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GOST R 34.10 signer and verifier

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orignal 2017-02-16 21:18:18 -05:00
parent 22af4da4d4
commit 9363db816c
1 changed files with 49 additions and 0 deletions
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49
Signature.h
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@ -441,6 +441,55 @@ namespace crypto
EDDSA25519Signer signer (signingPrivateKey);
memcpy (signingPublicKey, signer.GetPublicKey (), EDDSA25519_PUBLIC_KEY_LENGTH);
}
// ГОСТ Р 34.10-2001
const size_t GOSTR3410_PUBLIC_KEY_LENGTH = 64;
const size_t GOSTR3410_SIGNATURE_LENGTH = 64;
class GOSTR3410Verifier: public Verifier
{
public:
GOSTR3410Verifier (const uint8_t * signingKey) { m_PublicKey = nullptr; } // TODO
~GOSTR3410Verifier () { EVP_PKEY_free (m_PublicKey); }
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const
{
EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new (m_PublicKey, nullptr);
EVP_PKEY_verify_init (ctx);
int ret = EVP_PKEY_verify (ctx, signature, GOSTR3410_SIGNATURE_LENGTH, buf, len);
EVP_PKEY_CTX_free (ctx);
return ret == 1;
}
size_t GetPublicKeyLen () const { return GOSTR3410_PUBLIC_KEY_LENGTH; }
size_t GetSignatureLen () const { return GOSTR3410_SIGNATURE_LENGTH; }
private:
EVP_PKEY * m_PublicKey;
};
class GOSTR3410Signer: public Signer
{
public:
GOSTR3410Signer (const uint8_t * signingPrivateKey) { m_PrivateKey = nullptr; } // TODO
~GOSTR3410Signer () { EVP_PKEY_free (m_PrivateKey); }
void Sign (const uint8_t * buf, int len, uint8_t * signature) const
{
EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new (m_PrivateKey, nullptr);
EVP_PKEY_sign_init (ctx);
size_t l = GOSTR3410_SIGNATURE_LENGTH;
EVP_PKEY_sign (ctx, signature, &l, buf, len);
EVP_PKEY_CTX_free (ctx);
}
private:
EVP_PKEY * m_PrivateKey;
};
}
}