Mirrors/i2pd
2
0
Fork 0
mirror of https://github.com/PurpleI2P/i2pd.git synced 2025-04-28 11:47:48 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

initial support of GOST R 34.10-2012

Browse source
This commit is contained in:
orignal 2017-03-14 16:02:16 -04:00
parent a52064463e
commit 5bcc5ff873
6 changed files with 70 additions and 71 deletions
Download patch file Download diff file Expand all files Collapse all files

51
Signature.cpp
View file

@ -492,57 +492,6 @@ namespace crypto
{
GetEd25519 ()->Sign (m_ExpandedPrivateKey, m_PublicKeyEncoded, buf, len, signature);
}
//----------------------------------------------
// GOST
GOSTR3410Verifier::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);
m_PublicKey = GetGOSTR3410Curve (m_ParamSet)->CreatePoint (x, y);
BN_free (x); BN_free (y);
}
bool GOSTR3410Verifier::Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const
{
uint8_t digest[32];
GOSTR3411 (buf, len, digest);
BIGNUM * d = BN_bin2bn (digest, 32, 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;
}
void GOSTR3410Signer::Sign (const uint8_t * buf, int len, uint8_t * signature) const
{
uint8_t digest[32];
GOSTR3411 (buf, len, digest);
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);
BN_free (d); BN_free (r); BN_free (s);
}
void CreateGOSTR3410RandomKeys (GOSTR3410ParamSet paramSet, uint8_t * signingPrivateKey, uint8_t * signingPublicKey)
{
RAND_bytes (signingPrivateKey, GOSTR3410_PUBLIC_KEY_LENGTH/2);
BIGNUM * priv = BN_bin2bn (signingPrivateKey, GOSTR3410_PUBLIC_KEY_LENGTH/2, nullptr);
const auto& curve = GetGOSTR3410Curve (paramSet);
auto pub = curve->MulP (priv);
BN_free (priv);
BIGNUM * x = BN_new (), * y = BN_new ();
curve->GetXY (pub, x, y);
EC_POINT_free (pub);
bn2buf (x, signingPublicKey, GOSTR3410_PUBLIC_KEY_LENGTH/2);
bn2buf (y, signingPublicKey + GOSTR3410_PUBLIC_KEY_LENGTH/2, GOSTR3410_PUBLIC_KEY_LENGTH/2);
BN_free (x); BN_free (y);
}
}
}