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correct param set for GOST R 34.10 verification

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orignal 2017-03-10 11:55:30 -05:00
parent 084e48d6dd
commit ba89c60b6d
3 changed files with 62 additions and 28 deletions

28
Signature.h
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@ -462,36 +462,18 @@ namespace crypto
{
public:
GOSTR3410Verifier (const uint8_t * signingKey)
{
m_PublicKey = EVP_PKEY_new ();
EC_KEY * ecKey = EC_KEY_new ();
EVP_PKEY_assign (m_PublicKey, NID_id_GostR3410_2001, ecKey);
EVP_PKEY_copy_parameters (m_PublicKey, GetGostPKEY ());
BIGNUM * x = BN_bin2bn (signingKey, GOSTR3410_PUBLIC_KEY_LENGTH/2, NULL);
BIGNUM * y = BN_bin2bn (signingKey + GOSTR3410_PUBLIC_KEY_LENGTH/2, GOSTR3410_PUBLIC_KEY_LENGTH/2, NULL);
EC_KEY_set_public_key_affine_coordinates (ecKey, x, y);
BN_free (x); BN_free (y);
}
~GOSTR3410Verifier () { EVP_PKEY_free (m_PublicKey); }
GOSTR3410Verifier (GOSTR3410ParamSet paramSet, const uint8_t * signingKey);
~GOSTR3410Verifier () { EC_POINT_free (m_PublicKey); }
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const
{
uint8_t digest[32];
GOSTR3411 (buf, len, digest);
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, digest, 32);
EVP_PKEY_CTX_free (ctx);
return ret == 1;
}
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const;
size_t GetPublicKeyLen () const { return GOSTR3410_PUBLIC_KEY_LENGTH; }
size_t GetSignatureLen () const { return GOSTR3410_SIGNATURE_LENGTH; }
private:
EVP_PKEY * m_PublicKey;
GOSTR3410ParamSet m_ParamSet;
EC_POINT * m_PublicKey;
};
class GOSTR3410Signer: public Signer