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Convert code ''RSA verify function'' to Assembly code

$100-500 USD

Ukończony
Opublikowano ponad 17 lat temu

$100-500 USD

Płatne przy odbiorze
Hello Coders, We need to convert the following function into assembly code: ---- bool RSAVerifyBuffer(const char *pubFilename, const char *messageFilename, const char *signatureFilename) { StringSource pubFile(pubFilename, true, new HexDecoder); RSASSA_PKCS1v15_SHA_Verifier pub(pubFile); StringSource signatureFile(signatureFilename, true, new HexDecoder); if ([login to view URL]() != [login to view URL]()) return false; SecByteBlock signature([login to view URL]()); [login to view URL](signature, [login to view URL]()); VerifierFilter *verifierFilter = new VerifierFilter(pub); verifierFilter->Put(signature, [login to view URL]()); StringSource f(messageFilename, true, verifierFilter); return verifierFilter->GetLastResult(); } -- That code is taken from Crypto++ library (we just changed "FileSource" for "StringResource" to work with buffer instead of files). (Note, there is also "LibTomCrypt" which has the rsa_verify function in C, in case you prefer look into that one instead, though you should also need the SHA function) We don't require the conversion from that C++ code specifically, that is, we just want the function "RSAVerifyBuffer" implemented in Assembly language (you can copy paste code some IDA disassembled code if you want). If you want to code that function from the scratch (without looking into the above code), that's excellent too. RSAVerifyBuffer receives 3 arguments: bool RSAVerifyBuffer(publicKey, msgtoVerify, signature) publicKey = pointer to public key to verify the buffer msgToVerify = pointer to message to verify signature = signature to compare verification The final solution can be just a command line application compiled with MASM which receives the 3 arguments to pass to RSAVerifyBuffer. Regards. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Windows
Identyfikator projektu: 3967755

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O kliencie

Flaga SPAIN
Jerez de la Frontera, Spain
5,0
72
Członek od wrz 22, 2004

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