public void TestElGamal()
{
BigInteger ELGamalParaG = new BigInteger(Base64.Decode("QAZPRcsH8kHVKS5065R1Xy6QtsPvDkmDZtPuq18EJkvLrCIZivE/m5puQp3/VKJrG7dKgz4NBGpONp3HT+Cn/g=="));
BigInteger ELGamalParaP = new BigInteger(Base64.Decode("AKXmAwgkudDLI/Yxk6wk3APn+mSjX5QSyDwpchmegSIi1ZNC0Jb+IbxjroKNhRTBKjtv4/JTXtJS6IqaZv9uKes="));
BigInteger ELGamalPubY = new BigInteger(Base64.Decode("AJ/gXuZuCA2X044otNkzs8FI36XuFu1L/YHg5cEmDvICTigycRN2E1DnhP+CTqxEqgEqX8rBe5tuGDlkTLwgNqM="));
BigInteger ELGamalPriv = new BigInteger(Base64.Decode("CqVr+K0TpuJKQnc76MjKhxrJzGr93jnuE3mTpth486Meymt8uWEVAQj1tGc9DTt14F9aV9WIT2oYYbvLJRcwow=="));
ElGamalParameters elPara = new ElGamalParameters(ELGamalParaP, ELGamalParaG);
ElGamalPrivateKeyParameters elPriv = new ElGamalPrivateKeyParameters(ELGamalPriv, elPara);
ElGamalPublicKeyParameters elPub = new ElGamalPublicKeyParameters(ELGamalPubY, elPara);
SubjectPublicKeyInfo subInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(elPub);
PrivateKeyInfo privInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(elPriv);
ElGamalPrivateKeyParameters telPriv = (ElGamalPrivateKeyParameters)PrivateKeyFactory.CreateKey(privInfo);
ElGamalPublicKeyParameters telPub = (ElGamalPublicKeyParameters)PublicKeyFactory.CreateKey(subInfo);
// Console.WriteLine(telPriv.Equals(elPriv));
Assert.IsTrue(telPriv.Equals(elPriv), "ELGamal Private key to into back to private key.");
Assert.IsTrue(telPub.Equals(elPub), "ELGamal Public key to into back to private key.");
Assert.IsTrue(true, "ELGamal Test worked.");
}
protected bool Equals(ElGamalPublicKeyParameters other)
{
return _y.Equals(other.Y) && base.Equals(other);
}
public void TestElGamal()
{
BigInteger g512 = new BigInteger("153d5d6172adb43045b68ae8e1de1070b6137005686d29d3d73a7749199681ee5b212c9b96bfdcfa5b20cd5e3fd2044895d609cf9b410b7a0f12ca1cb9a428cc", 16);
BigInteger p512 = new BigInteger("9494fec095f3b85ee286542b3836fc81a5dd0a0349b4c239dd38744d488cf8e31db8bcb7d33b41abb9e5a33cca9144b1cef332c94bf0573bf047a3aca98cdf3b", 16);
ElGamalParameters dhParams = new ElGamalParameters(p512, g512);
ElGamalKeyGenerationParameters parameters = new ElGamalKeyGenerationParameters(new SecureRandom(), dhParams); ElGamalKeyPairGenerator kpGen = new ElGamalKeyPairGenerator();
kpGen.Init(parameters);
AsymmetricCipherKeyPair pair = kpGen.GenerateKeyPair();
ElGamalPublicKeyParameters pu1 = (ElGamalPublicKeyParameters)pair.Public;
ElGamalPrivateKeyParameters pv1 = (ElGamalPrivateKeyParameters)pair.Private;
ElGamalPublicKeyParameters pu2 = new ElGamalPublicKeyParameters(pu1.Y, pu1.Parameters);
ElGamalPrivateKeyParameters pv2 = new ElGamalPrivateKeyParameters(pv1.X, pv1.Parameters);
ElGamalPublicKeyParameters pu3 = new ElGamalPublicKeyParameters(pv1.X, pu1.Parameters);
ElGamalPrivateKeyParameters pv3 = new ElGamalPrivateKeyParameters(pu1.Y, pu1.Parameters);
doTest(pu1, pu2, pu3);
doTest(pv1, pv2, pv3);
ElGamalParameters pr1 = pu1.Parameters;
ElGamalParameters pr2 = new ElGamalParameters(pr1.P, pr1.G);
ElGamalParameters pr3 = new ElGamalParameters(pr1.G, pr1.P);
doTest(pr1, pr2, pr3);
pu2 = new ElGamalPublicKeyParameters(pu1.Y, pr2);
pv2 = new ElGamalPrivateKeyParameters(pv1.X, pr2);
doTest(pu1, pu2, pu3);
doTest(pv1, pv2, pv3);
ElGamalTestKeyParameters k1 = new ElGamalTestKeyParameters(false, null);
ElGamalTestKeyParameters k2 = new ElGamalTestKeyParameters(false, null);
ElGamalTestKeyParameters k3 = new ElGamalTestKeyParameters(false, pu1.Parameters);
doTest(k1, k2, k3);
}
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");
}
}
protected bool Equals(
ElGamalPublicKeyParameters other)
{
return(y.Equals(other.y) && base.Equals(other));
}
protected bool Equals(ElGamalPublicKeyParameters other) => (this.y.Equals(other.y) && base.Equals((ElGamalKeyParameters)other));