result = signal_protocol_pre_key_load_key(builder->store, + &session_our_one_time_pre_key, + pre_key_signal_message_get_pre_key_id(message)); + if(result < 0) { + goto complete; + } + our_one_time_pre_key = session_pre_key_get_key_pair(session_our_one_time_pre_key); + } + + result = bob_signal_protocol_parameters_create( + ¶meters, + our_identity_key, + session_signed_pre_key_get_key_pair(our_signed_pre_key), + our_one_time_pre_key, + session_signed_pre_key_get_key_pair(our_signed_pre_key), + pre_key_signal_message_get_identity_key(message), + pre_key_signal_message_get_base_key(message)); + if(result < 0) { + goto complete; + } + + if(!session_record_is_fresh(record)) { + result = session_record_archive_current_state(record); + if(result < 0) { + goto complete; + } + } + + state = session_record_get_state(record); + + result = ratcheting_session_bob_initialize( + state, parameters, + builder->global_context); + if(result < 0) { + goto complete; + } + + result = signal_protocol_identity_get_local_registration_id(builder->store, &local_registration_id); + if(result < 0) { + goto complete; + } + + session_state_set_local_registration_id(state, local_registration_id); + session_state_set_remote_registration_id(state, + pre_key_signal_message_get_registration_id(message)); + session_state_set_alice_base_key(state, + pre_key_signal_message_get_base_key(message));; + + if(pre_key_signal_message_has_pre_key_id(message) && + pre_key_signal_message_get_pre_key_id(message) != PRE_KEY_MEDIUM_MAX_VALUE) { + unsigned_pre_key_id_result = pre_key_signal_message_get_pre_key_id(message); + result = 1; + } + else { + result = 0; + } + +complete: + SIGNAL_UNREF(parameters); + SIGNAL_UNREF(our_identity_key); + SIGNAL_UNREF(our_signed_pre_key); + SIGNAL_UNREF(session_our_one_time_pre_key); + if(result >= 0) { + *unsigned_pre_key_id = unsigned_pre_key_id_result; + } + return result; +} + +int session_builder_process_pre_key_bundle(session_builder *builder, session_pre_key_bundle *bundle) +{ + int result = 0; + session_record *record = 0; + ec_key_pair *our_base_key = 0; + ratchet_identity_key_pair *our_identity_key = 0; + alice_signal_protocol_parameters *parameters = 0; + ec_public_key *signed_pre_key = 0; + ec_public_key *pre_key = 0; + ec_public_key *their_identity_key = 0; + ec_public_key *their_signed_pre_key = 0; + ec_public_key *their_one_time_pre_key = 0; + int has_their_one_time_pre_key_id = 0; + uint32_t their_one_time_pre_key_id = 0; + session_state *state = 0; + uint32_t local_registration_id = 0; + + assert(builder); + assert(builder->store); + assert(bundle); + signal_lock(builder->global_context); + + result = signal_protocol_identity_is_trusted_identity(builder->store, + builder->remote_address, + session_pre_key_bundle_get_identity_key(bundle)); + if(result < 0) { + goto complete; + } + if(result == 0) { + result = SG_ERR_UNTRUSTED_IDENTITY; + goto complete; + } + + signed_pre_key = session_pre_key_bundle_get_signed_pre_key(bundle); + pre_key = session_pre_key_bundle_get_pre_key(bundle); + + if(signed_pre_key) { + ec_public_key *identity_key = session_pre_key_bundle_get_identity_key(bundle); + signal_buffer *signature = session_pre_key_bundle_get_signed_pre_key_signature(bundle); + + signal_buffer *serialized_signed_pre_key = 0; + result = ec_public_key_serialize(&serialized_signed_pre_key, signed_pre_key); + if(result < 0) { + goto complete; + } + + result = curve_verify_signature(identity_key, + signal_buffer_data(serialized_signed_pre_key), + signal_buffer_len(serialized_signed_pre_key), + signal_buffer_data(signature), + signal_buffer_len(signature)); + + signal_buffer_free(serialized_signed_pre_key); + + if(result == 0) { + signal_log(builder->global_context, SG_LOG_WARNING, "invalid signature on device key!"); + result = SG_ERR_INVALID_KEY; + } + if(result < 0) { + goto complete; + } + } + + if(!signed_pre_key) { + result = SG_ERR_INVALID_KEY; + signal_log(builder->global_context, SG_LOG_WARNING, "no signed pre key!"); + goto complete; + } + + result = signal_protocol_session_load_session(builder->store, &record, builder->remote_address); + if(result < 0) { + goto complete; + } + + result = curve_generate_key_pair(builder->global_context, &our_base_key); + if(result < 0) { + goto complete; + } + + their_identity_key = session_pre_key_bundle_get_identity_key(bundle); + their_signed_pre_key = signed_pre_key; + their_one_time_pre_key = pre_key; + + if(their_one_time_pre_key) { + has_their_one_time_pre_key_id = 1; + their_one_time_pre_key_id = session_pre_key_bundle_get_pre_key_id(bundle); + } + + result = signal_protocol_identity_get_key_pair(builder->store, &our_identity_key); + if(result < 0) { + goto complete; + } + + result = alice_signal_protocol_parameters_create(¶meters, + our_identity_key, + our_base_key, + their_identity_key, + their_signed_pre_key, + their_one_time_pre_key, + their_signed_pre_key); + if(result < 0) { + goto complete; + } + + if(!session_record_is_fresh(record)) { + result = session_record_archive_current_state(record); + if(result < 0) { + goto complete; + } + } + + state = session_record_get_state(record); + + result = ratcheting_session_alice_initialize( + state, parameters, + builder->global_context); + if(result < 0) { + goto complete; + } + + session_state_set_unacknowledged_pre_key_message(state, + has_their_one_time_pre_key_id ? &their_one_time_pre_key_id : 0, + session_pre_key_bundle_get_signed_pre_key_id(bundle), + ec_key_pair_get_public(our_base_key)); + + result = signal_protocol_identity_get_local_registration_id(builder->store, &local_registration_id); + if(result < 0) { + goto complete; + } + + session_state_set_local_registration_id(state, local_registration_id); + session_state_set_remote_registration_id(state, + session_pre_key_bundle_get_registration_id(bundle)); + session_state_set_alice_base_key(state, ec_key_pair_get_public(our_base_key)); + + result = signal_protocol_session_store_session(builder->store, builder->remote_address, record); + if(result < 0) { + goto complete; + } + + result = signal_protocol_identity_save_identity(builder->store, + builder->remote_address, + their_identity_key); + if(result < 0) { + goto complete; + } + +complete: + SIGNAL_UNREF(record); + SIGNAL_UNREF(our_base_key); + SIGNAL_UNREF(our_identity_key); + SIGNAL_UNREF(parameters); + signal_unlock(builder->global_context); + return result; +} + +void session_builder_free(session_builder *builder) +{ + if(builder) { + free(builder); + } +} diff --git a/Sources/libsignal/session_builder_internal.h b/Sources/libsignal/session_builder_internal.h new file mode 100755 index 0000000..2bf8dba --- /dev/null +++ b/Sources/libsignal/session_builder_internal.h @@ -0,0 +1,26 @@ +#ifndef SESSION_BUILDER_INTERNAL_H +#define SESSION_BUILDER_INTERNAL_H + +#include +#include "signal_protocol_types.h" + +/** + * Build a new session from a received pre_key_signal_message. + * + * After a session is constructed in this way, the embedded signal_message + * can be decrypted. + * + * @param message The received pre_key_signal_message. + * @param unsigned_pre_key_id set to the unsigned pre key ID, if available. + * Return value indicates whether or not this value is available. + * @retval 0 Success, no unsigned pre key value available + * @retval 1 Success, an unsigned pre key is available + * @retval SG_ERR_INVALID_KEY_ID when there is no local pre_key_record that + * corresponds to the PreKey ID in the message. + * @retval SG_ERR_INVALID_KEY when the message is formatted incorrectly. + * @retval SG_ERR_UNTRUSTED_IDENTITY when the identity key of the sender is untrusted. + */ +int session_builder_process_pre_key_signal_message(session_builder *builder, + session_record *record, pre_key_signal_message *message, uint32_t *unsigned_pre_key_id); + +#endif /* SESSION_BUILDER_INTERNAL_H */ diff --git a/Sources/libsignal/session_cipher.c b/Sources/libsignal/session_cipher.c new file mode 100755 index 0000000..3f5dcab --- /dev/null +++ b/Sources/libsignal/session_cipher.c @@ -0,0 +1,885 @@ +#include "session_cipher.h" + +#include +#include +#include "session_builder.h" +#include "session_builder_internal.h" +#include "session_record.h" +#include "session_state.h" +#include "ratchet.h" +#include "protocol.h" +#include "signal_protocol_internal.h" + +struct session_cipher +{ + signal_protocol_store_context *store; + const signal_protocol_address *remote_address; + session_builder *builder; + signal_context *global_context; + int (*decrypt_callback)(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context); + int inside_callback; + void *user_data; +}; + +static int session_cipher_decrypt_from_record_and_signal_message(session_cipher *cipher, + session_record *record, signal_message *ciphertext, signal_buffer **plaintext); +static int session_cipher_decrypt_from_state_and_signal_message(session_cipher *cipher, + session_state *state, signal_message *ciphertext, signal_buffer **plaintext); + +static int session_cipher_get_or_create_chain_key(session_cipher *cipher, + ratchet_chain_key **chain_key, + session_state *state, ec_public_key *their_ephemeral); +static int session_cipher_get_or_create_message_keys(ratchet_message_keys *message_keys, + session_state *state, ec_public_key *their_ephemeral, + ratchet_chain_key *chain_key, uint32_t counter, + signal_context *global_context); + +static int session_cipher_get_ciphertext(session_cipher *cipher, + signal_buffer **ciphertext, + uint32_t version, ratchet_message_keys *message_keys, + const uint8_t *plaintext, size_t plaintext_len); +static int session_cipher_get_plaintext(session_cipher *cipher, + signal_buffer **plaintext, + uint32_t version, ratchet_message_keys *message_keys, + const uint8_t *ciphertext, size_t ciphertext_len); + +static int session_cipher_decrypt_callback(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context); + +int session_cipher_create(session_cipher **cipher, + signal_protocol_store_context *store, const signal_protocol_address *remote_address, + signal_context *global_context) +{ + int result = 0; + session_builder *builder = 0; + session_cipher *result_cipher; + + assert(store); + assert(global_context); + + result = session_builder_create(&builder, store, remote_address, global_context); + if(result < 0) { + return result; + } + + result_cipher = malloc(sizeof(session_cipher)); + if(!result_cipher) { + return SG_ERR_NOMEM; + } + memset(result_cipher, 0, sizeof(session_cipher)); + + result_cipher->store = store; + result_cipher->remote_address = remote_address; + result_cipher->builder = builder; + result_cipher->global_context = global_context; + + *cipher = result_cipher; + return 0; +} + +void session_cipher_set_user_data(session_cipher *cipher, void *user_data) +{ + assert(cipher); + cipher->user_data = user_data; +} + +void *session_cipher_get_user_data(session_cipher *cipher) +{ + assert(cipher); + return cipher->user_data; +} + +void session_cipher_set_decryption_callback(session_cipher *cipher, + int (*callback)(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context)) +{ + assert(cipher); + cipher->decrypt_callback = callback; +} + +int session_cipher_encrypt(session_cipher *cipher, + const uint8_t *padded_message, size_t padded_message_len, + ciphertext_message **encrypted_message) +{ + int result = 0; + session_record *record = 0; + session_state *state = 0; + ratchet_chain_key *chain_key = 0; + ratchet_chain_key *next_chain_key = 0; + ratchet_message_keys message_keys; + ec_public_key *sender_ephemeral = 0; + uint32_t previous_counter = 0; + uint32_t session_version = 0; + signal_buffer *ciphertext = 0; + uint32_t chain_key_index = 0; + ec_public_key *local_identity_key = 0; + ec_public_key *remote_identity_key = 0; + signal_message *message = 0; + pre_key_signal_message *pre_key_message = 0; + uint8_t *ciphertext_data = 0; + size_t ciphertext_len = 0; + + assert(cipher); + signal_lock(cipher->global_context); + + if(cipher->inside_callback == 1) { + result = SG_ERR_INVAL; + goto complete; + } + + result = signal_protocol_session_load_session(cipher->store, &record, cipher->remote_address); + if(result < 0) { + goto complete; + } + + state = session_record_get_state(record); + if(!state) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + chain_key = session_state_get_sender_chain_key(state); + if(!chain_key) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = ratchet_chain_key_get_message_keys(chain_key, &message_keys); + if(result < 0) { + goto complete; + } + + sender_ephemeral = session_state_get_sender_ratchet_key(state); + if(!sender_ephemeral) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + previous_counter = session_state_get_previous_counter(state); + session_version = session_state_get_session_version(state); + + result = session_cipher_get_ciphertext(cipher, + &ciphertext, + session_version, &message_keys, + padded_message, padded_message_len); + if(result < 0) { + goto complete; + } + ciphertext_data = signal_buffer_data(ciphertext); + ciphertext_len = signal_buffer_len(ciphertext); + + chain_key_index = ratchet_chain_key_get_index(chain_key); + + local_identity_key = session_state_get_local_identity_key(state); + if(!local_identity_key) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + remote_identity_key = session_state_get_remote_identity_key(state); + if(!remote_identity_key) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = signal_message_create(&message, + session_version, + message_keys.mac_key, sizeof(message_keys.mac_key), + sender_ephemeral, + chain_key_index, previous_counter, + ciphertext_data, ciphertext_len, + local_identity_key, remote_identity_key, + cipher->global_context); + if(result < 0) { + goto complete; + } + + if(session_state_has_unacknowledged_pre_key_message(state) == 1) { + uint32_t local_registration_id = session_state_get_local_registration_id(state); + int has_pre_key_id = 0; + uint32_t pre_key_id = 0; + uint32_t signed_pre_key_id; + ec_public_key *base_key; + + if(session_state_unacknowledged_pre_key_message_has_pre_key_id(state)) { + has_pre_key_id = 1; + pre_key_id = session_state_unacknowledged_pre_key_message_get_pre_key_id(state); + } + signed_pre_key_id = session_state_unacknowledged_pre_key_message_get_signed_pre_key_id(state); + base_key = session_state_unacknowledged_pre_key_message_get_base_key(state); + + if(!base_key) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = pre_key_signal_message_create(&pre_key_message, + session_version, local_registration_id, (has_pre_key_id ? &pre_key_id : 0), + signed_pre_key_id, base_key, local_identity_key, + message, + cipher->global_context); + if(result < 0) { + goto complete; + } + SIGNAL_UNREF(message); + message = 0; + } + + result = ratchet_chain_key_create_next(chain_key, &next_chain_key); + if(result < 0) { + goto complete; + } + + result = session_state_set_sender_chain_key(state, next_chain_key); + if(result < 0) { + goto complete; + } + + result = signal_protocol_session_store_session(cipher->store, cipher->remote_address, record); + +complete: + if(result >= 0) { + if(pre_key_message) { + *encrypted_message = (ciphertext_message *)pre_key_message; + } + else { + *encrypted_message = (ciphertext_message *)message; + } + } + else { + SIGNAL_UNREF(pre_key_message); + SIGNAL_UNREF(message); + } + signal_buffer_free(ciphertext); + SIGNAL_UNREF(next_chain_key); + SIGNAL_UNREF(record); + signal_explicit_bzero(&message_keys, sizeof(ratchet_message_keys)); + signal_unlock(cipher->global_context); + return result; +} + +int session_cipher_decrypt_pre_key_signal_message(session_cipher *cipher, + pre_key_signal_message *ciphertext, void *decrypt_context, + signal_buffer **plaintext) +{ + int result = 0; + signal_buffer *result_buf = 0; + session_record *record = 0; + int has_unsigned_pre_key_id = 0; + uint32_t unsigned_pre_key_id = 0; + + assert(cipher); + signal_lock(cipher->global_context); + + if(cipher->inside_callback == 1) { + result = SG_ERR_INVAL; + goto complete; + } + + result = signal_protocol_session_load_session(cipher->store, &record, cipher->remote_address); + if(result < 0) { + goto complete; + } + + result = session_builder_process_pre_key_signal_message(cipher->builder, record, ciphertext, &unsigned_pre_key_id); + if(result < 0) { + goto complete; + } + has_unsigned_pre_key_id = result; + + result = session_cipher_decrypt_from_record_and_signal_message(cipher, record, + pre_key_signal_message_get_signal_message(ciphertext), + &result_buf); + if(result < 0) { + goto complete; + } + + result = session_cipher_decrypt_callback(cipher, result_buf, decrypt_context); + if(result < 0) { + goto complete; + } + + result = signal_protocol_session_store_session(cipher->store, cipher->remote_address, record); + if(result < 0) { + goto complete; + } + + if(has_unsigned_pre_key_id) { + result = signal_protocol_pre_key_remove_key(cipher->store, unsigned_pre_key_id); + if(result < 0) { + goto complete; + } + } + +complete: + SIGNAL_UNREF(record); + if(result >= 0) { + *plaintext = result_buf; + } + else { + signal_buffer_free(result_buf); + } + signal_unlock(cipher->global_context); + return result; +} + +int session_cipher_decrypt_signal_message(session_cipher *cipher, + signal_message *ciphertext, void *decrypt_context, + signal_buffer **plaintext) +{ + int result = 0; + signal_buffer *result_buf = 0; + session_record *record = 0; + + assert(cipher); + signal_lock(cipher->global_context); + + if(cipher->inside_callback == 1) { + result = SG_ERR_INVAL; + goto complete; + } + + result = signal_protocol_session_contains_session(cipher->store, cipher->remote_address); + if(result == 0) { + signal_log(cipher->global_context, SG_LOG_WARNING, "No session for: %s:%d", cipher->remote_address->name, cipher->remote_address->device_id); + result = SG_ERR_NO_SESSION; + goto complete; + } + else if(result < 0) { + goto complete; + } + + result = signal_protocol_session_load_session(cipher->store, &record, + cipher->remote_address); + if(result < 0) { + goto complete; + } + + result = session_cipher_decrypt_from_record_and_signal_message( + cipher, record, ciphertext, &result_buf); + if(result < 0) { + goto complete; + } + + result = session_cipher_decrypt_callback(cipher, result_buf, decrypt_context); + if(result < 0) { + goto complete; + } + + result = signal_protocol_session_store_session(cipher->store, + cipher->remote_address, record); + +complete: + SIGNAL_UNREF(record); + if(result >= 0) { + *plaintext = result_buf; + } + else { + signal_buffer_free(result_buf); + } + signal_unlock(cipher->global_context); + return result; +} + +static int session_cipher_decrypt_from_record_and_signal_message(session_cipher *cipher, + session_record *record, signal_message *ciphertext, signal_buffer **plaintext) +{ + int result = 0; + signal_buffer *result_buf = 0; + session_state *state = 0; + session_state *state_copy = 0; + session_record_state_node *previous_states_node = 0; + + assert(cipher); + signal_lock(cipher->global_context); + + state = session_record_get_state(record); + if(state) { + result = session_state_copy(&state_copy, state, cipher->global_context); + if(result < 0) { + goto complete; + } + + //TODO Collect and log invalid message errors if totally unsuccessful + + result = session_cipher_decrypt_from_state_and_signal_message(cipher, state_copy, ciphertext, &result_buf); + if(result < 0 && result != SG_ERR_INVALID_MESSAGE) { + goto complete; + } + + if(result >= SG_SUCCESS) { + session_record_set_state(record, state_copy); + goto complete; + } + SIGNAL_UNREF(state_copy); + } + + previous_states_node = session_record_get_previous_states_head(record); + while(previous_states_node) { + state = session_record_get_previous_states_element(previous_states_node); + + result = session_state_copy(&state_copy, state, cipher->global_context); + if(result < 0) { + goto complete; + } + + result = session_cipher_decrypt_from_state_and_signal_message(cipher, state_copy, ciphertext, &result_buf); + if(result < 0 && result != SG_ERR_INVALID_MESSAGE) { + goto complete; + } + + if(result >= SG_SUCCESS) { + session_record_get_previous_states_remove(record, previous_states_node); + result = session_record_promote_state(record, state_copy); + goto complete; + } + + SIGNAL_UNREF(state_copy); + previous_states_node = session_record_get_previous_states_next(previous_states_node); + } + + signal_log(cipher->global_context, SG_LOG_WARNING, "No valid sessions"); + result = SG_ERR_INVALID_MESSAGE; + +complete: + SIGNAL_UNREF(state_copy); + if(result >= 0) { + *plaintext = result_buf; + } + else { + signal_buffer_free(result_buf); + } + signal_unlock(cipher->global_context); + return result; +} + +static int session_cipher_decrypt_from_state_and_signal_message(session_cipher *cipher, + session_state *state, signal_message *ciphertext, signal_buffer **plaintext) +{ + int result = 0; + signal_buffer *result_buf = 0; + ec_public_key *their_ephemeral = 0; + uint32_t counter = 0; + ratchet_chain_key *chain_key = 0; + ratchet_message_keys message_keys; + uint8_t message_version = 0; + uint32_t session_version = 0; + ec_public_key *remote_identity_key = 0; + ec_public_key *local_identity_key = 0; + signal_buffer *ciphertext_body = 0; + + if(!session_state_has_sender_chain(state)) { + signal_log(cipher->global_context, SG_LOG_WARNING, "Uninitialized session!"); + result = SG_ERR_INVALID_MESSAGE; + goto complete; + } + + message_version = signal_message_get_message_version(ciphertext); + session_version = session_state_get_session_version(state); + + if(message_version != session_version) { + signal_log(cipher->global_context, SG_LOG_WARNING, "Message version %d, but session version %d", message_version, session_version); + result = SG_ERR_INVALID_MESSAGE; + goto complete; + } + + their_ephemeral = signal_message_get_sender_ratchet_key(ciphertext); + if(!their_ephemeral) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + counter = signal_message_get_counter(ciphertext); + + result = session_cipher_get_or_create_chain_key(cipher, &chain_key, state, their_ephemeral); + if(result < 0) { + goto complete; + } + + result = session_cipher_get_or_create_message_keys(&message_keys, state, + their_ephemeral, chain_key, counter, cipher->global_context); + if(result < 0) { + goto complete; + } + + remote_identity_key = session_state_get_remote_identity_key(state); + if(!remote_identity_key) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + local_identity_key = session_state_get_local_identity_key(state); + if(!local_identity_key) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = signal_message_verify_mac(ciphertext, + remote_identity_key, local_identity_key, + message_keys.mac_key, sizeof(message_keys.mac_key), + cipher->global_context); + if(result != 1) { + if(result == 0) { + signal_log(cipher->global_context, SG_LOG_WARNING, "Message mac not verified"); + result = SG_ERR_INVALID_MESSAGE; + } + else if(result < 0) { + signal_log(cipher->global_context, SG_LOG_WARNING, "Error attempting to verify message mac"); + } + goto complete; + } + + ciphertext_body = signal_message_get_body(ciphertext); + if(!ciphertext_body) { + signal_log(cipher->global_context, SG_LOG_WARNING, "Message body does not exist"); + result = SG_ERR_INVALID_MESSAGE; + goto complete; + } + + result = session_cipher_get_plaintext(cipher, &result_buf, message_version, &message_keys, + signal_buffer_data(ciphertext_body), signal_buffer_len(ciphertext_body)); + if(result < 0) { + goto complete; + } + + session_state_clear_unacknowledged_pre_key_message(state); + +complete: + SIGNAL_UNREF(chain_key); + if(result >= 0) { + *plaintext = result_buf; + } + else { + signal_buffer_free(result_buf); + } + signal_explicit_bzero(&message_keys, sizeof(ratchet_message_keys)); + return result; +} + +static int session_cipher_get_or_create_chain_key(session_cipher *cipher, + ratchet_chain_key **chain_key, + session_state *state, ec_public_key *their_ephemeral) +{ + int result = 0; + ratchet_chain_key *result_key = 0; + ratchet_root_key *receiver_root_key = 0; + ratchet_chain_key *receiver_chain_key = 0; + ratchet_root_key *sender_root_key = 0; + ratchet_chain_key *sender_chain_key = 0; + ec_key_pair *our_new_ephemeral = 0; + ratchet_root_key *root_key = 0; + ec_key_pair *our_ephemeral = 0; + ratchet_chain_key *previous_sender_chain_key = 0; + uint32_t index = 0; + + result_key = session_state_get_receiver_chain_key(state, their_ephemeral); + if(result_key) { + SIGNAL_REF(result_key); + goto complete; + } + + root_key = session_state_get_root_key(state); + if(!root_key) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + our_ephemeral = session_state_get_sender_ratchet_key_pair(state); + if(!our_ephemeral) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + result = ratchet_root_key_create_chain(root_key, + &receiver_root_key, &receiver_chain_key, + their_ephemeral, ec_key_pair_get_private(our_ephemeral)); + if(result < 0) { + goto complete; + } + + result = curve_generate_key_pair(cipher->global_context, &our_new_ephemeral); + if(result < 0) { + goto complete; + } + + result = ratchet_root_key_create_chain(receiver_root_key, + &sender_root_key, &sender_chain_key, + their_ephemeral, ec_key_pair_get_private(our_new_ephemeral)); + if(result < 0) { + goto complete; + } + + session_state_set_root_key(state, sender_root_key); + + result = session_state_add_receiver_chain(state, their_ephemeral, receiver_chain_key); + if(result < 0) { + goto complete; + } + + previous_sender_chain_key = session_state_get_sender_chain_key(state); + if(!previous_sender_chain_key) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + index = ratchet_chain_key_get_index(previous_sender_chain_key); + if(index > 0) { --index; } + + session_state_set_previous_counter(state, index); + session_state_set_sender_chain(state, our_new_ephemeral, sender_chain_key); + + result_key = receiver_chain_key; + SIGNAL_REF(result_key); + +complete: + SIGNAL_UNREF(receiver_root_key); + SIGNAL_UNREF(receiver_chain_key); + SIGNAL_UNREF(sender_root_key); + SIGNAL_UNREF(sender_chain_key); + SIGNAL_UNREF(our_new_ephemeral); + if(result >= 0) { + *chain_key = result_key; + } + else { + SIGNAL_UNREF(result_key); + } + return result; +} + +static int session_cipher_get_or_create_message_keys(ratchet_message_keys *message_keys, + session_state *state, ec_public_key *their_ephemeral, + ratchet_chain_key *chain_key, uint32_t counter, signal_context *global_context) +{ + int result = 0; + ratchet_chain_key *cur_chain_key = 0; + ratchet_chain_key *next_chain_key = 0; + ratchet_message_keys message_keys_result; + + if(ratchet_chain_key_get_index(chain_key) > counter) { + result = session_state_remove_message_keys(state, &message_keys_result, their_ephemeral, counter); + if(result == 1) { + result = 0; + goto complete; + } + + signal_log(global_context, SG_LOG_WARNING, "Received message with old counter: %d, %d", + ratchet_chain_key_get_index(chain_key), counter); + result = SG_ERR_DUPLICATE_MESSAGE; + goto complete; + } + + if(counter - ratchet_chain_key_get_index(chain_key) > 2000) { + signal_log(global_context, SG_LOG_WARNING, "Over 2000 messages into the future!"); + result = SG_ERR_INVALID_MESSAGE; + goto complete; + } + + cur_chain_key = chain_key; + SIGNAL_REF(cur_chain_key); + + while(ratchet_chain_key_get_index(cur_chain_key) < counter) { + result = ratchet_chain_key_get_message_keys(cur_chain_key, &message_keys_result); + if(result < 0) { + goto complete; + } + + result = session_state_set_message_keys(state, their_ephemeral, &message_keys_result); + if(result < 0) { + goto complete; + } + + result = ratchet_chain_key_create_next(cur_chain_key, &next_chain_key); + if(result < 0) { + goto complete; + } + SIGNAL_UNREF(cur_chain_key); + cur_chain_key = next_chain_key; + next_chain_key = 0; + } + + result = ratchet_chain_key_create_next(cur_chain_key, &next_chain_key); + if(result < 0) { + goto complete; + } + + result = session_state_set_receiver_chain_key(state, their_ephemeral, next_chain_key); + if(result < 0) { + goto complete; + } + + result = ratchet_chain_key_get_message_keys(cur_chain_key, &message_keys_result); + if(result < 0) { + goto complete; + } + +complete: + if(result >= 0) { + memcpy(message_keys, &message_keys_result, sizeof(ratchet_message_keys)); + } + SIGNAL_UNREF(cur_chain_key); + SIGNAL_UNREF(next_chain_key); + signal_explicit_bzero(&message_keys_result, sizeof(ratchet_message_keys)); + return result; +} + +int session_cipher_get_remote_registration_id(session_cipher *cipher, uint32_t *remote_id) +{ + int result = 0; + uint32_t id_result = 0; + session_record *record = 0; + session_state *state = 0; + + assert(cipher); + signal_lock(cipher->global_context); + + result = signal_protocol_session_load_session(cipher->store, &record, cipher->remote_address); + if(result < 0) { + goto complete; + } + + state = session_record_get_state(record); + if(!state) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + id_result = session_state_get_remote_registration_id(state); + +complete: + if(result >= 0) { + *remote_id = id_result; + } + signal_unlock(cipher->global_context); + return result; +} + +int session_cipher_get_session_version(session_cipher *cipher, uint32_t *version) +{ + int result = 0; + uint32_t version_result = 0; + session_record *record = 0; + session_state *state = 0; + + assert(cipher); + signal_lock(cipher->global_context); + + result = signal_protocol_session_contains_session(cipher->store, cipher->remote_address); + if(result != 1) { + if(result == 0) { + signal_log(cipher->global_context, SG_LOG_WARNING, "No session for: %s:%d", cipher->remote_address->name, cipher->remote_address->device_id); + result = SG_ERR_NO_SESSION; + } + goto complete; + } + + result = signal_protocol_session_load_session(cipher->store, &record, cipher->remote_address); + if(result < 0) { + goto complete; + } + + state = session_record_get_state(record); + if(!state) { + result = SG_ERR_UNKNOWN; + goto complete; + } + + version_result = session_state_get_session_version(state); + +complete: + if(result >= 0) { + *version = version_result; + } + signal_unlock(cipher->global_context); + return result; +} + +static int session_cipher_get_ciphertext(session_cipher *cipher, + signal_buffer **ciphertext, + uint32_t version, ratchet_message_keys *message_keys, + const uint8_t *plaintext, size_t plaintext_len) +{ + int result = 0; + signal_buffer *output = 0; + + if(version >= 3) { + result = signal_encrypt(cipher->global_context, + &output, SG_CIPHER_AES_CBC_PKCS5, + message_keys->cipher_key, sizeof(message_keys->cipher_key), + message_keys->iv, sizeof(message_keys->iv), + plaintext, plaintext_len); + } + else { + uint8_t iv[16]; + memset(iv, 0, sizeof(iv)); + iv[3] = (uint8_t)(message_keys->counter); + iv[2] = (uint8_t)(message_keys->counter >> 8); + iv[1] = (uint8_t)(message_keys->counter >> 16); + iv[0] = (uint8_t)(message_keys->counter >> 24); + + result = signal_encrypt(cipher->global_context, + &output, SG_CIPHER_AES_CTR_NOPADDING, + message_keys->cipher_key, sizeof(message_keys->cipher_key), + iv, sizeof(iv), + plaintext, plaintext_len); + } + + if(result >= 0) { + *ciphertext = output; + } + + return result; +} + +static int session_cipher_get_plaintext(session_cipher *cipher, + signal_buffer **plaintext, + uint32_t version, ratchet_message_keys *message_keys, + const uint8_t *ciphertext, size_t ciphertext_len) +{ + int result = 0; + signal_buffer *output = 0; + + if(version >= 3) { + result = signal_decrypt(cipher->global_context, + &output, SG_CIPHER_AES_CBC_PKCS5, + message_keys->cipher_key, sizeof(message_keys->cipher_key), + message_keys->iv, sizeof(message_keys->iv), + ciphertext, ciphertext_len); + } + else { + uint8_t iv[16]; + memset(iv, 0, sizeof(iv)); + iv[3] = (uint8_t)(message_keys->counter); + iv[2] = (uint8_t)(message_keys->counter >> 8); + iv[1] = (uint8_t)(message_keys->counter >> 16); + iv[0] = (uint8_t)(message_keys->counter >> 24); + + result = signal_decrypt(cipher->global_context, + &output, SG_CIPHER_AES_CTR_NOPADDING, + message_keys->cipher_key, sizeof(message_keys->cipher_key), + iv, sizeof(iv), + ciphertext, ciphertext_len); + } + + if(result >= 0) { + *plaintext = output; + } + + return result; +} + +static int session_cipher_decrypt_callback(session_cipher *cipher, signal_buffer *plaintext, void *decrypt_context) +{ + int result = 0; + if(cipher->decrypt_callback) { + cipher->inside_callback = 1; + result = cipher->decrypt_callback(cipher, plaintext, decrypt_context); + cipher->inside_callback = 0; + } + return result; +} + +void session_cipher_free(session_cipher *cipher) +{ + if(cipher) { + session_builder_free(cipher->builder); + free(cipher); + } +} diff --git a/Sources/libsignal/session_pre_key.c b/Sources/libsignal/session_pre_key.c new file mode 100755 index 0000000..416ed6a --- /dev/null +++ b/Sources/libsignal/session_pre_key.c @@ -0,0 +1,557 @@ +#include "session_pre_key.h" + +#include +#include +#include + +#include "curve.h" +#include "LocalStorageProtocol.pb-c.h" +#include "signal_protocol_internal.h" + +struct session_pre_key { + signal_type_base base; + uint32_t id; + ec_key_pair *key_pair; +}; + +struct session_signed_pre_key { + signal_type_base base; + uint32_t id; + ec_key_pair *key_pair; + uint64_t timestamp; + size_t signature_len; + uint8_t signature[]; +}; + +struct session_pre_key_bundle { + signal_type_base base; + uint32_t registration_id; + int device_id; + uint32_t pre_key_id; + ec_public_key *pre_key_public; + uint32_t signed_pre_key_id; + ec_public_key *signed_pre_key_public; + signal_buffer *signed_pre_key_signature; + ec_public_key *identity_key; +}; + +/*------------------------------------------------------------------------*/ + +int session_pre_key_create(session_pre_key **pre_key, uint32_t id, ec_key_pair *key_pair) +{ + session_pre_key *result = 0; + + assert(key_pair); + + result = malloc(sizeof(session_pre_key)); + if(!result) { + return SG_ERR_NOMEM; + } + memset(result, 0, sizeof(session_pre_key)); + SIGNAL_INIT(result, session_pre_key_destroy); + + result->id = id; + + SIGNAL_REF(key_pair); + result->key_pair = key_pair; + + *pre_key = result; + return 0; +} + +int session_pre_key_serialize(signal_buffer **buffer, const session_pre_key *pre_key) +{ + int result = 0; + size_t result_size = 0; + Textsecure__PreKeyRecordStructure record = TEXTSECURE__PRE_KEY_RECORD_STRUCTURE__INIT; + signal_buffer *public_buf = 0; + signal_buffer *private_buf = 0; + signal_buffer *result_buf = 0; + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + size_t len = 0; + uint8_t *data = 0; + + if(!pre_key) { + result = SG_ERR_INVAL; + goto complete; + } + + public_key = ec_key_pair_get_public(pre_key->key_pair); + result = ec_public_key_serialize(&public_buf, public_key); + if(result < 0) { + goto complete; + } + + private_key = ec_key_pair_get_private(pre_key->key_pair); + result = ec_private_key_serialize(&private_buf, private_key); + if(result < 0) { + goto complete; + } + + record.has_id = 1; + record.id = pre_key->id; + + record.has_publickey = 1; + record.publickey.data = signal_buffer_data(public_buf); + record.publickey.len = signal_buffer_len(public_buf); + + record.has_privatekey = 1; + record.privatekey.data = signal_buffer_data(private_buf); + record.privatekey.len = signal_buffer_len(private_buf); + + len = textsecure__pre_key_record_structure__get_packed_size(&record); + + result_buf = signal_buffer_alloc(len); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + result_size = textsecure__pre_key_record_structure__pack(&record, data); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(public_buf) { + signal_buffer_free(public_buf); + } + if(private_buf) { + signal_buffer_free(private_buf); + } + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int session_pre_key_deserialize(session_pre_key **pre_key, const uint8_t *data, size_t len, signal_context *global_context) +{ + int result = 0; + Textsecure__PreKeyRecordStructure *record = 0; + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + ec_key_pair *key_pair = 0; + session_pre_key *result_pre_key = 0; + + record = textsecure__pre_key_record_structure__unpack(0, len, data); + if(!record) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(!record->has_id || !record->has_publickey || !record->has_privatekey) { + result = SG_ERR_INVALID_KEY; + goto complete; + } + + result = curve_decode_point(&public_key, record->publickey.data, record->publickey.len, global_context); + if(result < 0) { + goto complete; + } + + result = curve_decode_private_point(&private_key, record->privatekey.data, record->privatekey.len, global_context); + if(result < 0) { + goto complete; + } + + result = ec_key_pair_create(&key_pair, public_key, private_key); + if(result < 0) { + goto complete; + } + + result = session_pre_key_create(&result_pre_key, record->id, key_pair); + if(result < 0) { + goto complete; + } + +complete: + if(record) { + textsecure__pre_key_record_structure__free_unpacked(record, 0); + } + if(public_key) { + SIGNAL_UNREF(public_key); + } + if(private_key) { + SIGNAL_UNREF(private_key); + } + if(key_pair) { + SIGNAL_UNREF(key_pair); + } + if(result >= 0) { + *pre_key = result_pre_key; + } + return result; +} + +uint32_t session_pre_key_get_id(const session_pre_key *pre_key) +{ + return pre_key->id; +} + +ec_key_pair *session_pre_key_get_key_pair(const session_pre_key *pre_key) +{ + return pre_key->key_pair; +} + +void session_pre_key_destroy(signal_type_base *type) +{ + session_pre_key *pre_key = (session_pre_key *)type; + + if(pre_key->key_pair) { + SIGNAL_UNREF(pre_key->key_pair); + } + + free(pre_key); +} + +/*------------------------------------------------------------------------*/ + +int session_signed_pre_key_create(session_signed_pre_key **pre_key, + uint32_t id, uint64_t timestamp, ec_key_pair *key_pair, + const uint8_t *signature, size_t signature_len) +{ + session_signed_pre_key *result = 0; + + assert(key_pair); + assert(signature); + assert(signature_len > 0); + + if(signature_len > (SIZE_MAX - sizeof(session_signed_pre_key)) / sizeof(uint8_t)) { + return SG_ERR_NOMEM; + } + + result = malloc(sizeof(session_signed_pre_key) + (sizeof(uint8_t) * signature_len)); + if(!result) { + return SG_ERR_NOMEM; + } + memset(result, 0, sizeof(session_signed_pre_key)); + SIGNAL_INIT(result, session_signed_pre_key_destroy); + + result->id = id; + result->timestamp = timestamp; + + SIGNAL_REF(key_pair); + result->key_pair = key_pair; + + result->signature_len = signature_len; + + memcpy(result->signature, signature, signature_len); + + *pre_key = result; + return 0; +} + +int session_signed_pre_key_serialize(signal_buffer **buffer, const session_signed_pre_key *pre_key) +{ + int result = 0; + size_t result_size = 0; + Textsecure__SignedPreKeyRecordStructure record = TEXTSECURE__SIGNED_PRE_KEY_RECORD_STRUCTURE__INIT; + signal_buffer *public_buf = 0; + signal_buffer *private_buf = 0; + signal_buffer *signature_buf = 0; + signal_buffer *result_buf = 0; + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + size_t len = 0; + uint8_t *data = 0; + + public_key = ec_key_pair_get_public(pre_key->key_pair); + result = ec_public_key_serialize(&public_buf, public_key); + if(result < 0) { + goto complete; + } + + private_key = ec_key_pair_get_private(pre_key->key_pair); + result = ec_private_key_serialize(&private_buf, private_key); + if(result < 0) { + goto complete; + } + + signature_buf = signal_buffer_create(pre_key->signature, pre_key->signature_len); + if(!signature_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + record.has_id = 1; + record.id = pre_key->id; + + record.has_timestamp = 1; + record.timestamp = pre_key->timestamp; + + record.has_publickey = 1; + record.publickey.data = signal_buffer_data(public_buf); + record.publickey.len = signal_buffer_len(public_buf); + + record.has_privatekey = 1; + record.privatekey.data = signal_buffer_data(private_buf); + record.privatekey.len = signal_buffer_len(private_buf); + + record.has_signature = 1; + record.signature.data = signal_buffer_data(signature_buf); + record.signature.len = signal_buffer_len(signature_buf); + + len = textsecure__signed_pre_key_record_structure__get_packed_size(&record); + + result_buf = signal_buffer_alloc(len); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + result_size = textsecure__signed_pre_key_record_structure__pack(&record, data); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(public_buf) { + signal_buffer_free(public_buf); + } + if(private_buf) { + signal_buffer_free(private_buf); + } + if(signature_buf) { + signal_buffer_free(signature_buf); + } + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int session_signed_pre_key_deserialize(session_signed_pre_key **pre_key, const uint8_t *data, size_t len, signal_context *global_context) +{ + int result = 0; + Textsecure__SignedPreKeyRecordStructure *record = 0; + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + ec_key_pair *key_pair = 0; + session_signed_pre_key *result_pre_key = 0; + + record = textsecure__signed_pre_key_record_structure__unpack(0, len, data); + if(!record) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(!record->has_id || !record->has_timestamp + || !record->has_publickey || !record->has_privatekey + || !record->has_signature) { + result = SG_ERR_INVALID_KEY; + goto complete; + } + + result = curve_decode_point(&public_key, record->publickey.data, record->publickey.len, global_context); + if(result < 0) { + goto complete; + } + + result = curve_decode_private_point(&private_key, record->privatekey.data, record->privatekey.len, global_context); + if(result < 0) { + goto complete; + } + + result = ec_key_pair_create(&key_pair, public_key, private_key); + if(result < 0) { + goto complete; + } + + result = session_signed_pre_key_create(&result_pre_key, + record->id, record->timestamp, key_pair, + record->signature.data, record->signature.len); + if(result < 0) { + goto complete; + } + +complete: + if(record) { + textsecure__signed_pre_key_record_structure__free_unpacked(record, 0); + } + if(public_key) { + SIGNAL_UNREF(public_key); + } + if(private_key) { + SIGNAL_UNREF(private_key); + } + if(key_pair) { + SIGNAL_UNREF(key_pair); + } + if(result >= 0) { + *pre_key = result_pre_key; + } + return result; +} + +uint32_t session_signed_pre_key_get_id(const session_signed_pre_key *pre_key) +{ + return pre_key->id; +} + +uint64_t session_signed_pre_key_get_timestamp(const session_signed_pre_key *pre_key) +{ + return pre_key->timestamp; +} + +ec_key_pair *session_signed_pre_key_get_key_pair(const session_signed_pre_key *pre_key) +{ + return pre_key->key_pair; +} + +const uint8_t *session_signed_pre_key_get_signature(const session_signed_pre_key *pre_key) +{ + return pre_key->signature; +} + +size_t session_signed_pre_key_get_signature_len(const session_signed_pre_key *pre_key) +{ + return pre_key->signature_len; +} + +void session_signed_pre_key_destroy(signal_type_base *type) +{ + session_signed_pre_key *pre_key = (session_signed_pre_key *)type; + + if(pre_key->key_pair) { + SIGNAL_UNREF(pre_key->key_pair); + } + + free(pre_key); +} + +/*------------------------------------------------------------------------*/ + +int session_pre_key_bundle_create(session_pre_key_bundle **bundle, + uint32_t registration_id, int device_id, uint32_t pre_key_id, + ec_public_key *pre_key_public, + uint32_t signed_pre_key_id, ec_public_key *signed_pre_key_public, + const uint8_t *signed_pre_key_signature_data, size_t signed_pre_key_signature_len, + ec_public_key *identity_key) +{ + int result = 0; + session_pre_key_bundle *result_bundle = 0; + + result_bundle = malloc(sizeof(session_pre_key_bundle)); + if(!result_bundle) { + result = SG_ERR_NOMEM; + goto complete; + } + + memset(result_bundle, 0, sizeof(session_pre_key_bundle)); + SIGNAL_INIT(result_bundle, session_pre_key_bundle_destroy); + + result_bundle->registration_id = registration_id; + result_bundle->device_id = device_id; + result_bundle->pre_key_id = pre_key_id; + + if(pre_key_public) { + SIGNAL_REF(pre_key_public); + result_bundle->pre_key_public = pre_key_public; + } + + result_bundle->signed_pre_key_id = signed_pre_key_id; + + if(signed_pre_key_public) { + SIGNAL_REF(signed_pre_key_public); + result_bundle->signed_pre_key_public = signed_pre_key_public; + } + + if(signed_pre_key_signature_data && signed_pre_key_signature_len > 0) { + result_bundle->signed_pre_key_signature = signal_buffer_create( + signed_pre_key_signature_data, signed_pre_key_signature_len); + } + + if(identity_key) { + SIGNAL_REF(identity_key); + result_bundle->identity_key = identity_key; + } + +complete: + if(result >= 0) { + *bundle = result_bundle; + } + else { + if(result_bundle) { + SIGNAL_UNREF(result_bundle); + } + } + return result; +} + +uint32_t session_pre_key_bundle_get_registration_id(const session_pre_key_bundle *bundle) +{ + assert(bundle); + return bundle->registration_id; +} + +int session_pre_key_bundle_get_device_id(const session_pre_key_bundle *bundle) +{ + assert(bundle); + return bundle->device_id; +} + +uint32_t session_pre_key_bundle_get_pre_key_id(const session_pre_key_bundle *bundle) +{ + assert(bundle); + return bundle->pre_key_id; +} + +ec_public_key *session_pre_key_bundle_get_pre_key(const session_pre_key_bundle *bundle) +{ + assert(bundle); + return bundle->pre_key_public; +} + +uint32_t session_pre_key_bundle_get_signed_pre_key_id(const session_pre_key_bundle *bundle) +{ + assert(bundle); + return bundle->signed_pre_key_id; +} + +ec_public_key *session_pre_key_bundle_get_signed_pre_key(const session_pre_key_bundle *bundle) +{ + assert(bundle); + return bundle->signed_pre_key_public; +} + +signal_buffer *session_pre_key_bundle_get_signed_pre_key_signature(const session_pre_key_bundle *bundle) +{ + assert(bundle); + return bundle->signed_pre_key_signature; +} + +ec_public_key *session_pre_key_bundle_get_identity_key(const session_pre_key_bundle *bundle) +{ + assert(bundle); + return bundle->identity_key; +} + +void session_pre_key_bundle_destroy(signal_type_base *type) +{ + session_pre_key_bundle *bundle = (session_pre_key_bundle *)type; + + if(bundle->pre_key_public) { + SIGNAL_UNREF(bundle->pre_key_public); + } + if(bundle->signed_pre_key_public) { + SIGNAL_UNREF(bundle->signed_pre_key_public); + } + if(bundle->signed_pre_key_signature) { + signal_buffer_free(bundle->signed_pre_key_signature); + } + if(bundle->identity_key) { + SIGNAL_UNREF(bundle->identity_key); + } + + free(bundle); +} diff --git a/Sources/libsignal/session_record.c b/Sources/libsignal/session_record.c new file mode 100755 index 0000000..e5ed577 --- /dev/null +++ b/Sources/libsignal/session_record.c @@ -0,0 +1,466 @@ +#include "session_record.h" + +#include +#include +#include + +#include "session_state.h" +#include "utlist.h" +#include "LocalStorageProtocol.pb-c.h" +#include "signal_protocol_internal.h" + +#define ARCHIVED_STATES_MAX_LENGTH 40 + +struct session_record_state_node +{ + session_state *state; + struct session_record_state_node *prev, *next; +}; + +struct session_record +{ + signal_type_base base; + session_state *state; + session_record_state_node *previous_states_head; + int is_fresh; + signal_buffer *user_record; + signal_context *global_context; +}; + +static void session_record_free_previous_states(session_record *record); + +int session_record_create(session_record **record, session_state *state, signal_context *global_context) +{ + session_record *result = malloc(sizeof(session_record)); + if(!result) { + return SG_ERR_NOMEM; + } + memset(result, 0, sizeof(session_record)); + SIGNAL_INIT(result, session_record_destroy); + + if(!state) { + int ret = session_state_create(&result->state, global_context); + if(ret < 0) { + SIGNAL_UNREF(result); + return ret; + } + result->is_fresh = 1; + } + else { + SIGNAL_REF(state); + result->state = state; + result->is_fresh = 0; + } + result->global_context = global_context; + + *record = result; + return 0; +} + +int session_record_serialize(signal_buffer **buffer, const session_record *record) +{ + int result = 0; + size_t result_size = 0; + unsigned int i = 0; + Textsecure__RecordStructure record_structure = TEXTSECURE__RECORD_STRUCTURE__INIT; + session_record_state_node *cur_node = 0; + signal_buffer *result_buf = 0; + size_t len = 0; + uint8_t *data = 0; + + if(!record) { + result = SG_ERR_INVAL; + goto complete; + } + + if(record->state) { + record_structure.currentsession = malloc(sizeof(Textsecure__SessionStructure)); + if(!record_structure.currentsession) { + result = SG_ERR_NOMEM; + goto complete; + } + textsecure__session_structure__init(record_structure.currentsession); + result = session_state_serialize_prepare(record->state, record_structure.currentsession); + if(result < 0) { + goto complete; + } + } + + if(record->previous_states_head) { + size_t count; + DL_COUNT(record->previous_states_head, cur_node, count); + + if(count > SIZE_MAX / sizeof(Textsecure__SessionStructure *)) { + result = SG_ERR_NOMEM; + goto complete; + } + + record_structure.previoussessions = malloc(sizeof(Textsecure__SessionStructure *) * count); + if(!record_structure.previoussessions) { + result = SG_ERR_NOMEM; + goto complete; + } + + i = 0; + DL_FOREACH(record->previous_states_head, cur_node) { + record_structure.previoussessions[i] = malloc(sizeof(Textsecure__SessionStructure)); + if(!record_structure.previoussessions[i]) { + result = SG_ERR_NOMEM; + break; + } + textsecure__session_structure__init(record_structure.previoussessions[i]); + result = session_state_serialize_prepare(cur_node->state, record_structure.previoussessions[i]); + if(result < 0) { + break; + } + i++; + } + record_structure.n_previoussessions = i; + if(result < 0) { + goto complete; + } + } + + len = textsecure__record_structure__get_packed_size(&record_structure); + + result_buf = signal_buffer_alloc(len); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + result_size = textsecure__record_structure__pack(&record_structure, data); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(record_structure.currentsession) { + session_state_serialize_prepare_free(record_structure.currentsession); + } + if(record_structure.previoussessions) { + for(i = 0; i < record_structure.n_previoussessions; i++) { + if(record_structure.previoussessions[i]) { + session_state_serialize_prepare_free(record_structure.previoussessions[i]); + } + } + free(record_structure.previoussessions); + } + + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int session_record_deserialize(session_record **record, const uint8_t *data, size_t len, signal_context *global_context) +{ + int result = 0; + session_record *result_record = 0; + session_state *current_state = 0; + session_record_state_node *previous_states_head = 0; + Textsecure__RecordStructure *record_structure = 0; + + record_structure = textsecure__record_structure__unpack(0, len, data); + if(!record_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + if(record_structure->currentsession) { + result = session_state_deserialize_protobuf(¤t_state, record_structure->currentsession, global_context); + if(result < 0) { + goto complete; + } + } + + result = session_record_create(&result_record, current_state, global_context); + if(result < 0) { + goto complete; + } + SIGNAL_UNREF(current_state); + current_state = 0; + result_record->is_fresh = 0; + + if(record_structure->n_previoussessions > 0) { + unsigned int i; + for(i = 0; i < record_structure->n_previoussessions; i++) { + Textsecure__SessionStructure *session_structure = + record_structure->previoussessions[i]; + + session_record_state_node *node = malloc(sizeof(session_record_state_node)); + if(!node) { + result = SG_ERR_NOMEM; + goto complete; + } + + result = session_state_deserialize_protobuf(&node->state, session_structure, global_context); + if(result < 0) { + free(node); + goto complete; + } + + DL_APPEND(previous_states_head, node); + } + } + result_record->previous_states_head = previous_states_head; + previous_states_head = 0; + +complete: + if(record_structure) { + textsecure__record_structure__free_unpacked(record_structure, 0); + } + if(current_state) { + SIGNAL_UNREF(current_state); + } + if(previous_states_head) { + session_record_state_node *cur_node; + session_record_state_node *tmp_node; + DL_FOREACH_SAFE(previous_states_head, cur_node, tmp_node) { + DL_DELETE(previous_states_head, cur_node); + free(cur_node); + } + } + if(result_record) { + if(result < 0) { + SIGNAL_UNREF(result_record); + } + else { + *record = result_record; + } + } + + return result; +} + +int session_record_copy(session_record **record, session_record *other_record, signal_context *global_context) +{ + int result = 0; + session_record *result_record = 0; + signal_buffer *buffer = 0; + size_t len = 0; + uint8_t *data = 0; + + assert(other_record); + assert(global_context); + + result = session_record_serialize(&buffer, other_record); + if(result < 0) { + goto complete; + } + + data = signal_buffer_data(buffer); + len = signal_buffer_len(buffer); + + result = session_record_deserialize(&result_record, data, len, global_context); + if(result < 0) { + goto complete; + } + if(other_record->user_record) { + result_record->user_record = signal_buffer_copy(other_record->user_record); + if(!result_record->user_record) { + result = SG_ERR_NOMEM; + goto complete; + } + } + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + if(result >= 0) { + *record = result_record; + } + else { + SIGNAL_UNREF(result_record); + } + return result; +} + +int session_record_has_session_state(session_record *record, uint32_t version, const ec_public_key *alice_base_key) +{ + session_record_state_node *cur_node = 0; + + assert(record); + assert(record->state); + + if(session_state_get_session_version(record->state) == version && + ec_public_key_compare( + session_state_get_alice_base_key(record->state), + alice_base_key) == 0) { + return 1; + } + + DL_FOREACH(record->previous_states_head, cur_node) { + if(session_state_get_session_version(cur_node->state) == version && + ec_public_key_compare( + session_state_get_alice_base_key(cur_node->state), + alice_base_key) == 0) { + return 1; + } + } + + return 0; +} + +session_state *session_record_get_state(session_record *record) +{ + return record->state; +} + +void session_record_set_state(session_record *record, session_state *state) +{ + assert(record); + assert(state); + if(record->state) { + SIGNAL_UNREF(record->state); + } + SIGNAL_REF(state); + record->state = state; +} + +session_record_state_node *session_record_get_previous_states_head(const session_record *record) +{ + assert(record); + return record->previous_states_head; +} + +session_state *session_record_get_previous_states_element(const session_record_state_node *node) +{ + assert(node); + return node->state; +} + +session_record_state_node *session_record_get_previous_states_next(const session_record_state_node *node) +{ + assert(node); + return node->next; +} + +session_record_state_node *session_record_get_previous_states_remove(session_record *record, session_record_state_node *node) +{ + session_record_state_node *next_node = 0; + + assert(record); + assert(node); + + next_node = node->next; + DL_DELETE(record->previous_states_head, node); + SIGNAL_UNREF(node->state); + free(node); + return next_node; +} + +int session_record_is_fresh(session_record *record) +{ + assert(record); + return record->is_fresh; +} + +int session_record_archive_current_state(session_record *record) +{ + int result = 0; + session_state *new_state = 0; + + assert(record); + + result = session_state_create(&new_state, record->global_context); + if(result < 0) { + goto complete; + } + + result = session_record_promote_state(record, new_state); + +complete: + SIGNAL_UNREF(new_state); + return result; +} + +int session_record_promote_state(session_record *record, session_state *promoted_state) +{ + int count = 0; + session_record_state_node *cur_node = 0; + session_record_state_node *tmp_node = 0; + + assert(record); + assert(promoted_state); + + // Move the previously current state to the list of previous states + if(record->state) { + session_record_state_node *node = malloc(sizeof(session_record_state_node)); + if(!node) { + return SG_ERR_NOMEM; + } + + node->state = record->state; + DL_PREPEND(record->previous_states_head, node); + record->state = 0; + } + + // Make the promoted state the current state + SIGNAL_REF(promoted_state); + record->state = promoted_state; + + // Remove any previous nodes beyond the maximum length + DL_FOREACH_SAFE(record->previous_states_head, cur_node, tmp_node) { + count++; + if(count > ARCHIVED_STATES_MAX_LENGTH) { + DL_DELETE(record->previous_states_head, cur_node); + if(cur_node->state) { + SIGNAL_UNREF(cur_node->state); + } + free(cur_node); + } + } + + return 0; +} + +static void session_record_free_previous_states(session_record *record) +{ + session_record_state_node *cur_node; + session_record_state_node *tmp_node; + DL_FOREACH_SAFE(record->previous_states_head, cur_node, tmp_node) { + DL_DELETE(record->previous_states_head, cur_node); + if(cur_node->state) { + SIGNAL_UNREF(cur_node->state); + } + free(cur_node); + } + record->previous_states_head = 0; +} + +signal_buffer *session_record_get_user_record(const session_record *record) +{ + assert(record); + return record->user_record; +} + +void session_record_set_user_record(session_record *record, signal_buffer *user_record) +{ + assert(record); + if(record->user_record) { + signal_buffer_free(record->user_record); + } + record->user_record = user_record; +} + +void session_record_destroy(signal_type_base *type) +{ + session_record *record = (session_record *)type; + + if(record->state) { + SIGNAL_UNREF(record->state); + } + session_record_free_previous_states(record); + + if(record->user_record) { + signal_buffer_free(record->user_record); + } + + free(record); +} diff --git a/Sources/libsignal/session_state.c b/Sources/libsignal/session_state.c new file mode 100755 index 0000000..a4dfb9a --- /dev/null +++ b/Sources/libsignal/session_state.c @@ -0,0 +1,1856 @@ +#include "session_state.h" + +#include +#include +#include + +#include "hkdf.h" +#include "curve.h" +#include "ratchet.h" +#include "LocalStorageProtocol.pb-c.h" +#include "signal_protocol_internal.h" + +#include "utlist.h" + +#define MAX_MESSAGE_KEYS 2000 + +typedef struct message_keys_node +{ + ratchet_message_keys message_key; + struct message_keys_node *prev, *next; +} message_keys_node; + +typedef struct session_state_sender_chain +{ + ec_key_pair *sender_ratchet_key_pair; + ratchet_chain_key *chain_key; +} session_state_sender_chain; + +typedef struct session_state_receiver_chain +{ + ec_public_key *sender_ratchet_key; + ratchet_chain_key *chain_key; + message_keys_node *message_keys_head; + struct session_state_receiver_chain *prev, *next; +} session_state_receiver_chain; + +typedef struct session_pending_key_exchange +{ + uint32_t sequence; + ec_key_pair *local_base_key; + ec_key_pair *local_ratchet_key; + ratchet_identity_key_pair *local_identity_key; +} session_pending_key_exchange; + +typedef struct session_pending_pre_key +{ + int has_pre_key_id; + uint32_t pre_key_id; + uint32_t signed_pre_key_id; + ec_public_key *base_key; +} session_pending_pre_key; + +struct session_state +{ + signal_type_base base; + + uint32_t session_version; + ec_public_key *local_identity_public; + ec_public_key *remote_identity_public; + + ratchet_root_key *root_key; + uint32_t previous_counter; + + int has_sender_chain; + session_state_sender_chain sender_chain; + + session_state_receiver_chain *receiver_chain_head; + + int has_pending_key_exchange; + session_pending_key_exchange pending_key_exchange; + + int has_pending_pre_key; + session_pending_pre_key pending_pre_key; + + uint32_t remote_registration_id; + uint32_t local_registration_id; + + int needs_refresh; + ec_public_key *alice_base_key; + + signal_context *global_context; +}; + +static int session_state_serialize_prepare_sender_chain( + session_state_sender_chain *chain, + Textsecure__SessionStructure__Chain *chain_structure); +static int session_state_serialize_prepare_receiver_chain( + session_state_receiver_chain *chain, + Textsecure__SessionStructure__Chain *chain_structure); +static void session_state_serialize_prepare_chain_free( + Textsecure__SessionStructure__Chain *chain_structure); +static int session_state_serialize_prepare_chain_chain_key( + ratchet_chain_key *chain_key, + Textsecure__SessionStructure__Chain *chain_structure); +static int session_state_serialize_prepare_chain_message_keys_list( + message_keys_node *message_keys_head, + Textsecure__SessionStructure__Chain *chain_structure); +static int session_state_serialize_prepare_message_keys( + ratchet_message_keys *message_key, + Textsecure__SessionStructure__Chain__MessageKey *message_key_structure); +static void session_state_serialize_prepare_message_keys_free( + Textsecure__SessionStructure__Chain__MessageKey *message_key_structure); +static int session_state_serialize_prepare_pending_key_exchange( + session_pending_key_exchange *exchange, + Textsecure__SessionStructure__PendingKeyExchange *exchange_structure); +static void session_state_serialize_prepare_pending_key_exchange_free( + Textsecure__SessionStructure__PendingKeyExchange *exchange_structure); +static int session_state_serialize_prepare_pending_pre_key( + session_pending_pre_key *pre_key, + Textsecure__SessionStructure__PendingPreKey *pre_key_structure); +static void session_state_serialize_prepare_pending_pre_key_free( + Textsecure__SessionStructure__PendingPreKey *pre_key_structure); + +static int session_state_deserialize_protobuf_pending_key_exchange( + session_pending_key_exchange *result_exchange, + Textsecure__SessionStructure__PendingKeyExchange *exchange_structure, + signal_context *global_context); +static int session_state_deserialize_protobuf_pending_pre_key( + session_pending_pre_key *result_pre_key, + Textsecure__SessionStructure__PendingPreKey *pre_key_structure, + signal_context *global_context); +static int session_state_deserialize_protobuf_sender_chain( + uint32_t session_version, + session_state_sender_chain *chain, + Textsecure__SessionStructure__Chain *chain_structure, + signal_context *global_context); +static int session_state_deserialize_protobuf_receiver_chain( + uint32_t session_version, + session_state_receiver_chain *chain, + Textsecure__SessionStructure__Chain *chain_structure, + signal_context *global_context); + +static void session_state_free_sender_chain(session_state *state); +static void session_state_free_receiver_chain_node(session_state_receiver_chain *node); +static void session_state_free_receiver_chain(session_state *state); +static session_state_receiver_chain *session_state_find_receiver_chain(const session_state *state, const ec_public_key *sender_ephemeral); + +int session_state_create(session_state **state, signal_context *global_context) +{ + session_state *result = malloc(sizeof(session_state)); + if(!result) { + return SG_ERR_NOMEM; + } + memset(result, 0, sizeof(session_state)); + SIGNAL_INIT(result, session_state_destroy); + result->session_version = 2; + result->global_context = global_context; + + *state = result; + return 0; +} + +int session_state_serialize(signal_buffer **buffer, session_state *state) +{ + int result = 0; + size_t result_size = 0; + Textsecure__SessionStructure *state_structure = 0; + signal_buffer *result_buf = 0; + size_t len = 0; + uint8_t *data = 0; + + state_structure = malloc(sizeof(Textsecure__SessionStructure)); + if(!state_structure) { + result = SG_ERR_NOMEM; + goto complete; + } + textsecure__session_structure__init(state_structure); + + result = session_state_serialize_prepare(state, state_structure); + if(result < 0) { + goto complete; + } + + len = textsecure__session_structure__get_packed_size(state_structure); + + result_buf = signal_buffer_alloc(len); + if(!result_buf) { + result = SG_ERR_NOMEM; + goto complete; + } + + data = signal_buffer_data(result_buf); + result_size = textsecure__session_structure__pack(state_structure, data); + if(result_size != len) { + signal_buffer_free(result_buf); + result = SG_ERR_INVALID_PROTO_BUF; + result_buf = 0; + goto complete; + } + +complete: + if(state_structure) { + session_state_serialize_prepare_free(state_structure); + } + if(result >= 0) { + *buffer = result_buf; + } + return result; +} + +int session_state_deserialize(session_state **state, const uint8_t *data, size_t len, signal_context *global_context) +{ + int result = 0; + session_state *result_state = 0; + Textsecure__SessionStructure *session_structure = 0; + + session_structure = textsecure__session_structure__unpack(0, len, data); + if(!session_structure) { + result = SG_ERR_INVALID_PROTO_BUF; + goto complete; + } + + result = session_state_deserialize_protobuf(&result_state, session_structure, global_context); + if(result < 0) { + goto complete; + } + +complete: + if(session_structure) { + textsecure__session_structure__free_unpacked(session_structure, 0); + } + if(result_state) { + if(result < 0) { + SIGNAL_UNREF(result_state); + } + else { + *state = result_state; + } + } + return result; +} + +int session_state_serialize_prepare(session_state *state, Textsecure__SessionStructure *session_structure) +{ + int result = 0; + + assert(state); + assert(session_structure); + + session_structure->has_sessionversion = 1; + session_structure->sessionversion = state->session_version; + + if(state->local_identity_public) { + result = ec_public_key_serialize_protobuf( + &session_structure->localidentitypublic, state->local_identity_public); + if(result < 0) { + goto complete; + } + session_structure->has_localidentitypublic = 1; + } + + if(state->remote_identity_public) { + result = ec_public_key_serialize_protobuf( + &session_structure->remoteidentitypublic, state->remote_identity_public); + if(result < 0) { + goto complete; + } + session_structure->has_remoteidentitypublic = 1; + } + + if(state->root_key) { + result = ratchet_root_key_get_key_protobuf( + state->root_key, &session_structure->rootkey); + if(result < 0) { + goto complete; + } + session_structure->has_rootkey = 1; + } + + session_structure->has_previouscounter = 1; + session_structure->previouscounter = state->previous_counter; + + + if(state->has_sender_chain) { + session_structure->senderchain = malloc(sizeof(Textsecure__SessionStructure__Chain)); + if(!session_structure->senderchain) { + result = SG_ERR_NOMEM; + goto complete; + } + textsecure__session_structure__chain__init(session_structure->senderchain); + result = session_state_serialize_prepare_sender_chain( + &state->sender_chain, session_structure->senderchain); + if(result < 0) { + goto complete; + } + } + + if(state->receiver_chain_head) { + size_t count, i = 0; + session_state_receiver_chain *cur_node; + DL_COUNT(state->receiver_chain_head, cur_node, count); + + if(count > SIZE_MAX / sizeof(Textsecure__SessionStructure__Chain *)) { + result = SG_ERR_NOMEM; + goto complete; + } + + session_structure->receiverchains = malloc(sizeof(Textsecure__SessionStructure__Chain *) * count); + if(!session_structure->receiverchains) { + result = SG_ERR_NOMEM; + goto complete; + } + + DL_FOREACH(state->receiver_chain_head, cur_node) { + session_structure->receiverchains[i] = malloc(sizeof(Textsecure__SessionStructure__Chain)); + if(!session_structure->receiverchains[i]) { + result = SG_ERR_NOMEM; + break; + } + textsecure__session_structure__chain__init(session_structure->receiverchains[i]); + result = session_state_serialize_prepare_receiver_chain(cur_node, session_structure->receiverchains[i]); + if(result < 0) { + break; + } + i++; + } + session_structure->n_receiverchains = i; + if(result < 0) { + goto complete; + } + } + + if(state->has_pending_key_exchange) { + session_structure->pendingkeyexchange = malloc(sizeof(Textsecure__SessionStructure__PendingKeyExchange)); + if(!session_structure->pendingkeyexchange) { + result = SG_ERR_NOMEM; + goto complete; + } + textsecure__session_structure__pending_key_exchange__init(session_structure->pendingkeyexchange); + result = session_state_serialize_prepare_pending_key_exchange( + &state->pending_key_exchange, + session_structure->pendingkeyexchange); + if(result < 0) { + goto complete; + } + } + + if(state->has_pending_pre_key) { + session_structure->pendingprekey = malloc(sizeof(Textsecure__SessionStructure__PendingPreKey)); + if(!session_structure->pendingprekey) { + result = SG_ERR_NOMEM; + goto complete; + } + textsecure__session_structure__pending_pre_key__init(session_structure->pendingprekey); + result = session_state_serialize_prepare_pending_pre_key( + &state->pending_pre_key, + session_structure->pendingprekey); + if(result < 0) { + goto complete; + } + } + + session_structure->has_remoteregistrationid = 1; + session_structure->remoteregistrationid = state->remote_registration_id; + + session_structure->has_localregistrationid = 1; + session_structure->localregistrationid = state->local_registration_id; + + session_structure->has_needsrefresh = 1; + session_structure->needsrefresh = state->needs_refresh; + + if(state->alice_base_key) { + result = ec_public_key_serialize_protobuf( + &session_structure->alicebasekey, state->alice_base_key); + if(result < 0) { + goto complete; + } + session_structure->has_alicebasekey = 1; + } + +complete: + return result; +} + +static int session_state_serialize_prepare_sender_chain( + session_state_sender_chain *chain, + Textsecure__SessionStructure__Chain *chain_structure) +{ + int result = 0; + + if(chain->sender_ratchet_key_pair) { + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + + public_key = ec_key_pair_get_public(chain->sender_ratchet_key_pair); + result = ec_public_key_serialize_protobuf(&chain_structure->senderratchetkey, public_key); + if(result < 0) { + goto complete; + } + chain_structure->has_senderratchetkey = 1; + + private_key = ec_key_pair_get_private(chain->sender_ratchet_key_pair); + result = ec_private_key_serialize_protobuf(&chain_structure->senderratchetkeyprivate, private_key); + if(result < 0) { + goto complete; + } + chain_structure->has_senderratchetkeyprivate = 1; + } + + if(chain->chain_key) { + result = session_state_serialize_prepare_chain_chain_key(chain->chain_key, chain_structure); + if(result < 0) { + goto complete; + } + } + +complete: + return result; +} + +static int session_state_serialize_prepare_receiver_chain( + session_state_receiver_chain *chain, + Textsecure__SessionStructure__Chain *chain_structure) +{ + int result = 0; + + if(chain->sender_ratchet_key) { + result = ec_public_key_serialize_protobuf(&chain_structure->senderratchetkey, chain->sender_ratchet_key); + if(result < 0) { + goto complete; + } + chain_structure->has_senderratchetkey = 1; + } + + if(chain->chain_key) { + result = session_state_serialize_prepare_chain_chain_key(chain->chain_key, chain_structure); + if(result < 0) { + goto complete; + } + } + + if(chain->message_keys_head) { + result = session_state_serialize_prepare_chain_message_keys_list(chain->message_keys_head, chain_structure); + if(result < 0) { + goto complete; + } + } + +complete: + return result; +} + +static int session_state_serialize_prepare_chain_chain_key( + ratchet_chain_key *chain_key, + Textsecure__SessionStructure__Chain *chain_structure) +{ + int result = 0; + chain_structure->chainkey = malloc(sizeof(Textsecure__SessionStructure__Chain__ChainKey)); + if(!chain_structure->chainkey) { + result = SG_ERR_NOMEM; + goto complete; + } + textsecure__session_structure__chain__chain_key__init(chain_structure->chainkey); + + chain_structure->chainkey->has_index = 1; + chain_structure->chainkey->index = ratchet_chain_key_get_index(chain_key); + + result = ratchet_chain_key_get_key_protobuf(chain_key, &chain_structure->chainkey->key); + if(result < 0) { + goto complete; + } + chain_structure->chainkey->has_key = 1; + +complete: + return result; +} + +static int session_state_serialize_prepare_chain_message_keys_list( + message_keys_node *message_keys_head, + Textsecure__SessionStructure__Chain *chain_structure) +{ + int result = 0; + size_t count, i = 0; + message_keys_node *cur_node; + DL_COUNT(message_keys_head, cur_node, count); + + if(count == 0) { + goto complete; + } + + if(count > SIZE_MAX / sizeof(Textsecure__SessionStructure__Chain__MessageKey *)) { + result = SG_ERR_NOMEM; + goto complete; + } + + chain_structure->messagekeys = malloc(sizeof(Textsecure__SessionStructure__Chain__MessageKey *) * count); + if(!chain_structure->messagekeys) { + result = SG_ERR_NOMEM; + goto complete; + } + + DL_FOREACH(message_keys_head, cur_node) { + chain_structure->messagekeys[i] = malloc(sizeof(Textsecure__SessionStructure__Chain__MessageKey)); + if(!chain_structure->messagekeys[i]) { + result = SG_ERR_NOMEM; + break; + } + textsecure__session_structure__chain__message_key__init(chain_structure->messagekeys[i]); + + result = session_state_serialize_prepare_message_keys(&cur_node->message_key, chain_structure->messagekeys[i]); + if(result < 0) { + break; + } + i++; + } + chain_structure->n_messagekeys = i; + if(result < 0) { + goto complete; + } + +complete: + return result; +} + +static int session_state_serialize_prepare_message_keys( + ratchet_message_keys *message_key, + Textsecure__SessionStructure__Chain__MessageKey *message_key_structure) +{ + int result = 0; + + message_key_structure->has_index = 1; + message_key_structure->index = message_key->counter; + + message_key_structure->cipherkey.data = malloc(sizeof(message_key->cipher_key)); + if(!message_key_structure->cipherkey.data) { + result = SG_ERR_NOMEM; + goto complete; + } + memcpy(message_key_structure->cipherkey.data, message_key->cipher_key, sizeof(message_key->cipher_key)); + message_key_structure->cipherkey.len = sizeof(message_key->cipher_key); + message_key_structure->has_cipherkey = 1; + + message_key_structure->mackey.data = malloc(sizeof(message_key->mac_key)); + if(!message_key_structure->mackey.data) { + result = SG_ERR_NOMEM; + goto complete; + } + memcpy(message_key_structure->mackey.data, message_key->mac_key, sizeof(message_key->mac_key)); + message_key_structure->mackey.len = sizeof(message_key->mac_key); + message_key_structure->has_mackey = 1; + + message_key_structure->iv.data = malloc(sizeof(message_key->iv)); + if(!message_key_structure->iv.data) { + result = SG_ERR_NOMEM; + goto complete; + } + memcpy(message_key_structure->iv.data, message_key->iv, sizeof(message_key->iv)); + message_key_structure->iv.len = sizeof(message_key->iv); + message_key_structure->has_iv = 1; + +complete: + return result; +} + +static void session_state_serialize_prepare_message_keys_free( + Textsecure__SessionStructure__Chain__MessageKey *message_key_structure) +{ + if(message_key_structure->has_cipherkey) { + free(message_key_structure->cipherkey.data); + } + if(message_key_structure->has_mackey) { + free(message_key_structure->mackey.data); + } + if(message_key_structure->has_iv) { + free(message_key_structure->iv.data); + } + free(message_key_structure); +} + +static int session_state_serialize_prepare_pending_key_exchange( + session_pending_key_exchange *exchange, + Textsecure__SessionStructure__PendingKeyExchange *exchange_structure) +{ + int result = 0; + + exchange_structure->has_sequence = 1; + exchange_structure->sequence = exchange->sequence; + + if(exchange->local_base_key) { + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + + public_key = ec_key_pair_get_public(exchange->local_base_key); + result = ec_public_key_serialize_protobuf(&exchange_structure->localbasekey, public_key); + if(result < 0) { + goto complete; + } + exchange_structure->has_localbasekey = 1; + + private_key = ec_key_pair_get_private(exchange->local_base_key); + result = ec_private_key_serialize_protobuf(&exchange_structure->localbasekeyprivate, private_key); + if(result < 0) { + goto complete; + } + exchange_structure->has_localbasekeyprivate = 1; + } + + if(exchange->local_ratchet_key) { + ec_public_key *public_key; + ec_private_key *private_key; + + public_key = ec_key_pair_get_public(exchange->local_ratchet_key); + result = ec_public_key_serialize_protobuf(&exchange_structure->localratchetkey, public_key); + if(result < 0) { + goto complete; + } + exchange_structure->has_localratchetkey = 1; + + private_key = ec_key_pair_get_private(exchange->local_ratchet_key); + result = ec_private_key_serialize_protobuf(&exchange_structure->localratchetkeyprivate, private_key); + if(result < 0) { + goto complete; + } + exchange_structure->has_localratchetkeyprivate = 1; + } + + if(exchange->local_identity_key) { + ec_public_key *public_key; + ec_private_key *private_key; + + public_key = ratchet_identity_key_pair_get_public(exchange->local_identity_key); + result = ec_public_key_serialize_protobuf(&exchange_structure->localidentitykey, public_key); + if(result < 0) { + goto complete; + } + exchange_structure->has_localidentitykey = 1; + + private_key = ratchet_identity_key_pair_get_private(exchange->local_identity_key); + result = ec_private_key_serialize_protobuf(&exchange_structure->localidentitykeyprivate, private_key); + if(result < 0) { + goto complete; + } + exchange_structure->has_localidentitykeyprivate = 1; + } + +complete: + return result; +} + +static int session_state_serialize_prepare_pending_pre_key( + session_pending_pre_key *pre_key, + Textsecure__SessionStructure__PendingPreKey *pre_key_structure) +{ + int result = 0; + + if(pre_key->has_pre_key_id) { + pre_key_structure->has_prekeyid = 1; + pre_key_structure->prekeyid = pre_key->pre_key_id; + } + + pre_key_structure->has_signedprekeyid = 1; + pre_key_structure->signedprekeyid = (int32_t)pre_key->signed_pre_key_id; + + if(pre_key->base_key) { + result = ec_public_key_serialize_protobuf(&pre_key_structure->basekey, pre_key->base_key); + if(result < 0) { + goto complete; + } + pre_key_structure->has_basekey = 1; + } + +complete: + return result; +} + +void session_state_serialize_prepare_free(Textsecure__SessionStructure *session_structure) +{ + assert(session_structure); + + if(session_structure->has_localidentitypublic) { + free(session_structure->localidentitypublic.data); + } + + if(session_structure->has_remoteidentitypublic) { + free(session_structure->remoteidentitypublic.data); + } + + if(session_structure->has_rootkey) { + free(session_structure->rootkey.data); + } + + if(session_structure->senderchain) { + session_state_serialize_prepare_chain_free(session_structure->senderchain); + } + + if(session_structure->receiverchains) { + unsigned int i; + for(i = 0; i < session_structure->n_receiverchains; i++) { + if(session_structure->receiverchains[i]) { + session_state_serialize_prepare_chain_free(session_structure->receiverchains[i]); + } + } + free(session_structure->receiverchains); + } + + if(session_structure->pendingkeyexchange) { + session_state_serialize_prepare_pending_key_exchange_free(session_structure->pendingkeyexchange); + } + + if(session_structure->pendingprekey) { + session_state_serialize_prepare_pending_pre_key_free(session_structure->pendingprekey); + } + + if(session_structure->has_alicebasekey) { + free(session_structure->alicebasekey.data); + } + + free(session_structure); +} + +static void session_state_serialize_prepare_chain_free( + Textsecure__SessionStructure__Chain *chain_structure) +{ + if(chain_structure->has_senderratchetkey) { + free(chain_structure->senderratchetkey.data); + } + if(chain_structure->has_senderratchetkeyprivate) { + free(chain_structure->senderratchetkeyprivate.data); + } + if(chain_structure->chainkey) { + if(chain_structure->chainkey->has_key) { + free(chain_structure->chainkey->key.data); + } + free(chain_structure->chainkey); + } + if(chain_structure->messagekeys) { + unsigned int i; + for(i = 0; i < chain_structure->n_messagekeys; i++) { + if(chain_structure->messagekeys[i]) { + session_state_serialize_prepare_message_keys_free(chain_structure->messagekeys[i]); + } + } + free(chain_structure->messagekeys); + } + free(chain_structure); +} + +static void session_state_serialize_prepare_pending_key_exchange_free( + Textsecure__SessionStructure__PendingKeyExchange *exchange_structure) +{ + if(exchange_structure->has_localbasekey) { + free(exchange_structure->localbasekey.data); + } + if(exchange_structure->has_localbasekeyprivate) { + free(exchange_structure->localbasekeyprivate.data); + } + if(exchange_structure->has_localratchetkey) { + free(exchange_structure->localratchetkey.data); + } + if(exchange_structure->has_localratchetkeyprivate) { + free(exchange_structure->localratchetkeyprivate.data); + } + if(exchange_structure->has_localidentitykey) { + free(exchange_structure->localidentitykey.data); + } + if(exchange_structure->has_localidentitykeyprivate) { + free(exchange_structure->localidentitykeyprivate.data); + } + free(exchange_structure); +} + +static void session_state_serialize_prepare_pending_pre_key_free( + Textsecure__SessionStructure__PendingPreKey *pre_key_structure) +{ + if(pre_key_structure->has_basekey) { + free(pre_key_structure->basekey.data); + } + + free(pre_key_structure); +} + +int session_state_deserialize_protobuf(session_state **state, Textsecure__SessionStructure *session_structure, signal_context *global_context) +{ + int result = 0; + session_state *result_state = 0; + + result = session_state_create(&result_state, global_context); + if(result < 0) { + goto complete; + } + + if(session_structure->has_sessionversion) { + result_state->session_version = session_structure->sessionversion; + } + + if(session_structure->has_localidentitypublic) { + result = curve_decode_point( + &result_state->local_identity_public, + session_structure->localidentitypublic.data, + session_structure->localidentitypublic.len, + global_context); + if(result < 0) { + goto complete; + } + } + + if(session_structure->has_remoteidentitypublic) { + result = curve_decode_point( + &result_state->remote_identity_public, + session_structure->remoteidentitypublic.data, + session_structure->remoteidentitypublic.len, + global_context); + if(result < 0) { + goto complete; + } + } + + if(session_structure->has_rootkey) { + hkdf_context *kdf = 0; + result = hkdf_create(&kdf, (int)result_state->session_version, global_context); + if(result < 0) { + goto complete; + } + + result = ratchet_root_key_create( + &result_state->root_key, kdf, + session_structure->rootkey.data, + session_structure->rootkey.len, global_context); + SIGNAL_UNREF(kdf); + if(result < 0) { + goto complete; + } + } + + if(session_structure->has_previouscounter) { + result_state->previous_counter = session_structure->previouscounter; + } + + if(session_structure->senderchain) { + session_state_deserialize_protobuf_sender_chain( + result_state->session_version, + &result_state->sender_chain, session_structure->senderchain, + global_context); + if(result < 0) { + goto complete; + } + result_state->has_sender_chain = 1; + } + + if(session_structure->n_receiverchains > 0) { + unsigned int i; + for(i = 0; i < session_structure->n_receiverchains; i++) { + session_state_receiver_chain *node = malloc(sizeof(session_state_receiver_chain)); + if(!node) { + result = SG_ERR_NOMEM; + goto complete; + } + memset(node, 0, sizeof(session_state_receiver_chain)); + + result = session_state_deserialize_protobuf_receiver_chain( + result_state->session_version, + node, session_structure->receiverchains[i], + global_context); + if(result < 0) { + free(node); + goto complete; + } + + DL_APPEND(result_state->receiver_chain_head, node); + } + } + + if(session_structure->pendingkeyexchange) { + result = session_state_deserialize_protobuf_pending_key_exchange( + &result_state->pending_key_exchange, + session_structure->pendingkeyexchange, global_context); + if(result < 0) { + goto complete; + } + result_state->has_pending_key_exchange = 1; + } + + if(session_structure->pendingprekey) { + result = session_state_deserialize_protobuf_pending_pre_key( + &result_state->pending_pre_key, + session_structure->pendingprekey, global_context); + if(result < 0) { + goto complete; + } + result_state->has_pending_pre_key = 1; + } + + if(session_structure->has_remoteregistrationid) { + result_state->remote_registration_id = session_structure->remoteregistrationid; + } + + if(session_structure->has_localregistrationid) { + result_state->local_registration_id = session_structure->localregistrationid; + } + + if(session_structure->has_needsrefresh) { + result_state->needs_refresh = session_structure->needsrefresh; + } + + if(session_structure->has_alicebasekey) { + result = curve_decode_point( + &result_state->alice_base_key, + session_structure->alicebasekey.data, + session_structure->alicebasekey.len, + global_context); + if(result < 0) { + goto complete; + } + } + +complete: + if(result >= 0) { + *state = result_state; + } + else { + if(result_state) { + SIGNAL_UNREF(result_state); + } + } + return result; +} + +static int session_state_deserialize_protobuf_pending_key_exchange( + session_pending_key_exchange *result_exchange, + Textsecure__SessionStructure__PendingKeyExchange *exchange_structure, + signal_context *global_context) +{ + int result = 0; + + ec_key_pair *local_base_key = 0; + ec_public_key *local_base_key_public = 0; + ec_private_key *local_base_key_private = 0; + + ec_key_pair *local_ratchet_key = 0; + ec_public_key *local_ratchet_key_public = 0; + ec_private_key *local_ratchet_key_private = 0; + + ratchet_identity_key_pair *local_identity_key = 0; + ec_public_key *local_identity_key_public = 0; + ec_private_key *local_identity_key_private = 0; + + if(exchange_structure->has_localbasekey && exchange_structure->has_localbasekeyprivate) { + result = curve_decode_point(&local_base_key_public, + exchange_structure->localbasekey.data, + exchange_structure->localbasekey.len, + global_context); + if(result < 0) { + goto complete; + } + + result = curve_decode_private_point(&local_base_key_private, + exchange_structure->localbasekeyprivate.data, + exchange_structure->localbasekeyprivate.len, + global_context); + if(result < 0) { + goto complete; + } + + result = ec_key_pair_create(&local_base_key, + local_base_key_public, local_base_key_private); + if(result < 0) { + goto complete; + } + } + + if(exchange_structure->has_localratchetkey && exchange_structure->has_localratchetkeyprivate) { + result = curve_decode_point(&local_ratchet_key_public, + exchange_structure->localratchetkey.data, + exchange_structure->localratchetkey.len, + global_context); + if(result < 0) { + goto complete; + } + + result = curve_decode_private_point(&local_ratchet_key_private, + exchange_structure->localratchetkeyprivate.data, + exchange_structure->localratchetkeyprivate.len, + global_context); + if(result < 0) { + goto complete; + } + + result = ec_key_pair_create(&local_ratchet_key, + local_ratchet_key_public, local_ratchet_key_private); + if(result < 0) { + goto complete; + } + } + + if(exchange_structure->has_localidentitykey && exchange_structure->has_localidentitykeyprivate) { + result = curve_decode_point(&local_identity_key_public, + exchange_structure->localidentitykey.data, + exchange_structure->localidentitykey.len, + global_context); + if(result < 0) { + goto complete; + } + + result = curve_decode_private_point(&local_identity_key_private, + exchange_structure->localidentitykeyprivate.data, + exchange_structure->localidentitykeyprivate.len, + global_context); + if(result < 0) { + goto complete; + } + + result = ratchet_identity_key_pair_create(&local_identity_key, + local_identity_key_public, + local_identity_key_private); + if(result < 0) { + goto complete; + } + } + + result_exchange->sequence = exchange_structure->sequence; + result_exchange->local_base_key = local_base_key; + result_exchange->local_ratchet_key = local_ratchet_key; + result_exchange->local_identity_key = local_identity_key; + +complete: + SIGNAL_UNREF(local_base_key_public); + SIGNAL_UNREF(local_base_key_private); + SIGNAL_UNREF(local_ratchet_key_public); + SIGNAL_UNREF(local_ratchet_key_private); + SIGNAL_UNREF(local_identity_key_public); + SIGNAL_UNREF(local_identity_key_private); + + if(result < 0) { + SIGNAL_UNREF(local_base_key); + SIGNAL_UNREF(local_ratchet_key); + SIGNAL_UNREF(local_identity_key); + } + + return result; +} + +static int session_state_deserialize_protobuf_pending_pre_key( + session_pending_pre_key *result_pre_key, + Textsecure__SessionStructure__PendingPreKey *pre_key_structure, + signal_context *global_context) +{ + int result = 0; + + if(pre_key_structure->has_basekey) { + ec_public_key *base_key = 0; + result = curve_decode_point(&base_key, + pre_key_structure->basekey.data, + pre_key_structure->basekey.len, + global_context); + if(result < 0) { + goto complete; + } + result_pre_key->base_key = base_key; + } + + if(pre_key_structure->has_prekeyid) { + result_pre_key->has_pre_key_id = 1; + result_pre_key->pre_key_id = pre_key_structure->prekeyid; + } + + if(pre_key_structure->has_signedprekeyid) { + result_pre_key->signed_pre_key_id = (uint32_t)pre_key_structure->signedprekeyid; + } + +complete: + return result; +} + +static int session_state_deserialize_protobuf_sender_chain( + uint32_t session_version, + session_state_sender_chain *chain, + Textsecure__SessionStructure__Chain *chain_structure, + signal_context *global_context) +{ + int result = 0; + hkdf_context *kdf = 0; + ec_key_pair *sender_ratchet_key_pair = 0; + ec_public_key *sender_ratchet_key_public = 0; + ec_private_key *sender_ratchet_key_private = 0; + ratchet_chain_key *sender_chain_key = 0; + + if(chain_structure->has_senderratchetkey && chain_structure->has_senderratchetkeyprivate) { + result = curve_decode_point(&sender_ratchet_key_public, + chain_structure->senderratchetkey.data, + chain_structure->senderratchetkey.len, + global_context); + if(result < 0) { + goto complete; + } + + result = curve_decode_private_point(&sender_ratchet_key_private, + chain_structure->senderratchetkeyprivate.data, + chain_structure->senderratchetkeyprivate.len, + global_context); + if(result < 0) { + goto complete; + } + + result = ec_key_pair_create(&sender_ratchet_key_pair, + sender_ratchet_key_public, sender_ratchet_key_private); + if(result < 0) { + goto complete; + } + } + + if(chain_structure->chainkey && chain_structure->chainkey->has_key && chain_structure->chainkey->has_index) { + result = hkdf_create(&kdf, (int)session_version, global_context); + if(result < 0) { + goto complete; + } + + result = ratchet_chain_key_create( + &sender_chain_key, kdf, + chain_structure->chainkey->key.data, + chain_structure->chainkey->key.len, + chain_structure->chainkey->index, + global_context); + if(result < 0) { + goto complete; + } + } + + chain->sender_ratchet_key_pair = sender_ratchet_key_pair; + chain->chain_key = sender_chain_key; + +complete: + SIGNAL_UNREF(kdf); + SIGNAL_UNREF(sender_ratchet_key_public); + SIGNAL_UNREF(sender_ratchet_key_private); + if(result < 0) { + SIGNAL_UNREF(sender_ratchet_key_pair); + SIGNAL_UNREF(sender_chain_key); + } + return result; +} + +static int session_state_deserialize_protobuf_receiver_chain( + uint32_t session_version, + session_state_receiver_chain *chain, + Textsecure__SessionStructure__Chain *chain_structure, + signal_context *global_context) +{ + int result = 0; + + hkdf_context *kdf = 0; + ec_public_key *sender_ratchet_key = 0; + ratchet_chain_key *chain_key = 0; + message_keys_node *message_keys_head = 0; + + if(chain_structure->has_senderratchetkey) { + result = curve_decode_point(&sender_ratchet_key, + chain_structure->senderratchetkey.data, + chain_structure->senderratchetkey.len, + global_context); + if(result < 0) { + goto complete; + } + } + + if(chain_structure->chainkey && chain_structure->chainkey->has_key && chain_structure->chainkey->has_index) { + result = hkdf_create(&kdf, (int)session_version, global_context); + if(result < 0) { + goto complete; + } + + result = ratchet_chain_key_create( + &chain_key, kdf, + chain_structure->chainkey->key.data, + chain_structure->chainkey->key.len, + chain_structure->chainkey->index, + global_context); + if(result < 0) { + goto complete; + } + } + + if(chain_structure->n_messagekeys > 0) { + unsigned int i; + for(i = 0; i < chain_structure->n_messagekeys; i++) { + Textsecure__SessionStructure__Chain__MessageKey *key_structure = + chain_structure->messagekeys[i]; + + message_keys_node *node = malloc(sizeof(message_keys_node)); + if(!node) { + result = SG_ERR_NOMEM; + goto complete; + } + memset(node, 0, sizeof(message_keys_node)); + + if(key_structure->has_index) { + node->message_key.counter = key_structure->index; + } + if(key_structure->has_cipherkey && key_structure->cipherkey.len == sizeof(node->message_key.cipher_key)) { + memcpy(node->message_key.cipher_key, key_structure->cipherkey.data, key_structure->cipherkey.len); + } + if(key_structure->has_mackey && key_structure->mackey.len == sizeof(node->message_key.mac_key)) { + memcpy(node->message_key.mac_key, key_structure->mackey.data, key_structure->mackey.len); + } + if(key_structure->has_iv && key_structure->iv.len == sizeof(node->message_key.iv)) { + memcpy(node->message_key.iv, key_structure->iv.data, key_structure->iv.len); + } + + DL_APPEND(message_keys_head, node); + } + } + + chain->sender_ratchet_key = sender_ratchet_key; + chain->chain_key = chain_key; + chain->message_keys_head = message_keys_head; + +complete: + SIGNAL_UNREF(kdf); + if(result < 0) { + SIGNAL_UNREF(sender_ratchet_key); + SIGNAL_UNREF(chain_key); + if(message_keys_head) { + message_keys_node *cur_node; + message_keys_node *tmp_node; + DL_FOREACH_SAFE(message_keys_head, cur_node, tmp_node) { + DL_DELETE(message_keys_head, cur_node); + signal_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys)); + free(cur_node); + } + } + } + return result; +} + +int session_state_copy(session_state **state, session_state *other_state, signal_context *global_context) +{ + int result = 0; + signal_buffer *buffer = 0; + size_t len = 0; + uint8_t *data = 0; + + assert(other_state); + assert(global_context); + + result = session_state_serialize(&buffer, other_state); + if(result < 0) { + goto complete; + } + + data = signal_buffer_data(buffer); + len = signal_buffer_len(buffer); + + result = session_state_deserialize(state, data, len, global_context); + if(result < 0) { + goto complete; + } + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + return result; +} + +void session_state_set_session_version(session_state *state, uint32_t version) +{ + assert(state); + state->session_version = version; +} + +uint32_t session_state_get_session_version(const session_state *state) +{ + assert(state); + return state->session_version; +} + +void session_state_set_local_identity_key(session_state *state, ec_public_key *identity_key) +{ + assert(state); + assert(identity_key); + if(state->local_identity_public) { + SIGNAL_UNREF(state->local_identity_public); + } + SIGNAL_REF(identity_key); + state->local_identity_public = identity_key; +} + +ec_public_key *session_state_get_local_identity_key(const session_state *state) +{ + assert(state); + return state->local_identity_public; +} + +void session_state_set_remote_identity_key(session_state *state, ec_public_key *identity_key) +{ + assert(state); + assert(identity_key); + if(state->remote_identity_public) { + SIGNAL_UNREF(state->remote_identity_public); + } + SIGNAL_REF(identity_key); + state->remote_identity_public = identity_key; +} + +ec_public_key *session_state_get_remote_identity_key(const session_state *state) +{ + assert(state); + return state->remote_identity_public; +} + +void session_state_set_root_key(session_state *state, ratchet_root_key *root_key) +{ + assert(state); + assert(root_key); + if(state->root_key) { + SIGNAL_UNREF(state->root_key); + } + SIGNAL_REF(root_key); + state->root_key = root_key; +} + +ratchet_root_key *session_state_get_root_key(const session_state *state) +{ + assert(state); + return state->root_key; +} + +void session_state_set_previous_counter(session_state *state, uint32_t counter) +{ + assert(state); + state->previous_counter = counter; +} + +uint32_t session_state_get_previous_counter(const session_state *state) +{ + assert(state); + return state->previous_counter; +} + +void session_state_set_sender_chain(session_state *state, ec_key_pair *sender_ratchet_key_pair, ratchet_chain_key *chain_key) +{ + assert(state); + assert(sender_ratchet_key_pair); + assert(chain_key); + + state->has_sender_chain = 1; + + if(state->sender_chain.sender_ratchet_key_pair) { + SIGNAL_UNREF(state->sender_chain.sender_ratchet_key_pair); + } + SIGNAL_REF(sender_ratchet_key_pair); + state->sender_chain.sender_ratchet_key_pair = sender_ratchet_key_pair; + + if(state->sender_chain.chain_key) { + SIGNAL_UNREF(state->sender_chain.chain_key); + } + SIGNAL_REF(chain_key); + state->sender_chain.chain_key = chain_key; +} + +ec_public_key *session_state_get_sender_ratchet_key(const session_state *state) +{ + assert(state); + if(state->sender_chain.sender_ratchet_key_pair) { + return ec_key_pair_get_public(state->sender_chain.sender_ratchet_key_pair); + } + else { + return 0; + } +} + +ec_key_pair *session_state_get_sender_ratchet_key_pair(const session_state *state) +{ + assert(state); + return state->sender_chain.sender_ratchet_key_pair; +} + +ratchet_chain_key *session_state_get_sender_chain_key(const session_state *state) +{ + assert(state); + return state->sender_chain.chain_key; +} + +int session_state_set_sender_chain_key(session_state *state, ratchet_chain_key *chain_key) +{ + assert(state); + if(state->has_sender_chain) { + if(state->sender_chain.chain_key) { + SIGNAL_UNREF(state->sender_chain.chain_key); + } + SIGNAL_REF(chain_key); + state->sender_chain.chain_key = chain_key; + return 0; + } + else { + return SG_ERR_UNKNOWN; + } +} + +int session_state_has_sender_chain(const session_state *state) +{ + assert(state); + return state->has_sender_chain; +} + +int session_state_has_message_keys(session_state *state, ec_public_key *sender_ephemeral, uint32_t counter) +{ + session_state_receiver_chain *chain = 0; + message_keys_node *cur_node = 0; + + assert(state); + assert(sender_ephemeral); + + chain = session_state_find_receiver_chain(state, sender_ephemeral); + if(!chain) { + return 0; + } + + DL_FOREACH(chain->message_keys_head, cur_node) { + if(cur_node->message_key.counter == counter) { + return 1; + } + } + + return 0; +} + +int session_state_remove_message_keys(session_state *state, + ratchet_message_keys *message_keys_result, + ec_public_key *sender_ephemeral, uint32_t counter) +{ + session_state_receiver_chain *chain = 0; + message_keys_node *cur_node = 0; + message_keys_node *tmp_node = 0; + + assert(state); + assert(message_keys_result); + assert(sender_ephemeral); + + chain = session_state_find_receiver_chain(state, sender_ephemeral); + if(!chain) { + return 0; + } + + DL_FOREACH_SAFE(chain->message_keys_head, cur_node, tmp_node) { + if(cur_node->message_key.counter == counter) { + memcpy(message_keys_result, &(cur_node->message_key), sizeof(ratchet_message_keys)); + DL_DELETE(chain->message_keys_head, cur_node); + signal_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys)); + free(cur_node); + return 1; + } + } + + return 0; +} + +int session_state_set_message_keys(session_state *state, + ec_public_key *sender_ephemeral, ratchet_message_keys *message_keys) +{ + session_state_receiver_chain *chain = 0; + message_keys_node *node = 0; + int count; + + assert(state); + assert(sender_ephemeral); + assert(message_keys); + + chain = session_state_find_receiver_chain(state, sender_ephemeral); + if(!chain) { + return 0; + } + + node = malloc(sizeof(message_keys_node)); + if(!node) { + return SG_ERR_NOMEM; + } + memcpy(&(node->message_key), message_keys, sizeof(ratchet_message_keys)); + node->prev = 0; + node->next = 0; + + DL_APPEND(chain->message_keys_head, node); + + DL_COUNT(chain->message_keys_head, node, count); + while(count > MAX_MESSAGE_KEYS) { + node = chain->message_keys_head; + DL_DELETE(chain->message_keys_head, node); + signal_explicit_bzero(&node->message_key, sizeof(ratchet_message_keys)); + free(node); + --count; + } + + return 0; +} + +int session_state_add_receiver_chain(session_state *state, ec_public_key *sender_ratchet_key, ratchet_chain_key *chain_key) +{ + session_state_receiver_chain *node; + int count; + + assert(state); + assert(sender_ratchet_key); + assert(chain_key); + + node = malloc(sizeof(session_state_receiver_chain)); + if(!node) { + return SG_ERR_NOMEM; + } + memset(node, 0, sizeof(session_state_receiver_chain)); + + SIGNAL_REF(sender_ratchet_key); + node->sender_ratchet_key = sender_ratchet_key; + SIGNAL_REF(chain_key); + node->chain_key = chain_key; + + DL_APPEND(state->receiver_chain_head, node); + + DL_COUNT(state->receiver_chain_head, node, count); + while(count > 5) { + node = state->receiver_chain_head; + DL_DELETE(state->receiver_chain_head, node); + session_state_free_receiver_chain_node(node); + --count; + } + + return 0; +} + +int session_state_set_receiver_chain_key(session_state *state, ec_public_key *sender_ephemeral, ratchet_chain_key *chain_key) +{ + int result = 0; + session_state_receiver_chain *node; + + assert(state); + assert(sender_ephemeral); + assert(chain_key); + + node = session_state_find_receiver_chain(state, sender_ephemeral); + if(!node) { + signal_log(state->global_context, SG_LOG_WARNING, "Couldn't find receiver chain to set chain key on"); + result = SG_ERR_UNKNOWN; + goto complete; + } + + SIGNAL_UNREF(node->chain_key); + SIGNAL_REF(chain_key); + node->chain_key = chain_key; + +complete: + return result; +} + +static session_state_receiver_chain *session_state_find_receiver_chain(const session_state *state, const ec_public_key *sender_ephemeral) +{ + session_state_receiver_chain *result = 0; + + session_state_receiver_chain *cur_node; + DL_FOREACH(state->receiver_chain_head, cur_node) { + if(ec_public_key_compare(cur_node->sender_ratchet_key, sender_ephemeral) == 0) { + result = cur_node; + break; + } + } + + return result; +} + +ratchet_chain_key *session_state_get_receiver_chain_key(session_state *state, ec_public_key *sender_ephemeral) +{ + ratchet_chain_key *result = 0; + session_state_receiver_chain *node = session_state_find_receiver_chain(state, sender_ephemeral); + + if(node) { + result = node->chain_key; + } + + return result; +} + +void session_state_set_pending_key_exchange(session_state *state, + uint32_t sequence, + ec_key_pair *our_base_key, ec_key_pair *our_ratchet_key, + ratchet_identity_key_pair *our_identity_key) +{ + assert(state); + assert(our_base_key); + assert(our_ratchet_key); + assert(our_identity_key); + + if(state->pending_key_exchange.local_base_key) { + SIGNAL_UNREF(state->pending_key_exchange.local_base_key); + state->pending_key_exchange.local_base_key = 0; + } + if(state->pending_key_exchange.local_ratchet_key) { + SIGNAL_UNREF(state->pending_key_exchange.local_ratchet_key); + state->pending_key_exchange.local_ratchet_key = 0; + } + if(state->pending_key_exchange.local_identity_key) { + SIGNAL_UNREF(state->pending_key_exchange.local_identity_key); + state->pending_key_exchange.local_identity_key = 0; + } + + SIGNAL_REF(our_base_key); + SIGNAL_REF(our_ratchet_key); + SIGNAL_REF(our_identity_key); + + state->has_pending_key_exchange = 1; + state->pending_key_exchange.sequence = sequence; + state->pending_key_exchange.local_base_key = our_base_key; + state->pending_key_exchange.local_ratchet_key = our_ratchet_key; + state->pending_key_exchange.local_identity_key = our_identity_key; +} + +uint32_t session_state_get_pending_key_exchange_sequence(session_state *state) +{ + assert(state); + if(state->has_pending_key_exchange) { + return state->pending_key_exchange.sequence; + } + else { + return 0; + } +} + +ec_key_pair *session_state_get_pending_key_exchange_base_key(const session_state *state) +{ + assert(state); + if(state->has_pending_key_exchange) { + return state->pending_key_exchange.local_base_key; + } + else { + return 0; + } +} + +ec_key_pair *session_state_get_pending_key_exchange_ratchet_key(const session_state *state) +{ + assert(state); + if(state->has_pending_key_exchange) { + return state->pending_key_exchange.local_ratchet_key; + } + else { + return 0; + } +} + +ratchet_identity_key_pair *session_state_get_pending_key_exchange_identity_key(const session_state *state) +{ + assert(state); + if(state->has_pending_key_exchange) { + return state->pending_key_exchange.local_identity_key; + } + else { + return 0; + } +} + +int session_state_has_pending_key_exchange(const session_state *state) +{ + assert(state); + return state->has_pending_key_exchange; +} + +void session_state_set_unacknowledged_pre_key_message(session_state *state, + const uint32_t *pre_key_id, uint32_t signed_pre_key_id, ec_public_key *base_key) +{ + assert(state); + assert(base_key); + + if(state->pending_pre_key.base_key) { + SIGNAL_UNREF(state->pending_pre_key.base_key); + state->pending_pre_key.base_key = 0; + } + + SIGNAL_REF(base_key); + + state->has_pending_pre_key = 1; + if(pre_key_id) { + state->pending_pre_key.has_pre_key_id = 1; + state->pending_pre_key.pre_key_id = *pre_key_id; + } + else { + state->pending_pre_key.has_pre_key_id = 0; + state->pending_pre_key.pre_key_id = 0; + } + state->pending_pre_key.signed_pre_key_id = signed_pre_key_id; + state->pending_pre_key.base_key = base_key; +} + +int session_state_unacknowledged_pre_key_message_has_pre_key_id(const session_state *state) +{ + assert(state); + return state->pending_pre_key.has_pre_key_id; +} + +uint32_t session_state_unacknowledged_pre_key_message_get_pre_key_id(const session_state *state) +{ + assert(state); + assert(state->pending_pre_key.has_pre_key_id); + return state->pending_pre_key.pre_key_id; +} + +uint32_t session_state_unacknowledged_pre_key_message_get_signed_pre_key_id(const session_state *state) +{ + assert(state); + return state->pending_pre_key.signed_pre_key_id; +} + +ec_public_key *session_state_unacknowledged_pre_key_message_get_base_key(const session_state *state) +{ + assert(state); + return state->pending_pre_key.base_key; +} + +int session_state_has_unacknowledged_pre_key_message(const session_state *state) +{ + assert(state); + return state->has_pending_pre_key; +} + +void session_state_clear_unacknowledged_pre_key_message(session_state *state) +{ + assert(state); + if(state->pending_pre_key.base_key) { + SIGNAL_UNREF(state->pending_pre_key.base_key); + } + memset(&state->pending_pre_key, 0, sizeof(state->pending_pre_key)); + state->has_pending_pre_key = 0; +} + +void session_state_set_remote_registration_id(session_state *state, uint32_t id) +{ + assert(state); + state->remote_registration_id = id; +} + +uint32_t session_state_get_remote_registration_id(const session_state *state) +{ + assert(state); + return state->remote_registration_id; +} + +void session_state_set_local_registration_id(session_state *state, uint32_t id) +{ + assert(state); + state->local_registration_id = id; +} + +uint32_t session_state_get_local_registration_id(const session_state *state) +{ + assert(state); + return state->local_registration_id; +} + +void session_state_set_needs_refresh(session_state *state, int value) +{ + assert(state); + assert(value == 0 || value == 1); + state->needs_refresh = value; +} + +int session_state_get_needs_refresh(const session_state *state) +{ + assert(state); + return state->needs_refresh; +} + +void session_state_set_alice_base_key(session_state *state, ec_public_key *key) +{ + assert(state); + assert(key); + + if(state->alice_base_key) { + SIGNAL_UNREF(state->alice_base_key); + } + SIGNAL_REF(key); + state->alice_base_key = key; +} + +ec_public_key *session_state_get_alice_base_key(const session_state *state) +{ + assert(state); + return state->alice_base_key; +} + +static void session_state_free_sender_chain(session_state *state) +{ + if(state->sender_chain.sender_ratchet_key_pair) { + SIGNAL_UNREF(state->sender_chain.sender_ratchet_key_pair); + state->sender_chain.sender_ratchet_key_pair = 0; + } + if(state->sender_chain.chain_key) { + SIGNAL_UNREF(state->sender_chain.chain_key); + state->sender_chain.chain_key = 0; + } +} + +static void session_state_free_receiver_chain_node(session_state_receiver_chain *node) +{ + if(node->sender_ratchet_key) { + SIGNAL_UNREF(node->sender_ratchet_key); + } + if(node->chain_key) { + SIGNAL_UNREF(node->chain_key); + } + + if(node->message_keys_head) { + message_keys_node *cur_node; + message_keys_node *tmp_node; + DL_FOREACH_SAFE(node->message_keys_head, cur_node, tmp_node) { + DL_DELETE(node->message_keys_head, cur_node); + signal_explicit_bzero(&cur_node->message_key, sizeof(ratchet_message_keys)); + free(cur_node); + } + node->message_keys_head = 0; + } + + free(node); +} + +static void session_state_free_receiver_chain(session_state *state) +{ + session_state_receiver_chain *cur_node; + session_state_receiver_chain *tmp_node; + DL_FOREACH_SAFE(state->receiver_chain_head, cur_node, tmp_node) { + DL_DELETE(state->receiver_chain_head, cur_node); + session_state_free_receiver_chain_node(cur_node); + } + state->receiver_chain_head = 0; +} + +void session_state_destroy(signal_type_base *type) +{ + session_state *state = (session_state *)type; + + if(state->local_identity_public) { + SIGNAL_UNREF(state->local_identity_public); + } + if(state->remote_identity_public) { + SIGNAL_UNREF(state->remote_identity_public); + } + if(state->root_key) { + SIGNAL_UNREF(state->root_key); + } + session_state_free_sender_chain(state); + session_state_free_receiver_chain(state); + if(state->has_pending_key_exchange) { + if(state->pending_key_exchange.local_base_key) { + SIGNAL_UNREF(state->pending_key_exchange.local_base_key); + } + if(state->pending_key_exchange.local_ratchet_key) { + SIGNAL_UNREF(state->pending_key_exchange.local_ratchet_key); + } + if(state->pending_key_exchange.local_identity_key) { + SIGNAL_UNREF(state->pending_key_exchange.local_identity_key); + } + } + if(state->has_pending_pre_key) { + if(state->pending_pre_key.base_key) { + SIGNAL_UNREF(state->pending_pre_key.base_key); + } + } + if(state->alice_base_key) { + SIGNAL_UNREF(state->alice_base_key); + } + free(state); +} diff --git a/Sources/libsignal/session_state.h b/Sources/libsignal/session_state.h new file mode 100755 index 0000000..ef1ecae --- /dev/null +++ b/Sources/libsignal/session_state.h @@ -0,0 +1,89 @@ +#ifndef SESSION_STATE_H +#define SESSION_STATE_H + +#include +#include +#include "signal_protocol_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/*------------------------------------------------------------------------*/ + +int session_state_create(session_state **state, signal_context *global_context); +int session_state_serialize(signal_buffer **buffer, session_state *state); +int session_state_deserialize(session_state **state, const uint8_t *data, size_t len, signal_context *global_context); +int session_state_copy(session_state **state, session_state *other_state, signal_context *global_context); + +void session_state_set_session_version(session_state *state, uint32_t version); +uint32_t session_state_get_session_version(const session_state *state); + +void session_state_set_local_identity_key(session_state *state, ec_public_key *identity_key); +ec_public_key *session_state_get_local_identity_key(const session_state *state); + +void session_state_set_remote_identity_key(session_state *state, ec_public_key *identity_key); +ec_public_key *session_state_get_remote_identity_key(const session_state *state); + +void session_state_set_root_key(session_state *state, ratchet_root_key *root_key); +ratchet_root_key *session_state_get_root_key(const session_state *state); + +void session_state_set_previous_counter(session_state *state, uint32_t counter); +uint32_t session_state_get_previous_counter(const session_state *state); + +void session_state_set_sender_chain(session_state *state, ec_key_pair *sender_ratchet_key_pair, ratchet_chain_key *chain_key); +ec_public_key *session_state_get_sender_ratchet_key(const session_state *state); +ec_key_pair *session_state_get_sender_ratchet_key_pair(const session_state *state); +ratchet_chain_key *session_state_get_sender_chain_key(const session_state *state); +int session_state_set_sender_chain_key(session_state *state, ratchet_chain_key *chain_key); +int session_state_has_sender_chain(const session_state *state); + +int session_state_has_message_keys(session_state *state, ec_public_key *sender_ephemeral, uint32_t counter); +int session_state_remove_message_keys(session_state *state, + ratchet_message_keys *message_keys_result, + ec_public_key *sender_ephemeral, uint32_t counter); +int session_state_set_message_keys(session_state *state, + ec_public_key *sender_ephemeral, ratchet_message_keys *message_keys); + +int session_state_add_receiver_chain(session_state *state, ec_public_key *sender_ratchet_key, ratchet_chain_key *chain_key); +int session_state_set_receiver_chain_key(session_state *state, ec_public_key *sender_ephemeral, ratchet_chain_key *chain_key); +ratchet_chain_key *session_state_get_receiver_chain_key(session_state *state, ec_public_key *sender_ephemeral); + +void session_state_set_pending_key_exchange(session_state *state, + uint32_t sequence, + ec_key_pair *our_base_key, ec_key_pair *our_ratchet_key, + ratchet_identity_key_pair *our_identity_key); +uint32_t session_state_get_pending_key_exchange_sequence(session_state *state); +ec_key_pair *session_state_get_pending_key_exchange_base_key(const session_state *state); +ec_key_pair *session_state_get_pending_key_exchange_ratchet_key(const session_state *state); +ratchet_identity_key_pair *session_state_get_pending_key_exchange_identity_key(const session_state *state); +int session_state_has_pending_key_exchange(const session_state *state); + +void session_state_set_unacknowledged_pre_key_message(session_state *state, + const uint32_t *pre_key_id, uint32_t signed_pre_key_id, ec_public_key *base_key); +int session_state_unacknowledged_pre_key_message_has_pre_key_id(const session_state *state); +uint32_t session_state_unacknowledged_pre_key_message_get_pre_key_id(const session_state *state); +uint32_t session_state_unacknowledged_pre_key_message_get_signed_pre_key_id(const session_state *state); +ec_public_key *session_state_unacknowledged_pre_key_message_get_base_key(const session_state *state); +int session_state_has_unacknowledged_pre_key_message(const session_state *state); +void session_state_clear_unacknowledged_pre_key_message(session_state *state); + +void session_state_set_remote_registration_id(session_state *state, uint32_t id); +uint32_t session_state_get_remote_registration_id(const session_state *state); + +void session_state_set_local_registration_id(session_state *state, uint32_t id); +uint32_t session_state_get_local_registration_id(const session_state *state); + +void session_state_set_needs_refresh(session_state *state, int value); +int session_state_get_needs_refresh(const session_state *state); + +void session_state_set_alice_base_key(session_state *state, ec_public_key *key); +ec_public_key *session_state_get_alice_base_key(const session_state *state); + +void session_state_destroy(signal_type_base *type); + +#ifdef __cplusplus +} +#endif + +#endif /* SESSION_STATE_H */ diff --git a/Sources/libsignal/signal_protocol.c b/Sources/libsignal/signal_protocol.c new file mode 100755 index 0000000..d9ea5b5 --- /dev/null +++ b/Sources/libsignal/signal_protocol.c @@ -0,0 +1,1230 @@ +#include "signal_protocol.h" + +#include +#include +#include +#include +#include +#include + +#include "signal_protocol_internal.h" +#include "signal_utarray.h" + +#ifdef _WINDOWS +#include "Windows.h" +#include "WinBase.h" +#endif + +#ifdef DEBUG_REFCOUNT +int type_ref_count = 0; +int type_unref_count = 0; +#endif + +#define MIN(a,b) (((a)<(b))?(a):(b)) + +struct signal_protocol_store_context { + signal_context *global_context; + signal_protocol_session_store session_store; + signal_protocol_pre_key_store pre_key_store; + signal_protocol_signed_pre_key_store signed_pre_key_store; + signal_protocol_identity_key_store identity_key_store; + signal_protocol_sender_key_store sender_key_store; +}; + +void signal_type_init(signal_type_base *instance, + void (*destroy_func)(signal_type_base *instance)) +{ + instance->ref_count = 1; + instance->destroy = destroy_func; +#ifdef DEBUG_REFCOUNT + type_ref_count++; +#endif +} + +void signal_type_ref(signal_type_base *instance) +{ +#ifdef DEBUG_REFCOUNT + type_ref_count++; +#endif + assert(instance); + assert(instance->ref_count > 0); + instance->ref_count++; +} + +void signal_type_unref(signal_type_base *instance) +{ + if(instance) { +#ifdef DEBUG_REFCOUNT + type_unref_count++; +#endif + assert(instance->ref_count > 0); + if(instance->ref_count > 1) { + instance->ref_count--; + } + else { + instance->destroy(instance); + } + } +} + +#ifdef DEBUG_REFCOUNT +int signal_type_ref_count(signal_type_base *instance) +{ + if(!instance) { + return 0; + } + return instance->ref_count; +} +#endif + +/*------------------------------------------------------------------------*/ + +signal_buffer *signal_buffer_alloc(size_t len) +{ + signal_buffer *buffer; + if(len > (SIZE_MAX - sizeof(struct signal_buffer)) / sizeof(uint8_t)) { + return 0; + } + + buffer = malloc(sizeof(struct signal_buffer) + (sizeof(uint8_t) * len)); + if(buffer) { + buffer->len = len; + } + return buffer; +} + +signal_buffer *signal_buffer_create(const uint8_t *data, size_t len) +{ + signal_buffer *buffer = signal_buffer_alloc(len); + if(!buffer) { + return 0; + } + + memcpy(buffer->data, data, len); + return buffer; +} + +signal_buffer *signal_buffer_copy(const signal_buffer *buffer) +{ + return signal_buffer_create(buffer->data, buffer->len); +} + +signal_buffer *signal_buffer_n_copy(const signal_buffer *buffer, size_t n) +{ + size_t len = MIN(buffer->len, n); + return signal_buffer_create(buffer->data, len); +} + +signal_buffer *signal_buffer_append(signal_buffer *buffer, const uint8_t *data, size_t len) +{ + signal_buffer *tmp_buffer; + size_t previous_size = buffer->len; + size_t previous_alloc = sizeof(struct signal_buffer) + (sizeof(uint8_t) * previous_size); + + if(len > (SIZE_MAX - previous_alloc)) { + return 0; + } + + tmp_buffer = realloc(buffer, previous_alloc + (sizeof(uint8_t) * len)); + if(!tmp_buffer) { + return 0; + } + + memcpy(tmp_buffer->data + previous_size, data, len); + tmp_buffer->len = previous_size + len; + return tmp_buffer; +} + +uint8_t *signal_buffer_data(signal_buffer *buffer) +{ + return buffer->data; +} + +const uint8_t *signal_buffer_const_data(const signal_buffer *buffer) +{ + return buffer->data; +} + +size_t signal_buffer_len(const signal_buffer *buffer) +{ + return buffer->len; +} + +int signal_buffer_compare(signal_buffer *buffer1, signal_buffer *buffer2) +{ + if(buffer1 == buffer2) { + return 0; + } + else if(buffer1 == 0 && buffer2 != 0) { + return -1; + } + else if(buffer1 != 0 && buffer2 == 0) { + return 1; + } + else { + if(buffer1->len < buffer2->len) { + return -1; + } + else if(buffer1->len > buffer2->len) { + return 1; + } + else { + return signal_constant_memcmp(buffer1->data, buffer2->data, buffer1->len); + } + } +} + +void signal_buffer_free(signal_buffer *buffer) +{ + if(buffer) { + free(buffer); + } +} + +void signal_buffer_bzero_free(signal_buffer *buffer) +{ + if(buffer) { + signal_explicit_bzero(buffer->data, buffer->len); + free(buffer); + } +} + +/*------------------------------------------------------------------------*/ + +struct signal_buffer_list +{ + UT_array *values; +}; + +signal_buffer_list *signal_buffer_list_alloc(void) +{ + int result = 0; + signal_buffer_list *list = malloc(sizeof(signal_buffer_list)); + if(!list) { + result = SG_ERR_NOMEM; + goto complete; + } + + memset(list, 0, sizeof(signal_buffer_list)); + + utarray_new(list->values, &ut_ptr_icd); + +complete: + if(result < 0) { + if(list) { + free(list); + } + return 0; + } + else { + return list; + } +} + +signal_buffer_list *signal_buffer_list_copy(const signal_buffer_list *list) +{ + int result = 0; + signal_buffer_list *result_list = 0; + signal_buffer *buffer_copy = 0; + unsigned int list_size; + unsigned int i; + + result_list = signal_buffer_list_alloc(); + if(!result_list) { + result = SG_ERR_NOMEM; + goto complete; + } + + list_size = utarray_len(list->values); + + utarray_reserve(result_list->values, list_size); + + for(i = 0; i < list_size; i++) { + signal_buffer **buffer = (signal_buffer**)utarray_eltptr(list->values, i); + buffer_copy = signal_buffer_copy(*buffer); + utarray_push_back(result_list->values, &buffer_copy); + buffer_copy = 0; + } + +complete: + if(result < 0) { + signal_buffer_free(buffer_copy); + signal_buffer_list_free(result_list); + return 0; + } + else { + return result_list; + } +} + +int signal_buffer_list_push_back(signal_buffer_list *list, signal_buffer *buffer) +{ + int result = 0; + assert(list); + utarray_push_back(list->values, &buffer); + +complete: + return result; +} + +unsigned int signal_buffer_list_size(signal_buffer_list *list) +{ + assert(list); + return utarray_len(list->values); +} + +signal_buffer *signal_buffer_list_at(signal_buffer_list *list, unsigned int index) +{ + signal_buffer **value = 0; + + assert(list); + assert(index < utarray_len(list->values)); + + value = (signal_buffer**)utarray_eltptr(list->values, index); + + assert(*value); + + return *value; +} + +void signal_buffer_list_free(signal_buffer_list *list) +{ + unsigned int size; + unsigned int i; + signal_buffer **p; + if(list) { + size = utarray_len(list->values); + for (i = 0; i < size; i++) { + p = (signal_buffer **)utarray_eltptr(list->values, i); + signal_buffer_free(*p); + } + utarray_free(list->values); + free(list); + } +} + +void signal_buffer_list_bzero_free(signal_buffer_list *list) +{ + unsigned int size; + unsigned int i; + signal_buffer **p; + if(list) { + size = utarray_len(list->values); + for (i = 0; i < size; i++) { + p = (signal_buffer **)utarray_eltptr(list->values, i); + signal_buffer_bzero_free(*p); + } + utarray_free(list->values); + free(list); + } +} + +/*------------------------------------------------------------------------*/ + +struct signal_int_list +{ + UT_array *values; +}; + +signal_int_list *signal_int_list_alloc() +{ + int result = 0; + signal_int_list *list = malloc(sizeof(signal_int_list)); + if(!list) { + result = SG_ERR_NOMEM; + goto complete; + } + + memset(list, 0, sizeof(signal_int_list)); + + utarray_new(list->values, &ut_int_icd); + +complete: + if(result < 0) { + if(list) { + free(list); + } + return 0; + } + else { + return list; + } +} + +int signal_int_list_push_back(signal_int_list *list, int value) +{ + int result = 0; + assert(list); + utarray_push_back(list->values, &value); + +complete: + return result; +} + +unsigned int signal_int_list_size(signal_int_list *list) +{ + assert(list); + return utarray_len(list->values); +} + +int signal_int_list_at(signal_int_list *list, unsigned int index) +{ + int *value = 0; + + assert(list); + assert(index < utarray_len(list->values)); + + value = (int *)utarray_eltptr(list->values, index); + + assert(value); + + return *value; +} + +void signal_int_list_free(signal_int_list *list) +{ + if(list) { + utarray_free(list->values); + free(list); + } +} + +/*------------------------------------------------------------------------*/ + +int signal_context_create(signal_context **context, void *user_data) +{ + *context = malloc(sizeof(signal_context)); + if(!(*context)) { + return SG_ERR_NOMEM; + } + memset(*context, 0, sizeof(signal_context)); + (*context)->user_data = user_data; +#ifdef DEBUG_REFCOUNT + type_ref_count = 0; + type_unref_count = 0; +#endif + return 0; +} + +int signal_context_set_crypto_provider(signal_context *context, const signal_crypto_provider *crypto_provider) +{ + assert(context); + if(!crypto_provider + || !crypto_provider->hmac_sha256_init_func + || !crypto_provider->hmac_sha256_update_func + || !crypto_provider->hmac_sha256_final_func + || !crypto_provider->hmac_sha256_cleanup_func) { + return SG_ERR_INVAL; + } + memcpy(&(context->crypto_provider), crypto_provider, sizeof(signal_crypto_provider)); + return 0; +} + +int signal_context_set_locking_functions(signal_context *context, + void (*lock)(void *user_data), void (*unlock)(void *user_data)) +{ + assert(context); + if((lock && !unlock) || (!lock && unlock)) { + return SG_ERR_INVAL; + } + + context->lock = lock; + context->unlock = unlock; + return 0; +} + +int signal_context_set_log_function(signal_context *context, + void (*log)(int level, const char *message, size_t len, void *user_data)) +{ + assert(context); + context->log = log; + return 0; +} + +void signal_context_destroy(signal_context *context) +{ +#ifdef DEBUG_REFCOUNT + fprintf(stderr, "Global REF count: %d\n", type_ref_count); + fprintf(stderr, "Global UNREF count: %d\n", type_unref_count); +#endif + if(context) { + free(context); + } +} + +/*------------------------------------------------------------------------*/ + +int signal_crypto_random(signal_context *context, uint8_t *data, size_t len) +{ + assert(context); + assert(context->crypto_provider.random_func); + return context->crypto_provider.random_func(data, len, context->crypto_provider.user_data); +} + +int signal_hmac_sha256_init(signal_context *context, void **hmac_context, const uint8_t *key, size_t key_len) +{ + assert(context); + assert(context->crypto_provider.hmac_sha256_init_func); + return context->crypto_provider.hmac_sha256_init_func(hmac_context, key, key_len, context->crypto_provider.user_data); +} + +int signal_hmac_sha256_update(signal_context *context, void *hmac_context, const uint8_t *data, size_t data_len) +{ + assert(context); + assert(context->crypto_provider.hmac_sha256_update_func); + return context->crypto_provider.hmac_sha256_update_func(hmac_context, data, data_len, context->crypto_provider.user_data); +} + +int signal_hmac_sha256_final(signal_context *context, void *hmac_context, signal_buffer **output) +{ + assert(context); + assert(context->crypto_provider.hmac_sha256_final_func); + return context->crypto_provider.hmac_sha256_final_func(hmac_context, output, context->crypto_provider.user_data); +} + +void signal_hmac_sha256_cleanup(signal_context *context, void *hmac_context) +{ + assert(context); + assert(context->crypto_provider.hmac_sha256_cleanup_func); + context->crypto_provider.hmac_sha256_cleanup_func(hmac_context, context->crypto_provider.user_data); +} + +int signal_sha512_digest_init(signal_context *context, void **digest_context) +{ + assert(context); + assert(context->crypto_provider.sha512_digest_init_func); + return context->crypto_provider.sha512_digest_init_func(digest_context, context->crypto_provider.user_data); +} + +int signal_sha512_digest_update(signal_context *context, void *digest_context, const uint8_t *data, size_t data_len) +{ + assert(context); + assert(context->crypto_provider.sha512_digest_update_func); + return context->crypto_provider.sha512_digest_update_func(digest_context, data, data_len, context->crypto_provider.user_data); +} + +int signal_sha512_digest_final(signal_context *context, void *digest_context, signal_buffer **output) +{ + assert(context); + assert(context->crypto_provider.sha512_digest_final_func); + return context->crypto_provider.sha512_digest_final_func(digest_context, output, context->crypto_provider.user_data); +} + +void signal_sha512_digest_cleanup(signal_context *context, void *digest_context) +{ + assert(context); + assert(context->crypto_provider.sha512_digest_cleanup_func); + return context->crypto_provider.sha512_digest_cleanup_func(digest_context, context->crypto_provider.user_data); +} + +int signal_encrypt(signal_context *context, + signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *plaintext, size_t plaintext_len) +{ + assert(context); + assert(context->crypto_provider.encrypt_func); + return context->crypto_provider.encrypt_func( + output, cipher, key, key_len, iv, iv_len, + plaintext, plaintext_len, + context->crypto_provider.user_data); +} + +int signal_decrypt(signal_context *context, + signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *ciphertext, size_t ciphertext_len) +{ + assert(context); + assert(context->crypto_provider.decrypt_func); + return context->crypto_provider.decrypt_func( + output, cipher, key, key_len, iv, iv_len, + ciphertext, ciphertext_len, + context->crypto_provider.user_data); +} + +void signal_lock(signal_context *context) +{ + if(context->lock) { + context->lock(context->user_data); + } +} + +void signal_unlock(signal_context *context) +{ + if(context->unlock) { + context->unlock(context->user_data); + } +} + +void signal_log(signal_context *context, int level, const char *format, ...) +{ + char buf[256]; + int n; + if(context && context->log) { + va_list args; + va_start(args, format); + n = vsnprintf(buf, sizeof(buf), format, args); + va_end(args); + if(n > 0) { + context->log(level, buf, strlen(buf), context->user_data); + } + } +} + +void signal_explicit_bzero(void *v, size_t n) +{ +#ifdef HAVE_SECUREZEROMEMORY + SecureZeroMemory(v, n); +#elif HAVE_MEMSET_S + memset_s(v, n, 0, n); +#else + volatile unsigned char *p = v; + while(n--) *p++ = 0; +#endif +} + +int signal_constant_memcmp(const void *s1, const void *s2, size_t n) +{ + size_t i; + const unsigned char *c1 = (const unsigned char *) s1; + const unsigned char *c2 = (const unsigned char *) s2; + unsigned char result = 0; + + for (i = 0; i < n; i++) { + result |= c1[i] ^ c2[i]; + } + + return result; +} + +void signal_protocol_str_serialize_protobuf(ProtobufCBinaryData *buffer, const char *str) +{ + assert(buffer); + assert(str); + buffer->data = (uint8_t *)str; + buffer->len = strlen(str); +} + +char *signal_protocol_str_deserialize_protobuf(ProtobufCBinaryData *buffer) +{ + char *str = 0; + assert(buffer); + + str = malloc(buffer->len + 1); + if(!str) { + return 0; + } + + memcpy(str, buffer->data, buffer->len); + str[buffer->len] = '\0'; + + return str; +} + +/*------------------------------------------------------------------------*/ + +int signal_protocol_store_context_create(signal_protocol_store_context **context, signal_context *global_context) +{ + assert(global_context); + *context = malloc(sizeof(signal_protocol_store_context)); + if(!(*context)) { + return SG_ERR_NOMEM; + } + memset(*context, 0, sizeof(signal_protocol_store_context)); + (*context)->global_context = global_context; + return 0; +} + +int signal_protocol_store_context_set_session_store(signal_protocol_store_context *context, const signal_protocol_session_store *store) +{ + if(!store) { + return SG_ERR_INVAL; + } + memcpy(&(context->session_store), store, sizeof(signal_protocol_session_store)); + return 0; +} + +int signal_protocol_store_context_set_pre_key_store(signal_protocol_store_context *context, const signal_protocol_pre_key_store *store) +{ + if(!store) { + return SG_ERR_INVAL; + } + memcpy(&(context->pre_key_store), store, sizeof(signal_protocol_pre_key_store)); + return 0; +} + +int signal_protocol_store_context_set_signed_pre_key_store(signal_protocol_store_context *context, const signal_protocol_signed_pre_key_store *store) +{ + if(!store) { + return SG_ERR_INVAL; + } + memcpy(&(context->signed_pre_key_store), store, sizeof(signal_protocol_signed_pre_key_store)); + return 0; +} + +int signal_protocol_store_context_set_identity_key_store(signal_protocol_store_context *context, const signal_protocol_identity_key_store *store) +{ + if(!store) { + return SG_ERR_INVAL; + } + memcpy(&(context->identity_key_store), store, sizeof(signal_protocol_identity_key_store)); + return 0; +} + +int signal_protocol_store_context_set_sender_key_store(signal_protocol_store_context *context, const signal_protocol_sender_key_store *store) +{ + if(!store) { + return SG_ERR_INVAL; + } + memcpy(&(context->sender_key_store), store, sizeof(signal_protocol_sender_key_store)); + return 0; +} + +void signal_protocol_store_context_destroy(signal_protocol_store_context *context) +{ + if(context) { + if(context->session_store.destroy_func) { + context->session_store.destroy_func(context->session_store.user_data); + } + if(context->pre_key_store.destroy_func) { + context->pre_key_store.destroy_func(context->pre_key_store.user_data); + } + if(context->signed_pre_key_store.destroy_func) { + context->signed_pre_key_store.destroy_func(context->signed_pre_key_store.user_data); + } + if(context->identity_key_store.destroy_func) { + context->identity_key_store.destroy_func(context->identity_key_store.user_data); + } + if(context->sender_key_store.destroy_func) { + context->sender_key_store.destroy_func(context->sender_key_store.user_data); + } + free(context); + } +} + +/*------------------------------------------------------------------------*/ + +int signal_protocol_session_load_session(signal_protocol_store_context *context, session_record **record, const signal_protocol_address *address) +{ + int result = 0; + signal_buffer *buffer = 0; + signal_buffer *user_buffer = 0; + session_record *result_record = 0; + + assert(context); + assert(context->session_store.load_session_func); + + result = context->session_store.load_session_func( + &buffer, &user_buffer, address, + context->session_store.user_data); + if(result < 0) { + goto complete; + } + + if(result == 0) { + if(buffer) { + result = SG_ERR_UNKNOWN; + goto complete; + } + result = session_record_create(&result_record, 0, context->global_context); + } + else if(result == 1) { + if(!buffer) { + result = -1; + goto complete; + } + result = session_record_deserialize(&result_record, + signal_buffer_data(buffer), signal_buffer_len(buffer), context->global_context); + } + else { + result = SG_ERR_UNKNOWN; + } + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + if(result >= 0) { + if(user_buffer) { + session_record_set_user_record(result_record, user_buffer); + } + *record = result_record; + } + else { + signal_buffer_free(user_buffer); + } + return result; +} + +int signal_protocol_session_get_sub_device_sessions(signal_protocol_store_context *context, signal_int_list **sessions, const char *name, size_t name_len) +{ + assert(context); + assert(context->session_store.get_sub_device_sessions_func); + + return context->session_store.get_sub_device_sessions_func( + sessions, name, name_len, + context->session_store.user_data); +} + +int signal_protocol_session_store_session(signal_protocol_store_context *context, const signal_protocol_address *address, session_record *record) +{ + int result = 0; + signal_buffer *buffer = 0; + signal_buffer *user_buffer = 0; + uint8_t *user_buffer_data = 0; + size_t user_buffer_len = 0; + + assert(context); + assert(context->session_store.store_session_func); + assert(record); + + result = session_record_serialize(&buffer, record); + if(result < 0) { + goto complete; + } + + user_buffer = session_record_get_user_record(record); + if(user_buffer) { + user_buffer_data = signal_buffer_data(user_buffer); + user_buffer_len = signal_buffer_len(user_buffer); + } + + result = context->session_store.store_session_func( + address, + signal_buffer_data(buffer), signal_buffer_len(buffer), + user_buffer_data, user_buffer_len, + context->session_store.user_data); + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + + return result; +} + +int signal_protocol_session_contains_session(signal_protocol_store_context *context, const signal_protocol_address *address) +{ + assert(context); + assert(context->session_store.contains_session_func); + + return context->session_store.contains_session_func( + address, + context->session_store.user_data); +} + +int signal_protocol_session_delete_session(signal_protocol_store_context *context, const signal_protocol_address *address) +{ + assert(context); + assert(context->session_store.delete_session_func); + + return context->session_store.delete_session_func( + address, + context->session_store.user_data); +} + +int signal_protocol_session_delete_all_sessions(signal_protocol_store_context *context, const char *name, size_t name_len) +{ + assert(context); + assert(context->session_store.delete_all_sessions_func); + + return context->session_store.delete_all_sessions_func( + name, name_len, + context->session_store.user_data); +} + +/*------------------------------------------------------------------------*/ + +int signal_protocol_pre_key_load_key(signal_protocol_store_context *context, session_pre_key **pre_key, uint32_t pre_key_id) +{ + int result = 0; + signal_buffer *buffer = 0; + session_pre_key *result_key = 0; + + assert(context); + assert(context->pre_key_store.load_pre_key); + + result = context->pre_key_store.load_pre_key( + &buffer, pre_key_id, + context->pre_key_store.user_data); + if(result < 0) { + goto complete; + } + + result = session_pre_key_deserialize(&result_key, + signal_buffer_data(buffer), signal_buffer_len(buffer), context->global_context); + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + if(result >= 0) { + *pre_key = result_key; + } + return result; +} + +int signal_protocol_pre_key_store_key(signal_protocol_store_context *context, session_pre_key *pre_key) +{ + int result = 0; + signal_buffer *buffer = 0; + uint32_t id = 0; + + assert(context); + assert(context->pre_key_store.store_pre_key); + assert(pre_key); + + id = session_pre_key_get_id(pre_key); + + result = session_pre_key_serialize(&buffer, pre_key); + if(result < 0) { + goto complete; + } + + result = context->pre_key_store.store_pre_key( + id, + signal_buffer_data(buffer), signal_buffer_len(buffer), + context->pre_key_store.user_data); + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + + return result; +} + +int signal_protocol_pre_key_contains_key(signal_protocol_store_context *context, uint32_t pre_key_id) +{ + int result = 0; + + assert(context); + assert(context->pre_key_store.contains_pre_key); + + result = context->pre_key_store.contains_pre_key( + pre_key_id, context->pre_key_store.user_data); + + return result; +} + +int signal_protocol_pre_key_remove_key(signal_protocol_store_context *context, uint32_t pre_key_id) +{ + int result = 0; + + assert(context); + assert(context->pre_key_store.remove_pre_key); + + result = context->pre_key_store.remove_pre_key( + pre_key_id, context->pre_key_store.user_data); + + return result; +} + +/*------------------------------------------------------------------------*/ + +int signal_protocol_signed_pre_key_load_key(signal_protocol_store_context *context, session_signed_pre_key **pre_key, uint32_t signed_pre_key_id) +{ + int result = 0; + signal_buffer *buffer = 0; + session_signed_pre_key *result_key = 0; + + assert(context); + assert(context->signed_pre_key_store.load_signed_pre_key); + + result = context->signed_pre_key_store.load_signed_pre_key( + &buffer, signed_pre_key_id, + context->signed_pre_key_store.user_data); + if(result < 0) { + goto complete; + } + + result = session_signed_pre_key_deserialize(&result_key, + signal_buffer_data(buffer), signal_buffer_len(buffer), context->global_context); + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + if(result >= 0) { + *pre_key = result_key; + } + return result; +} + +int signal_protocol_signed_pre_key_store_key(signal_protocol_store_context *context, session_signed_pre_key *pre_key) +{ + int result = 0; + signal_buffer *buffer = 0; + uint32_t id = 0; + + assert(context); + assert(context->signed_pre_key_store.store_signed_pre_key); + assert(pre_key); + + id = session_signed_pre_key_get_id(pre_key); + + result = session_signed_pre_key_serialize(&buffer, pre_key); + if(result < 0) { + goto complete; + } + + result = context->signed_pre_key_store.store_signed_pre_key( + id, + signal_buffer_data(buffer), signal_buffer_len(buffer), + context->signed_pre_key_store.user_data); + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + + return result; +} + +int signal_protocol_signed_pre_key_contains_key(signal_protocol_store_context *context, uint32_t signed_pre_key_id) +{ + int result = 0; + + assert(context); + assert(context->signed_pre_key_store.contains_signed_pre_key); + + result = context->signed_pre_key_store.contains_signed_pre_key( + signed_pre_key_id, context->signed_pre_key_store.user_data); + + return result; +} + +int signal_protocol_signed_pre_key_remove_key(signal_protocol_store_context *context, uint32_t signed_pre_key_id) +{ + int result = 0; + + assert(context); + assert(context->signed_pre_key_store.remove_signed_pre_key); + + result = context->signed_pre_key_store.remove_signed_pre_key( + signed_pre_key_id, context->signed_pre_key_store.user_data); + + return result; +} + +/*------------------------------------------------------------------------*/ + +int signal_protocol_identity_get_key_pair(signal_protocol_store_context *context, ratchet_identity_key_pair **key_pair) +{ + int result = 0; + signal_buffer *public_buf = 0; + signal_buffer *private_buf = 0; + ec_public_key *public_key = 0; + ec_private_key *private_key = 0; + ratchet_identity_key_pair *result_key = 0; + + assert(context); + assert(context->identity_key_store.get_identity_key_pair); + + result = context->identity_key_store.get_identity_key_pair( + &public_buf, &private_buf, + context->identity_key_store.user_data); + if(result < 0) { + goto complete; + } + + result = curve_decode_point(&public_key, public_buf->data, public_buf->len, context->global_context); + if(result < 0) { + goto complete; + } + + result = curve_decode_private_point(&private_key, private_buf->data, private_buf->len, context->global_context); + if(result < 0) { + goto complete; + } + + result = ratchet_identity_key_pair_create(&result_key, public_key, private_key); + if(result < 0) { + goto complete; + } + +complete: + if(public_buf) { + signal_buffer_free(public_buf); + } + if(private_buf) { + signal_buffer_free(private_buf); + } + if(public_key) { + SIGNAL_UNREF(public_key); + } + if(private_key) { + SIGNAL_UNREF(private_key); + } + if(result >= 0) { + *key_pair = result_key; + } + return result; +} + +int signal_protocol_identity_get_local_registration_id(signal_protocol_store_context *context, uint32_t *registration_id) +{ + int result = 0; + + assert(context); + assert(context->identity_key_store.get_local_registration_id); + + result = context->identity_key_store.get_local_registration_id( + context->identity_key_store.user_data, registration_id); + + return result; +} + +int signal_protocol_identity_save_identity(signal_protocol_store_context *context, const signal_protocol_address *address, ec_public_key *identity_key) +{ + int result = 0; + signal_buffer *buffer = 0; + + assert(context); + assert(context->identity_key_store.save_identity); + + if(identity_key) { + result = ec_public_key_serialize(&buffer, identity_key); + if(result < 0) { + goto complete; + } + + result = context->identity_key_store.save_identity( + address, + signal_buffer_data(buffer), + signal_buffer_len(buffer), + context->identity_key_store.user_data); + } + else { + result = context->identity_key_store.save_identity( + address, 0, 0, + context->identity_key_store.user_data); + } + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + + return result; +} + +int signal_protocol_identity_is_trusted_identity(signal_protocol_store_context *context, const signal_protocol_address *address, ec_public_key *identity_key) +{ + int result = 0; + signal_buffer *buffer = 0; + + assert(context); + assert(context->identity_key_store.is_trusted_identity); + + result = ec_public_key_serialize(&buffer, identity_key); + if(result < 0) { + goto complete; + } + + result = context->identity_key_store.is_trusted_identity( + address, + signal_buffer_data(buffer), + signal_buffer_len(buffer), + context->identity_key_store.user_data); +complete: + if(buffer) { + signal_buffer_free(buffer); + } + + return result; +} + +int signal_protocol_sender_key_store_key(signal_protocol_store_context *context, const signal_protocol_sender_key_name *sender_key_name, sender_key_record *record) +{ + int result = 0; + signal_buffer *buffer = 0; + signal_buffer *user_buffer = 0; + uint8_t *user_buffer_data = 0; + size_t user_buffer_len = 0; + + assert(context); + assert(context->sender_key_store.store_sender_key); + assert(record); + + result = sender_key_record_serialize(&buffer, record); + if(result < 0) { + goto complete; + } + + user_buffer = sender_key_record_get_user_record(record); + if(user_buffer) { + user_buffer_data = signal_buffer_data(user_buffer); + user_buffer_len = signal_buffer_len(user_buffer); + } + + result = context->sender_key_store.store_sender_key( + sender_key_name, + signal_buffer_data(buffer), signal_buffer_len(buffer), + user_buffer_data, user_buffer_len, + context->sender_key_store.user_data); + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + + return result; +} + +int signal_protocol_sender_key_load_key(signal_protocol_store_context *context, sender_key_record **record, const signal_protocol_sender_key_name *sender_key_name) +{ + int result = 0; + signal_buffer *buffer = 0; + signal_buffer *user_buffer = 0; + sender_key_record *result_record = 0; + + assert(context); + assert(context->sender_key_store.load_sender_key); + + result = context->sender_key_store.load_sender_key( + &buffer, &user_buffer, sender_key_name, + context->sender_key_store.user_data); + if(result < 0) { + goto complete; + } + + if(result == 0) { + if(buffer) { + result = SG_ERR_UNKNOWN; + goto complete; + } + result = sender_key_record_create(&result_record, context->global_context); + } + else if(result == 1) { + if(!buffer) { + result = -1; + goto complete; + } + result = sender_key_record_deserialize(&result_record, + signal_buffer_data(buffer), signal_buffer_len(buffer), context->global_context); + } + else { + result = SG_ERR_UNKNOWN; + } + +complete: + if(buffer) { + signal_buffer_free(buffer); + } + if(result >= 0) { + if(user_buffer) { + sender_key_record_set_user_record(result_record, user_buffer); + } + *record = result_record; + } + else { + signal_buffer_free(user_buffer); + } + return result; +} diff --git a/Sources/libsignal/signal_protocol_internal.h b/Sources/libsignal/signal_protocol_internal.h new file mode 100755 index 0000000..de89876 --- /dev/null +++ b/Sources/libsignal/signal_protocol_internal.h @@ -0,0 +1,87 @@ +#ifndef SIGNAL_PROTOCOL_INTERNAL_H +#define SIGNAL_PROTOCOL_INTERNAL_H + +#include "protobuf-c/protobuf-c.h" +#include "LocalStorageProtocol.pb-c.h" +#include "signal_protocol.h" + +struct signal_type_base { + unsigned int ref_count; + void (*destroy)(signal_type_base *instance); +}; + +void signal_type_init(signal_type_base *instance, + void (*destroy_func)(signal_type_base *instance)); + +#define SIGNAL_INIT(instance, destroy_func) signal_type_init((signal_type_base *)instance, destroy_func) + +struct signal_buffer { + size_t len; + uint8_t data[]; +}; + +struct signal_context { + signal_crypto_provider crypto_provider; + void (*lock)(void *user_data); + void (*unlock)(void *user_data); + void (*log)(int level, const char *message, size_t len, void *user_data); + void *user_data; +}; + +int signal_crypto_random(signal_context *context, uint8_t *data, size_t len); + +int signal_hmac_sha256_init(signal_context *context, void **hmac_context, const uint8_t *key, size_t key_len); +int signal_hmac_sha256_update(signal_context *context, void *hmac_context, const uint8_t *data, size_t data_len); +int signal_hmac_sha256_final(signal_context *context, void *hmac_context, signal_buffer **output); +void signal_hmac_sha256_cleanup(signal_context *context, void *hmac_context); + +int signal_sha512_digest_init(signal_context *context, void **digest_context); +int signal_sha512_digest_update(signal_context *context, void *digest_context, const uint8_t *data, size_t data_len); +int signal_sha512_digest_final(signal_context *context, void *digest_context, signal_buffer **output); +void signal_sha512_digest_cleanup(signal_context *context, void *digest_context); + + +int signal_encrypt(signal_context *context, + signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *plaintext, size_t plaintext_len); + +int signal_decrypt(signal_context *context, + signal_buffer **output, + int cipher, + const uint8_t *key, size_t key_len, + const uint8_t *iv, size_t iv_len, + const uint8_t *ciphertext, size_t ciphertext_len); + +void signal_lock(signal_context *context); +void signal_unlock(signal_context *context); +void signal_log(signal_context *context, int level, const char *format, ...); +void signal_explicit_bzero(void *v, size_t n); +int signal_constant_memcmp(const void *s1, const void *s2, size_t n); + +/*------------------------------------------------------------------------*/ + +/* + * Functions used for internal protocol buffers serialization support. + */ + +int ec_public_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_public_key *key); +int ec_private_key_serialize_protobuf(ProtobufCBinaryData *buffer, const ec_private_key *key); + +int ratchet_chain_key_get_key_protobuf(const ratchet_chain_key *chain_key, ProtobufCBinaryData *buffer); +int ratchet_root_key_get_key_protobuf(const ratchet_root_key *root_key, ProtobufCBinaryData *buffer); + +int session_state_serialize_prepare(session_state *state, Textsecure__SessionStructure *session_structure); +void session_state_serialize_prepare_free(Textsecure__SessionStructure *session_structure); +int session_state_deserialize_protobuf(session_state **state, Textsecure__SessionStructure *session_structure, signal_context *global_context); + +int sender_key_state_serialize_prepare(sender_key_state *state, Textsecure__SenderKeyStateStructure *state_structure); +void sender_key_state_serialize_prepare_free(Textsecure__SenderKeyStateStructure *state_structure); +int sender_key_state_deserialize_protobuf(sender_key_state **state, Textsecure__SenderKeyStateStructure *state_structure, signal_context *global_context); + +void signal_protocol_str_serialize_protobuf(ProtobufCBinaryData *buffer, const char *str); +char *signal_protocol_str_deserialize_protobuf(ProtobufCBinaryData *buffer); + +#endif /* SIGNAL_PROTOCOL_INTERNAL_H */ diff --git a/Sources/libsignal/signal_utarray.h b/Sources/libsignal/signal_utarray.h new file mode 100755 index 0000000..682fc0f --- /dev/null +++ b/Sources/libsignal/signal_utarray.h @@ -0,0 +1,13 @@ +#ifndef SIGNAL_UTARRAY_H +#define SIGNAL_UTARRAY_H + +#include "signal_protocol.h" + +#define oom() do { \ + result = SG_ERR_NOMEM; \ + goto complete; \ +} while(0) + +#include "utarray.h" + +#endif /* SIGNAL_UTARRAY_H */ diff --git a/Sources/libsignal/utarray.h b/Sources/libsignal/utarray.h new file mode 100755 index 0000000..979e99e --- /dev/null +++ b/Sources/libsignal/utarray.h @@ -0,0 +1,238 @@ +/* +Copyright (c) 2008-2016, Troy D. Hanson http://troydhanson.github.com/uthash/ +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER +OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +/* a dynamic array implementation using macros + */ +#ifndef UTARRAY_H +#define UTARRAY_H + +#define UTARRAY_VERSION 2.0.1 + +#ifdef __GNUC__ +#define _UNUSED_ __attribute__ ((__unused__)) +#else +#define _UNUSED_ +#endif + +#include /* size_t */ +#include /* memset, etc */ +#include /* exit */ + +#ifndef oom +#define oom() exit(-1) +#endif + +typedef void (ctor_f)(void *dst, const void *src); +typedef void (dtor_f)(void *elt); +typedef void (init_f)(void *elt); +typedef struct { + size_t sz; + init_f *init; + ctor_f *copy; + dtor_f *dtor; +} UT_icd; + +typedef struct { + unsigned i,n;/* i: index of next available slot, n: num slots */ + UT_icd icd; /* initializer, copy and destructor functions */ + char *d; /* n slots of size icd->sz*/ +} UT_array; + +#define utarray_init(a,_icd) do { \ + memset(a,0,sizeof(UT_array)); \ + (a)->icd = *(_icd); \ +} while(0) + +#define utarray_done(a) do { \ + if ((a)->n) { \ + if ((a)->icd.dtor) { \ + unsigned _ut_i; \ + for(_ut_i=0; _ut_i < (a)->i; _ut_i++) { \ + (a)->icd.dtor(utarray_eltptr(a,_ut_i)); \ + } \ + } \ + free((a)->d); \ + } \ + (a)->n=0; \ +} while(0) + +#define utarray_new(a,_icd) do { \ + (a) = (UT_array*)malloc(sizeof(UT_array)); \ + if ((a) == NULL) oom(); \ + utarray_init(a,_icd); \ +} while(0) + +#define utarray_free(a) do { \ + utarray_done(a); \ + free(a); \ +} while(0) + +#define utarray_reserve(a,by) do { \ + if (((a)->i+(by)) > (a)->n) { \ + char *utarray_tmp; \ + while (((a)->i+(by)) > (a)->n) { (a)->n = ((a)->n ? (2*(a)->n) : 8); } \ + utarray_tmp=(char*)realloc((a)->d, (a)->n*(a)->icd.sz); \ + if (utarray_tmp == NULL) oom(); \ + (a)->d=utarray_tmp; \ + } \ +} while(0) + +#define utarray_push_back(a,p) do { \ + utarray_reserve(a,1); \ + if ((a)->icd.copy) { (a)->icd.copy( _utarray_eltptr(a,(a)->i++), p); } \ + else { memcpy(_utarray_eltptr(a,(a)->i++), p, (a)->icd.sz); }; \ +} while(0) + +#define utarray_pop_back(a) do { \ + if ((a)->icd.dtor) { (a)->icd.dtor( _utarray_eltptr(a,--((a)->i))); } \ + else { (a)->i--; } \ +} while(0) + +#define utarray_extend_back(a) do { \ + utarray_reserve(a,1); \ + if ((a)->icd.init) { (a)->icd.init(_utarray_eltptr(a,(a)->i)); } \ + else { memset(_utarray_eltptr(a,(a)->i),0,(a)->icd.sz); } \ + (a)->i++; \ +} while(0) + +#define utarray_len(a) ((a)->i) + +#define utarray_eltptr(a,j) (((j) < (a)->i) ? _utarray_eltptr(a,j) : NULL) +#define _utarray_eltptr(a,j) ((a)->d + ((a)->icd.sz * (j))) + +#define utarray_insert(a,p,j) do { \ + if ((j) > (a)->i) utarray_resize(a,j); \ + utarray_reserve(a,1); \ + if ((j) < (a)->i) { \ + memmove( _utarray_eltptr(a,(j)+1), _utarray_eltptr(a,j), \ + ((a)->i - (j))*((a)->icd.sz)); \ + } \ + if ((a)->icd.copy) { (a)->icd.copy( _utarray_eltptr(a,j), p); } \ + else { memcpy(_utarray_eltptr(a,j), p, (a)->icd.sz); }; \ + (a)->i++; \ +} while(0) + +#define utarray_inserta(a,w,j) do { \ + if (utarray_len(w) == 0) break; \ + if ((j) > (a)->i) utarray_resize(a,j); \ + utarray_reserve(a,utarray_len(w)); \ + if ((j) < (a)->i) { \ + memmove(_utarray_eltptr(a,(j)+utarray_len(w)), \ + _utarray_eltptr(a,j), \ + ((a)->i - (j))*((a)->icd.sz)); \ + } \ + if ((a)->icd.copy) { \ + unsigned _ut_i; \ + for(_ut_i=0;_ut_i<(w)->i;_ut_i++) { \ + (a)->icd.copy(_utarray_eltptr(a, (j) + _ut_i), _utarray_eltptr(w, _ut_i)); \ + } \ + } else { \ + memcpy(_utarray_eltptr(a,j), _utarray_eltptr(w,0), \ + utarray_len(w)*((a)->icd.sz)); \ + } \ + (a)->i += utarray_len(w); \ +} while(0) + +#define utarray_resize(dst,num) do { \ + unsigned _ut_i; \ + if ((dst)->i > (unsigned)(num)) { \ + if ((dst)->icd.dtor) { \ + for (_ut_i = (num); _ut_i < (dst)->i; ++_ut_i) { \ + (dst)->icd.dtor(_utarray_eltptr(dst, _ut_i)); \ + } \ + } \ + } else if ((dst)->i < (unsigned)(num)) { \ + utarray_reserve(dst, (num) - (dst)->i); \ + if ((dst)->icd.init) { \ + for (_ut_i = (dst)->i; _ut_i < (unsigned)(num); ++_ut_i) { \ + (dst)->icd.init(_utarray_eltptr(dst, _ut_i)); \ + } \ + } else { \ + memset(_utarray_eltptr(dst, (dst)->i), 0, (dst)->icd.sz*((num) - (dst)->i)); \ + } \ + } \ + (dst)->i = (num); \ +} while(0) + +#define utarray_concat(dst,src) do { \ + utarray_inserta(dst, src, utarray_len(dst)); \ +} while(0) + +#define utarray_erase(a,pos,len) do { \ + if ((a)->icd.dtor) { \ + unsigned _ut_i; \ + for (_ut_i = 0; _ut_i < (len); _ut_i++) { \ + (a)->icd.dtor(utarray_eltptr(a, (pos) + _ut_i)); \ + } \ + } \ + if ((a)->i > ((pos) + (len))) { \ + memmove(_utarray_eltptr(a, pos), _utarray_eltptr(a, (pos) + (len)), \ + ((a)->i - ((pos) + (len))) * (a)->icd.sz); \ + } \ + (a)->i -= (len); \ +} while(0) + +#define utarray_renew(a,u) do { \ + if (a) utarray_clear(a); \ + else utarray_new(a, u); \ +} while(0) + +#define utarray_clear(a) do { \ + if ((a)->i > 0) { \ + if ((a)->icd.dtor) { \ + unsigned _ut_i; \ + for(_ut_i=0; _ut_i < (a)->i; _ut_i++) { \ + (a)->icd.dtor(_utarray_eltptr(a, _ut_i)); \ + } \ + } \ + (a)->i = 0; \ + } \ +} while(0) + +#define utarray_sort(a,cmp) do { \ + qsort((a)->d, (a)->i, (a)->icd.sz, cmp); \ +} while(0) + +#define utarray_find(a,v,cmp) bsearch((v),(a)->d,(a)->i,(a)->icd.sz,cmp) + +#define utarray_front(a) (((a)->i) ? (_utarray_eltptr(a,0)) : NULL) +#define utarray_next(a,e) (((e)==NULL) ? utarray_front(a) : ((((a)->i) > (utarray_eltidx(a,e)+1)) ? _utarray_eltptr(a,utarray_eltidx(a,e)+1) : NULL)) +#define utarray_prev(a,e) (((e)==NULL) ? utarray_back(a) : ((utarray_eltidx(a,e) > 0) ? _utarray_eltptr(a,utarray_eltidx(a,e)-1) : NULL)) +#define utarray_back(a) (((a)->i) ? (_utarray_eltptr(a,(a)->i-1)) : NULL) +#define utarray_eltidx(a,e) (((char*)(e) >= (a)->d) ? (((char*)(e) - (a)->d)/(a)->icd.sz) : -1) + +/* last we pre-define a few icd for common utarrays of ints and strings */ +static void utarray_str_cpy(void *dst, const void *src) { + char **_src = (char**)src, **_dst = (char**)dst; + *_dst = (*_src == NULL) ? NULL : strdup(*_src); +} +static void utarray_str_dtor(void *elt) { + char **eltc = (char**)elt; + if (*eltc != NULL) free(*eltc); +} +static const UT_icd ut_str_icd _UNUSED_ = {sizeof(char*),NULL,utarray_str_cpy,utarray_str_dtor}; +static const UT_icd ut_int_icd _UNUSED_ = {sizeof(int),NULL,NULL,NULL}; +static const UT_icd ut_ptr_icd _UNUSED_ = {sizeof(void*),NULL,NULL,NULL}; + + +#endif /* UTARRAY_H */ diff --git a/Sources/libsignal/uthash.h b/Sources/libsignal/uthash.h new file mode 100755 index 0000000..775599c --- /dev/null +++ b/Sources/libsignal/uthash.h @@ -0,0 +1,1074 @@ +/* +Copyright (c) 2003-2016, Troy D. Hanson http://troydhanson.github.com/uthash/ +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER +OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#ifndef UTHASH_H +#define UTHASH_H + +#define UTHASH_VERSION 2.0.1 + +#include /* memcmp,strlen */ +#include /* ptrdiff_t */ +#include /* exit() */ + +/* These macros use decltype or the earlier __typeof GNU extension. + As decltype is only available in newer compilers (VS2010 or gcc 4.3+ + when compiling c++ source) this code uses whatever method is needed + or, for VS2008 where neither is available, uses casting workarounds. */ +#if defined(_MSC_VER) /* MS compiler */ +#if _MSC_VER >= 1600 && defined(__cplusplus) /* VS2010 or newer in C++ mode */ +#define DECLTYPE(x) (decltype(x)) +#else /* VS2008 or older (or VS2010 in C mode) */ +#define NO_DECLTYPE +#define DECLTYPE(x) +#endif +#elif defined(__BORLANDC__) || defined(__LCC__) || defined(__WATCOMC__) +#define NO_DECLTYPE +#define DECLTYPE(x) +#else /* GNU, Sun and other compilers */ +#define DECLTYPE(x) (__typeof(x)) +#endif + +#ifdef NO_DECLTYPE +#define DECLTYPE_ASSIGN(dst,src) \ +do { \ + char **_da_dst = (char**)(&(dst)); \ + *_da_dst = (char*)(src); \ +} while (0) +#else +#define DECLTYPE_ASSIGN(dst,src) \ +do { \ + (dst) = DECLTYPE(dst)(src); \ +} while (0) +#endif + +/* a number of the hash function use uint32_t which isn't defined on Pre VS2010 */ +#if defined(_WIN32) +#if defined(_MSC_VER) && _MSC_VER >= 1600 +#include +#elif defined(__WATCOMC__) || defined(__MINGW32__) || defined(__CYGWIN__) +#include +#else +typedef unsigned int uint32_t; +typedef unsigned char uint8_t; +#endif +#elif defined(__GNUC__) && !defined(__VXWORKS__) +#include +#else +typedef unsigned int uint32_t; +typedef unsigned char uint8_t; +#endif + +#ifndef uthash_fatal +#define uthash_fatal(msg) exit(-1) /* fatal error (out of memory,etc) */ +#endif +#ifndef uthash_malloc +#define uthash_malloc(sz) malloc(sz) /* malloc fcn */ +#endif +#ifndef uthash_free +#define uthash_free(ptr,sz) free(ptr) /* free fcn */ +#endif +#ifndef uthash_strlen +#define uthash_strlen(s) strlen(s) +#endif +#ifndef uthash_memcmp +#define uthash_memcmp(a,b,n) memcmp(a,b,n) +#endif + +#ifndef uthash_noexpand_fyi +#define uthash_noexpand_fyi(tbl) /* can be defined to log noexpand */ +#endif +#ifndef uthash_expand_fyi +#define uthash_expand_fyi(tbl) /* can be defined to log expands */ +#endif + +/* initial number of buckets */ +#define HASH_INITIAL_NUM_BUCKETS 32U /* initial number of buckets */ +#define HASH_INITIAL_NUM_BUCKETS_LOG2 5U /* lg2 of initial number of buckets */ +#define HASH_BKT_CAPACITY_THRESH 10U /* expand when bucket count reaches */ + +/* calculate the element whose hash handle address is hhp */ +#define ELMT_FROM_HH(tbl,hhp) ((void*)(((char*)(hhp)) - ((tbl)->hho))) +/* calculate the hash handle from element address elp */ +#define HH_FROM_ELMT(tbl,elp) ((UT_hash_handle *)(((char*)(elp)) + ((tbl)->hho))) + +#define HASH_VALUE(keyptr,keylen,hashv) \ +do { \ + HASH_FCN(keyptr, keylen, hashv); \ +} while (0) + +#define HASH_FIND_BYHASHVALUE(hh,head,keyptr,keylen,hashval,out) \ +do { \ + (out) = NULL; \ + if (head) { \ + unsigned _hf_bkt; \ + HASH_TO_BKT(hashval, (head)->hh.tbl->num_buckets, _hf_bkt); \ + if (HASH_BLOOM_TEST((head)->hh.tbl, hashval) != 0) { \ + HASH_FIND_IN_BKT((head)->hh.tbl, hh, (head)->hh.tbl->buckets[ _hf_bkt ], keyptr, keylen, hashval, out); \ + } \ + } \ +} while (0) + +#define HASH_FIND(hh,head,keyptr,keylen,out) \ +do { \ + unsigned _hf_hashv; \ + HASH_VALUE(keyptr, keylen, _hf_hashv); \ + HASH_FIND_BYHASHVALUE(hh, head, keyptr, keylen, _hf_hashv, out); \ +} while (0) + +#ifdef HASH_BLOOM +#define HASH_BLOOM_BITLEN (1UL << HASH_BLOOM) +#define HASH_BLOOM_BYTELEN (HASH_BLOOM_BITLEN/8UL) + (((HASH_BLOOM_BITLEN%8UL)!=0UL) ? 1UL : 0UL) +#define HASH_BLOOM_MAKE(tbl) \ +do { \ + (tbl)->bloom_nbits = HASH_BLOOM; \ + (tbl)->bloom_bv = (uint8_t*)uthash_malloc(HASH_BLOOM_BYTELEN); \ + if (!((tbl)->bloom_bv)) { uthash_fatal( "out of memory"); } \ + memset((tbl)->bloom_bv, 0, HASH_BLOOM_BYTELEN); \ + (tbl)->bloom_sig = HASH_BLOOM_SIGNATURE; \ +} while (0) + +#define HASH_BLOOM_FREE(tbl) \ +do { \ + uthash_free((tbl)->bloom_bv, HASH_BLOOM_BYTELEN); \ +} while (0) + +#define HASH_BLOOM_BITSET(bv,idx) (bv[(idx)/8U] |= (1U << ((idx)%8U))) +#define HASH_BLOOM_BITTEST(bv,idx) (bv[(idx)/8U] & (1U << ((idx)%8U))) + +#define HASH_BLOOM_ADD(tbl,hashv) \ + HASH_BLOOM_BITSET((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1U))) + +#define HASH_BLOOM_TEST(tbl,hashv) \ + HASH_BLOOM_BITTEST((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1U))) + +#else +#define HASH_BLOOM_MAKE(tbl) +#define HASH_BLOOM_FREE(tbl) +#define HASH_BLOOM_ADD(tbl,hashv) +#define HASH_BLOOM_TEST(tbl,hashv) (1) +#define HASH_BLOOM_BYTELEN 0U +#endif + +#define HASH_MAKE_TABLE(hh,head) \ +do { \ + (head)->hh.tbl = (UT_hash_table*)uthash_malloc( \ + sizeof(UT_hash_table)); \ + if (!((head)->hh.tbl)) { uthash_fatal( "out of memory"); } \ + memset((head)->hh.tbl, 0, sizeof(UT_hash_table)); \ + (head)->hh.tbl->tail = &((head)->hh); \ + (head)->hh.tbl->num_buckets = HASH_INITIAL_NUM_BUCKETS; \ + (head)->hh.tbl->log2_num_buckets = HASH_INITIAL_NUM_BUCKETS_LOG2; \ + (head)->hh.tbl->hho = (char*)(&(head)->hh) - (char*)(head); \ + (head)->hh.tbl->buckets = (UT_hash_bucket*)uthash_malloc( \ + HASH_INITIAL_NUM_BUCKETS*sizeof(struct UT_hash_bucket)); \ + if (! (head)->hh.tbl->buckets) { uthash_fatal( "out of memory"); } \ + memset((head)->hh.tbl->buckets, 0, \ + HASH_INITIAL_NUM_BUCKETS*sizeof(struct UT_hash_bucket)); \ + HASH_BLOOM_MAKE((head)->hh.tbl); \ + (head)->hh.tbl->signature = HASH_SIGNATURE; \ +} while (0) + +#define HASH_REPLACE_BYHASHVALUE_INORDER(hh,head,fieldname,keylen_in,hashval,add,replaced,cmpfcn) \ +do { \ + (replaced) = NULL; \ + HASH_FIND_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, replaced); \ + if (replaced) { \ + HASH_DELETE(hh, head, replaced); \ + } \ + HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, &((add)->fieldname), keylen_in, hashval, add, cmpfcn); \ +} while (0) + +#define HASH_REPLACE_BYHASHVALUE(hh,head,fieldname,keylen_in,hashval,add,replaced) \ +do { \ + (replaced) = NULL; \ + HASH_FIND_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, replaced); \ + if (replaced) { \ + HASH_DELETE(hh, head, replaced); \ + } \ + HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, add); \ +} while (0) + +#define HASH_REPLACE(hh,head,fieldname,keylen_in,add,replaced) \ +do { \ + unsigned _hr_hashv; \ + HASH_VALUE(&((add)->fieldname), keylen_in, _hr_hashv); \ + HASH_REPLACE_BYHASHVALUE(hh, head, fieldname, keylen_in, _hr_hashv, add, replaced); \ +} while (0) + +#define HASH_REPLACE_INORDER(hh,head,fieldname,keylen_in,add,replaced,cmpfcn) \ +do { \ + unsigned _hr_hashv; \ + HASH_VALUE(&((add)->fieldname), keylen_in, _hr_hashv); \ + HASH_REPLACE_BYHASHVALUE_INORDER(hh, head, fieldname, keylen_in, _hr_hashv, add, replaced, cmpfcn); \ +} while (0) + +#define HASH_APPEND_LIST(hh, head, add) \ +do { \ + (add)->hh.next = NULL; \ + (add)->hh.prev = ELMT_FROM_HH((head)->hh.tbl, (head)->hh.tbl->tail); \ + (head)->hh.tbl->tail->next = (add); \ + (head)->hh.tbl->tail = &((add)->hh); \ +} while (0) + +#define HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh,head,keyptr,keylen_in,hashval,add,cmpfcn) \ +do { \ + unsigned _ha_bkt; \ + (add)->hh.hashv = (hashval); \ + (add)->hh.key = (char*) (keyptr); \ + (add)->hh.keylen = (unsigned) (keylen_in); \ + if (!(head)) { \ + (add)->hh.next = NULL; \ + (add)->hh.prev = NULL; \ + (head) = (add); \ + HASH_MAKE_TABLE(hh, head); \ + } else { \ + void *_hs_iter = (head); \ + (add)->hh.tbl = (head)->hh.tbl; \ + do { \ + if (cmpfcn(DECLTYPE(head)(_hs_iter), add) > 0) \ + break; \ + } while ((_hs_iter = HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->next)); \ + if (_hs_iter) { \ + (add)->hh.next = _hs_iter; \ + if (((add)->hh.prev = HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->prev)) { \ + HH_FROM_ELMT((head)->hh.tbl, (add)->hh.prev)->next = (add); \ + } else { \ + (head) = (add); \ + } \ + HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->prev = (add); \ + } else { \ + HASH_APPEND_LIST(hh, head, add); \ + } \ + } \ + (head)->hh.tbl->num_items++; \ + HASH_TO_BKT(hashval, (head)->hh.tbl->num_buckets, _ha_bkt); \ + HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt], &(add)->hh); \ + HASH_BLOOM_ADD((head)->hh.tbl, hashval); \ + HASH_EMIT_KEY(hh, head, keyptr, keylen_in); \ + HASH_FSCK(hh, head); \ +} while (0) + +#define HASH_ADD_KEYPTR_INORDER(hh,head,keyptr,keylen_in,add,cmpfcn) \ +do { \ + unsigned _hs_hashv; \ + HASH_VALUE(keyptr, keylen_in, _hs_hashv); \ + HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, keyptr, keylen_in, _hs_hashv, add, cmpfcn); \ +} while (0) + +#define HASH_ADD_BYHASHVALUE_INORDER(hh,head,fieldname,keylen_in,hashval,add,cmpfcn) \ + HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, &((add)->fieldname), keylen_in, hashval, add, cmpfcn) + +#define HASH_ADD_INORDER(hh,head,fieldname,keylen_in,add,cmpfcn) \ + HASH_ADD_KEYPTR_INORDER(hh, head, &((add)->fieldname), keylen_in, add, cmpfcn) + +#define HASH_ADD_KEYPTR_BYHASHVALUE(hh,head,keyptr,keylen_in,hashval,add) \ +do { \ + unsigned _ha_bkt; \ + (add)->hh.hashv = (hashval); \ + (add)->hh.key = (char*) (keyptr); \ + (add)->hh.keylen = (unsigned) (keylen_in); \ + if (!(head)) { \ + (add)->hh.next = NULL; \ + (add)->hh.prev = NULL; \ + (head) = (add); \ + HASH_MAKE_TABLE(hh, head); \ + } else { \ + (add)->hh.tbl = (head)->hh.tbl; \ + HASH_APPEND_LIST(hh, head, add); \ + } \ + (head)->hh.tbl->num_items++; \ + HASH_TO_BKT(hashval, (head)->hh.tbl->num_buckets, _ha_bkt); \ + HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt], &(add)->hh); \ + HASH_BLOOM_ADD((head)->hh.tbl, hashval); \ + HASH_EMIT_KEY(hh, head, keyptr, keylen_in); \ + HASH_FSCK(hh, head); \ +} while (0) + +#define HASH_ADD_KEYPTR(hh,head,keyptr,keylen_in,add) \ +do { \ + unsigned _ha_hashv; \ + HASH_VALUE(keyptr, keylen_in, _ha_hashv); \ + HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, keyptr, keylen_in, _ha_hashv, add); \ +} while (0) + +#define HASH_ADD_BYHASHVALUE(hh,head,fieldname,keylen_in,hashval,add) \ + HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, add) + +#define HASH_ADD(hh,head,fieldname,keylen_in,add) \ + HASH_ADD_KEYPTR(hh, head, &((add)->fieldname), keylen_in, add) + +#define HASH_TO_BKT(hashv,num_bkts,bkt) \ +do { \ + bkt = ((hashv) & ((num_bkts) - 1U)); \ +} while (0) + +/* delete "delptr" from the hash table. + * "the usual" patch-up process for the app-order doubly-linked-list. + * The use of _hd_hh_del below deserves special explanation. + * These used to be expressed using (delptr) but that led to a bug + * if someone used the same symbol for the head and deletee, like + * HASH_DELETE(hh,users,users); + * We want that to work, but by changing the head (users) below + * we were forfeiting our ability to further refer to the deletee (users) + * in the patch-up process. Solution: use scratch space to + * copy the deletee pointer, then the latter references are via that + * scratch pointer rather than through the repointed (users) symbol. + */ +#define HASH_DELETE(hh,head,delptr) \ +do { \ + struct UT_hash_handle *_hd_hh_del; \ + if ( ((delptr)->hh.prev == NULL) && ((delptr)->hh.next == NULL) ) { \ + uthash_free((head)->hh.tbl->buckets, \ + (head)->hh.tbl->num_buckets*sizeof(struct UT_hash_bucket) ); \ + HASH_BLOOM_FREE((head)->hh.tbl); \ + uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \ + head = NULL; \ + } else { \ + unsigned _hd_bkt; \ + _hd_hh_del = &((delptr)->hh); \ + if ((delptr) == ELMT_FROM_HH((head)->hh.tbl,(head)->hh.tbl->tail)) { \ + (head)->hh.tbl->tail = \ + (UT_hash_handle*)((ptrdiff_t)((delptr)->hh.prev) + \ + (head)->hh.tbl->hho); \ + } \ + if ((delptr)->hh.prev != NULL) { \ + ((UT_hash_handle*)((ptrdiff_t)((delptr)->hh.prev) + \ + (head)->hh.tbl->hho))->next = (delptr)->hh.next; \ + } else { \ + DECLTYPE_ASSIGN(head,(delptr)->hh.next); \ + } \ + if (_hd_hh_del->next != NULL) { \ + ((UT_hash_handle*)((ptrdiff_t)_hd_hh_del->next + \ + (head)->hh.tbl->hho))->prev = \ + _hd_hh_del->prev; \ + } \ + HASH_TO_BKT( _hd_hh_del->hashv, (head)->hh.tbl->num_buckets, _hd_bkt); \ + HASH_DEL_IN_BKT(hh,(head)->hh.tbl->buckets[_hd_bkt], _hd_hh_del); \ + (head)->hh.tbl->num_items--; \ + } \ + HASH_FSCK(hh,head); \ +} while (0) + + +/* convenience forms of HASH_FIND/HASH_ADD/HASH_DEL */ +#define HASH_FIND_STR(head,findstr,out) \ + HASH_FIND(hh,head,findstr,(unsigned)uthash_strlen(findstr),out) +#define HASH_ADD_STR(head,strfield,add) \ + HASH_ADD(hh,head,strfield[0],(unsigned)uthash_strlen(add->strfield),add) +#define HASH_REPLACE_STR(head,strfield,add,replaced) \ + HASH_REPLACE(hh,head,strfield[0],(unsigned)uthash_strlen(add->strfield),add,replaced) +#define HASH_FIND_INT(head,findint,out) \ + HASH_FIND(hh,head,findint,sizeof(int),out) +#define HASH_ADD_INT(head,intfield,add) \ + HASH_ADD(hh,head,intfield,sizeof(int),add) +#define HASH_REPLACE_INT(head,intfield,add,replaced) \ + HASH_REPLACE(hh,head,intfield,sizeof(int),add,replaced) +#define HASH_FIND_PTR(head,findptr,out) \ + HASH_FIND(hh,head,findptr,sizeof(void *),out) +#define HASH_ADD_PTR(head,ptrfield,add) \ + HASH_ADD(hh,head,ptrfield,sizeof(void *),add) +#define HASH_REPLACE_PTR(head,ptrfield,add,replaced) \ + HASH_REPLACE(hh,head,ptrfield,sizeof(void *),add,replaced) +#define HASH_DEL(head,delptr) \ + HASH_DELETE(hh,head,delptr) + +/* HASH_FSCK checks hash integrity on every add/delete when HASH_DEBUG is defined. + * This is for uthash developer only; it compiles away if HASH_DEBUG isn't defined. + */ +#ifdef HASH_DEBUG +#define HASH_OOPS(...) do { fprintf(stderr,__VA_ARGS__); exit(-1); } while (0) +#define HASH_FSCK(hh,head) \ +do { \ + struct UT_hash_handle *_thh; \ + if (head) { \ + unsigned _bkt_i; \ + unsigned _count; \ + char *_prev; \ + _count = 0; \ + for( _bkt_i = 0; _bkt_i < (head)->hh.tbl->num_buckets; _bkt_i++) { \ + unsigned _bkt_count = 0; \ + _thh = (head)->hh.tbl->buckets[_bkt_i].hh_head; \ + _prev = NULL; \ + while (_thh) { \ + if (_prev != (char*)(_thh->hh_prev)) { \ + HASH_OOPS("invalid hh_prev %p, actual %p\n", \ + _thh->hh_prev, _prev ); \ + } \ + _bkt_count++; \ + _prev = (char*)(_thh); \ + _thh = _thh->hh_next; \ + } \ + _count += _bkt_count; \ + if ((head)->hh.tbl->buckets[_bkt_i].count != _bkt_count) { \ + HASH_OOPS("invalid bucket count %u, actual %u\n", \ + (head)->hh.tbl->buckets[_bkt_i].count, _bkt_count); \ + } \ + } \ + if (_count != (head)->hh.tbl->num_items) { \ + HASH_OOPS("invalid hh item count %u, actual %u\n", \ + (head)->hh.tbl->num_items, _count ); \ + } \ + /* traverse hh in app order; check next/prev integrity, count */ \ + _count = 0; \ + _prev = NULL; \ + _thh = &(head)->hh; \ + while (_thh) { \ + _count++; \ + if (_prev !=(char*)(_thh->prev)) { \ + HASH_OOPS("invalid prev %p, actual %p\n", \ + _thh->prev, _prev ); \ + } \ + _prev = (char*)ELMT_FROM_HH((head)->hh.tbl, _thh); \ + _thh = ( _thh->next ? (UT_hash_handle*)((char*)(_thh->next) + \ + (head)->hh.tbl->hho) : NULL ); \ + } \ + if (_count != (head)->hh.tbl->num_items) { \ + HASH_OOPS("invalid app item count %u, actual %u\n", \ + (head)->hh.tbl->num_items, _count ); \ + } \ + } \ +} while (0) +#else +#define HASH_FSCK(hh,head) +#endif + +/* When compiled with -DHASH_EMIT_KEYS, length-prefixed keys are emitted to + * the descriptor to which this macro is defined for tuning the hash function. + * The app can #include to get the prototype for write(2). */ +#ifdef HASH_EMIT_KEYS +#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen) \ +do { \ + unsigned _klen = fieldlen; \ + write(HASH_EMIT_KEYS, &_klen, sizeof(_klen)); \ + write(HASH_EMIT_KEYS, keyptr, (unsigned long)fieldlen); \ +} while (0) +#else +#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen) +#endif + +/* default to Jenkin's hash unless overridden e.g. DHASH_FUNCTION=HASH_SAX */ +#ifdef HASH_FUNCTION +#define HASH_FCN HASH_FUNCTION +#else +#define HASH_FCN HASH_JEN +#endif + +/* The Bernstein hash function, used in Perl prior to v5.6. Note (x<<5+x)=x*33. */ +#define HASH_BER(key,keylen,hashv) \ +do { \ + unsigned _hb_keylen=(unsigned)keylen; \ + const unsigned char *_hb_key=(const unsigned char*)(key); \ + (hashv) = 0; \ + while (_hb_keylen-- != 0U) { \ + (hashv) = (((hashv) << 5) + (hashv)) + *_hb_key++; \ + } \ +} while (0) + + +/* SAX/FNV/OAT/JEN hash functions are macro variants of those listed at + * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx */ +#define HASH_SAX(key,keylen,hashv) \ +do { \ + unsigned _sx_i; \ + const unsigned char *_hs_key=(const unsigned char*)(key); \ + hashv = 0; \ + for(_sx_i=0; _sx_i < keylen; _sx_i++) { \ + hashv ^= (hashv << 5) + (hashv >> 2) + _hs_key[_sx_i]; \ + } \ +} while (0) +/* FNV-1a variation */ +#define HASH_FNV(key,keylen,hashv) \ +do { \ + unsigned _fn_i; \ + const unsigned char *_hf_key=(const unsigned char*)(key); \ + hashv = 2166136261U; \ + for(_fn_i=0; _fn_i < keylen; _fn_i++) { \ + hashv = hashv ^ _hf_key[_fn_i]; \ + hashv = hashv * 16777619U; \ + } \ +} while (0) + +#define HASH_OAT(key,keylen,hashv) \ +do { \ + unsigned _ho_i; \ + const unsigned char *_ho_key=(const unsigned char*)(key); \ + hashv = 0; \ + for(_ho_i=0; _ho_i < keylen; _ho_i++) { \ + hashv += _ho_key[_ho_i]; \ + hashv += (hashv << 10); \ + hashv ^= (hashv >> 6); \ + } \ + hashv += (hashv << 3); \ + hashv ^= (hashv >> 11); \ + hashv += (hashv << 15); \ +} while (0) + +#define HASH_JEN_MIX(a,b,c) \ +do { \ + a -= b; a -= c; a ^= ( c >> 13 ); \ + b -= c; b -= a; b ^= ( a << 8 ); \ + c -= a; c -= b; c ^= ( b >> 13 ); \ + a -= b; a -= c; a ^= ( c >> 12 ); \ + b -= c; b -= a; b ^= ( a << 16 ); \ + c -= a; c -= b; c ^= ( b >> 5 ); \ + a -= b; a -= c; a ^= ( c >> 3 ); \ + b -= c; b -= a; b ^= ( a << 10 ); \ + c -= a; c -= b; c ^= ( b >> 15 ); \ +} while (0) + +#define HASH_JEN(key,keylen,hashv) \ +do { \ + unsigned _hj_i,_hj_j,_hj_k; \ + unsigned const char *_hj_key=(unsigned const char*)(key); \ + hashv = 0xfeedbeefu; \ + _hj_i = _hj_j = 0x9e3779b9u; \ + _hj_k = (unsigned)(keylen); \ + while (_hj_k >= 12U) { \ + _hj_i += (_hj_key[0] + ( (unsigned)_hj_key[1] << 8 ) \ + + ( (unsigned)_hj_key[2] << 16 ) \ + + ( (unsigned)_hj_key[3] << 24 ) ); \ + _hj_j += (_hj_key[4] + ( (unsigned)_hj_key[5] << 8 ) \ + + ( (unsigned)_hj_key[6] << 16 ) \ + + ( (unsigned)_hj_key[7] << 24 ) ); \ + hashv += (_hj_key[8] + ( (unsigned)_hj_key[9] << 8 ) \ + + ( (unsigned)_hj_key[10] << 16 ) \ + + ( (unsigned)_hj_key[11] << 24 ) ); \ + \ + HASH_JEN_MIX(_hj_i, _hj_j, hashv); \ + \ + _hj_key += 12; \ + _hj_k -= 12U; \ + } \ + hashv += (unsigned)(keylen); \ + switch ( _hj_k ) { \ + case 11: hashv += ( (unsigned)_hj_key[10] << 24 ); /* FALLTHROUGH */ \ + case 10: hashv += ( (unsigned)_hj_key[9] << 16 ); /* FALLTHROUGH */ \ + case 9: hashv += ( (unsigned)_hj_key[8] << 8 ); /* FALLTHROUGH */ \ + case 8: _hj_j += ( (unsigned)_hj_key[7] << 24 ); /* FALLTHROUGH */ \ + case 7: _hj_j += ( (unsigned)_hj_key[6] << 16 ); /* FALLTHROUGH */ \ + case 6: _hj_j += ( (unsigned)_hj_key[5] << 8 ); /* FALLTHROUGH */ \ + case 5: _hj_j += _hj_key[4]; /* FALLTHROUGH */ \ + case 4: _hj_i += ( (unsigned)_hj_key[3] << 24 ); /* FALLTHROUGH */ \ + case 3: _hj_i += ( (unsigned)_hj_key[2] << 16 ); /* FALLTHROUGH */ \ + case 2: _hj_i += ( (unsigned)_hj_key[1] << 8 ); /* FALLTHROUGH */ \ + case 1: _hj_i += _hj_key[0]; \ + } \ + HASH_JEN_MIX(_hj_i, _hj_j, hashv); \ +} while (0) + +/* The Paul Hsieh hash function */ +#undef get16bits +#if (defined(__GNUC__) && defined(__i386__)) || defined(__WATCOMC__) \ + || defined(_MSC_VER) || defined (__BORLANDC__) || defined (__TURBOC__) +#define get16bits(d) (*((const uint16_t *) (d))) +#endif + +#if !defined (get16bits) +#define get16bits(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8) \ + +(uint32_t)(((const uint8_t *)(d))[0]) ) +#endif +#define HASH_SFH(key,keylen,hashv) \ +do { \ + unsigned const char *_sfh_key=(unsigned const char*)(key); \ + uint32_t _sfh_tmp, _sfh_len = (uint32_t)keylen; \ + \ + unsigned _sfh_rem = _sfh_len & 3U; \ + _sfh_len >>= 2; \ + hashv = 0xcafebabeu; \ + \ + /* Main loop */ \ + for (;_sfh_len > 0U; _sfh_len--) { \ + hashv += get16bits (_sfh_key); \ + _sfh_tmp = ((uint32_t)(get16bits (_sfh_key+2)) << 11) ^ hashv; \ + hashv = (hashv << 16) ^ _sfh_tmp; \ + _sfh_key += 2U*sizeof (uint16_t); \ + hashv += hashv >> 11; \ + } \ + \ + /* Handle end cases */ \ + switch (_sfh_rem) { \ + case 3: hashv += get16bits (_sfh_key); \ + hashv ^= hashv << 16; \ + hashv ^= (uint32_t)(_sfh_key[sizeof (uint16_t)]) << 18; \ + hashv += hashv >> 11; \ + break; \ + case 2: hashv += get16bits (_sfh_key); \ + hashv ^= hashv << 11; \ + hashv += hashv >> 17; \ + break; \ + case 1: hashv += *_sfh_key; \ + hashv ^= hashv << 10; \ + hashv += hashv >> 1; \ + } \ + \ + /* Force "avalanching" of final 127 bits */ \ + hashv ^= hashv << 3; \ + hashv += hashv >> 5; \ + hashv ^= hashv << 4; \ + hashv += hashv >> 17; \ + hashv ^= hashv << 25; \ + hashv += hashv >> 6; \ +} while (0) + +#ifdef HASH_USING_NO_STRICT_ALIASING +/* The MurmurHash exploits some CPU's (x86,x86_64) tolerance for unaligned reads. + * For other types of CPU's (e.g. Sparc) an unaligned read causes a bus error. + * MurmurHash uses the faster approach only on CPU's where we know it's safe. + * + * Note the preprocessor built-in defines can be emitted using: + * + * gcc -m64 -dM -E - < /dev/null (on gcc) + * cc -## a.c (where a.c is a simple test file) (Sun Studio) + */ +#if (defined(__i386__) || defined(__x86_64__) || defined(_M_IX86)) +#define MUR_GETBLOCK(p,i) p[i] +#else /* non intel */ +#define MUR_PLUS0_ALIGNED(p) (((unsigned long)p & 3UL) == 0UL) +#define MUR_PLUS1_ALIGNED(p) (((unsigned long)p & 3UL) == 1UL) +#define MUR_PLUS2_ALIGNED(p) (((unsigned long)p & 3UL) == 2UL) +#define MUR_PLUS3_ALIGNED(p) (((unsigned long)p & 3UL) == 3UL) +#define WP(p) ((uint32_t*)((unsigned long)(p) & ~3UL)) +#if (defined(__BIG_ENDIAN__) || defined(SPARC) || defined(__ppc__) || defined(__ppc64__)) +#define MUR_THREE_ONE(p) ((((*WP(p))&0x00ffffff) << 8) | (((*(WP(p)+1))&0xff000000) >> 24)) +#define MUR_TWO_TWO(p) ((((*WP(p))&0x0000ffff) <<16) | (((*(WP(p)+1))&0xffff0000) >> 16)) +#define MUR_ONE_THREE(p) ((((*WP(p))&0x000000ff) <<24) | (((*(WP(p)+1))&0xffffff00) >> 8)) +#else /* assume little endian non-intel */ +#define MUR_THREE_ONE(p) ((((*WP(p))&0xffffff00) >> 8) | (((*(WP(p)+1))&0x000000ff) << 24)) +#define MUR_TWO_TWO(p) ((((*WP(p))&0xffff0000) >>16) | (((*(WP(p)+1))&0x0000ffff) << 16)) +#define MUR_ONE_THREE(p) ((((*WP(p))&0xff000000) >>24) | (((*(WP(p)+1))&0x00ffffff) << 8)) +#endif +#define MUR_GETBLOCK(p,i) (MUR_PLUS0_ALIGNED(p) ? ((p)[i]) : \ + (MUR_PLUS1_ALIGNED(p) ? MUR_THREE_ONE(p) : \ + (MUR_PLUS2_ALIGNED(p) ? MUR_TWO_TWO(p) : \ + MUR_ONE_THREE(p)))) +#endif +#define MUR_ROTL32(x,r) (((x) << (r)) | ((x) >> (32 - (r)))) +#define MUR_FMIX(_h) \ +do { \ + _h ^= _h >> 16; \ + _h *= 0x85ebca6bu; \ + _h ^= _h >> 13; \ + _h *= 0xc2b2ae35u; \ + _h ^= _h >> 16; \ +} while (0) + +#define HASH_MUR(key,keylen,hashv) \ +do { \ + const uint8_t *_mur_data = (const uint8_t*)(key); \ + const int _mur_nblocks = (int)(keylen) / 4; \ + uint32_t _mur_h1 = 0xf88D5353u; \ + uint32_t _mur_c1 = 0xcc9e2d51u; \ + uint32_t _mur_c2 = 0x1b873593u; \ + uint32_t _mur_k1 = 0; \ + const uint8_t *_mur_tail; \ + const uint32_t *_mur_blocks = (const uint32_t*)(_mur_data+(_mur_nblocks*4)); \ + int _mur_i; \ + for(_mur_i = -_mur_nblocks; _mur_i!=0; _mur_i++) { \ + _mur_k1 = MUR_GETBLOCK(_mur_blocks,_mur_i); \ + _mur_k1 *= _mur_c1; \ + _mur_k1 = MUR_ROTL32(_mur_k1,15); \ + _mur_k1 *= _mur_c2; \ + \ + _mur_h1 ^= _mur_k1; \ + _mur_h1 = MUR_ROTL32(_mur_h1,13); \ + _mur_h1 = (_mur_h1*5U) + 0xe6546b64u; \ + } \ + _mur_tail = (const uint8_t*)(_mur_data + (_mur_nblocks*4)); \ + _mur_k1=0; \ + switch((keylen) & 3U) { \ + case 3: _mur_k1 ^= (uint32_t)_mur_tail[2] << 16; /* FALLTHROUGH */ \ + case 2: _mur_k1 ^= (uint32_t)_mur_tail[1] << 8; /* FALLTHROUGH */ \ + case 1: _mur_k1 ^= (uint32_t)_mur_tail[0]; \ + _mur_k1 *= _mur_c1; \ + _mur_k1 = MUR_ROTL32(_mur_k1,15); \ + _mur_k1 *= _mur_c2; \ + _mur_h1 ^= _mur_k1; \ + } \ + _mur_h1 ^= (uint32_t)(keylen); \ + MUR_FMIX(_mur_h1); \ + hashv = _mur_h1; \ +} while (0) +#endif /* HASH_USING_NO_STRICT_ALIASING */ + +/* iterate over items in a known bucket to find desired item */ +#define HASH_FIND_IN_BKT(tbl,hh,head,keyptr,keylen_in,hashval,out) \ +do { \ + if ((head).hh_head != NULL) { \ + DECLTYPE_ASSIGN(out, ELMT_FROM_HH(tbl, (head).hh_head)); \ + } else { \ + (out) = NULL; \ + } \ + while ((out) != NULL) { \ + if ((out)->hh.hashv == (hashval) && (out)->hh.keylen == (keylen_in)) { \ + if (uthash_memcmp((out)->hh.key, keyptr, keylen_in) == 0) { \ + break; \ + } \ + } \ + if ((out)->hh.hh_next != NULL) { \ + DECLTYPE_ASSIGN(out, ELMT_FROM_HH(tbl, (out)->hh.hh_next)); \ + } else { \ + (out) = NULL; \ + } \ + } \ +} while (0) + +/* add an item to a bucket */ +#define HASH_ADD_TO_BKT(head,addhh) \ +do { \ + head.count++; \ + (addhh)->hh_next = head.hh_head; \ + (addhh)->hh_prev = NULL; \ + if (head.hh_head != NULL) { (head).hh_head->hh_prev = (addhh); } \ + (head).hh_head=addhh; \ + if ((head.count >= ((head.expand_mult+1U) * HASH_BKT_CAPACITY_THRESH)) \ + && ((addhh)->tbl->noexpand != 1U)) { \ + HASH_EXPAND_BUCKETS((addhh)->tbl); \ + } \ +} while (0) + +/* remove an item from a given bucket */ +#define HASH_DEL_IN_BKT(hh,head,hh_del) \ + (head).count--; \ + if ((head).hh_head == hh_del) { \ + (head).hh_head = hh_del->hh_next; \ + } \ + if (hh_del->hh_prev) { \ + hh_del->hh_prev->hh_next = hh_del->hh_next; \ + } \ + if (hh_del->hh_next) { \ + hh_del->hh_next->hh_prev = hh_del->hh_prev; \ + } + +/* Bucket expansion has the effect of doubling the number of buckets + * and redistributing the items into the new buckets. Ideally the + * items will distribute more or less evenly into the new buckets + * (the extent to which this is true is a measure of the quality of + * the hash function as it applies to the key domain). + * + * With the items distributed into more buckets, the chain length + * (item count) in each bucket is reduced. Thus by expanding buckets + * the hash keeps a bound on the chain length. This bounded chain + * length is the essence of how a hash provides constant time lookup. + * + * The calculation of tbl->ideal_chain_maxlen below deserves some + * explanation. First, keep in mind that we're calculating the ideal + * maximum chain length based on the *new* (doubled) bucket count. + * In fractions this is just n/b (n=number of items,b=new num buckets). + * Since the ideal chain length is an integer, we want to calculate + * ceil(n/b). We don't depend on floating point arithmetic in this + * hash, so to calculate ceil(n/b) with integers we could write + * + * ceil(n/b) = (n/b) + ((n%b)?1:0) + * + * and in fact a previous version of this hash did just that. + * But now we have improved things a bit by recognizing that b is + * always a power of two. We keep its base 2 log handy (call it lb), + * so now we can write this with a bit shift and logical AND: + * + * ceil(n/b) = (n>>lb) + ( (n & (b-1)) ? 1:0) + * + */ +#define HASH_EXPAND_BUCKETS(tbl) \ +do { \ + unsigned _he_bkt; \ + unsigned _he_bkt_i; \ + struct UT_hash_handle *_he_thh, *_he_hh_nxt; \ + UT_hash_bucket *_he_new_buckets, *_he_newbkt; \ + _he_new_buckets = (UT_hash_bucket*)uthash_malloc( \ + 2UL * tbl->num_buckets * sizeof(struct UT_hash_bucket)); \ + if (!_he_new_buckets) { uthash_fatal( "out of memory"); } \ + memset(_he_new_buckets, 0, \ + 2UL * tbl->num_buckets * sizeof(struct UT_hash_bucket)); \ + tbl->ideal_chain_maxlen = \ + (tbl->num_items >> (tbl->log2_num_buckets+1U)) + \ + (((tbl->num_items & ((tbl->num_buckets*2U)-1U)) != 0U) ? 1U : 0U); \ + tbl->nonideal_items = 0; \ + for(_he_bkt_i = 0; _he_bkt_i < tbl->num_buckets; _he_bkt_i++) \ + { \ + _he_thh = tbl->buckets[ _he_bkt_i ].hh_head; \ + while (_he_thh != NULL) { \ + _he_hh_nxt = _he_thh->hh_next; \ + HASH_TO_BKT( _he_thh->hashv, tbl->num_buckets*2U, _he_bkt); \ + _he_newbkt = &(_he_new_buckets[ _he_bkt ]); \ + if (++(_he_newbkt->count) > tbl->ideal_chain_maxlen) { \ + tbl->nonideal_items++; \ + _he_newbkt->expand_mult = _he_newbkt->count / \ + tbl->ideal_chain_maxlen; \ + } \ + _he_thh->hh_prev = NULL; \ + _he_thh->hh_next = _he_newbkt->hh_head; \ + if (_he_newbkt->hh_head != NULL) { _he_newbkt->hh_head->hh_prev = \ + _he_thh; } \ + _he_newbkt->hh_head = _he_thh; \ + _he_thh = _he_hh_nxt; \ + } \ + } \ + uthash_free( tbl->buckets, tbl->num_buckets*sizeof(struct UT_hash_bucket) ); \ + tbl->num_buckets *= 2U; \ + tbl->log2_num_buckets++; \ + tbl->buckets = _he_new_buckets; \ + tbl->ineff_expands = (tbl->nonideal_items > (tbl->num_items >> 1)) ? \ + (tbl->ineff_expands+1U) : 0U; \ + if (tbl->ineff_expands > 1U) { \ + tbl->noexpand=1; \ + uthash_noexpand_fyi(tbl); \ + } \ + uthash_expand_fyi(tbl); \ +} while (0) + + +/* This is an adaptation of Simon Tatham's O(n log(n)) mergesort */ +/* Note that HASH_SORT assumes the hash handle name to be hh. + * HASH_SRT was added to allow the hash handle name to be passed in. */ +#define HASH_SORT(head,cmpfcn) HASH_SRT(hh,head,cmpfcn) +#define HASH_SRT(hh,head,cmpfcn) \ +do { \ + unsigned _hs_i; \ + unsigned _hs_looping,_hs_nmerges,_hs_insize,_hs_psize,_hs_qsize; \ + struct UT_hash_handle *_hs_p, *_hs_q, *_hs_e, *_hs_list, *_hs_tail; \ + if (head != NULL) { \ + _hs_insize = 1; \ + _hs_looping = 1; \ + _hs_list = &((head)->hh); \ + while (_hs_looping != 0U) { \ + _hs_p = _hs_list; \ + _hs_list = NULL; \ + _hs_tail = NULL; \ + _hs_nmerges = 0; \ + while (_hs_p != NULL) { \ + _hs_nmerges++; \ + _hs_q = _hs_p; \ + _hs_psize = 0; \ + for ( _hs_i = 0; _hs_i < _hs_insize; _hs_i++ ) { \ + _hs_psize++; \ + _hs_q = (UT_hash_handle*)((_hs_q->next != NULL) ? \ + ((void*)((char*)(_hs_q->next) + \ + (head)->hh.tbl->hho)) : NULL); \ + if (! (_hs_q) ) { break; } \ + } \ + _hs_qsize = _hs_insize; \ + while ((_hs_psize > 0U) || ((_hs_qsize > 0U) && (_hs_q != NULL))) {\ + if (_hs_psize == 0U) { \ + _hs_e = _hs_q; \ + _hs_q = (UT_hash_handle*)((_hs_q->next != NULL) ? \ + ((void*)((char*)(_hs_q->next) + \ + (head)->hh.tbl->hho)) : NULL); \ + _hs_qsize--; \ + } else if ( (_hs_qsize == 0U) || (_hs_q == NULL) ) { \ + _hs_e = _hs_p; \ + if (_hs_p != NULL){ \ + _hs_p = (UT_hash_handle*)((_hs_p->next != NULL) ? \ + ((void*)((char*)(_hs_p->next) + \ + (head)->hh.tbl->hho)) : NULL); \ + } \ + _hs_psize--; \ + } else if (( \ + cmpfcn(DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl,_hs_p)), \ + DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl,_hs_q))) \ + ) <= 0) { \ + _hs_e = _hs_p; \ + if (_hs_p != NULL){ \ + _hs_p = (UT_hash_handle*)((_hs_p->next != NULL) ? \ + ((void*)((char*)(_hs_p->next) + \ + (head)->hh.tbl->hho)) : NULL); \ + } \ + _hs_psize--; \ + } else { \ + _hs_e = _hs_q; \ + _hs_q = (UT_hash_handle*)((_hs_q->next != NULL) ? \ + ((void*)((char*)(_hs_q->next) + \ + (head)->hh.tbl->hho)) : NULL); \ + _hs_qsize--; \ + } \ + if ( _hs_tail != NULL ) { \ + _hs_tail->next = ((_hs_e != NULL) ? \ + ELMT_FROM_HH((head)->hh.tbl,_hs_e) : NULL); \ + } else { \ + _hs_list = _hs_e; \ + } \ + if (_hs_e != NULL) { \ + _hs_e->prev = ((_hs_tail != NULL) ? \ + ELMT_FROM_HH((head)->hh.tbl,_hs_tail) : NULL); \ + } \ + _hs_tail = _hs_e; \ + } \ + _hs_p = _hs_q; \ + } \ + if (_hs_tail != NULL){ \ + _hs_tail->next = NULL; \ + } \ + if ( _hs_nmerges <= 1U ) { \ + _hs_looping=0; \ + (head)->hh.tbl->tail = _hs_tail; \ + DECLTYPE_ASSIGN(head,ELMT_FROM_HH((head)->hh.tbl, _hs_list)); \ + } \ + _hs_insize *= 2U; \ + } \ + HASH_FSCK(hh,head); \ + } \ +} while (0) + +/* This function selects items from one hash into another hash. + * The end result is that the selected items have dual presence + * in both hashes. There is no copy of the items made; rather + * they are added into the new hash through a secondary hash + * hash handle that must be present in the structure. */ +#define HASH_SELECT(hh_dst, dst, hh_src, src, cond) \ +do { \ + unsigned _src_bkt, _dst_bkt; \ + void *_last_elt=NULL, *_elt; \ + UT_hash_handle *_src_hh, *_dst_hh, *_last_elt_hh=NULL; \ + ptrdiff_t _dst_hho = ((char*)(&(dst)->hh_dst) - (char*)(dst)); \ + if (src != NULL) { \ + for(_src_bkt=0; _src_bkt < (src)->hh_src.tbl->num_buckets; _src_bkt++) { \ + for(_src_hh = (src)->hh_src.tbl->buckets[_src_bkt].hh_head; \ + _src_hh != NULL; \ + _src_hh = _src_hh->hh_next) { \ + _elt = ELMT_FROM_HH((src)->hh_src.tbl, _src_hh); \ + if (cond(_elt)) { \ + _dst_hh = (UT_hash_handle*)(((char*)_elt) + _dst_hho); \ + _dst_hh->key = _src_hh->key; \ + _dst_hh->keylen = _src_hh->keylen; \ + _dst_hh->hashv = _src_hh->hashv; \ + _dst_hh->prev = _last_elt; \ + _dst_hh->next = NULL; \ + if (_last_elt_hh != NULL) { _last_elt_hh->next = _elt; } \ + if (dst == NULL) { \ + DECLTYPE_ASSIGN(dst,_elt); \ + HASH_MAKE_TABLE(hh_dst,dst); \ + } else { \ + _dst_hh->tbl = (dst)->hh_dst.tbl; \ + } \ + HASH_TO_BKT(_dst_hh->hashv, _dst_hh->tbl->num_buckets, _dst_bkt); \ + HASH_ADD_TO_BKT(_dst_hh->tbl->buckets[_dst_bkt],_dst_hh); \ + (dst)->hh_dst.tbl->num_items++; \ + _last_elt = _elt; \ + _last_elt_hh = _dst_hh; \ + } \ + } \ + } \ + } \ + HASH_FSCK(hh_dst,dst); \ +} while (0) + +#define HASH_CLEAR(hh,head) \ +do { \ + if (head != NULL) { \ + uthash_free((head)->hh.tbl->buckets, \ + (head)->hh.tbl->num_buckets*sizeof(struct UT_hash_bucket)); \ + HASH_BLOOM_FREE((head)->hh.tbl); \ + uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \ + (head)=NULL; \ + } \ +} while (0) + +#define HASH_OVERHEAD(hh,head) \ + ((head != NULL) ? ( \ + (size_t)(((head)->hh.tbl->num_items * sizeof(UT_hash_handle)) + \ + ((head)->hh.tbl->num_buckets * sizeof(UT_hash_bucket)) + \ + sizeof(UT_hash_table) + \ + (HASH_BLOOM_BYTELEN))) : 0U) + +#ifdef NO_DECLTYPE +#define HASH_ITER(hh,head,el,tmp) \ +for(((el)=(head)), ((*(char**)(&(tmp)))=(char*)((head!=NULL)?(head)->hh.next:NULL)); \ + (el) != NULL; ((el)=(tmp)), ((*(char**)(&(tmp)))=(char*)((tmp!=NULL)?(tmp)->hh.next:NULL))) +#else +#define HASH_ITER(hh,head,el,tmp) \ +for(((el)=(head)), ((tmp)=DECLTYPE(el)((head!=NULL)?(head)->hh.next:NULL)); \ + (el) != NULL; ((el)=(tmp)), ((tmp)=DECLTYPE(el)((tmp!=NULL)?(tmp)->hh.next:NULL))) +#endif + +/* obtain a count of items in the hash */ +#define HASH_COUNT(head) HASH_CNT(hh,head) +#define HASH_CNT(hh,head) ((head != NULL)?((head)->hh.tbl->num_items):0U) + +typedef struct UT_hash_bucket { + struct UT_hash_handle *hh_head; + unsigned count; + + /* expand_mult is normally set to 0. In this situation, the max chain length + * threshold is enforced at its default value, HASH_BKT_CAPACITY_THRESH. (If + * the bucket's chain exceeds this length, bucket expansion is triggered). + * However, setting expand_mult to a non-zero value delays bucket expansion + * (that would be triggered by additions to this particular bucket) + * until its chain length reaches a *multiple* of HASH_BKT_CAPACITY_THRESH. + * (The multiplier is simply expand_mult+1). The whole idea of this + * multiplier is to reduce bucket expansions, since they are expensive, in + * situations where we know that a particular bucket tends to be overused. + * It is better to let its chain length grow to a longer yet-still-bounded + * value, than to do an O(n) bucket expansion too often. + */ + unsigned expand_mult; + +} UT_hash_bucket; + +/* random signature used only to find hash tables in external analysis */ +#define HASH_SIGNATURE 0xa0111fe1u +#define HASH_BLOOM_SIGNATURE 0xb12220f2u + +typedef struct UT_hash_table { + UT_hash_bucket *buckets; + unsigned num_buckets, log2_num_buckets; + unsigned num_items; + struct UT_hash_handle *tail; /* tail hh in app order, for fast append */ + ptrdiff_t hho; /* hash handle offset (byte pos of hash handle in element */ + + /* in an ideal situation (all buckets used equally), no bucket would have + * more than ceil(#items/#buckets) items. that's the ideal chain length. */ + unsigned ideal_chain_maxlen; + + /* nonideal_items is the number of items in the hash whose chain position + * exceeds the ideal chain maxlen. these items pay the penalty for an uneven + * hash distribution; reaching them in a chain traversal takes >ideal steps */ + unsigned nonideal_items; + + /* ineffective expands occur when a bucket doubling was performed, but + * afterward, more than half the items in the hash had nonideal chain + * positions. If this happens on two consecutive expansions we inhibit any + * further expansion, as it's not helping; this happens when the hash + * function isn't a good fit for the key domain. When expansion is inhibited + * the hash will still work, albeit no longer in constant time. */ + unsigned ineff_expands, noexpand; + + uint32_t signature; /* used only to find hash tables in external analysis */ +#ifdef HASH_BLOOM + uint32_t bloom_sig; /* used only to test bloom exists in external analysis */ + uint8_t *bloom_bv; + uint8_t bloom_nbits; +#endif + +} UT_hash_table; + +typedef struct UT_hash_handle { + struct UT_hash_table *tbl; + void *prev; /* prev element in app order */ + void *next; /* next element in app order */ + struct UT_hash_handle *hh_prev; /* previous hh in bucket order */ + struct UT_hash_handle *hh_next; /* next hh in bucket order */ + void *key; /* ptr to enclosing struct's key */ + unsigned keylen; /* enclosing struct's key len */ + unsigned hashv; /* result of hash-fcn(key) */ +} UT_hash_handle; + +#endif /* UTHASH_H */ diff --git a/Sources/libsignal/utlist.h b/Sources/libsignal/utlist.h new file mode 100755 index 0000000..9b5534f --- /dev/null +++ b/Sources/libsignal/utlist.h @@ -0,0 +1,895 @@ +/* +Copyright (c) 2007-2016, Troy D. Hanson http://troydhanson.github.com/uthash/ +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER +OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#ifndef UTLIST_H +#define UTLIST_H + +#define UTLIST_VERSION 2.0.1 + +#include + +/* + * This file contains macros to manipulate singly and doubly-linked lists. + * + * 1. LL_ macros: singly-linked lists. + * 2. DL_ macros: doubly-linked lists. + * 3. CDL_ macros: circular doubly-linked lists. + * + * To use singly-linked lists, your structure must have a "next" pointer. + * To use doubly-linked lists, your structure must "prev" and "next" pointers. + * Either way, the pointer to the head of the list must be initialized to NULL. + * + * ----------------.EXAMPLE ------------------------- + * struct item { + * int id; + * struct item *prev, *next; + * } + * + * struct item *list = NULL: + * + * int main() { + * struct item *item; + * ... allocate and populate item ... + * DL_APPEND(list, item); + * } + * -------------------------------------------------- + * + * For doubly-linked lists, the append and delete macros are O(1) + * For singly-linked lists, append and delete are O(n) but prepend is O(1) + * The sort macro is O(n log(n)) for all types of single/double/circular lists. + */ + +/* These macros use decltype or the earlier __typeof GNU extension. + As decltype is only available in newer compilers (VS2010 or gcc 4.3+ + when compiling c++ code), this code uses whatever method is needed + or, for VS2008 where neither is available, uses casting workarounds. */ +#ifdef _MSC_VER /* MS compiler */ +#if _MSC_VER >= 1600 && defined(__cplusplus) /* VS2010 or newer in C++ mode */ +#define LDECLTYPE(x) decltype(x) +#else /* VS2008 or older (or VS2010 in C mode) */ +#define NO_DECLTYPE +#endif +#elif defined(__ICCARM__) +#define NO_DECLTYPE +#else /* GNU, Sun and other compilers */ +#define LDECLTYPE(x) __typeof(x) +#endif + +/* for VS2008 we use some workarounds to get around the lack of decltype, + * namely, we always reassign our tmp variable to the list head if we need + * to dereference its prev/next pointers, and save/restore the real head.*/ +#ifdef NO_DECLTYPE +#define IF_NO_DECLTYPE(x) x +#define LDECLTYPE(x) char* +#define _SV(elt,list) _tmp = (char*)(list); {char **_alias = (char**)&(list); *_alias = (elt); } +#define _NEXT(elt,list,next) ((char*)((list)->next)) +#define _NEXTASGN(elt,list,to,next) { char **_alias = (char**)&((list)->next); *_alias=(char*)(to); } +/* #define _PREV(elt,list,prev) ((char*)((list)->prev)) */ +#define _PREVASGN(elt,list,to,prev) { char **_alias = (char**)&((list)->prev); *_alias=(char*)(to); } +#define _RS(list) { char **_alias = (char**)&(list); *_alias=_tmp; } +#define _CASTASGN(a,b) { char **_alias = (char**)&(a); *_alias=(char*)(b); } +#else +#define IF_NO_DECLTYPE(x) +#define _SV(elt,list) +#define _NEXT(elt,list,next) ((elt)->next) +#define _NEXTASGN(elt,list,to,next) ((elt)->next)=(to) +/* #define _PREV(elt,list,prev) ((elt)->prev) */ +#define _PREVASGN(elt,list,to,prev) ((elt)->prev)=(to) +#define _RS(list) +#define _CASTASGN(a,b) (a)=(b) +#endif + +/****************************************************************************** + * The sort macro is an adaptation of Simon Tatham's O(n log(n)) mergesort * + * Unwieldy variable names used here to avoid shadowing passed-in variables. * + *****************************************************************************/ +#define LL_SORT(list, cmp) \ + LL_SORT2(list, cmp, next) + +#define LL_SORT2(list, cmp, next) \ +do { \ + LDECLTYPE(list) _ls_p; \ + LDECLTYPE(list) _ls_q; \ + LDECLTYPE(list) _ls_e; \ + LDECLTYPE(list) _ls_tail; \ + IF_NO_DECLTYPE(LDECLTYPE(list) _tmp;) \ + int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping; \ + if (list) { \ + _ls_insize = 1; \ + _ls_looping = 1; \ + while (_ls_looping) { \ + _CASTASGN(_ls_p,list); \ + (list) = NULL; \ + _ls_tail = NULL; \ + _ls_nmerges = 0; \ + while (_ls_p) { \ + _ls_nmerges++; \ + _ls_q = _ls_p; \ + _ls_psize = 0; \ + for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) { \ + _ls_psize++; \ + _SV(_ls_q,list); _ls_q = _NEXT(_ls_q,list,next); _RS(list); \ + if (!_ls_q) break; \ + } \ + _ls_qsize = _ls_insize; \ + while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) { \ + if (_ls_psize == 0) { \ + _ls_e = _ls_q; _SV(_ls_q,list); _ls_q = \ + _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--; \ + } else if (_ls_qsize == 0 || !_ls_q) { \ + _ls_e = _ls_p; _SV(_ls_p,list); _ls_p = \ + _NEXT(_ls_p,list,next); _RS(list); _ls_psize--; \ + } else if (cmp(_ls_p,_ls_q) <= 0) { \ + _ls_e = _ls_p; _SV(_ls_p,list); _ls_p = \ + _NEXT(_ls_p,list,next); _RS(list); _ls_psize--; \ + } else { \ + _ls_e = _ls_q; _SV(_ls_q,list); _ls_q = \ + _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--; \ + } \ + if (_ls_tail) { \ + _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,_ls_e,next); _RS(list); \ + } else { \ + _CASTASGN(list,_ls_e); \ + } \ + _ls_tail = _ls_e; \ + } \ + _ls_p = _ls_q; \ + } \ + if (_ls_tail) { \ + _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,NULL,next); _RS(list); \ + } \ + if (_ls_nmerges <= 1) { \ + _ls_looping=0; \ + } \ + _ls_insize *= 2; \ + } \ + } \ +} while (0) + + +#define DL_SORT(list, cmp) \ + DL_SORT2(list, cmp, prev, next) + +#define DL_SORT2(list, cmp, prev, next) \ +do { \ + LDECLTYPE(list) _ls_p; \ + LDECLTYPE(list) _ls_q; \ + LDECLTYPE(list) _ls_e; \ + LDECLTYPE(list) _ls_tail; \ + IF_NO_DECLTYPE(LDECLTYPE(list) _tmp;) \ + int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping; \ + if (list) { \ + _ls_insize = 1; \ + _ls_looping = 1; \ + while (_ls_looping) { \ + _CASTASGN(_ls_p,list); \ + (list) = NULL; \ + _ls_tail = NULL; \ + _ls_nmerges = 0; \ + while (_ls_p) { \ + _ls_nmerges++; \ + _ls_q = _ls_p; \ + _ls_psize = 0; \ + for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) { \ + _ls_psize++; \ + _SV(_ls_q,list); _ls_q = _NEXT(_ls_q,list,next); _RS(list); \ + if (!_ls_q) break; \ + } \ + _ls_qsize = _ls_insize; \ + while ((_ls_psize > 0) || ((_ls_qsize > 0) && _ls_q)) { \ + if (_ls_psize == 0) { \ + _ls_e = _ls_q; _SV(_ls_q,list); _ls_q = \ + _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--; \ + } else if ((_ls_qsize == 0) || (!_ls_q)) { \ + _ls_e = _ls_p; _SV(_ls_p,list); _ls_p = \ + _NEXT(_ls_p,list,next); _RS(list); _ls_psize--; \ + } else if (cmp(_ls_p,_ls_q) <= 0) { \ + _ls_e = _ls_p; _SV(_ls_p,list); _ls_p = \ + _NEXT(_ls_p,list,next); _RS(list); _ls_psize--; \ + } else { \ + _ls_e = _ls_q; _SV(_ls_q,list); _ls_q = \ + _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--; \ + } \ + if (_ls_tail) { \ + _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,_ls_e,next); _RS(list); \ + } else { \ + _CASTASGN(list,_ls_e); \ + } \ + _SV(_ls_e,list); _PREVASGN(_ls_e,list,_ls_tail,prev); _RS(list); \ + _ls_tail = _ls_e; \ + } \ + _ls_p = _ls_q; \ + } \ + _CASTASGN((list)->prev, _ls_tail); \ + _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,NULL,next); _RS(list); \ + if (_ls_nmerges <= 1) { \ + _ls_looping=0; \ + } \ + _ls_insize *= 2; \ + } \ + } \ +} while (0) + +#define CDL_SORT(list, cmp) \ + CDL_SORT2(list, cmp, prev, next) + +#define CDL_SORT2(list, cmp, prev, next) \ +do { \ + LDECLTYPE(list) _ls_p; \ + LDECLTYPE(list) _ls_q; \ + LDECLTYPE(list) _ls_e; \ + LDECLTYPE(list) _ls_tail; \ + LDECLTYPE(list) _ls_oldhead; \ + LDECLTYPE(list) _tmp; \ + int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping; \ + if (list) { \ + _ls_insize = 1; \ + _ls_looping = 1; \ + while (_ls_looping) { \ + _CASTASGN(_ls_p,list); \ + _CASTASGN(_ls_oldhead,list); \ + (list) = NULL; \ + _ls_tail = NULL; \ + _ls_nmerges = 0; \ + while (_ls_p) { \ + _ls_nmerges++; \ + _ls_q = _ls_p; \ + _ls_psize = 0; \ + for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) { \ + _ls_psize++; \ + _SV(_ls_q,list); \ + if (_NEXT(_ls_q,list,next) == _ls_oldhead) { \ + _ls_q = NULL; \ + } else { \ + _ls_q = _NEXT(_ls_q,list,next); \ + } \ + _RS(list); \ + if (!_ls_q) break; \ + } \ + _ls_qsize = _ls_insize; \ + while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) { \ + if (_ls_psize == 0) { \ + _ls_e = _ls_q; _SV(_ls_q,list); _ls_q = \ + _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--; \ + if (_ls_q == _ls_oldhead) { _ls_q = NULL; } \ + } else if (_ls_qsize == 0 || !_ls_q) { \ + _ls_e = _ls_p; _SV(_ls_p,list); _ls_p = \ + _NEXT(_ls_p,list,next); _RS(list); _ls_psize--; \ + if (_ls_p == _ls_oldhead) { _ls_p = NULL; } \ + } else if (cmp(_ls_p,_ls_q) <= 0) { \ + _ls_e = _ls_p; _SV(_ls_p,list); _ls_p = \ + _NEXT(_ls_p,list,next); _RS(list); _ls_psize--; \ + if (_ls_p == _ls_oldhead) { _ls_p = NULL; } \ + } else { \ + _ls_e = _ls_q; _SV(_ls_q,list); _ls_q = \ + _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--; \ + if (_ls_q == _ls_oldhead) { _ls_q = NULL; } \ + } \ + if (_ls_tail) { \ + _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,_ls_e,next); _RS(list); \ + } else { \ + _CASTASGN(list,_ls_e); \ + } \ + _SV(_ls_e,list); _PREVASGN(_ls_e,list,_ls_tail,prev); _RS(list); \ + _ls_tail = _ls_e; \ + } \ + _ls_p = _ls_q; \ + } \ + _CASTASGN((list)->prev,_ls_tail); \ + _CASTASGN(_tmp,list); \ + _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,_tmp,next); _RS(list); \ + if (_ls_nmerges <= 1) { \ + _ls_looping=0; \ + } \ + _ls_insize *= 2; \ + } \ + } \ +} while (0) + +/****************************************************************************** + * singly linked list macros (non-circular) * + *****************************************************************************/ +#define LL_PREPEND(head,add) \ + LL_PREPEND2(head,add,next) + +#define LL_PREPEND2(head,add,next) \ +do { \ + (add)->next = (head); \ + (head) = (add); \ +} while (0) + +#define LL_CONCAT(head1,head2) \ + LL_CONCAT2(head1,head2,next) + +#define LL_CONCAT2(head1,head2,next) \ +do { \ + LDECLTYPE(head1) _tmp; \ + if (head1) { \ + _tmp = (head1); \ + while (_tmp->next) { _tmp = _tmp->next; } \ + _tmp->next=(head2); \ + } else { \ + (head1)=(head2); \ + } \ +} while (0) + +#define LL_APPEND(head,add) \ + LL_APPEND2(head,add,next) + +#define LL_APPEND2(head,add,next) \ +do { \ + LDECLTYPE(head) _tmp; \ + (add)->next=NULL; \ + if (head) { \ + _tmp = (head); \ + while (_tmp->next) { _tmp = _tmp->next; } \ + _tmp->next=(add); \ + } else { \ + (head)=(add); \ + } \ +} while (0) + +#define LL_DELETE(head,del) \ + LL_DELETE2(head,del,next) + +#define LL_DELETE2(head,del,next) \ +do { \ + LDECLTYPE(head) _tmp; \ + if ((head) == (del)) { \ + (head)=(head)->next; \ + } else { \ + _tmp = (head); \ + while (_tmp->next && (_tmp->next != (del))) { \ + _tmp = _tmp->next; \ + } \ + if (_tmp->next) { \ + _tmp->next = (del)->next; \ + } \ + } \ +} while (0) + +#define LL_COUNT(head,el,counter) \ + LL_COUNT2(head,el,counter,next) \ + +#define LL_COUNT2(head,el,counter,next) \ +do { \ + (counter) = 0; \ + LL_FOREACH2(head,el,next) { ++(counter); } \ +} while (0) + +#define LL_FOREACH(head,el) \ + LL_FOREACH2(head,el,next) + +#define LL_FOREACH2(head,el,next) \ + for ((el) = (head); el; (el) = (el)->next) + +#define LL_FOREACH_SAFE(head,el,tmp) \ + LL_FOREACH_SAFE2(head,el,tmp,next) + +#define LL_FOREACH_SAFE2(head,el,tmp,next) \ + for ((el) = (head); (el) && ((tmp) = (el)->next, 1); (el) = (tmp)) + +#define LL_SEARCH_SCALAR(head,out,field,val) \ + LL_SEARCH_SCALAR2(head,out,field,val,next) + +#define LL_SEARCH_SCALAR2(head,out,field,val,next) \ +do { \ + LL_FOREACH2(head,out,next) { \ + if ((out)->field == (val)) break; \ + } \ +} while (0) + +#define LL_SEARCH(head,out,elt,cmp) \ + LL_SEARCH2(head,out,elt,cmp,next) + +#define LL_SEARCH2(head,out,elt,cmp,next) \ +do { \ + LL_FOREACH2(head,out,next) { \ + if ((cmp(out,elt))==0) break; \ + } \ +} while (0) + +#define LL_REPLACE_ELEM2(head, el, add, next) \ +do { \ + LDECLTYPE(head) _tmp; \ + assert((head) != NULL); \ + assert((el) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el)->next; \ + if ((head) == (el)) { \ + (head) = (add); \ + } else { \ + _tmp = (head); \ + while (_tmp->next && (_tmp->next != (el))) { \ + _tmp = _tmp->next; \ + } \ + if (_tmp->next) { \ + _tmp->next = (add); \ + } \ + } \ +} while (0) + +#define LL_REPLACE_ELEM(head, el, add) \ + LL_REPLACE_ELEM2(head, el, add, next) + +#define LL_PREPEND_ELEM2(head, el, add, next) \ +do { \ + if (el) { \ + LDECLTYPE(head) _tmp; \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el); \ + if ((head) == (el)) { \ + (head) = (add); \ + } else { \ + _tmp = (head); \ + while (_tmp->next && (_tmp->next != (el))) { \ + _tmp = _tmp->next; \ + } \ + if (_tmp->next) { \ + _tmp->next = (add); \ + } \ + } \ + } else { \ + LL_APPEND2(head, add, next); \ + } \ +} while (0) \ + +#define LL_PREPEND_ELEM(head, el, add) \ + LL_PREPEND_ELEM2(head, el, add, next) + +#define LL_APPEND_ELEM2(head, el, add, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el)->next; \ + (el)->next = (add); \ + } else { \ + LL_PREPEND2(head, add, next); \ + } \ +} while (0) \ + +#define LL_APPEND_ELEM(head, el, add) \ + LL_APPEND_ELEM2(head, el, add, next) + +#ifdef NO_DECLTYPE +/* Here are VS2008 / NO_DECLTYPE replacements for a few functions */ + +#undef LL_CONCAT2 +#define LL_CONCAT2(head1,head2,next) \ +do { \ + char *_tmp; \ + if (head1) { \ + _tmp = (char*)(head1); \ + while ((head1)->next) { (head1) = (head1)->next; } \ + (head1)->next = (head2); \ + _RS(head1); \ + } else { \ + (head1)=(head2); \ + } \ +} while (0) + +#undef LL_APPEND2 +#define LL_APPEND2(head,add,next) \ +do { \ + if (head) { \ + (add)->next = head; /* use add->next as a temp variable */ \ + while ((add)->next->next) { (add)->next = (add)->next->next; } \ + (add)->next->next=(add); \ + } else { \ + (head)=(add); \ + } \ + (add)->next=NULL; \ +} while (0) + +#undef LL_DELETE2 +#define LL_DELETE2(head,del,next) \ +do { \ + if ((head) == (del)) { \ + (head)=(head)->next; \ + } else { \ + char *_tmp = (char*)(head); \ + while ((head)->next && ((head)->next != (del))) { \ + (head) = (head)->next; \ + } \ + if ((head)->next) { \ + (head)->next = ((del)->next); \ + } \ + _RS(head); \ + } \ +} while (0) + +#undef LL_REPLACE_ELEM2 +#define LL_REPLACE_ELEM2(head, el, add, next) \ +do { \ + assert((head) != NULL); \ + assert((el) != NULL); \ + assert((add) != NULL); \ + if ((head) == (el)) { \ + (head) = (add); \ + } else { \ + (add)->next = head; \ + while ((add)->next->next && ((add)->next->next != (el))) { \ + (add)->next = (add)->next->next; \ + } \ + if ((add)->next->next) { \ + (add)->next->next = (add); \ + } \ + } \ + (add)->next = (el)->next; \ +} while (0) + +#undef LL_PREPEND_ELEM2 +#define LL_PREPEND_ELEM2(head, el, add, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + if ((head) == (el)) { \ + (head) = (add); \ + } else { \ + (add)->next = (head); \ + while ((add)->next->next && ((add)->next->next != (el))) { \ + (add)->next = (add)->next->next; \ + } \ + if ((add)->next->next) { \ + (add)->next->next = (add); \ + } \ + } \ + (add)->next = (el); \ + } else { \ + LL_APPEND2(head, add, next); \ + } \ +} while (0) \ + +#endif /* NO_DECLTYPE */ + +/****************************************************************************** + * doubly linked list macros (non-circular) * + *****************************************************************************/ +#define DL_PREPEND(head,add) \ + DL_PREPEND2(head,add,prev,next) + +#define DL_PREPEND2(head,add,prev,next) \ +do { \ + (add)->next = (head); \ + if (head) { \ + (add)->prev = (head)->prev; \ + (head)->prev = (add); \ + } else { \ + (add)->prev = (add); \ + } \ + (head) = (add); \ +} while (0) + +#define DL_APPEND(head,add) \ + DL_APPEND2(head,add,prev,next) + +#define DL_APPEND2(head,add,prev,next) \ +do { \ + if (head) { \ + (add)->prev = (head)->prev; \ + (head)->prev->next = (add); \ + (head)->prev = (add); \ + (add)->next = NULL; \ + } else { \ + (head)=(add); \ + (head)->prev = (head); \ + (head)->next = NULL; \ + } \ +} while (0) + +#define DL_CONCAT(head1,head2) \ + DL_CONCAT2(head1,head2,prev,next) + +#define DL_CONCAT2(head1,head2,prev,next) \ +do { \ + LDECLTYPE(head1) _tmp; \ + if (head2) { \ + if (head1) { \ + _CASTASGN(_tmp, (head2)->prev); \ + (head2)->prev = (head1)->prev; \ + (head1)->prev->next = (head2); \ + _CASTASGN((head1)->prev, _tmp); \ + } else { \ + (head1)=(head2); \ + } \ + } \ +} while (0) + +#define DL_DELETE(head,del) \ + DL_DELETE2(head,del,prev,next) + +#define DL_DELETE2(head,del,prev,next) \ +do { \ + assert((del)->prev != NULL); \ + if ((del)->prev == (del)) { \ + (head)=NULL; \ + } else if ((del)==(head)) { \ + (del)->next->prev = (del)->prev; \ + (head) = (del)->next; \ + } else { \ + (del)->prev->next = (del)->next; \ + if ((del)->next) { \ + (del)->next->prev = (del)->prev; \ + } else { \ + (head)->prev = (del)->prev; \ + } \ + } \ +} while (0) + +#define DL_COUNT(head,el,counter) \ + DL_COUNT2(head,el,counter,next) \ + +#define DL_COUNT2(head,el,counter,next) \ +do { \ + (counter) = 0; \ + DL_FOREACH2(head,el,next) { ++(counter); } \ +} while (0) + +#define DL_FOREACH(head,el) \ + DL_FOREACH2(head,el,next) + +#define DL_FOREACH2(head,el,next) \ + for ((el) = (head); el; (el) = (el)->next) + +/* this version is safe for deleting the elements during iteration */ +#define DL_FOREACH_SAFE(head,el,tmp) \ + DL_FOREACH_SAFE2(head,el,tmp,next) + +#define DL_FOREACH_SAFE2(head,el,tmp,next) \ + for ((el) = (head); (el) && ((tmp) = (el)->next, 1); (el) = (tmp)) + +/* these are identical to their singly-linked list counterparts */ +#define DL_SEARCH_SCALAR LL_SEARCH_SCALAR +#define DL_SEARCH LL_SEARCH +#define DL_SEARCH_SCALAR2 LL_SEARCH_SCALAR2 +#define DL_SEARCH2 LL_SEARCH2 + +#define DL_REPLACE_ELEM2(head, el, add, prev, next) \ +do { \ + assert((head) != NULL); \ + assert((el) != NULL); \ + assert((add) != NULL); \ + if ((head) == (el)) { \ + (head) = (add); \ + (add)->next = (el)->next; \ + if ((el)->next == NULL) { \ + (add)->prev = (add); \ + } else { \ + (add)->prev = (el)->prev; \ + (add)->next->prev = (add); \ + } \ + } else { \ + (add)->next = (el)->next; \ + (add)->prev = (el)->prev; \ + (add)->prev->next = (add); \ + if ((el)->next == NULL) { \ + (head)->prev = (add); \ + } else { \ + (add)->next->prev = (add); \ + } \ + } \ +} while (0) + +#define DL_REPLACE_ELEM(head, el, add) \ + DL_REPLACE_ELEM2(head, el, add, prev, next) + +#define DL_PREPEND_ELEM2(head, el, add, prev, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el); \ + (add)->prev = (el)->prev; \ + (el)->prev = (add); \ + if ((head) == (el)) { \ + (head) = (add); \ + } else { \ + (add)->prev->next = (add); \ + } \ + } else { \ + DL_APPEND2(head, add, prev, next); \ + } \ +} while (0) \ + +#define DL_PREPEND_ELEM(head, el, add) \ + DL_PREPEND_ELEM2(head, el, add, prev, next) + +#define DL_APPEND_ELEM2(head, el, add, prev, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el)->next; \ + (add)->prev = (el); \ + (el)->next = (add); \ + if ((add)->next) { \ + (add)->next->prev = (add); \ + } else { \ + (head)->prev = (add); \ + } \ + } else { \ + DL_PREPEND2(head, add, prev, next); \ + } \ +} while (0) \ + +#define DL_APPEND_ELEM(head, el, add) \ + DL_APPEND_ELEM2(head, el, add, prev, next) + +/****************************************************************************** + * circular doubly linked list macros * + *****************************************************************************/ +#define CDL_APPEND(head,add) \ + CDL_APPEND2(head,add,prev,next) + +#define CDL_APPEND2(head,add,prev,next) \ +do { \ + if (head) { \ + (add)->prev = (head)->prev; \ + (add)->next = (head); \ + (head)->prev = (add); \ + (add)->prev->next = (add); \ + } else { \ + (add)->prev = (add); \ + (add)->next = (add); \ + (head) = (add); \ + } \ +} while (0) + +#define CDL_PREPEND(head,add) \ + CDL_PREPEND2(head,add,prev,next) + +#define CDL_PREPEND2(head,add,prev,next) \ +do { \ + if (head) { \ + (add)->prev = (head)->prev; \ + (add)->next = (head); \ + (head)->prev = (add); \ + (add)->prev->next = (add); \ + } else { \ + (add)->prev = (add); \ + (add)->next = (add); \ + } \ + (head) = (add); \ +} while (0) + +#define CDL_DELETE(head,del) \ + CDL_DELETE2(head,del,prev,next) + +#define CDL_DELETE2(head,del,prev,next) \ +do { \ + if (((head)==(del)) && ((head)->next == (head))) { \ + (head) = NULL; \ + } else { \ + (del)->next->prev = (del)->prev; \ + (del)->prev->next = (del)->next; \ + if ((del) == (head)) (head)=(del)->next; \ + } \ +} while (0) + +#define CDL_COUNT(head,el,counter) \ + CDL_COUNT2(head,el,counter,next) \ + +#define CDL_COUNT2(head, el, counter,next) \ +do { \ + (counter) = 0; \ + CDL_FOREACH2(head,el,next) { ++(counter); } \ +} while (0) + +#define CDL_FOREACH(head,el) \ + CDL_FOREACH2(head,el,next) + +#define CDL_FOREACH2(head,el,next) \ + for ((el)=(head);el;(el)=(((el)->next==(head)) ? NULL : (el)->next)) + +#define CDL_FOREACH_SAFE(head,el,tmp1,tmp2) \ + CDL_FOREACH_SAFE2(head,el,tmp1,tmp2,prev,next) + +#define CDL_FOREACH_SAFE2(head,el,tmp1,tmp2,prev,next) \ + for ((el) = (head), (tmp1) = (head) ? (head)->prev : NULL; \ + (el) && ((tmp2) = (el)->next, 1); \ + (el) = ((el) == (tmp1) ? NULL : (tmp2))) + +#define CDL_SEARCH_SCALAR(head,out,field,val) \ + CDL_SEARCH_SCALAR2(head,out,field,val,next) + +#define CDL_SEARCH_SCALAR2(head,out,field,val,next) \ +do { \ + CDL_FOREACH2(head,out,next) { \ + if ((out)->field == (val)) break; \ + } \ +} while (0) + +#define CDL_SEARCH(head,out,elt,cmp) \ + CDL_SEARCH2(head,out,elt,cmp,next) + +#define CDL_SEARCH2(head,out,elt,cmp,next) \ +do { \ + CDL_FOREACH2(head,out,next) { \ + if ((cmp(out,elt))==0) break; \ + } \ +} while (0) + +#define CDL_REPLACE_ELEM2(head, el, add, prev, next) \ +do { \ + assert((head) != NULL); \ + assert((el) != NULL); \ + assert((add) != NULL); \ + if ((el)->next == (el)) { \ + (add)->next = (add); \ + (add)->prev = (add); \ + (head) = (add); \ + } else { \ + (add)->next = (el)->next; \ + (add)->prev = (el)->prev; \ + (add)->next->prev = (add); \ + (add)->prev->next = (add); \ + if ((head) == (el)) { \ + (head) = (add); \ + } \ + } \ +} while (0) + +#define CDL_REPLACE_ELEM(head, el, add) \ + CDL_REPLACE_ELEM2(head, el, add, prev, next) + +#define CDL_PREPEND_ELEM2(head, el, add, prev, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el); \ + (add)->prev = (el)->prev; \ + (el)->prev = (add); \ + (add)->prev->next = (add); \ + if ((head) == (el)) { \ + (head) = (add); \ + } \ + } else { \ + CDL_APPEND2(head, add, prev, next); \ + } \ +} while (0) + +#define CDL_PREPEND_ELEM(head, el, add) \ + CDL_PREPEND_ELEM2(head, el, add, prev, next) + +#define CDL_APPEND_ELEM2(head, el, add, prev, next) \ +do { \ + if (el) { \ + assert((head) != NULL); \ + assert((add) != NULL); \ + (add)->next = (el)->next; \ + (add)->prev = (el); \ + (el)->next = (add); \ + (add)->next->prev = (add); \ + } else { \ + CDL_PREPEND2(head, add, prev, next); \ + } \ +} while (0) + +#define CDL_APPEND_ELEM(head, el, add) \ + CDL_APPEND_ELEM2(head, el, add, prev, next) + +#endif /* UTLIST_H */ diff --git a/Sources/libsignal/vpool.c b/Sources/libsignal/vpool.c new file mode 100755 index 0000000..97b4ec8 --- /dev/null +++ b/Sources/libsignal/vpool.c @@ -0,0 +1,232 @@ +/* + * Copyright (c) 2006, 2008 Alexey Vatchenko + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include + +#include +#include +#include +#include +#include + +#include "vpool.h" + +static void vpool_shift(struct vpool *pool); +static int vpool_new_size(struct vpool *pool, size_t datsize, + size_t *size); +static int vpool_resize(struct vpool *pool, size_t datsize); + +static void +vpool_shift(struct vpool *pool) +{ + if (pool->v_buf != pool->v_basebuf) { + memmove(pool->v_basebuf, pool->v_buf, pool->v_off); + pool->v_buf = pool->v_basebuf; + } +} + +static int +vpool_new_size(struct vpool *pool, size_t datsize, size_t *size) +{ + size_t need; + size_t rem; + + if (datsize <= pool->v_size - pool->v_off) { + *size = pool->v_size; + return (0); + } + + /* Check limit of new requested size */ + if (pool->v_limit - pool->v_off < datsize) + return (EFBIG); + need = pool->v_off + datsize; + + /* Check limit of new size aligned to block size */ + rem = need % pool->v_blksize; + if (rem != 0) { + if (pool->v_limit - pool->v_off >= + datsize + (pool->v_blksize - rem)) + need += pool->v_blksize - rem; + else + need = pool->v_limit; + } + + *size = need; + return (0); +} + +static int +vpool_resize(struct vpool *pool, size_t datsize) +{ + char *ret; + size_t size; + int error; + + error = vpool_new_size(pool, datsize, &size); + if (error != 0) + return (error); + + if (size > pool->v_size) { + ret = (char *) malloc(size); + if (ret == NULL) + return (ENOMEM); + + memcpy(ret, pool->v_buf, pool->v_off); + free(pool->v_basebuf); + pool->v_basebuf = pool->v_buf = ret; + pool->v_size = size; + } else if ((pool->v_size - pool->v_off) - + (size_t)((char*)pool->v_buf - (char*)pool->v_basebuf) < datsize) + vpool_shift(pool); + + return (0); +} + +void +vpool_init(struct vpool *pool, size_t blksize, size_t limit) +{ + + pool->v_basebuf = pool->v_buf = NULL; + pool->v_off = pool->v_size = 0; + + pool->v_blksize = (blksize == 0) ? 4096 : blksize; /* XXX */ + pool->v_limit = (limit == 0) ? SIZE_MAX : limit; + + pool->v_lasterr = 0; +} + +void +vpool_final(struct vpool *pool) +{ + free(pool->v_basebuf); +} + +void +vpool_reset(struct vpool *pool) +{ + free(pool->v_basebuf); + pool->v_basebuf = pool->v_buf = NULL; + pool->v_off = pool->v_size = 0; + pool->v_lasterr = 0; +} + +void +vpool_wipe(struct vpool *pool) +{ + pool->v_off = 0; + pool->v_lasterr = 0; +} + +void * +vpool_insert(struct vpool *pool, size_t where, void *data, size_t datsize) +{ + char *ret; + int error; + + error = vpool_resize(pool, datsize); + if (error != 0) { + pool->v_lasterr = error; + return (NULL); + } + + /* + * If ``where'' is greater than or equal to offset then + * we are appending data to the end of the buffer. + */ + if (where > pool->v_off) + where = pool->v_off; + + ret = (char *)pool->v_buf + where; + if (pool->v_off - where > 0) + memmove(ret + datsize, ret, pool->v_off - where); + memcpy(ret, data, datsize); + pool->v_off += datsize; + pool->v_lasterr = 0; + + return (ret); +} + +void * +vpool_expand(struct vpool *pool, size_t where, size_t size) +{ + char *ret; + int error; + + error = vpool_resize(pool, size); + if (error != 0) { + pool->v_lasterr = error; + return (NULL); + } + + /* + * If ``where'' is greater than or equal to offset then + * we are appending data to the end of the buffer. + */ + if (where > pool->v_off) + where = pool->v_off; + + ret = (char *)pool->v_buf + where; + if (pool->v_off - where > 0) + memmove(ret + size, ret, pool->v_off - where); + pool->v_off += size; + pool->v_lasterr = 0; + + return (ret); +} + +int +vpool_truncate(struct vpool *pool, + size_t where, size_t size, enum vpool_trunc how) +{ + /* Check if caller wants to remove more data than we have */ + if (where >= pool->v_off || + size > pool->v_off || pool->v_off - size < where) { + pool->v_lasterr = ERANGE; + return (pool->v_lasterr); + } + + if (how == VPOOL_EXCLUDE) { + if (where == 0) { + /* + * Optimization. + * Don't move data, just adjust pointer. + */ + pool->v_buf = (char *)pool->v_buf + size; + } else { + memmove((char *)pool->v_buf + where, + (char *)pool->v_buf + where + size, + pool->v_off - size - where); + } + pool->v_off -= size; + } else { + pool->v_buf = (char*)(pool->v_buf) + where; + pool->v_off = size; + } + + pool->v_lasterr = 0; + return (0); +} + +void +vpool_export(struct vpool *pool, void **buf, size_t *size) +{ + vpool_shift(pool); + *buf = pool->v_buf; + *size = pool->v_off; + pool->v_basebuf = pool->v_buf = NULL; + pool->v_off = pool->v_size = 0; + pool->v_lasterr = 0; +} diff --git a/Sources/libsignal/vpool.h b/Sources/libsignal/vpool.h new file mode 100755 index 0000000..9a54e42 --- /dev/null +++ b/Sources/libsignal/vpool.h @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2006, 2008 Alexey Vatchenko + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * VPool: implementation of pool of data with a variable size. + */ +#ifndef _VPOOL_H_ +#define _VPOOL_H_ + +#include +#include + +struct vpool { + void *v_basebuf; /* pointer returned by (re|m)alloc() */ + void *v_buf; /* actual data starts here */ + size_t v_off; + size_t v_size; + + size_t v_blksize; + size_t v_limit; + int v_lasterr; +}; + +enum vpool_trunc {VPOOL_EXCLUDE, VPOOL_INCLUDE}; +#define VPOOL_TAIL UINT_MAX + +void vpool_init(struct vpool *pool, size_t blksize, size_t limit); +void vpool_final(struct vpool *pool); + +void vpool_reset(struct vpool *pool); +void vpool_wipe(struct vpool *pool); + +void * vpool_insert(struct vpool *pool, + size_t where, void *data, size_t datsize); +void * vpool_expand(struct vpool *pool, size_t where, size_t size); + +int vpool_truncate(struct vpool *pool, + size_t where, size_t size, enum vpool_trunc how); + +#define vpool_is_empty(pool) ((pool)->v_off == 0) +#define vpool_get_buf(pool) ((pool)->v_buf) +#define vpool_get_length(pool) ((pool)->v_off) +#define vpool_get_error(pool) ((pool)->v_lasterr) + +void vpool_export(struct vpool *pool, void **buf, size_t *size); + +#endif /* !_VPOOL_H_ */