public static ECKeyPair LoadKeys (X9ECParameters curve, byte[] publicKeyData, byte[] privateKeyData) { ECKeyPair k = new ECKeyPair (); k.Curve = curve; if (privateKeyData != null) { k.priv = new BigInteger (privateKeyData); } k.pub = publicKeyData; return k; }
private void RandMult(string label, X9ECParameters spec) { ECCurve C = spec.Curve; ECPoint G = (ECPoint)spec.G; BigInteger n = spec.N; SecureRandom random = new SecureRandom(); random.SetSeed(DateTimeUtilities.CurrentUnixMs()); Console.WriteLine(label); int[] coords = ECCurve.GetAllCoordinateSystems(); for (int i = 0; i < coords.Length; ++i) { int coord = coords[i]; if (C.SupportsCoordinateSystem(coord)) { ECCurve c = C; ECPoint g = G; bool defaultCoord = (c.CoordinateSystem == coord); if (!defaultCoord) { c = C.Configure().SetCoordinateSystem(coord).Create(); g = c.ImportPoint(G); } double avgRate = RandMult(random, g, n); string coordName = COORD_NAMES[coord]; StringBuilder sb = new StringBuilder(); sb.Append(" "); sb.Append(defaultCoord ? '*' : ' '); sb.Append(coordName); for (int j = sb.Length; j < 30; ++j) { sb.Append(' '); } sb.Append(": "); sb.Append(avgRate); sb.Append(" mults/sec"); for (int j = sb.Length; j < 64; ++j) { sb.Append(' '); } sb.Append('('); sb.Append(1000.0 / avgRate); sb.Append(" millis/mult)"); Console.WriteLine(sb.ToString()); } } }
public static ECKeyPair Generate (X9ECParameters curve, bool compressed = true) { ECKeyPairGenerator generator = new ECKeyPairGenerator (); ECDomainParameters newDomain = new ECDomainParameters(curve.Curve, curve.G, curve.N); ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters (newDomain, secureRandom); generator.Init (keygenParams); var keyPair = generator.GenerateKeyPair (); ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keyPair.Private; ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keyPair.Public; ECKeyPair k = new ECKeyPair (); k.Domain = newDomain; k.Curve = curve; k.priv = privParams.D; k.pub = pubParams.Q.GetEncoded (compressed); return k; }
/** * return a X9ECParameters object representing the passed in named * curve. * * @param oid the object id of the curve requested * @return an X9ECParameters object or null if the curve is not available. */ public static X9ECParameters GetByOid(DerObjectIdentifier oid) { X9ECParameters ecP = X962NamedCurves.GetByOid(oid); if (ecP == null) { ecP = SecNamedCurves.GetByOid(oid); } if (ecP == null) { ecP = TeleTrusTNamedCurves.GetByOid(oid); } // NOTE: All the NIST curves are currently from SEC, so no point in redundant OID lookup return(ecP); }
public static X9ECParameters GetByOid(DerObjectIdentifier oid) { X9ECParameters byOid = X962NamedCurves.GetByOid(oid); if (byOid == null) { byOid = SecNamedCurves.GetByOid(oid); } if (byOid == null) { byOid = TeleTrusTNamedCurves.GetByOid(oid); } if (byOid == null) { byOid = AnssiNamedCurves.GetByOid(oid); } return(byOid); }
/** * return a X9ECParameters object representing the passed in named * curve. The routine returns null if the curve is not present. * * @param name the name of the curve requested * @return an X9ECParameters object or null if the curve is not available. */ public static X9ECParameters GetByName(string name) { X9ECParameters ecP = X962NamedCurves.GetByName(name); if (ecP == null) { ecP = SecNamedCurves.GetByName(name); } if (ecP == null) { ecP = TeleTrusTNamedCurves.GetByName(name); } if (ecP == null) { ecP = NistNamedCurves.GetByName(name); } return(ecP); }
public static X9ECParameters GetByName(string name) { X9ECParameters byName = X962NamedCurves.GetByName(name); if (byName == null) { byName = SecNamedCurves.GetByName(name); } if (byName == null) { byName = NistNamedCurves.GetByName(name); } if (byName == null) { byName = TeleTrusTNamedCurves.GetByName(name); } if (byName == null) { byName = AnssiNamedCurves.GetByName(name); } return(byName); }
/// <summary> /// Gets the curve from the name passed in, assuming it exists. /// </summary> /// <param name="curveName"></param> /// <returns>The curve requested</returns> public static X9ECParameters GetCurveFromName(string curveName) { Org.BouncyCastle.Asn1.X9.X9ECParameters ecp = Org.BouncyCastle.Asn1.Sec.SecNamedCurves.GetByName(curveName); if (ecp == null) { ecp = Org.BouncyCastle.Asn1.TeleTrust.TeleTrusTNamedCurves.GetByName(curveName); } if (ecp == null) { ecp = Org.BouncyCastle.Asn1.Nist.NistNamedCurves.GetByName(curveName); } if (ecp == null) { ecp = Org.BouncyCastle.Asn1.X9.X962NamedCurves.GetByName(curveName); } return(ecp); }
private void DoTestSumOfMultiplies(X9ECParameters x9) { ECPoint[] points = new ECPoint[Scale]; BigInteger[] scalars = new BigInteger[Scale]; for (int i = 0; i < Scale; ++i) { points[i] = GetRandomPoint(x9); scalars[i] = GetRandomScalar(x9); } ECPoint u = x9.Curve.Infinity; for (int i = 0; i < Scale; ++i) { u = u.Add(points[i].Multiply(scalars[i])); ECPoint v = ECAlgorithms.SumOfMultiplies(CopyPoints(points, i + 1), CopyScalars(scalars, i + 1)); ECPoint[] results = new ECPoint[] { u, v }; x9.Curve.NormalizeAll(results); AssertPointsEqual("ECAlgorithms.SumOfMultiplies is incorrect", results[0], results[1]); } }
private void DoTestSumOfTwoMultiplies(X9ECParameters x9) { ECPoint p = GetRandomPoint(x9); BigInteger a = GetRandomScalar(x9); for (int i = 0; i < Scale; ++i) { ECPoint q = GetRandomPoint(x9); BigInteger b = GetRandomScalar(x9); ECPoint u = p.Multiply(a).Add(q.Multiply(b)); ECPoint v = ECAlgorithms.ShamirsTrick(p, a, q, b); ECPoint w = ECAlgorithms.SumOfTwoMultiplies(p, a, q, b); ECPoint[] results = new ECPoint[] { u, v, w }; x9.Curve.NormalizeAll(results); AssertPointsEqual("ECAlgorithms.ShamirsTrick is incorrect", results[0], results[1]); AssertPointsEqual("ECAlgorithms.SumOfTwoMultiplies is incorrect", results[0], results[2]); p = q; a = b; } }
public X962Parameters( X9ECParameters ecParameters) { this._params = ecParameters.ToAsn1Object(); }
private void ImplAddSubtractMultiplyTwiceEncodingTestAllCoords(X9ECParameters x9ECParameters) { BigInteger n = x9ECParameters.N; ECPoint G = x9ECParameters.G; ECCurve C = x9ECParameters.Curve; int[] coords = ECCurve.GetAllCoordinateSystems(); for (int i = 0; i < coords.Length; ++i) { int coord = coords[i]; if (C.SupportsCoordinateSystem(coord)) { ECCurve c = C; ECPoint g = G; if (c.CoordinateSystem != coord) { c = C.Configure().SetCoordinateSystem(coord).Create(); g = c.ImportPoint(G); } // The generator is multiplied by random b to get random q BigInteger b = new BigInteger(n.BitLength, secRand); ECPoint q = g.Multiply(b).Normalize(); ImplAddSubtractMultiplyTwiceEncodingTest(c, q, n); ImplSqrtTest(c); } } }
public static AsymmetricKeyParameter CreateKey( SubjectPublicKeyInfo keyInfo) { AlgorithmIdentifier algID = keyInfo.AlgorithmID; DerObjectIdentifier algOid = algID.ObjectID; // TODO See RSAUtil.isRsaOid in Java build if (algOid.Equals(PkcsObjectIdentifiers.RsaEncryption) || algOid.Equals(X509ObjectIdentifiers.IdEARsa) || algOid.Equals(PkcsObjectIdentifiers.IdRsassaPss) || algOid.Equals(PkcsObjectIdentifiers.IdRsaesOaep)) { RsaPublicKeyStructure pubKey = RsaPublicKeyStructure.GetInstance( keyInfo.GetPublicKey()); return new RsaKeyParameters(false, pubKey.Modulus, pubKey.PublicExponent); } else if (algOid.Equals(X9ObjectIdentifiers.DHPublicNumber)) { Asn1Sequence seq = Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object()); DHPublicKey dhPublicKey = DHPublicKey.GetInstance(keyInfo.GetPublicKey()); BigInteger y = dhPublicKey.Y.Value; if (IsPkcsDHParam(seq)) return ReadPkcsDHParam(algOid, y, seq); DHDomainParameters dhParams = DHDomainParameters.GetInstance(seq); BigInteger p = dhParams.P.Value; BigInteger g = dhParams.G.Value; BigInteger q = dhParams.Q.Value; BigInteger j = null; if (dhParams.J != null) { j = dhParams.J.Value; } DHValidationParameters validation = null; DHValidationParms dhValidationParms = dhParams.ValidationParms; if (dhValidationParms != null) { byte[] seed = dhValidationParms.Seed.GetBytes(); BigInteger pgenCounter = dhValidationParms.PgenCounter.Value; // TODO Check pgenCounter size? validation = new DHValidationParameters(seed, pgenCounter.IntValue); } return new DHPublicKeyParameters(y, new DHParameters(p, g, q, j, validation)); } else if (algOid.Equals(PkcsObjectIdentifiers.DhKeyAgreement)) { Asn1Sequence seq = Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object()); DerInteger derY = (DerInteger) keyInfo.GetPublicKey(); return ReadPkcsDHParam(algOid, derY.Value, seq); } else if (algOid.Equals(OiwObjectIdentifiers.ElGamalAlgorithm)) { ElGamalParameter para = new ElGamalParameter( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); DerInteger derY = (DerInteger) keyInfo.GetPublicKey(); return new ElGamalPublicKeyParameters( derY.Value, new ElGamalParameters(para.P, para.G)); } else if (algOid.Equals(X9ObjectIdentifiers.IdDsa) || algOid.Equals(OiwObjectIdentifiers.DsaWithSha1)) { DerInteger derY = (DerInteger) keyInfo.GetPublicKey(); Asn1Encodable ae = algID.Parameters; DsaParameters parameters = null; if (ae != null) { DsaParameter para = DsaParameter.GetInstance(ae.ToAsn1Object()); parameters = new DsaParameters(para.P, para.Q, para.G); } return new DsaPublicKeyParameters(derY.Value, parameters); } else if (algOid.Equals(X9ObjectIdentifiers.IdECPublicKey)) { X962Parameters para = new X962Parameters(algID.Parameters.ToAsn1Object()); X9ECParameters x9; if (para.IsNamedCurve) { x9 = ECKeyPairGenerator.FindECCurveByOid((DerObjectIdentifier)para.Parameters); } else { x9 = new X9ECParameters((Asn1Sequence)para.Parameters); } Asn1OctetString key = new DerOctetString(keyInfo.PublicKeyData.GetBytes()); X9ECPoint derQ = new X9ECPoint(x9.Curve, key); ECPoint q = derQ.Point; if (para.IsNamedCurve) { return new ECPublicKeyParameters("EC", q, (DerObjectIdentifier)para.Parameters); } ECDomainParameters dParams = new ECDomainParameters(x9.Curve, x9.G, x9.N, x9.H, x9.GetSeed()); return new ECPublicKeyParameters(q, dParams); } else if (algOid.Equals(CryptoProObjectIdentifiers.GostR3410x2001)) { Gost3410PublicKeyAlgParameters gostParams = new Gost3410PublicKeyAlgParameters( (Asn1Sequence) algID.Parameters); Asn1OctetString key; try { key = (Asn1OctetString) keyInfo.GetPublicKey(); } catch (IOException) { throw new ArgumentException("invalid info structure in GOST3410 public key"); } byte[] keyEnc = key.GetOctets(); byte[] x = new byte[32]; byte[] y = new byte[32]; for (int i = 0; i != y.Length; i++) { x[i] = keyEnc[32 - 1 - i]; } for (int i = 0; i != x.Length; i++) { y[i] = keyEnc[64 - 1 - i]; } ECDomainParameters ecP = ECGost3410NamedCurves.GetByOid(gostParams.PublicKeyParamSet); if (ecP == null) return null; ECPoint q = ecP.Curve.CreatePoint(new BigInteger(1, x), new BigInteger(1, y)); return new ECPublicKeyParameters("ECGOST3410", q, gostParams.PublicKeyParamSet); } else if (algOid.Equals(CryptoProObjectIdentifiers.GostR3410x94)) { Gost3410PublicKeyAlgParameters algParams = new Gost3410PublicKeyAlgParameters( (Asn1Sequence) algID.Parameters); DerOctetString derY; try { derY = (DerOctetString) keyInfo.GetPublicKey(); } catch (IOException) { throw new ArgumentException("invalid info structure in GOST3410 public key"); } byte[] keyEnc = derY.GetOctets(); byte[] keyBytes = new byte[keyEnc.Length]; for (int i = 0; i != keyEnc.Length; i++) { keyBytes[i] = keyEnc[keyEnc.Length - 1 - i]; // was little endian } BigInteger y = new BigInteger(1, keyBytes); return new Gost3410PublicKeyParameters(y, algParams.PublicKeyParamSet); } else { throw new SecurityUtilityException("algorithm identifier in key not recognised: " + algOid); } }
public static AsymmetricKeyParameter CreateKey( SubjectPublicKeyInfo keyInfo) { AlgorithmIdentifier algID = keyInfo.AlgorithmID; DerObjectIdentifier algOid = algID.ObjectID; // TODO See RSAUtil.isRsaOid in Java build if (algOid.Equals(PkcsObjectIdentifiers.RsaEncryption) || algOid.Equals(X509ObjectIdentifiers.IdEARsa) || algOid.Equals(PkcsObjectIdentifiers.IdRsassaPss) || algOid.Equals(PkcsObjectIdentifiers.IdRsaesOaep)) { RsaPublicKeyStructure pubKey = RsaPublicKeyStructure.GetInstance( keyInfo.GetPublicKey()); return new RsaKeyParameters(false, pubKey.Modulus, pubKey.PublicExponent); } else if (algOid.Equals(PkcsObjectIdentifiers.DhKeyAgreement) || algOid.Equals(X9ObjectIdentifiers.DHPublicNumber)) { DHParameter para = new DHParameter( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); DerInteger derY = (DerInteger) keyInfo.GetPublicKey(); BigInteger lVal = para.L; int l = lVal == null ? 0 : lVal.IntValue; DHParameters dhParams = new DHParameters(para.P, para.G, null, l); return new DHPublicKeyParameters(derY.Value, dhParams); } else if (algOid.Equals(OiwObjectIdentifiers.ElGamalAlgorithm)) { ElGamalParameter para = new ElGamalParameter( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); DerInteger derY = (DerInteger) keyInfo.GetPublicKey(); return new ElGamalPublicKeyParameters( derY.Value, new ElGamalParameters(para.P, para.G)); } else if (algOid.Equals(X9ObjectIdentifiers.IdDsa) || algOid.Equals(OiwObjectIdentifiers.DsaWithSha1)) { DerInteger derY = (DerInteger) keyInfo.GetPublicKey(); Asn1Encodable ae = algID.Parameters; DsaParameters parameters = null; if (ae != null) { DsaParameter para = DsaParameter.GetInstance(ae.ToAsn1Object()); parameters = new DsaParameters(para.P, para.Q, para.G); } return new DsaPublicKeyParameters(derY.Value, parameters); } else if (algOid.Equals(X9ObjectIdentifiers.IdECPublicKey)) { X962Parameters para = new X962Parameters( algID.Parameters.ToAsn1Object()); X9ECParameters ecP; if (para.IsNamedCurve) { // TODO ECGost3410NamedCurves support (returns ECDomainParameters though) DerObjectIdentifier oid = (DerObjectIdentifier)para.Parameters; ecP = X962NamedCurves.GetByOid(oid); if (ecP == null) { ecP = SecNamedCurves.GetByOid(oid); if (ecP == null) { ecP = NistNamedCurves.GetByOid(oid); if (ecP == null) { ecP = TeleTrusTNamedCurves.GetByOid(oid); } } } } else { ecP = new X9ECParameters((Asn1Sequence)para.Parameters); } ECDomainParameters dParams = new ECDomainParameters( ecP.Curve, ecP.G, ecP.N, ecP.H, ecP.GetSeed()); DerBitString bits = keyInfo.PublicKeyData; byte[] data = bits.GetBytes(); Asn1OctetString key = new DerOctetString(data); X9ECPoint derQ = new X9ECPoint(dParams.Curve, key); return new ECPublicKeyParameters(derQ.Point, dParams); } else if (algOid.Equals(CryptoProObjectIdentifiers.GostR3410x2001)) { Gost3410PublicKeyAlgParameters gostParams = new Gost3410PublicKeyAlgParameters( (Asn1Sequence) algID.Parameters); Asn1OctetString key; try { key = (Asn1OctetString) keyInfo.GetPublicKey(); } catch (IOException) { throw new ArgumentException("invalid info structure in GOST3410 public key"); } byte[] keyEnc = key.GetOctets(); byte[] x = new byte[32]; byte[] y = new byte[32]; for (int i = 0; i != y.Length; i++) { x[i] = keyEnc[32 - 1 - i]; } for (int i = 0; i != x.Length; i++) { y[i] = keyEnc[64 - 1 - i]; } ECDomainParameters ecP = ECGost3410NamedCurves.GetByOid(gostParams.PublicKeyParamSet); if (ecP == null) return null; ECPoint q = ecP.Curve.CreatePoint(new BigInteger(1, x), new BigInteger(1, y), false); return new ECPublicKeyParameters(q, gostParams.PublicKeyParamSet); } else if (algOid.Equals(CryptoProObjectIdentifiers.GostR3410x94)) { Gost3410PublicKeyAlgParameters algParams = new Gost3410PublicKeyAlgParameters( (Asn1Sequence) algID.Parameters); DerOctetString derY; try { derY = (DerOctetString) keyInfo.GetPublicKey(); } catch (IOException) { throw new ArgumentException("invalid info structure in GOST3410 public key"); } byte[] keyEnc = derY.GetOctets(); byte[] keyBytes = new byte[keyEnc.Length]; for (int i = 0; i != keyEnc.Length; i++) { keyBytes[i] = keyEnc[keyEnc.Length - 1 - i]; // was little endian } BigInteger y = new BigInteger(1, keyBytes); return new Gost3410PublicKeyParameters(y, algParams.PublicKeyParamSet); } else { throw new SecurityUtilityException("algorithm identifier in key not recognised: " + algOid); } }
public static PrivateKeyInfo CreatePrivateKeyInfo( AsymmetricKeyParameter key) { if (key == null) throw new ArgumentNullException("key"); if (!key.IsPrivate) throw new ArgumentException("Public key passed - private key expected", "key"); if (key is ElGamalPrivateKeyParameters) { ElGamalPrivateKeyParameters _key = (ElGamalPrivateKeyParameters)key; PrivateKeyInfo info = new PrivateKeyInfo( new AlgorithmIdentifier( OiwObjectIdentifiers.ElGamalAlgorithm, new ElGamalParameter( _key.Parameters.P, _key.Parameters.G).ToAsn1Object()), new DerInteger(_key.X)); return info; } if (key is DsaPrivateKeyParameters) { DsaPrivateKeyParameters _key = (DsaPrivateKeyParameters)key; PrivateKeyInfo info = new PrivateKeyInfo( new AlgorithmIdentifier( X9ObjectIdentifiers.IdDsa, new DsaParameter( _key.Parameters.P, _key.Parameters.Q, _key.Parameters.G).ToAsn1Object()), new DerInteger(_key.X)); return info; } if (key is DHPrivateKeyParameters) { /* Process DH private key. The value for L was set to zero implicitly. This is the same action as found in JCEDHPrivateKey GetEncoded method. */ DHPrivateKeyParameters _key = (DHPrivateKeyParameters)key; DHParameter withNewL = new DHParameter( _key.Parameters.P, _key.Parameters.G, 0); PrivateKeyInfo info = new PrivateKeyInfo( new AlgorithmIdentifier( PkcsObjectIdentifiers.DhKeyAgreement, withNewL.ToAsn1Object()), new DerInteger(_key.X)); return info; } if (key is RsaKeyParameters) { if (key is RsaPrivateCrtKeyParameters) { RsaPrivateCrtKeyParameters _key = (RsaPrivateCrtKeyParameters)key; PrivateKeyInfo info = new PrivateKeyInfo( new AlgorithmIdentifier( PkcsObjectIdentifiers.RsaEncryption, DerNull.Instance), new RsaPrivateKeyStructure( _key.Modulus, _key.PublicExponent, _key.Exponent, _key.P, _key.Q, _key.DP, _key.DQ, _key.QInv).ToAsn1Object()); return info; } // TODO Check that we are not supposed to be able to encode these // RsaKeyParameters rkp = (RsaKeyParameters) key; } if (key is ECPrivateKeyParameters) { ECPrivateKeyParameters _key = (ECPrivateKeyParameters)key; if (_key.AlgorithmName == "ECGOST3410") { throw new NotImplementedException(); } else { X9ECParameters ecP = new X9ECParameters( _key.Parameters.Curve, _key.Parameters.G, _key.Parameters.N, _key.Parameters.H, _key.Parameters.GetSeed()); X962Parameters x962 = new X962Parameters(ecP); PrivateKeyInfo info = new PrivateKeyInfo( new AlgorithmIdentifier(X9ObjectIdentifiers.IdECPublicKey, x962.ToAsn1Object()), new ECPrivateKeyStructure(_key.D).ToAsn1Object()); return info; } } if (key is Gost3410PrivateKeyParameters) { Gost3410PrivateKeyParameters _key = (Gost3410PrivateKeyParameters)key; if (_key.PublicKeyParamSet == null) throw new NotImplementedException("Encoding only implemented for CryptoPro parameter sets"); // TODO Once it is efficiently implemented, use ToByteArrayUnsigned byte[] keyEnc = _key.X.ToByteArray(); byte[] keyBytes; if (keyEnc[0] == 0) { keyBytes = new byte[keyEnc.Length - 1]; } else { keyBytes = new byte[keyEnc.Length]; } for (int i = 0; i != keyBytes.Length; i++) { keyBytes[i] = keyEnc[keyEnc.Length - 1 - i]; // must be little endian } Gost3410PublicKeyAlgParameters algParams = new Gost3410PublicKeyAlgParameters( _key.PublicKeyParamSet, CryptoProObjectIdentifiers.GostR3411x94CryptoProParamSet, null); AlgorithmIdentifier algID = new AlgorithmIdentifier( CryptoProObjectIdentifiers.GostR3410x94, algParams.ToAsn1Object()); return new PrivateKeyInfo(algID, new DerOctetString(keyBytes)); } throw new ArgumentException("Class provided is not convertible: " + key.GetType().FullName); }
private void AddTestCurves(IList x9s, X9ECParameters x9) { ECCurve curve = x9.Curve; int[] coords = ECCurve.GetAllCoordinateSystems(); for (int i = 0; i < coords.Length; ++i) { int coord = coords[i]; if (curve.CoordinateSystem == coord) { x9s.Add(x9); } else if (curve.SupportsCoordinateSystem(coord)) { ECCurve c = curve.Configure().SetCoordinateSystem(coord).Create(); x9s.Add(new X9ECParameters(c, c.ImportPoint(x9.G), x9.N, x9.H)); } } }
public X962Parameters( X9ECParameters ecParameters) { this._params = ecParameters.ToAsn1Object(); }
/// <summary> /// Create a Subject Public Key Info object for a given public key. /// </summary> /// <param name="key">One of ElGammalPublicKeyParameters, DSAPublicKeyParameter, DHPublicKeyParameters, RsaKeyParameters or ECPublicKeyParameters</param> /// <returns>A subject public key info object.</returns> /// <exception cref="Exception">Throw exception if object provided is not one of the above.</exception> public static SubjectPublicKeyInfo CreateSubjectPublicKeyInfo( AsymmetricKeyParameter key) { if (key == null) throw new ArgumentNullException("key"); if (key.IsPrivate) throw new ArgumentException("Private key passed - public key expected.", "key"); if (key is ElGamalPublicKeyParameters) { ElGamalPublicKeyParameters _key = (ElGamalPublicKeyParameters)key; ElGamalParameters kp = _key.Parameters; SubjectPublicKeyInfo info = new SubjectPublicKeyInfo( new AlgorithmIdentifier( OiwObjectIdentifiers.ElGamalAlgorithm, new ElGamalParameter(kp.P, kp.G).ToAsn1Object()), new DerInteger(_key.Y)); return info; } if (key is DsaPublicKeyParameters) { DsaPublicKeyParameters _key = (DsaPublicKeyParameters) key; DsaParameters kp = _key.Parameters; Asn1Encodable ae = kp == null ? null : new DsaParameter(kp.P, kp.Q, kp.G).ToAsn1Object(); return new SubjectPublicKeyInfo( new AlgorithmIdentifier(X9ObjectIdentifiers.IdDsa, ae), new DerInteger(_key.Y)); } if (key is DHPublicKeyParameters) { DHPublicKeyParameters _key = (DHPublicKeyParameters) key; DHParameters kp = _key.Parameters; SubjectPublicKeyInfo info = new SubjectPublicKeyInfo( new AlgorithmIdentifier( X9ObjectIdentifiers.DHPublicNumber, new DHParameter(kp.P, kp.G, kp.L).ToAsn1Object()), new DerInteger(_key.Y)); return info; } // End of DH if (key is RsaKeyParameters) { RsaKeyParameters _key = (RsaKeyParameters) key; SubjectPublicKeyInfo info = new SubjectPublicKeyInfo( new AlgorithmIdentifier(PkcsObjectIdentifiers.RsaEncryption, DerNull.Instance), new RsaPublicKeyStructure(_key.Modulus, _key.Exponent).ToAsn1Object()); return info; } // End of RSA. if (key is ECPublicKeyParameters) { ECPublicKeyParameters _key = (ECPublicKeyParameters) key; if (_key.AlgorithmName == "ECGOST3410") { if (_key.PublicKeyParamSet == null) throw Platform.CreateNotImplementedException("Not a CryptoPro parameter set"); ECPoint q = _key.Q; BigInteger bX = q.X.ToBigInteger(); BigInteger bY = q.Y.ToBigInteger(); byte[] encKey = new byte[64]; ExtractBytes(encKey, 0, bX); ExtractBytes(encKey, 32, bY); Gost3410PublicKeyAlgParameters gostParams = new Gost3410PublicKeyAlgParameters( _key.PublicKeyParamSet, CryptoProObjectIdentifiers.GostR3411x94CryptoProParamSet); AlgorithmIdentifier algID = new AlgorithmIdentifier( CryptoProObjectIdentifiers.GostR3410x2001, gostParams.ToAsn1Object()); return new SubjectPublicKeyInfo(algID, new DerOctetString(encKey)); } else { ECDomainParameters kp = _key.Parameters; X9ECParameters ecP = new X9ECParameters(kp.Curve, kp.G, kp.N, kp.H, kp.GetSeed()); X962Parameters x962 = new X962Parameters(ecP); Asn1OctetString p = (Asn1OctetString)(new X9ECPoint(_key.Q).ToAsn1Object()); AlgorithmIdentifier algID = new AlgorithmIdentifier( X9ObjectIdentifiers.IdECPublicKey, x962.ToAsn1Object()); return new SubjectPublicKeyInfo(algID, p.GetOctets()); } } // End of EC if (key is Gost3410PublicKeyParameters) { Gost3410PublicKeyParameters _key = (Gost3410PublicKeyParameters) key; if (_key.PublicKeyParamSet == null) throw Platform.CreateNotImplementedException("Not a CryptoPro parameter set"); byte[] keyEnc = _key.Y.ToByteArrayUnsigned(); byte[] keyBytes = new byte[keyEnc.Length]; for (int i = 0; i != keyBytes.Length; i++) { keyBytes[i] = keyEnc[keyEnc.Length - 1 - i]; // must be little endian } Gost3410PublicKeyAlgParameters algParams = new Gost3410PublicKeyAlgParameters( _key.PublicKeyParamSet, CryptoProObjectIdentifiers.GostR3411x94CryptoProParamSet); AlgorithmIdentifier algID = new AlgorithmIdentifier( CryptoProObjectIdentifiers.GostR3410x94, algParams.ToAsn1Object()); return new SubjectPublicKeyInfo(algID, new DerOctetString(keyBytes)); } throw new ArgumentException("Class provided no convertible: " + key.GetType().FullName); }
private bool VerifyEcDsa(IDigest digest, X9ECParameters curveParameter, byte[] buffer, int length, byte[] signature) { int digestSize = digest.GetDigestSize(); ECDomainParameters dParams = new ECDomainParameters( curveParameter.Curve, curveParameter.G, curveParameter.N, curveParameter.H, curveParameter.GetSeed()); ECPoint q = dParams.Curve.CreatePoint(new BigInteger(1, PublicKey, 0, digestSize), new BigInteger(1, PublicKey, digestSize, digestSize), false); ECPublicKeyParameters parameters = new ECPublicKeyParameters(q, dParams); var signer = new ECDsaSigner(); signer.Init(false, parameters); digest.BlockUpdate(buffer, 0, length); byte[] hash = new byte[digest.GetDigestSize()]; digest.DoFinal(hash, 0); return signer.VerifySignature(hash, new BigInteger(1, signature, 0, digestSize), new BigInteger(1, signature, digestSize, digestSize)); }
private ECPoint GetRandomPoint(X9ECParameters x9) { return x9.G.Multiply(GetRandomScalar(x9)); }
public static PrivateKeyInfo CreatePrivateKeyInfo( AsymmetricKeyParameter key) { if (key == null) throw new ArgumentNullException("key"); if (!key.IsPrivate) throw new ArgumentException("Public key passed - private key expected", "key"); if (key is ElGamalPrivateKeyParameters) { ElGamalPrivateKeyParameters _key = (ElGamalPrivateKeyParameters)key; return new PrivateKeyInfo( new AlgorithmIdentifier( OiwObjectIdentifiers.ElGamalAlgorithm, new ElGamalParameter( _key.Parameters.P, _key.Parameters.G).ToAsn1Object()), new DerInteger(_key.X)); } if (key is DsaPrivateKeyParameters) { DsaPrivateKeyParameters _key = (DsaPrivateKeyParameters)key; return new PrivateKeyInfo( new AlgorithmIdentifier( X9ObjectIdentifiers.IdDsa, new DsaParameter( _key.Parameters.P, _key.Parameters.Q, _key.Parameters.G).ToAsn1Object()), new DerInteger(_key.X)); } if (key is DHPrivateKeyParameters) { DHPrivateKeyParameters _key = (DHPrivateKeyParameters)key; DHParameter p = new DHParameter( _key.Parameters.P, _key.Parameters.G, _key.Parameters.L); return new PrivateKeyInfo( new AlgorithmIdentifier(_key.AlgorithmOid, p.ToAsn1Object()), new DerInteger(_key.X)); } if (key is RsaKeyParameters) { AlgorithmIdentifier algID = new AlgorithmIdentifier( PkcsObjectIdentifiers.RsaEncryption, DerNull.Instance); RsaPrivateKeyStructure keyStruct; if (key is RsaPrivateCrtKeyParameters) { RsaPrivateCrtKeyParameters _key = (RsaPrivateCrtKeyParameters)key; keyStruct = new RsaPrivateKeyStructure( _key.Modulus, _key.PublicExponent, _key.Exponent, _key.P, _key.Q, _key.DP, _key.DQ, _key.QInv); } else { RsaKeyParameters _key = (RsaKeyParameters) key; keyStruct = new RsaPrivateKeyStructure( _key.Modulus, BigInteger.Zero, _key.Exponent, BigInteger.Zero, BigInteger.Zero, BigInteger.Zero, BigInteger.Zero, BigInteger.Zero); } return new PrivateKeyInfo(algID, keyStruct.ToAsn1Object()); } if (key is ECPrivateKeyParameters) { ECPrivateKeyParameters _key = (ECPrivateKeyParameters)key; AlgorithmIdentifier algID; ECPrivateKeyStructure ec; if (_key.AlgorithmName == "ECGOST3410") { if (_key.PublicKeyParamSet == null) throw Platform.CreateNotImplementedException("Not a CryptoPro parameter set"); Gost3410PublicKeyAlgParameters gostParams = new Gost3410PublicKeyAlgParameters( _key.PublicKeyParamSet, CryptoProObjectIdentifiers.GostR3411x94CryptoProParamSet); algID = new AlgorithmIdentifier( CryptoProObjectIdentifiers.GostR3410x2001, gostParams.ToAsn1Object()); // TODO Do we need to pass any parameters here? ec = new ECPrivateKeyStructure(_key.D); } else { X962Parameters x962; if (_key.PublicKeyParamSet == null) { ECDomainParameters kp = _key.Parameters; X9ECParameters ecP = new X9ECParameters(kp.Curve, kp.G, kp.N, kp.H, kp.GetSeed()); x962 = new X962Parameters(ecP); } else { x962 = new X962Parameters(_key.PublicKeyParamSet); } Asn1Object x962Object = x962.ToAsn1Object(); // TODO Possible to pass the publicKey bitstring here? ec = new ECPrivateKeyStructure(_key.D, x962Object); algID = new AlgorithmIdentifier(X9ObjectIdentifiers.IdECPublicKey, x962Object); } return new PrivateKeyInfo(algID, ec.ToAsn1Object()); } if (key is Gost3410PrivateKeyParameters) { Gost3410PrivateKeyParameters _key = (Gost3410PrivateKeyParameters)key; if (_key.PublicKeyParamSet == null) throw Platform.CreateNotImplementedException("Not a CryptoPro parameter set"); byte[] keyEnc = _key.X.ToByteArrayUnsigned(); byte[] keyBytes = new byte[keyEnc.Length]; for (int i = 0; i != keyBytes.Length; i++) { keyBytes[i] = keyEnc[keyEnc.Length - 1 - i]; // must be little endian } Gost3410PublicKeyAlgParameters algParams = new Gost3410PublicKeyAlgParameters( _key.PublicKeyParamSet, CryptoProObjectIdentifiers.GostR3411x94CryptoProParamSet, null); AlgorithmIdentifier algID = new AlgorithmIdentifier( CryptoProObjectIdentifiers.GostR3410x94, algParams.ToAsn1Object()); return new PrivateKeyInfo(algID, new DerOctetString(keyBytes)); } throw new ArgumentException("Class provided is not convertible: " + key.GetType().FullName); }
public static AsymmetricKeyParameter CreateKey( SubjectPublicKeyInfo keyInfo) { AlgorithmIdentifier algID = keyInfo.AlgorithmID; if (algID.ObjectID.Equals(PkcsObjectIdentifiers.RsaEncryption) || algID.ObjectID.Equals(X509ObjectIdentifiers.IdEARsa)) { RsaPublicKeyStructure pubKey = RsaPublicKeyStructure.GetInstance(keyInfo.GetPublicKey()); return new RsaKeyParameters(false, pubKey.Modulus, pubKey.PublicExponent); } else if (algID.ObjectID.Equals(PkcsObjectIdentifiers.DhKeyAgreement) || algID.ObjectID.Equals(X9ObjectIdentifiers.DHPublicNumber)) { DHParameter para = new DHParameter((Asn1Sequence)keyInfo.AlgorithmID.Parameters); DerInteger derY = (DerInteger)keyInfo.GetPublicKey(); return new DHPublicKeyParameters(derY.Value, new DHParameters(para.P, para.G)); } else if (algID.ObjectID.Equals(OiwObjectIdentifiers.ElGamalAlgorithm)) { ElGamalParameter para = new ElGamalParameter((Asn1Sequence)keyInfo.AlgorithmID.Parameters); DerInteger derY = (DerInteger)keyInfo.GetPublicKey(); return new ElGamalPublicKeyParameters(derY.Value, new ElGamalParameters(para.P, para.G)); } else if (algID.ObjectID.Equals(X9ObjectIdentifiers.IdDsa) || algID.ObjectID.Equals(OiwObjectIdentifiers.DsaWithSha1)) { DsaParameter para = DsaParameter.GetInstance(keyInfo.AlgorithmID.Parameters); DerInteger derY = (DerInteger)keyInfo.GetPublicKey(); return new DsaPublicKeyParameters(derY.Value, new DsaParameters(para.P, para.Q, para.G)); } else if (algID.ObjectID.Equals(X9ObjectIdentifiers.IdECPublicKey)) { X962Parameters para = new X962Parameters((Asn1Object)keyInfo.AlgorithmID.Parameters); ECDomainParameters dParams = null; if (para.IsNamedCurve) { DerObjectIdentifier oid = (DerObjectIdentifier)para.Parameters; X9ECParameters ecP = X962NamedCurves.GetByOid(oid); if (ecP == null) { ecP = SecNamedCurves.GetByOid(oid); if (ecP == null) { ecP = NistNamedCurves.GetByOid(oid); } } dParams = new ECDomainParameters( ecP.Curve, ecP.G, ecP.N, ecP.H, ecP.GetSeed()); } else { X9ECParameters ecP = new X9ECParameters((Asn1Sequence)para.Parameters.ToAsn1Object()); dParams = new ECDomainParameters( ecP.Curve, ecP.G, ecP.N, ecP.H, ecP.GetSeed()); } DerBitString bits = keyInfo.PublicKeyData; byte[] data = bits.GetBytes(); Asn1OctetString key = new DerOctetString(data); X9ECPoint derQ = new X9ECPoint(dParams.Curve, key); return new ECPublicKeyParameters(derQ.Point, dParams); } else if (algID.ObjectID.Equals(CryptoProObjectIdentifiers.GostR3410x2001)) { Gost3410PublicKeyAlgParameters gostParams = new Gost3410PublicKeyAlgParameters( (Asn1Sequence) algID.Parameters); Asn1OctetString key; try { key = (Asn1OctetString) keyInfo.GetPublicKey(); } catch (IOException) { throw new ArgumentException("invalid info structure in GOST3410 public key"); } byte[] keyEnc = key.GetOctets(); byte[] x = new byte[32]; byte[] y = new byte[32]; for (int i = 0; i != y.Length; i++) { x[i] = keyEnc[32 - 1 - i]; } for (int i = 0; i != x.Length; i++) { y[i] = keyEnc[64 - 1 - i]; } ECDomainParameters ecP = ECGost3410NamedCurves.GetByOid(gostParams.PublicKeyParamSet); if (ecP == null) return null; ECCurve curve = ecP.Curve; ECPoint q; if (curve is FpCurve) { FpCurve curveFp = (FpCurve) curve; q = new FpPoint( curveFp, new FpFieldElement(curveFp.Q, new BigInteger(1, x)), new FpFieldElement(curveFp.Q, new BigInteger(1, y))); } else { F2mCurve curveF2m = (F2mCurve) curve; q = new F2mPoint( curveF2m, new F2mFieldElement(curveF2m.M, curveF2m.K1, curveF2m.K2, curveF2m.K3, new BigInteger(1, x)), new F2mFieldElement(curveF2m.M, curveF2m.K1, curveF2m.K2, curveF2m.K3, new BigInteger(1, y)), false); } return new ECPublicKeyParameters(q, gostParams.PublicKeyParamSet); } else if (algID.ObjectID.Equals(CryptoProObjectIdentifiers.GostR3410x94)) { Gost3410PublicKeyAlgParameters algParams = new Gost3410PublicKeyAlgParameters( (Asn1Sequence) algID.Parameters); DerOctetString derY; try { derY = (DerOctetString) keyInfo.GetPublicKey(); } catch (IOException) { throw new ArgumentException("invalid info structure in GOST3410 public key"); } byte[] keyEnc = derY.GetOctets(); byte[] keyBytes = new byte[keyEnc.Length]; for (int i = 0; i != keyEnc.Length; i++) { keyBytes[i] = keyEnc[keyEnc.Length - 1 - i]; // was little endian } BigInteger y = new BigInteger(1, keyBytes); return new Gost3410PublicKeyParameters(y, algParams.PublicKeyParamSet); } else { throw new SecurityUtilityException("algorithm identifier in key not recognised: " + algID.ObjectID); } }
public static AsymmetricKeyParameter CreateKey( PrivateKeyInfo keyInfo) { AlgorithmIdentifier algID = keyInfo.AlgorithmID; DerObjectIdentifier algOid = algID.ObjectID; // TODO See RSAUtil.isRsaOid in Java build if (algOid.Equals(PkcsObjectIdentifiers.RsaEncryption) || algOid.Equals(X509ObjectIdentifiers.IdEARsa) || algOid.Equals(PkcsObjectIdentifiers.IdRsassaPss) || algOid.Equals(PkcsObjectIdentifiers.IdRsaesOaep)) { RsaPrivateKeyStructure keyStructure = new RsaPrivateKeyStructure( Asn1Sequence.GetInstance(keyInfo.PrivateKey)); return new RsaPrivateCrtKeyParameters( keyStructure.Modulus, keyStructure.PublicExponent, keyStructure.PrivateExponent, keyStructure.Prime1, keyStructure.Prime2, keyStructure.Exponent1, keyStructure.Exponent2, keyStructure.Coefficient); } else if (algOid.Equals(PkcsObjectIdentifiers.DhKeyAgreement)) { DHParameter para = new DHParameter( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); DerInteger derX = (DerInteger)keyInfo.PrivateKey; BigInteger lVal = para.L; int l = lVal == null ? 0 : lVal.IntValue; DHParameters dhParams = new DHParameters(para.P, para.G, null, l); return new DHPrivateKeyParameters(derX.Value, dhParams); } else if (algOid.Equals(OiwObjectIdentifiers.ElGamalAlgorithm)) { ElGamalParameter para = new ElGamalParameter( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); DerInteger derX = (DerInteger)keyInfo.PrivateKey; return new ElGamalPrivateKeyParameters( derX.Value, new ElGamalParameters(para.P, para.G)); } else if (algOid.Equals(X9ObjectIdentifiers.IdDsa)) { DerInteger derX = (DerInteger) keyInfo.PrivateKey; Asn1Encodable ae = algID.Parameters; DsaParameters parameters = null; if (ae != null) { DsaParameter para = DsaParameter.GetInstance(ae.ToAsn1Object()); parameters = new DsaParameters(para.P, para.Q, para.G); } return new DsaPrivateKeyParameters(derX.Value, parameters); } else if (algOid.Equals(X9ObjectIdentifiers.IdECPublicKey)) { X962Parameters para = new X962Parameters(algID.Parameters.ToAsn1Object()); X9ECParameters ecP; if (para.IsNamedCurve) { // TODO ECGost3410NamedCurves support (returns ECDomainParameters though) DerObjectIdentifier oid = (DerObjectIdentifier) para.Parameters; ecP = X962NamedCurves.GetByOid(oid); if (ecP == null) { ecP = SecNamedCurves.GetByOid(oid); if (ecP == null) { ecP = NistNamedCurves.GetByOid(oid); if (ecP == null) { ecP = TeleTrusTNamedCurves.GetByOid(oid); } } } } else { ecP = new X9ECParameters((Asn1Sequence) para.Parameters); } ECDomainParameters dParams = new ECDomainParameters( ecP.Curve, ecP.G, ecP.N, ecP.H, ecP.GetSeed()); ECPrivateKeyStructure ec = new ECPrivateKeyStructure( Asn1Sequence.GetInstance(keyInfo.PrivateKey)); return new ECPrivateKeyParameters(ec.GetKey(), dParams); } else if (algOid.Equals(CryptoProObjectIdentifiers.GostR3410x2001)) { Gost3410PublicKeyAlgParameters gostParams = new Gost3410PublicKeyAlgParameters( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); ECPrivateKeyStructure ec = new ECPrivateKeyStructure( Asn1Sequence.GetInstance(keyInfo.PrivateKey)); ECDomainParameters ecP = ECGost3410NamedCurves.GetByOid(gostParams.PublicKeyParamSet); if (ecP == null) return null; return new ECPrivateKeyParameters(ec.GetKey(), gostParams.PublicKeyParamSet); } else if (algOid.Equals(CryptoProObjectIdentifiers.GostR3410x94)) { Gost3410PublicKeyAlgParameters gostParams = new Gost3410PublicKeyAlgParameters( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); DerOctetString derX = (DerOctetString) keyInfo.PrivateKey; byte[] keyEnc = derX.GetOctets(); byte[] keyBytes = new byte[keyEnc.Length]; for (int i = 0; i != keyEnc.Length; i++) { keyBytes[i] = keyEnc[keyEnc.Length - 1 - i]; // was little endian } BigInteger x = new BigInteger(1, keyBytes); return new Gost3410PrivateKeyParameters(x, gostParams.PublicKeyParamSet); } else { throw new SecurityUtilityException("algorithm identifier in key not recognised"); } }
public static AsymmetricKeyParameter CreateKey( PrivateKeyInfo keyInfo) { AlgorithmIdentifier algID = keyInfo.PrivateKeyAlgorithm; DerObjectIdentifier algOid = algID.ObjectID; // TODO See RSAUtil.isRsaOid in Java build if (algOid.Equals(PkcsObjectIdentifiers.RsaEncryption) || algOid.Equals(X509ObjectIdentifiers.IdEARsa) || algOid.Equals(PkcsObjectIdentifiers.IdRsassaPss) || algOid.Equals(PkcsObjectIdentifiers.IdRsaesOaep)) { RsaPrivateKeyStructure keyStructure = RsaPrivateKeyStructure.GetInstance(keyInfo.ParsePrivateKey()); return new RsaPrivateCrtKeyParameters( keyStructure.Modulus, keyStructure.PublicExponent, keyStructure.PrivateExponent, keyStructure.Prime1, keyStructure.Prime2, keyStructure.Exponent1, keyStructure.Exponent2, keyStructure.Coefficient); } // TODO? // else if (algOid.Equals(X9ObjectIdentifiers.DHPublicNumber)) else if (algOid.Equals(PkcsObjectIdentifiers.DhKeyAgreement)) { DHParameter para = new DHParameter( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); DerInteger derX = (DerInteger)keyInfo.ParsePrivateKey(); BigInteger lVal = para.L; int l = lVal == null ? 0 : lVal.IntValue; DHParameters dhParams = new DHParameters(para.P, para.G, null, l); return new DHPrivateKeyParameters(derX.Value, dhParams, algOid); } else if (algOid.Equals(OiwObjectIdentifiers.ElGamalAlgorithm)) { ElGamalParameter para = new ElGamalParameter( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); DerInteger derX = (DerInteger)keyInfo.ParsePrivateKey(); return new ElGamalPrivateKeyParameters( derX.Value, new ElGamalParameters(para.P, para.G)); } else if (algOid.Equals(X9ObjectIdentifiers.IdDsa)) { DerInteger derX = (DerInteger)keyInfo.ParsePrivateKey(); Asn1Encodable ae = algID.Parameters; DsaParameters parameters = null; if (ae != null) { DsaParameter para = DsaParameter.GetInstance(ae.ToAsn1Object()); parameters = new DsaParameters(para.P, para.Q, para.G); } return new DsaPrivateKeyParameters(derX.Value, parameters); } else if (algOid.Equals(X9ObjectIdentifiers.IdECPublicKey)) { X962Parameters para = new X962Parameters(algID.Parameters.ToAsn1Object()); X9ECParameters x9; if (para.IsNamedCurve) { x9 = ECKeyPairGenerator.FindECCurveByOid((DerObjectIdentifier)para.Parameters); } else { x9 = new X9ECParameters((Asn1Sequence)para.Parameters); } ECPrivateKeyStructure ec = new ECPrivateKeyStructure( Asn1Sequence.GetInstance(keyInfo.ParsePrivateKey())); BigInteger d = ec.GetKey(); if (para.IsNamedCurve) { return new ECPrivateKeyParameters("EC", d, (DerObjectIdentifier)para.Parameters); } ECDomainParameters dParams = new ECDomainParameters(x9.Curve, x9.G, x9.N, x9.H, x9.GetSeed()); return new ECPrivateKeyParameters(d, dParams); } else if (algOid.Equals(CryptoProObjectIdentifiers.GostR3410x2001)) { Gost3410PublicKeyAlgParameters gostParams = new Gost3410PublicKeyAlgParameters( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); Asn1Object privKey = keyInfo.ParsePrivateKey(); ECPrivateKeyStructure ec; if (privKey is DerInteger) { // TODO Do we need to pass any parameters here? ec = new ECPrivateKeyStructure(((DerInteger)privKey).Value); } else { ec = ECPrivateKeyStructure.GetInstance(privKey); } ECDomainParameters ecP = ECGost3410NamedCurves.GetByOid(gostParams.PublicKeyParamSet); if (ecP == null) throw new ArgumentException("Unrecognized curve OID for GostR3410x2001 private key"); return new ECPrivateKeyParameters("ECGOST3410", ec.GetKey(), gostParams.PublicKeyParamSet); } else if (algOid.Equals(CryptoProObjectIdentifiers.GostR3410x94)) { Gost3410PublicKeyAlgParameters gostParams = new Gost3410PublicKeyAlgParameters( Asn1Sequence.GetInstance(algID.Parameters.ToAsn1Object())); DerOctetString derX = (DerOctetString)keyInfo.ParsePrivateKey(); BigInteger x = new BigInteger(1, Arrays.Reverse(derX.GetOctets())); return new Gost3410PrivateKeyParameters(x, gostParams.PublicKeyParamSet); } else { throw new SecurityUtilityException("algorithm identifier in key not recognised"); } }
public static AsymmetricKeyParameter CreateKey( PrivateKeyInfo keyInfo) { AlgorithmIdentifier algID = keyInfo.AlgorithmID; if (algID.ObjectID.Equals(PkcsObjectIdentifiers.RsaEncryption)) { RsaPrivateKeyStructure keyStructure = new RsaPrivateKeyStructure( (Asn1Sequence)keyInfo.PrivateKey); return (new RsaPrivateCrtKeyParameters( keyStructure.Modulus, keyStructure.PublicExponent, keyStructure.PrivateExponent, keyStructure.Prime1, keyStructure.Prime2, keyStructure.Exponent1, keyStructure.Exponent2, keyStructure.Coefficient)); } else if (algID.ObjectID.Equals(PkcsObjectIdentifiers.DhKeyAgreement)) { DHParameter para = new DHParameter((Asn1Sequence)algID.Parameters); DerInteger derX = (DerInteger)keyInfo.PrivateKey; return new DHPrivateKeyParameters(derX.Value, new DHParameters(para.P, para.G)); } else if (algID.ObjectID.Equals(OiwObjectIdentifiers.ElGamalAlgorithm)) { ElGamalParameter para = new ElGamalParameter((Asn1Sequence)algID.Parameters); DerInteger derX = (DerInteger)keyInfo.PrivateKey; return new ElGamalPrivateKeyParameters(derX.Value, new ElGamalParameters(para.P, para.G)); } else if (algID.ObjectID.Equals(X9ObjectIdentifiers.IdDsa)) { DsaParameter para = DsaParameter.GetInstance(algID.Parameters); DerInteger derX = (DerInteger) keyInfo.PrivateKey; return new DsaPrivateKeyParameters(derX.Value, new DsaParameters(para.P, para.Q, para.G)); } else if (algID.ObjectID.Equals(X9ObjectIdentifiers.IdECPublicKey)) { X962Parameters para = new X962Parameters((Asn1Object)algID.Parameters); ECDomainParameters dParams = null; if (para.IsNamedCurve) { DerObjectIdentifier oid = (DerObjectIdentifier) para.Parameters; X9ECParameters ecP = X962NamedCurves.GetByOid(oid); if (ecP == null) { ecP = SecNamedCurves.GetByOid(oid); if (ecP == null) { ecP = NistNamedCurves.GetByOid(oid); } } dParams = new ECDomainParameters( ecP.Curve, ecP.G, ecP.N, ecP.H, ecP.GetSeed()); } else { X9ECParameters ecP = new X9ECParameters( (Asn1Sequence) para.Parameters); dParams = new ECDomainParameters( ecP.Curve, ecP.G, ecP.N, ecP.H, ecP.GetSeed()); } ECPrivateKeyStructure ec = new ECPrivateKeyStructure((Asn1Sequence)keyInfo.PrivateKey); return new ECPrivateKeyParameters(ec.GetKey(), dParams); } else if (algID.ObjectID.Equals(CryptoProObjectIdentifiers.GostR3410x2001)) { throw new NotImplementedException(); } else if (algID.ObjectID.Equals(CryptoProObjectIdentifiers.GostR3410x94)) { Gost3410PublicKeyAlgParameters algParams = new Gost3410PublicKeyAlgParameters( (Asn1Sequence) algID.Parameters); DerOctetString derX = (DerOctetString) keyInfo.PrivateKey; byte[] keyEnc = derX.GetOctets(); byte[] keyBytes = new byte[keyEnc.Length]; for (int i = 0; i != keyEnc.Length; i++) { keyBytes[i] = keyEnc[keyEnc.Length - 1 - i]; // was little endian } BigInteger x = new BigInteger(1, keyBytes); return new Gost3410PrivateKeyParameters(x, algParams.PublicKeyParamSet); } else { throw new SecurityUtilityException("algorithm identifier in key not recognised"); } }
private BigInteger GetRandomScalar(X9ECParameters x9) { return new BigInteger(x9.N.BitLength, Random); }
private void doTestParams( byte[] ecParameterEncoded, bool compress) { // string keyStorePass = "******"; Asn1Sequence seq = (Asn1Sequence) Asn1Object.FromByteArray(ecParameterEncoded); X9ECParameters x9 = new X9ECParameters(seq); AsymmetricCipherKeyPair kp = null; bool success = false; while (!success) { IAsymmetricCipherKeyPairGenerator kpg = GeneratorUtilities.GetKeyPairGenerator("ECDSA"); // kpg.Init(new ECParameterSpec(x9.Curve, x9.G, x9.N, x9.H, x9.GetSeed())); ECDomainParameters ecParams = new ECDomainParameters( x9.Curve, x9.G, x9.N, x9.H, x9.GetSeed()); kpg.Init(new ECKeyGenerationParameters(ecParams, new SecureRandom())); kp = kpg.GenerateKeyPair(); // The very old Problem... we need a certificate chain to // save a private key... ECPublicKeyParameters pubKey = (ECPublicKeyParameters) kp.Public; if (!compress) { //pubKey.setPointFormat("UNCOMPRESSED"); pubKey = SetPublicUncompressed(pubKey); } byte[] x = pubKey.Q.AffineXCoord.ToBigInteger().ToByteArrayUnsigned(); byte[] y = pubKey.Q.AffineYCoord.ToBigInteger().ToByteArrayUnsigned(); if (x.Length == y.Length) { success = true; } } // The very old Problem... we need a certificate chain to // save a private key... X509CertificateEntry[] chain = new X509CertificateEntry[] { new X509CertificateEntry(GenerateSelfSignedSoftECCert(kp, compress)) }; // KeyStore keyStore = KeyStore.getInstance("BKS"); // keyStore.load(null, keyStorePass.ToCharArray()); Pkcs12Store keyStore = new Pkcs12StoreBuilder().Build(); keyStore.SetCertificateEntry("ECCert", chain[0]); ECPrivateKeyParameters privateECKey = (ECPrivateKeyParameters) kp.Private; keyStore.SetKeyEntry("ECPrivKey", new AsymmetricKeyEntry(privateECKey), chain); // Test ec sign / verify ECPublicKeyParameters pub = (ECPublicKeyParameters) kp.Public; // string oldPrivateKey = new string(Hex.encode(privateECKey.getEncoded())); byte[] oldPrivateKeyBytes = PrivateKeyInfoFactory.CreatePrivateKeyInfo(privateECKey).GetDerEncoded(); string oldPrivateKey = Hex.ToHexString(oldPrivateKeyBytes); // string oldPublicKey = new string(Hex.encode(pub.getEncoded())); byte[] oldPublicKeyBytes = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(pub).GetDerEncoded(); string oldPublicKey = Hex.ToHexString(oldPublicKeyBytes); ECPrivateKeyParameters newKey = (ECPrivateKeyParameters) keyStore.GetKey("ECPrivKey").Key; ECPublicKeyParameters newPubKey = (ECPublicKeyParameters) keyStore.GetCertificate("ECCert").Certificate.GetPublicKey(); if (!compress) { // TODO Private key compression? //newKey.setPointFormat("UNCOMPRESSED"); //newPubKey.setPointFormat("UNCOMPRESSED"); newPubKey = SetPublicUncompressed(newPubKey); } // string newPrivateKey = new string(Hex.encode(newKey.getEncoded())); byte[] newPrivateKeyBytes = PrivateKeyInfoFactory.CreatePrivateKeyInfo(newKey).GetDerEncoded(); string newPrivateKey = Hex.ToHexString(newPrivateKeyBytes); // string newPublicKey = new string(Hex.encode(newPubKey.getEncoded())); byte[] newPublicKeyBytes = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(newPubKey).GetDerEncoded(); string newPublicKey = Hex.ToHexString(newPublicKeyBytes); if (!oldPrivateKey.Equals(newPrivateKey)) // if (!privateECKey.Equals(newKey)) { Fail("failed private key comparison"); } if (!oldPublicKey.Equals(newPublicKey)) // if (!pub.Equals(newPubKey)) { Fail("failed public key comparison"); } }
public ScriptEngine() { this.curve = SecNamedCurves.GetByName("secp256k1"); this.domainParameters = new ECDomainParameters(curve.Curve, curve.G, curve.N, curve.H, curve.GetSeed()); }