public DsaKeyGenerationParameters(
            SecureRandom	random,
            DsaParameters	parameters)
			: base(random, parameters.P.BitLength - 1)
        {
            this.parameters = parameters;
        }
Пример #2
0
        public static DsaPublicKeyParameters GetDsaPublicKey(DSAParameters dp)
        {
            DsaValidationParameters validationParameters = (dp.Seed != null) ? new DsaValidationParameters(dp.Seed, dp.Counter) : null;

            var parameters = new DsaParameters(new BigInteger(1, dp.P), new BigInteger(1, dp.Q), new BigInteger(1, dp.G), validationParameters);

            return new DsaPublicKeyParameters(new BigInteger(1, dp.Y), parameters);
        }
Пример #3
0
		public DsaKeyParameters(
            bool			isPrivate,
            DsaParameters	parameters)
			: base(isPrivate)
        {
			// Note: parameters may be null
            this.parameters = parameters;
        }
		public DsaPublicKeyParameters(
            BigInteger		y,
            DsaParameters	parameters)
			: base(false, parameters)
        {
			if (y == null)
				throw new ArgumentNullException("y");

			this.y = y;
        }
		public DsaPrivateKeyParameters(
            BigInteger		x,
            DsaParameters	parameters)
			: base(true, parameters)
        {
			if (x == null)
				throw new ArgumentNullException("x");

			this.x = x;
        }
Пример #6
0
        public static AsymmetricCipherKeyPair GetDsaKeyPair(DSAParameters dp)
        {
            DsaValidationParameters validationParameters = (dp.Seed != null) ? new DsaValidationParameters(dp.Seed, dp.Counter) : null;

            var parameters = new DsaParameters(new BigInteger(1, dp.P), new BigInteger(1, dp.Q), new BigInteger(1, dp.G), validationParameters);

            var pubKey = new DsaPublicKeyParameters(new BigInteger(1, dp.Y), parameters);

            var privKey = new DsaPrivateKeyParameters(new BigInteger(1, dp.X), parameters);

            return new AsymmetricCipherKeyPair(pubKey, privKey);
        }
Пример #7
0
		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 ecP;

				if (para.IsNamedCurve)
				{
					ecP = ECKeyPairGenerator.FindECCurveByOid((DerObjectIdentifier)para.Parameters);
				}
				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("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);
            }
        }
Пример #8
0
		/**
		* Read a Key Pair
		*/
		private object ReadPrivateKey(PemObject pemObject)
		{
			//
			// extract the key
			//
			Debug.Assert(pemObject.Type.EndsWith("PRIVATE KEY"));

			string type = pemObject.Type.Substring(0, pemObject.Type.Length - "PRIVATE KEY".Length).Trim();
			byte[] keyBytes = pemObject.Content;

			IDictionary fields = Platform.CreateHashtable();
			foreach (PemHeader header in pemObject.Headers)
			{
				fields[header.Name] = header.Value;
			}

			string procType = (string) fields["Proc-Type"];

			if (procType == "4,ENCRYPTED")
			{
				if (pFinder == null)
					throw new PasswordException("No password finder specified, but a password is required");

				char[] password = pFinder.GetPassword();

				if (password == null)
					throw new PasswordException("Password is null, but a password is required");

				string dekInfo = (string) fields["DEK-Info"];
				string[] tknz = dekInfo.Split(',');

				string dekAlgName = tknz[0].Trim();
				byte[] iv = Hex.Decode(tknz[1].Trim());

				keyBytes = PemUtilities.Crypt(false, keyBytes, password, dekAlgName, iv);
			}

			try
			{
				AsymmetricKeyParameter pubSpec, privSpec;
				Asn1Sequence seq = (Asn1Sequence) Asn1Object.FromByteArray(keyBytes);

				switch (type)
				{
					case "RSA":
					{
						if (seq.Count != 9)
							throw new PemException("malformed sequence in RSA private key");

						RsaPrivateKeyStructure rsa = new RsaPrivateKeyStructure(seq);

						pubSpec = new RsaKeyParameters(false, rsa.Modulus, rsa.PublicExponent);
						privSpec = new RsaPrivateCrtKeyParameters(
							rsa.Modulus, rsa.PublicExponent, rsa.PrivateExponent,
							rsa.Prime1, rsa.Prime2, rsa.Exponent1, rsa.Exponent2,
							rsa.Coefficient);

						break;
					}

					case "DSA":
					{
						if (seq.Count != 6)
							throw new PemException("malformed sequence in DSA private key");

						// TODO Create an ASN1 object somewhere for this?
						//DerInteger v = (DerInteger)seq[0];
						DerInteger p = (DerInteger)seq[1];
						DerInteger q = (DerInteger)seq[2];
						DerInteger g = (DerInteger)seq[3];
						DerInteger y = (DerInteger)seq[4];
						DerInteger x = (DerInteger)seq[5];

						DsaParameters parameters = new DsaParameters(p.Value, q.Value, g.Value);

						privSpec = new DsaPrivateKeyParameters(x.Value, parameters);
						pubSpec = new DsaPublicKeyParameters(y.Value, parameters);

						break;
					}

					case "EC":
					{
						ECPrivateKeyStructure pKey = new ECPrivateKeyStructure(seq);
						AlgorithmIdentifier algId = new AlgorithmIdentifier(
							X9ObjectIdentifiers.IdECPublicKey, pKey.GetParameters());

						PrivateKeyInfo privInfo = new PrivateKeyInfo(algId, pKey.ToAsn1Object());

						// TODO Are the keys returned here ECDSA, as Java version forces?
						privSpec = PrivateKeyFactory.CreateKey(privInfo);

						DerBitString pubKey = pKey.GetPublicKey();
						if (pubKey != null)
						{
							SubjectPublicKeyInfo pubInfo = new SubjectPublicKeyInfo(algId, pubKey.GetBytes());

							// TODO Are the keys returned here ECDSA, as Java version forces?
							pubSpec = PublicKeyFactory.CreateKey(pubInfo);
						}
						else
						{
							pubSpec = ECKeyPairGenerator.GetCorrespondingPublicKey(
								(ECPrivateKeyParameters)privSpec);
						}

						break;
					}

					case "ENCRYPTED":
					{
						char[] password = pFinder.GetPassword();

						if (password == null)
							throw new PasswordException("Password is null, but a password is required");

						return PrivateKeyFactory.DecryptKey(password, EncryptedPrivateKeyInfo.GetInstance(seq));
					}

					case "":
					{
						return PrivateKeyFactory.CreateKey(PrivateKeyInfo.GetInstance(seq));
					}

					default:
						throw new ArgumentException("Unknown key type: " + type, "type");
				}

				return new AsymmetricCipherKeyPair(pubSpec, privSpec);
			}
			catch (IOException e)
			{
				throw e;
			}
			catch (Exception e)
			{
				throw new PemException(
					"problem creating " + type + " private key: " + e.ToString());
			}
		}
Пример #9
0
		protected bool Equals(
			DsaParameters other)
		{
			return p.Equals(other.p) && q.Equals(other.q) && g.Equals(other.g);
		}
Пример #10
0
 protected bool Equals(
     DsaParameters other)
 {
     return(p.Equals(other.p) && q.Equals(other.q) && g.Equals(other.g));
 }
Пример #11
0
		/// <summary>Extract a <c>PgpPrivateKey</c> from this secret key's encrypted contents.</summary>
        public PgpPrivateKey ExtractPrivateKey(
            char[] passPhrase)
        {
			byte[] secKeyData = secret.GetSecretKeyData();
            if (secKeyData == null || secKeyData.Length < 1)
                return null;

			PublicKeyPacket pubPk = secret.PublicKeyPacket;
            try
            {
                byte[] data = ExtractKeyData(passPhrase);
                BcpgInputStream bcpgIn = BcpgInputStream.Wrap(new MemoryStream(data, false));
                AsymmetricKeyParameter privateKey;
                switch (pubPk.Algorithm)
                {
                case PublicKeyAlgorithmTag.RsaEncrypt:
                case PublicKeyAlgorithmTag.RsaGeneral:
                case PublicKeyAlgorithmTag.RsaSign:
                    RsaPublicBcpgKey rsaPub = (RsaPublicBcpgKey)pubPk.Key;
                    RsaSecretBcpgKey rsaPriv = new RsaSecretBcpgKey(bcpgIn);
                    RsaPrivateCrtKeyParameters rsaPrivSpec = new RsaPrivateCrtKeyParameters(
                        rsaPriv.Modulus,
                        rsaPub.PublicExponent,
                        rsaPriv.PrivateExponent,
                        rsaPriv.PrimeP,
                        rsaPriv.PrimeQ,
                        rsaPriv.PrimeExponentP,
                        rsaPriv.PrimeExponentQ,
                        rsaPriv.CrtCoefficient);
                    privateKey = rsaPrivSpec;
                    break;
                case PublicKeyAlgorithmTag.Dsa:
                    DsaPublicBcpgKey dsaPub = (DsaPublicBcpgKey)pubPk.Key;
                    DsaSecretBcpgKey dsaPriv = new DsaSecretBcpgKey(bcpgIn);
                    DsaParameters dsaParams = new DsaParameters(dsaPub.P, dsaPub.Q, dsaPub.G);
                    privateKey = new DsaPrivateKeyParameters(dsaPriv.X, dsaParams);
                    break;
                case PublicKeyAlgorithmTag.ElGamalEncrypt:
                case PublicKeyAlgorithmTag.ElGamalGeneral:
                    ElGamalPublicBcpgKey elPub = (ElGamalPublicBcpgKey)pubPk.Key;
                    ElGamalSecretBcpgKey elPriv = new ElGamalSecretBcpgKey(bcpgIn);
                    ElGamalParameters elParams = new ElGamalParameters(elPub.P, elPub.G);
                    privateKey = new ElGamalPrivateKeyParameters(elPriv.X, elParams);
                    break;
                default:
                    throw new PgpException("unknown public key algorithm encountered");
                }

				return new PgpPrivateKey(privateKey, KeyId);
            }
            catch (PgpException e)
            {
                throw e;
            }
            catch (Exception e)
            {
                throw new PgpException("Exception constructing key", e);
            }
        }
Пример #12
0
		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);
			}
			// 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.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, algOid);
			}
			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)
				{
					ecP = ECKeyPairGenerator.FindECCurveByOid((DerObjectIdentifier) para.Parameters);
				}
				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("ECGOST3410", 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");
			}
        }