diff options
Diffstat (limited to 'crypto/src/x509')
| -rw-r--r-- | crypto/src/x509/SubjectPublicKeyInfoFactory.cs | 240 |
1 files changed, 120 insertions, 120 deletions
diff --git a/crypto/src/x509/SubjectPublicKeyInfoFactory.cs b/crypto/src/x509/SubjectPublicKeyInfoFactory.cs index 54ca78090..bb6f37831 100644 --- a/crypto/src/x509/SubjectPublicKeyInfoFactory.cs +++ b/crypto/src/x509/SubjectPublicKeyInfoFactory.cs @@ -26,162 +26,162 @@ namespace Org.BouncyCastle.X509 { } - /// <summary> + /// <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) + AsymmetricKeyParameter key) { - if (key == null) - throw new ArgumentNullException("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) + if (key is ElGamalPublicKeyParameters) { - ElGamalPublicKeyParameters _key = (ElGamalPublicKeyParameters)key; - ElGamalParameters kp = _key.Parameters; + 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)); + SubjectPublicKeyInfo info = new SubjectPublicKeyInfo( + new AlgorithmIdentifier( + OiwObjectIdentifiers.ElGamalAlgorithm, + new ElGamalParameter(kp.P, kp.G).ToAsn1Object()), + new DerInteger(_key.Y)); - return info; + return info; } - if (key is DsaPublicKeyParameters) + 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(); + DsaParameters kp = _key.Parameters; + Asn1Encodable ae = kp == null + ? null + : new DsaParameter(kp.P, kp.Q, kp.G).ToAsn1Object(); - return new SubjectPublicKeyInfo( + return new SubjectPublicKeyInfo( new AlgorithmIdentifier(X9ObjectIdentifiers.IdDsa, ae), - new DerInteger(_key.Y)); + new DerInteger(_key.Y)); } - if (key is DHPublicKeyParameters) + if (key is DHPublicKeyParameters) { DHPublicKeyParameters _key = (DHPublicKeyParameters) key; - DHParameters kp = _key.Parameters; + DHParameters kp = _key.Parameters; - SubjectPublicKeyInfo info = new SubjectPublicKeyInfo( + SubjectPublicKeyInfo info = new SubjectPublicKeyInfo( new AlgorithmIdentifier( - _key.AlgorithmOid, - new DHParameter(kp.P, kp.G, kp.L).ToAsn1Object()), - new DerInteger(_key.Y)); + _key.AlgorithmOid, + new DHParameter(kp.P, kp.G, kp.L).ToAsn1Object()), + new DerInteger(_key.Y)); - return info; + 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()); + SubjectPublicKeyInfo info = new SubjectPublicKeyInfo( + new AlgorithmIdentifier(PkcsObjectIdentifiers.RsaEncryption, DerNull.Instance), + new RsaPublicKeyStructure(_key.Modulus, _key.Exponent).ToAsn1Object()); - return info; + return info; } // End of RSA. - if (key is ECPublicKeyParameters) + 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 - { - 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); - } - - 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 static void ExtractBytes( - byte[] encKey, - int offset, - BigInteger bI) - { - byte[] val = bI.ToByteArray(); - int n = (bI.BitLength + 7) / 8; - - for (int i = 0; i < n; ++i) - { - encKey[offset + i] = val[val.Length - 1 - i]; - } - } - } + if (_key.AlgorithmName == "ECGOST3410") + { + if (_key.PublicKeyParamSet == null) + throw Platform.CreateNotImplementedException("Not a CryptoPro parameter set"); + + ECPoint q = _key.Q.Normalize(); + BigInteger bX = q.AffineXCoord.ToBigInteger(); + BigInteger bY = q.AffineYCoord.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 + { + 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); + } + + 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 static void ExtractBytes( + byte[] encKey, + int offset, + BigInteger bI) + { + byte[] val = bI.ToByteArray(); + int n = (bI.BitLength + 7) / 8; + + for (int i = 0; i < n; ++i) + { + encKey[offset + i] = val[val.Length - 1 - i]; + } + } + } } |