public static DsaParameter GetInstance(Asn1TaggedObject obj, bool explicitly) { return(DsaParameter.GetInstance(Asn1Sequence.GetInstance(obj, explicitly))); }
public void TestParameters() { // AlgorithmParameterGenerator a = AlgorithmParameterGenerator.GetInstance("DSA"); // a.init(512, random); DsaParametersGenerator a = new DsaParametersGenerator(); a.Init(512, 20, random); // AlgorithmParameters parameters = a.generateParameters(); DsaParameters p = a.GenerateParameters(); // byte[] encodeParams = parameters.GetEncoded(); byte[] encodeParams = new DsaParameter(p.P, p.Q, p.G).GetDerEncoded(); // AlgorithmParameters a2 = AlgorithmParameters.GetInstance("DSA"); // a2.init(encodeParams); DsaParameter dsaP = DsaParameter.GetInstance(Asn1Object.FromByteArray(encodeParams)); DsaParameters p2 = new DsaParameters(dsaP.P, dsaP.Q, dsaP.G); // a and a2 should be equivalent! // byte[] encodeParams_2 = a2.GetEncoded(); byte[] encodeParams_2 = new DsaParameter(p2.P, p2.Q, p2.G).GetDerEncoded(); if (!AreEqual(encodeParams, encodeParams_2)) { Fail("encode/Decode parameters failed"); } // DSAParameterSpec dsaP = (DSAParameterSpec)parameters.getParameterSpec(typeof(DSAParameterSpec)); // KeyPairGenerator g = KeyPairGenerator.GetInstance("DSA"); IAsymmetricCipherKeyPairGenerator g = GeneratorUtilities.GetKeyPairGenerator("DSA"); // g.initialize(dsaP, new SecureRandom()); g.Init(new DsaKeyGenerationParameters(new SecureRandom(), p)); // KeyPair p = g.generateKeyPair(); IAsymmetricCipherKeyPair pair = g.GenerateKeyPair(); // PrivateKey sKey = p.Private; // PublicKey vKey = p.Public; IAsymmetricKeyParameter sKey = pair.Private; IAsymmetricKeyParameter vKey = pair.Public; ISigner s = SignerUtilities.GetSigner("DSA"); byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 }; s.Init(true, sKey); s.BlockUpdate(data, 0, data.Length); byte[] sigBytes = s.GenerateSignature(); s = SignerUtilities.GetSigner("DSA"); s.Init(false, vKey); s.BlockUpdate(data, 0, data.Length); if (!s.VerifySignature(sigBytes)) { Fail("DSA verification failed"); } }
public void TestDsa2Parameters() { byte[] seed = Hex.Decode("4783081972865EA95D43318AB2EAF9C61A2FC7BBF1B772A09017BDF5A58F4FF0"); //AlgorithmParameterGenerator a = AlgorithmParameterGenerator.getInstance("DSA", "BC"); //a.init(2048, new DSATestSecureRandom(seed)); DsaParametersGenerator a = new DsaParametersGenerator(new Sha256Digest()); a.Init(new DsaParameterGenerationParameters(2048, 256, 80, new DsaTestSecureRandom(seed))); //AlgorithmParameters parameters = a.generateParameters(); //DSAParameterSpec dsaP = (DSAParameterSpec)parameters.getParameterSpec(DSAParameterSpec.class); DsaParameters dsaP = a.GenerateParameters(); if (!dsaP.Q.Equals(new BigInteger("C24ED361870B61E0D367F008F99F8A1F75525889C89DB1B673C45AF5867CB467", 16))) { Fail("Q incorrect"); } if (!dsaP.P.Equals(new BigInteger( "F56C2A7D366E3EBDEAA1891FD2A0D099" + "436438A673FED4D75F594959CFFEBCA7BE0FC72E4FE67D91" + "D801CBA0693AC4ED9E411B41D19E2FD1699C4390AD27D94C" + "69C0B143F1DC88932CFE2310C886412047BD9B1C7A67F8A2" + "5909132627F51A0C866877E672E555342BDF9355347DBD43" + "B47156B2C20BAD9D2B071BC2FDCF9757F75C168C5D9FC431" + "31BE162A0756D1BDEC2CA0EB0E3B018A8B38D3EF2487782A" + "EB9FBF99D8B30499C55E4F61E5C7DCEE2A2BB55BD7F75FCD" + "F00E48F2E8356BDB59D86114028F67B8E07B127744778AFF" + "1CF1399A4D679D92FDE7D941C5C85C5D7BFF91BA69F9489D" + "531D1EBFA727CFDA651390F8021719FA9F7216CEB177BD75", 16))) { Fail("P incorrect"); } if (!dsaP.G.Equals(new BigInteger( "8DC6CC814CAE4A1C05A3E186A6FE27EA" + "BA8CDB133FDCE14A963A92E809790CBA096EAA26140550C1" + "29FA2B98C16E84236AA33BF919CD6F587E048C52666576DB" + "6E925C6CBE9B9EC5C16020F9A44C9F1C8F7A8E611C1F6EC2" + "513EA6AA0B8D0F72FED73CA37DF240DB57BBB27431D61869" + "7B9E771B0B301D5DF05955425061A30DC6D33BB6D2A32BD0" + "A75A0A71D2184F506372ABF84A56AEEEA8EB693BF29A6403" + "45FA1298A16E85421B2208D00068A5A42915F82CF0B858C8" + "FA39D43D704B6927E0B2F916304E86FB6A1B487F07D8139E" + "428BB096C6D67A76EC0B8D4EF274B8A2CF556D279AD267CC" + "EF5AF477AFED029F485B5597739F5D0240F67C2D948A6279", 16))) { Fail("G incorrect"); } //KeyPairGenerator g = KeyPairGenerator.getInstance("DSA", "BC"); IAsymmetricCipherKeyPairGenerator g = GeneratorUtilities.GetKeyPairGenerator("DSA"); //g.initialize(dsaP, FixedSecureRandom.From(Hex.Decode("0CAF2EF547EC49C4F3A6FE6DF4223A174D01F2C115D49A6F73437C29A2A8458C"))); g.Init(new DsaKeyGenerationParameters(FixedSecureRandom.From(Hex.Decode("0CAF2EF547EC49C4F3A6FE6DF4223A174D01F2C115D49A6F73437C29A2A8458C")), dsaP)); //KeyPair p = g.generateKeyPair(); AsymmetricCipherKeyPair p = g.GenerateKeyPair(); //DSAPrivateKey sKey = (DSAPrivateKey)p.getPrivate(); //DSAPublicKey vKey = (DSAPublicKey)p.getPublic(); DsaPrivateKeyParameters sKey = (DsaPrivateKeyParameters)p.Private; DsaPublicKeyParameters vKey = (DsaPublicKeyParameters)p.Public; if (!vKey.Y.Equals(new BigInteger( "2828003D7C747199143C370FDD07A286" + "1524514ACC57F63F80C38C2087C6B795B62DE1C224BF8D1D" + "1424E60CE3F5AE3F76C754A2464AF292286D873A7A30B7EA" + "CBBC75AAFDE7191D9157598CDB0B60E0C5AA3F6EBE425500" + "C611957DBF5ED35490714A42811FDCDEB19AF2AB30BEADFF" + "2907931CEE7F3B55532CFFAEB371F84F01347630EB227A41" + "9B1F3F558BC8A509D64A765D8987D493B007C4412C297CAF" + "41566E26FAEE475137EC781A0DC088A26C8804A98C23140E" + "7C936281864B99571EE95C416AA38CEEBB41FDBFF1EB1D1D" + "C97B63CE1355257627C8B0FD840DDB20ED35BE92F08C49AE" + "A5613957D7E5C7A6D5A5834B4CB069E0831753ECF65BA02B", 16))) { Fail("Y value incorrect"); } if (!sKey.X.Equals( new BigInteger("0CAF2EF547EC49C4F3A6FE6DF4223A174D01F2C115D49A6F73437C29A2A8458C", 16))) { Fail("X value incorrect"); } //byte[] encodeParams = parameters.getEncoded(); byte[] encodeParams = new DsaParameter(dsaP.P, dsaP.Q, dsaP.G).GetDerEncoded(); //AlgorithmParameters a2 = AlgorithmParameters.getInstance("DSA", "BC"); //a2.init(encodeParams); DsaParameter dsaP2 = DsaParameter.GetInstance(Asn1Object.FromByteArray(encodeParams)); DsaParameters p2 = new DsaParameters(dsaP.P, dsaP.Q, dsaP.G); // a and a2 should be equivalent! //byte[] encodeParams_2 = a2.GetEncoded(); byte[] encodeParams_2 = new DsaParameter(p2.P, p2.Q, p2.G).GetDerEncoded(); if (!AreEqual(encodeParams, encodeParams_2)) { Fail("encode/decode parameters failed"); } ISigner s = SignerUtilities.GetSigner("DSA"); byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 }; s.Init(true, sKey); s.BlockUpdate(data, 0, data.Length); byte[] sigBytes = s.GenerateSignature(); s = SignerUtilities.GetSigner("DSA"); s.Init(false, vKey); s.BlockUpdate(data, 0, data.Length); if (!s.VerifySignature(sigBytes)) { Fail("DSA verification failed"); } }