public static byte[] Digest(byte[] data, String algo) { if (algo == null) { throw new ArgumentNullException("El algoritmo de huella digital no puede ser nulo"); } if (data == null) { throw new ArgumentNullException("Los datos no pueden ser nulos"); } switch (algo) { /** * ALGORITMOS DE HASING */ case AOSignConstants.SIGN_ALGORITHM_SHA1: { Sha1Digest dig = new Sha1Digest(); dig.BlockUpdate(data, 0, data.Length); byte[] result = new byte[dig.GetDigestSize()]; dig.DoFinal(result, 0); return result; } case AOSignConstants.SIGN_ALGORITHM_SHA256: { Sha256Digest dig = new Sha256Digest(); dig.BlockUpdate(data, 0, data.Length); byte[] result = new byte[dig.GetDigestSize()]; dig.DoFinal(result, 0); return result; } case AOSignConstants.SIGN_ALGORITHM_SHA384: { Sha384Digest dig = new Sha384Digest(); dig.BlockUpdate(data, 0, data.Length); byte[] result = new byte[dig.GetDigestSize()]; dig.DoFinal(result, 0); return result; } case AOSignConstants.SIGN_ALGORITHM_SHA512: { Sha512Digest dig = new Sha512Digest(); dig.BlockUpdate(data, 0, data.Length); byte[] result = new byte[dig.GetDigestSize()]; dig.DoFinal(result, 0); return result; } case AOSignConstants.SIGN_ALGORITHM_RIPEMD160: { RipeMD160Digest dig = new RipeMD160Digest(); dig.BlockUpdate(data, 0, data.Length); byte[] result = new byte[dig.GetDigestSize()]; dig.DoFinal(result, 0); return result; } case AOSignConstants.SIGN_ALGORITHM_MD5: { MD5Digest dig = new MD5Digest(); dig.BlockUpdate(data, 0, data.Length); byte[] result = new byte[dig.GetDigestSize()]; dig.DoFinal(result, 0); return result; } case AOSignConstants.SIGN_ALGORITHM_MD2: { MD2Digest dig = new MD2Digest(); dig.BlockUpdate(data, 0, data.Length); byte[] result = new byte[dig.GetDigestSize()]; dig.DoFinal(result, 0); return result; } default: // You can use the default case. throw new ArgumentNullException("El algoritmo no es reconocido"); } throw new ArgumentNullException("Algoritmo de hash no soportado: " + algo); }
public ITestResult Perform() { IDigest digest = new RipeMD160Digest(); byte[] resBuf = new byte[digest.GetDigestSize()]; for (int i = 0; i < messages.Length; i++) { byte[] m = Encoding.ASCII.GetBytes(messages[i]); digest.BlockUpdate(m, 0, m.Length); digest.DoFinal(resBuf, 0); if (!Arrays.AreEqual(resBuf, Hex.Decode(digests[i]))) { return new SimpleTestResult(false, Name + ": Vector " + i + " failed"); } } // // test 2 // byte[] mm = Encoding.ASCII.GetBytes(messages[messages.Length-1]); digest.BlockUpdate(mm, 0, mm.Length/2); // clone the IDigest IDigest d = new RipeMD160Digest((RipeMD160Digest)digest); digest.BlockUpdate(mm, mm.Length/2, mm.Length - mm.Length/2); digest.DoFinal(resBuf, 0); if (!Arrays.AreEqual(resBuf, Hex.Decode(digests[digests.Length-1]))) { return new SimpleTestResult(false, "RipeMD160 failing clone test" + SimpleTest.NewLine + " expected: " + digests[digests.Length-1] + SimpleTest.NewLine + " got : " + Hex.ToHexString(resBuf)); } d.BlockUpdate(mm, mm.Length/2, mm.Length - mm.Length/2); d.DoFinal(resBuf, 0); if (!Arrays.AreEqual(resBuf, Hex.Decode(digests[digests.Length-1]))) { return new SimpleTestResult(false, "RipeMD160 failing clone test - part 2" + SimpleTest.NewLine + " expected: " + digests[digests.Length-1] + SimpleTest.NewLine + " got : " + Hex.ToHexString(resBuf)); } for (int i = 0; i < 1000000; i++) { digest.Update((byte)'a'); } digest.DoFinal(resBuf, 0); if (!Arrays.AreEqual(resBuf, Hex.Decode(MillionADigest))) { return new SimpleTestResult(false, Name + ": Million a's failed"); } return new SimpleTestResult(true, Name + ": Okay"); }