public void Init(DerObjectIdentifier publicKeyParamSetOid, DerObjectIdentifier digestParamSetOid)
{
var curve = ECGost3410NamedCurves.GetByOid(publicKeyParamSetOid);
var ecp = new ECNamedDomainParameters(publicKeyParamSetOid, curve);
var gostParams = new ECGost3410Parameters(ecp, publicKeyParamSetOid, digestParamSetOid, null);
var param = new ECKeyGenerationParameters(gostParams, new SecureRandom());
var generator = new ECKeyPairGenerator();
generator.Init(param);
_keyPair = generator.GenerateKeyPair();
}
public static AsymmetricCipherKeyPair GenerateGostKeyPair(DerObjectIdentifier publicKeyParamSetOid, DerObjectIdentifier digestParamSetOid)
{
var curve = ECGost3410NamedCurves.GetByOid(publicKeyParamSetOid);
var ecp = new ECNamedDomainParameters(publicKeyParamSetOid, curve);
var gostParams = new ECGost3410Parameters(ecp, publicKeyParamSetOid, digestParamSetOid, null);
var param = new ECKeyGenerationParameters(gostParams, _random);
var generator = new ECKeyPairGenerator();
generator.Init(param);
return(generator.GenerateKeyPair());
}
protected override AsymmetricCipherKeyPair GenerateKeyPair()
{
DerObjectIdentifier oid = ECGost3410NamedCurves.GetOid("GostR3410-2001-CryptoPro-A");
ECNamedDomainParameters ecp = new ECNamedDomainParameters(oid, ECGost3410NamedCurves.GetByOid(oid));
ECGost3410Parameters gostParams =
new ECGost3410Parameters(ecp, oid, RosstandartObjectIdentifiers.id_tc26_gost_3411_12_256, null);
ECKeyGenerationParameters parameters = new ECKeyGenerationParameters(gostParams, new SecureRandom());
ECKeyPairGenerator engine = new ECKeyPairGenerator();
engine.Init(parameters);
AsymmetricCipherKeyPair pair = engine.GenerateKeyPair();
return(pair);
}
private static AsymmetricCipherKeyPair GetKeyPair()
{
// this is wont working for ECGost3410Parameters
//var generator = GeneratorUtilities.GetKeyPairGenerator(KeyAlgorithm);
//generator.Init(new ECKeyGenerationParameters(PublicKeyParamSet, new SecureRandom()));
//return generator.GenerateKeyPair();
// we need generate "specific" key for GOST 2012 BUT with paramSet from GOST 2001 (B)
var ecp = new ECNamedDomainParameters(PublicKeyParamSet, ECGost3410NamedCurves.GetByOid(PublicKeyParamSet));
var gostParams = new ECGost3410Parameters(ecp, PublicKeyParamSet, RosstandartObjectIdentifiers.id_tc26_gost_3411_12_256, null);
var parameters = new ECKeyGenerationParameters(gostParams, new SecureRandom());
var generator = new ECKeyPairGenerator();
generator.Init(parameters);
return(generator.GenerateKeyPair());
}
private static AsymmetricCipherKeyPair GenerateKeyPair(AlgParSet parameters)
{
while (true)
{
using var form = new KeyGenerationForm();
var result = form.ShowDialog();
if (result == DialogResult.OK)
{
var parametersObject = GetDigitalSignatureAlgoParameterSetOID(parameters);
var ecp = new ECNamedDomainParameters(parametersObject, ECGost3410NamedCurves.GetByOidX9(parametersObject));
var gostParams = new ECGost3410Parameters(ecp, parametersObject, GetDigitalSignatureAlgoOID(parameters), null);
SecureRandom rand = new SecureRandom();
rand.SetSeed(form.Seed.ToArray());
var pars = new ECKeyGenerationParameters(gostParams, rand);
var generator = new ECKeyPairGenerator();
generator.Init(pars);
return(generator.GenerateKeyPair());
}
}
}
public SimpleTestResult EncodeDecodePublicLW(string oidStr, DerObjectIdentifier digest)
{
DerObjectIdentifier oid = ECGost3410NamedCurves.GetOid(oidStr);
ECNamedDomainParameters ecp = new ECNamedDomainParameters(oid, ECGost3410NamedCurves.GetByOid(oid));
ECGOST3410Parameters gostParams = new ECGOST3410Parameters(ecp, oid, digest, null);
ECKeyGenerationParameters parameters = new ECKeyGenerationParameters(gostParams, new SecureRandom());
ECKeyPairGenerator engine = new ECKeyPairGenerator();
engine.Init(parameters);
AsymmetricCipherKeyPair pair = engine.GenerateKeyPair();
ECPublicKeyParameters generatedKeyParameters = (ECPublicKeyParameters)pair.Public;
SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(generatedKeyParameters);
ECPublicKeyParameters recoveredKeyParameters = (ECPublicKeyParameters)PublicKeyFactory.CreateKey(info);
{ // Specifically cast and test gost parameters.
ECGOST3410Parameters gParam = (ECGOST3410Parameters)generatedKeyParameters.Parameters;
ECGOST3410Parameters rParam = (ECGOST3410Parameters)recoveredKeyParameters.Parameters;
bool ok = SafeEquals(gParam.DigestParamSet, rParam.DigestParamSet) &&
SafeEquals(gParam.EncryptionParamSet, rParam.EncryptionParamSet) &&
SafeEquals(gParam.PublicKeyParamSet, rParam.PublicKeyParamSet);
if (!ok)
{
return(new SimpleTestResult(false, "GOST parameters does not match"));
}
}
if (!((ECGOST3410Parameters)recoveredKeyParameters.Parameters).Name.Equals(
((ECGOST3410Parameters)generatedKeyParameters.Parameters).Name))
{
return(new SimpleTestResult(false, "Name does not match"));
}
if (recoveredKeyParameters.IsPrivate != generatedKeyParameters.IsPrivate)
{
return(new SimpleTestResult(false, "isPrivate does not match"));
}
if (!Arrays.AreEqual(recoveredKeyParameters.Q.GetEncoded(true), generatedKeyParameters.Q.GetEncoded(true)))
{
return(new SimpleTestResult(false, "Q does not match"));
}
if (!recoveredKeyParameters.Parameters.Curve.Equals(generatedKeyParameters.Parameters.Curve))
{
return(new SimpleTestResult(false, "Curve does not match"));
}
if (!Arrays.AreEqual(
recoveredKeyParameters.Parameters.G.GetEncoded(true),
generatedKeyParameters.Parameters.G.GetEncoded(true)))
{
return(new SimpleTestResult(false, "G does not match"));
}
if (!recoveredKeyParameters.Parameters.H.Equals(generatedKeyParameters.Parameters.H))
{
return(new SimpleTestResult(false, "H does not match"));
}
if (!recoveredKeyParameters.Parameters.HInv.Equals(generatedKeyParameters.Parameters.HInv))
{
return(new SimpleTestResult(false, "Hinv does not match"));
}
if (!recoveredKeyParameters.Parameters.N.Equals(generatedKeyParameters.Parameters.N))
{
return(new SimpleTestResult(false, "N does not match"));
}
if (!Arrays.AreEqual(recoveredKeyParameters.Parameters.GetSeed(), generatedKeyParameters.Parameters.GetSeed()))
{
return(new SimpleTestResult(false, "Seed does not match"));
}
return(new SimpleTestResult(true, null));
}
public SimpleTestResult EncodeRecodePublicKey()
{
DerObjectIdentifier oid = ECGost3410NamedCurves.GetOid("Tc26-Gost-3410-12-512-paramSetA");
ECNamedDomainParameters ecp = new ECNamedDomainParameters(oid, ECGost3410NamedCurves.GetByOid(oid));
ECGOST3410Parameters gostParams = new ECGOST3410Parameters(ecp, oid, RosstandartObjectIdentifiers.id_tc26_gost_3411_12_512, null);
ECKeyGenerationParameters paramameters = new ECKeyGenerationParameters(gostParams, new SecureRandom());
ECKeyPairGenerator engine = new ECKeyPairGenerator();
engine.Init(paramameters);
AsymmetricCipherKeyPair pair = engine.GenerateKeyPair();
ECPublicKeyParameters generatedKeyParameters = (ECPublicKeyParameters)pair.Public;
ECPublicKeyParameters keyParameters = generatedKeyParameters;
//
// Continuously encode/decode the key and check for loss of information.
//
for (int t = 0; t < 3; t++)
{
SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(keyParameters);
keyParameters = (ECPublicKeyParameters)PublicKeyFactory.CreateKey(info);
{ // Specifically cast and test gost parameters.
ECGOST3410Parameters gParam = (ECGOST3410Parameters)generatedKeyParameters.Parameters;
ECGOST3410Parameters rParam = (ECGOST3410Parameters)keyParameters.Parameters;
bool ok = SafeEquals(gParam.DigestParamSet, rParam.DigestParamSet) &&
SafeEquals(gParam.EncryptionParamSet, rParam.EncryptionParamSet) &&
SafeEquals(gParam.PublicKeyParamSet, rParam.PublicKeyParamSet);
if (!ok)
{
return(new SimpleTestResult(false, "GOST parameters does not match"));
}
}
if (!((ECGOST3410Parameters)keyParameters.Parameters).Name.Equals(
((ECGOST3410Parameters)generatedKeyParameters.Parameters).Name))
{
return(new SimpleTestResult(false, "Name does not match"));
}
if (keyParameters.IsPrivate != generatedKeyParameters.IsPrivate)
{
return(new SimpleTestResult(false, "isPrivate does not match"));
}
if (!Arrays.AreEqual(keyParameters.Q.GetEncoded(true), generatedKeyParameters.Q.GetEncoded(true)))
{
return(new SimpleTestResult(false, "Q does not match"));
}
if (!keyParameters.Parameters.Curve.Equals(generatedKeyParameters.Parameters.Curve))
{
return(new SimpleTestResult(false, "Curve does not match"));
}
if (!Arrays.AreEqual(
keyParameters.Parameters.G.GetEncoded(true),
generatedKeyParameters.Parameters.G.GetEncoded(true)))
{
return(new SimpleTestResult(false, "G does not match"));
}
if (!keyParameters.Parameters.H.Equals(generatedKeyParameters.Parameters.H))
{
return(new SimpleTestResult(false, "H does not match"));
}
if (!keyParameters.Parameters.HInv.Equals(generatedKeyParameters.Parameters.HInv))
{
return(new SimpleTestResult(false, "Hinv does not match"));
}
if (!keyParameters.Parameters.N.Equals(generatedKeyParameters.Parameters.N))
{
return(new SimpleTestResult(false, "N does not match"));
}
if (!Arrays.AreEqual(keyParameters.Parameters.GetSeed(), generatedKeyParameters.Parameters.GetSeed()))
{
return(new SimpleTestResult(false, "Seed does not match"));
}
}
return(new SimpleTestResult(true, null));
}
public void EcGOST34102012256Test()
{
BigInteger r = new BigInteger("29700980915817952874371204983938256990422752107994319651632687982059210933395");
BigInteger s = new BigInteger("574973400270084654178925310019147038455227042649098563933718999175515839552");
BigInteger e = new BigInteger("20798893674476452017134061561508270130637142515379653289952617252661468872421");
byte[] kData = BigIntegers.AsUnsignedByteArray(new BigInteger("53854137677348463731403841147996619241504003434302020712960838528893196233395"));
SecureRandom k = new TestRandomBigInteger(kData);
BigInteger mod_p = new BigInteger("57896044618658097711785492504343953926634992332820282019728792003956564821041");
BigInteger mod_q = new BigInteger("57896044618658097711785492504343953927082934583725450622380973592137631069619");
ECCurve curve = new FpCurve(
mod_p,
new BigInteger("7"), // a
new BigInteger("43308876546767276905765904595650931995942111794451039583252968842033849580414"), // b
mod_q, BigInteger.One);
ECDomainParameters spec = new ECDomainParameters(curve,
curve.CreatePoint(
new BigInteger("2"), // x
new BigInteger("4018974056539037503335449422937059775635739389905545080690979365213431566280")), // y
mod_q, BigInteger.One);
ECPrivateKeyParameters privateKey = new ECPrivateKeyParameters(
new BigInteger("55441196065363246126355624130324183196576709222340016572108097750006097525544"), // d
spec);
ECPublicKeyParameters publicKey = new ECPublicKeyParameters(curve.CreatePoint(
new BigInteger("57520216126176808443631405023338071176630104906313632182896741342206604859403"), // x
new BigInteger("17614944419213781543809391949654080031942662045363639260709847859438286763994")), // y
spec);
ECGOST3410_2012Signer signer = new ECGOST3410_2012Signer();
signer.Init(true, new ParametersWithRandom(privateKey, k));
byte[] rev = e.ToByteArray();
byte[] message = new byte[rev.Length];
for (int i = 0; i != rev.Length; i++)
{
message[i] = rev[rev.Length - 1 - i];
}
BigInteger[] sig = signer.GenerateSignature(message);
signer.Init(false, publicKey);
if (!signer.VerifySignature(message, sig[0], sig[1]))
{
Fail("ECGOST3410 2012 verification failed");
}
if (!r.Equals(sig[0]))
{
Fail(
": r component wrong." + Environment.NewLine
+ " expecting: " + r + Environment.NewLine
+ " got : " + sig[0]);
}
if (!s.Equals(sig[1]))
{
Fail(
": s component wrong." + Environment.NewLine
+ " expecting: " + s + Environment.NewLine
+ " got : " + sig[1]);
}
// 256Bit
{
DerObjectIdentifier oid = RosstandartObjectIdentifiers.id_tc26_gost_3410_12_256_paramSetA;
ECNamedDomainParameters ecp = new ECNamedDomainParameters(oid, ECGost3410NamedCurves.GetByOid(oid));
ECGOST3410Parameters gostParams = new ECGOST3410Parameters(ecp, oid,
RosstandartObjectIdentifiers.id_tc26_gost_3411_12_256, null);
ECKeyGenerationParameters parameters = new ECKeyGenerationParameters(gostParams, new SecureRandom());
ECKeyPairGenerator engine = new ECKeyPairGenerator();
engine.Init(parameters);
AsymmetricCipherKeyPair pair = engine.GenerateKeyPair();
SignatureGost12Test("ECGOST3410-2012-256", 64, pair);
}
// 512Bit
{
DerObjectIdentifier oid = RosstandartObjectIdentifiers.id_tc26_gost_3410_12_512_paramSetA;
ECNamedDomainParameters ecp = new ECNamedDomainParameters(oid, ECGost3410NamedCurves.GetByOid(oid));
ECGOST3410Parameters gostParams = new ECGOST3410Parameters(ecp, oid,
RosstandartObjectIdentifiers.id_tc26_gost_3411_12_512, null);
ECKeyGenerationParameters parameters = new ECKeyGenerationParameters(gostParams, new SecureRandom());
ECKeyPairGenerator engine = new ECKeyPairGenerator();
engine.Init(parameters);
AsymmetricCipherKeyPair pair = engine.GenerateKeyPair();
SignatureGost12Test("ECGOST3410-2012-512", 128, pair);
}
}
