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 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); }