public ProcessBlock ( byte input, int inOff, int length ) : byte[] | ||
input | byte | |
inOff | int | |
length | int | |
return | byte[] |
public void TestInvalidP() { ElGamalParameters dhParams = new ElGamalParameters(pPgpBogusPSamp, gPgpBogusPSamp, lPgpBogusPSamp); ElGamalPublicKeyParameters pu = new ElGamalPublicKeyParameters(yPgpBogusPSamp, dhParams); ElGamalPrivateKeyParameters pv = new ElGamalPrivateKeyParameters(xPgpBogusPSamp, dhParams); ElGamalEngine e = new ElGamalEngine(); e.Init(true, pu); byte[] message = Hex.Decode("5468697320697320612074657374"); byte[] pText = message; byte[] cText = e.ProcessBlock(pText, 0, pText.Length); e.Init(false, pv); pText = e.ProcessBlock(cText, 0, cText.Length); if (Arrays.AreEqual(message, pText)) { Fail("invalid test failed"); } }
private void doTestEnc( int size, int privateValueSize, BigInteger g, BigInteger p) { ElGamalParameters dhParams = new ElGamalParameters(p, g, privateValueSize); ElGamalKeyGenerationParameters ekgParams = new ElGamalKeyGenerationParameters(new SecureRandom(), dhParams); ElGamalKeyPairGenerator kpGen = new ElGamalKeyPairGenerator(); kpGen.Init(ekgParams); // // generate pair // AsymmetricCipherKeyPair pair = kpGen.GenerateKeyPair(); ElGamalPublicKeyParameters pu = (ElGamalPublicKeyParameters) pair.Public; ElGamalPrivateKeyParameters pv = (ElGamalPrivateKeyParameters) pair.Private; checkKeySize(privateValueSize, pv); ElGamalEngine e = new ElGamalEngine(); e.Init(true, pu); if (e.GetOutputBlockSize() != size / 4) { Fail(size + " GetOutputBlockSize() on encryption failed."); } byte[] message = Hex.Decode("5468697320697320612074657374"); byte[] pText = message; byte[] cText = e.ProcessBlock(pText, 0, pText.Length); e.Init(false, pv); if (e.GetOutputBlockSize() != (size / 8) - 1) { Fail(size + " GetOutputBlockSize() on decryption failed."); } pText = e.ProcessBlock(cText, 0, cText.Length); if (!Arrays.AreEqual(message, pText)) { Fail(size + " bit test failed"); } e.Init(true, pu); byte[] bytes = new byte[e.GetInputBlockSize() + 2]; try { e.ProcessBlock(bytes, 0, bytes.Length); Fail("out of range block not detected"); } catch (DataLengthException) { // expected } try { bytes[0] = (byte)0xff; e.ProcessBlock(bytes, 0, bytes.Length - 1); Fail("out of range block not detected"); } catch (DataLengthException) { // expected } try { bytes[0] = (byte)0x7f; e.ProcessBlock(bytes, 0, bytes.Length - 1); } catch (DataLengthException) { Fail("in range block failed"); } }
/** * this test is can take quiet a while * * @param size size of key in bits. */ private void doTestGeneration( int size) { ElGamalParametersGenerator pGen = new ElGamalParametersGenerator(); pGen.Init(size, 10, new SecureRandom()); ElGamalParameters elParams = pGen.GenerateParameters(); if (elParams.L != 0) { Fail("ElGamalParametersGenerator failed to set L to 0 in generated ElGamalParameters"); } ElGamalKeyGenerationParameters ekgParams = new ElGamalKeyGenerationParameters(new SecureRandom(), elParams); ElGamalKeyPairGenerator kpGen = new ElGamalKeyPairGenerator(); kpGen.Init(ekgParams); // // generate first pair // AsymmetricCipherKeyPair pair = kpGen.GenerateKeyPair(); ElGamalPublicKeyParameters pu = (ElGamalPublicKeyParameters)pair.Public; ElGamalPrivateKeyParameters pv = (ElGamalPrivateKeyParameters)pair.Private; ElGamalEngine e = new ElGamalEngine(); e.Init(true, new ParametersWithRandom(pu, new SecureRandom())); byte[] message = Hex.Decode("5468697320697320612074657374"); byte[] pText = message; byte[] cText = e.ProcessBlock(pText, 0, pText.Length); e.Init(false, pv); pText = e.ProcessBlock(cText, 0, cText.Length); if (!Arrays.AreEqual(message, pText)) { Fail("generation test failed"); } }