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Code Issues Releases Activity

ECDSA P-256 signature

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orignal 2014-08-21 14:26:15 -04:00
parent 90fe263124
commit b77325c689
1 changed files with 26 additions and 1 deletions
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27
Signature.h
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@ -3,6 +3,9 @@
#include <inttypes.h> #include <inttypes.h>
#include <cryptopp/dsa.h> #include <cryptopp/dsa.h>
#include <cryptopp/asn.h>
#include <cryptopp/oids.h>
#include <cryptopp/eccrypto.h>
#include "CryptoConst.h" #include "CryptoConst.h"
namespace i2p namespace i2p
@ -35,7 +38,29 @@ namespace crypto
private: private:
CryptoPP::DSA::PublicKey m_PublicKey; CryptoPP::DSA::PublicKey m_PublicKey;
}; };
class ECDSAP256Verifier: public Verifier
{
public:
ECDSAP256Verifier (const uint8_t * signingKey)
{
m_PublicKey.Initialize (CryptoPP::ASN1::secp256r1(),
CryptoPP::ECP::Point (CryptoPP::Integer (signingKey, 32),
CryptoPP::Integer (signingKey + 32, 32)));
}
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature)
{
CryptoPP::ECDSA<CryptoPP::ECP, CryptoPP::SHA256>::Verifier verifier (m_PublicKey);
return verifier.VerifyMessage (buf, len, signature, 64);
}
private:
CryptoPP::ECDSA<CryptoPP::ECP, CryptoPP::SHA256>::PublicKey m_PublicKey;
};
} }
} }