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added TC26 param sets for GOST R 34.10-2012

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orignal 2017-03-14 20:03:44 -04:00
parent e877247032
commit 6369a900da
4 changed files with 57 additions and 41 deletions
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35
Signature.h
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@ -472,22 +472,25 @@ namespace crypto
SHA512 (buf, len, digest); // TODO: implement GOST R 34.11 - 2012
}
enum { hashLen = 32 };
enum { hashLen = 64 };
};
// ГОСТ Р 34.10
const size_t GOSTR3410_PUBLIC_KEY_LENGTH = 64;
const size_t GOSTR3410_SIGNATURE_LENGTH = 64;
const size_t GOSTR3410_256_PUBLIC_KEY_LENGTH = 64;
const size_t GOSTR3410_512_PUBLIC_KEY_LENGTH = 128;
template<typename Hash>
class GOSTR3410Verifier: public Verifier
{
public:
GOSTR3410Verifier (GOSTR3410ParamSet paramSet, const uint8_t * signingKey)
enum { keyLen = Hash::hashLen };
GOSTR3410Verifier (GOSTR3410ParamSet paramSet, const uint8_t * signingKey):
m_ParamSet (paramSet)
{
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);
BIGNUM * x = BN_bin2bn (signingKey, GetPublicKeyLen ()/2, NULL);
BIGNUM * y = BN_bin2bn (signingKey + GetPublicKeyLen ()/2, GetPublicKeyLen ()/2, NULL);
m_PublicKey = GetGOSTR3410Curve (m_ParamSet)->CreatePoint (x, y);
BN_free (x); BN_free (y);
}
@ -497,16 +500,16 @@ namespace crypto
{
uint8_t digest[Hash::hashLen];
Hash::CalculateHash (buf, len, digest);
BIGNUM * d = BN_bin2bn (digest, 32, nullptr);
BIGNUM * d = BN_bin2bn (digest, Hash::hashLen, nullptr);
BIGNUM * r = BN_bin2bn (signature, GetSignatureLen ()/2, NULL);
BIGNUM * s = BN_bin2bn (signature + GetSignatureLen ()/2, GetSignatureLen ()/2, NULL);
bool ret = GetGOSTR3410Curve (m_ParamSet)->Verify (m_PublicKey, d, r, s);
BN_free (d); BN_free (r); BN_free (s);
return ret;
}
size_t GetPublicKeyLen () const { return GOSTR3410_PUBLIC_KEY_LENGTH; }
size_t GetSignatureLen () const { return GOSTR3410_SIGNATURE_LENGTH; }
size_t GetPublicKeyLen () const { return keyLen*2; }
size_t GetSignatureLen () const { return keyLen*2; }
private:
@ -519,10 +522,12 @@ namespace crypto
{
public:
enum { keyLen = Hash::hashLen };
GOSTR3410Signer (GOSTR3410ParamSet paramSet, const uint8_t * signingPrivateKey):
m_ParamSet (paramSet)
{
m_PrivateKey = BN_bin2bn (signingPrivateKey, GOSTR3410_PUBLIC_KEY_LENGTH/2, nullptr);
m_PrivateKey = BN_bin2bn (signingPrivateKey, keyLen, nullptr);
}
~GOSTR3410Signer () { BN_free (m_PrivateKey); }
@ -533,8 +538,8 @@ namespace crypto
BIGNUM * d = BN_bin2bn (digest, 32, nullptr);
BIGNUM * r = BN_new (), * s = BN_new ();
GetGOSTR3410Curve (m_ParamSet)->Sign (m_PrivateKey, d, r, s);
bn2buf (r, signature, GOSTR3410_SIGNATURE_LENGTH/2);
bn2buf (s, signature + GOSTR3410_SIGNATURE_LENGTH/2, GOSTR3410_SIGNATURE_LENGTH/2);
bn2buf (r, signature, keyLen);
bn2buf (s, signature + keyLen, keyLen);
BN_free (d); BN_free (r); BN_free (s);
}
@ -563,6 +568,10 @@ namespace crypto
typedef GOSTR3410Verifier<GOSTR3411_2001_Hash> GOSTR3410_2001_Verifier;
typedef GOSTR3410Signer<GOSTR3411_2001_Hash> GOSTR3410_2001_Signer;
typedef GOSTR3410Verifier<GOSTR3411_2012_256_Hash> GOSTR3410_2012_256_Verifier;
typedef GOSTR3410Signer<GOSTR3411_2012_256_Hash> GOSTR3410_2012_256_Signer;
typedef GOSTR3410Verifier<GOSTR3411_2012_512_Hash> GOSTR3410_2012_512_Verifier;
typedef GOSTR3410Signer<GOSTR3411_2012_512_Hash> GOSTR3410_2012_512_Signer;
}
}