FYI, i use a keylength of 4096 bit On 12 sep, 12:33, Bob Doppens <[EMAIL PROTECTED]> wrote: > Hi Jeff, > > I had a look at the page you provided, altough i can't recognize any > implementation flaws on my side, could you please shed some further > light into this? > > Thanks, > Bob > > On 11 sep, 23:35, "Jeffrey Walton" <[EMAIL PROTECTED]> wrote: > > > Hi Bob, > > >http://www.cryptopp.com/wiki/RSA > > > Jeff > > > On 9/11/07, Bob Doppens <[EMAIL PROTECTED]> wrote: > > > > Hello, > > > > It seems that the RsaSignFile method (taken from test.cpp) returns > > > different values depending on the compilation mode (release or debug). > > > While the method works ok in debug it doesn't seem to work in release > > > (means returns a wrong value). > > > > Here are the 2 slightly modified methods (for signing and verifying): > > > > static std::string sign(const std::string& message, const std::string& > > > priv_key) > > > { > > > std::string sig; > > > CryptoPP::StringSource source(priv_key, true, new > > > CryptoPP::HexDecoder()); > > > CryptoPP::RSASS<CryptoPP::PKCS1v15, CryptoPP::SHA>::Signer > > > signer(source); > > > CryptoPP::StringSource(message, true, new > > > CryptoPP::SignerFilter(CryptoPP::AutoSeededRandomPool(), signer, > > > new CryptoPP::HexEncoder(new > > > CryptoPP::StringSink(sig)))); > > > > return sig; > > > } > > > > static bool verify(const std::string& message, const std::string& > > > pub_key , const std::string& sig) > > > { > > > CryptoPP::StringSource pub_source(pub_key, true, new > > > CryptoPP::HexDecoder()); > > > CryptoPP::RSASS<CryptoPP::PKCS1v15, > > > CryptoPP::SHA>::Verifier > > > verifier(pub_source); > > > > CryptoPP::StringSource sig_source(sig, true, new > > > CryptoPP::HexDecoder()); > > > if (sig_source.MaxRetrievable() != > > > verifier.SignatureLength()) > > > return false; > > > > CryptoPP::SecByteBlock > > > signature(verifier.SignatureLength()); > > > sig_source.Get(signature, signature.size()); > > > > CryptoPP::VerifierFilter *filter = new > > > CryptoPP::VerifierFilter(verifier); > > > filter->Put(signature, verifier.SignatureLength()); > > > CryptoPP::StringSource(message, true, filter); > > > > return filter->GetLastResult(); > > > } > > > > Any help would be appreciated
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