充气城堡-迪菲·海尔曼的秘密不符

Question

我正在使用Bouncy城​​堡库来使用DH密钥交换。到目前为止，我已经尝试了很多，但是按键似乎不匹配。我究竟做错了什么？请帮助！

        var p = Org.BouncyCastle.Math.BigInteger.ProbablePrime(1024, new Random());
        var g = new Org.BouncyCastle.Math.BigInteger("5");

        var importedParameters = new Org.BouncyCastle.Crypto.Parameters.DHParameters(p, g);

        //---------------------bob---------------------------------------------------
        var scrnd = new SecureRandom();
        var bobkeyGen = GeneratorUtilities.GetKeyPairGenerator("DH");
        var kgp = new DHKeyGenerationParameters(scrnd, importedParameters);
        bobkeyGen.Init(kgp);
        var bobasypair = bobkeyGen.GenerateKeyPair();

        var dhPublicKeyParameters = bobasypair.Public as DHPublicKeyParameters;
        var dhPrivateKeyParameters = bobasypair.Private as DHPrivateKeyParameters;

        var internalKeyAgree = AgreementUtilities.GetBasicAgreement("DH");
        internalKeyAgree.Init(dhPrivateKeyParameters);
        var secret = internalKeyAgree.CalculateAgreement(dhPublicKeyParameters);

        //-----------------------------alice--------------------------------------------------------------------------------
        var alicekeyGen = GeneratorUtilities.GetKeyPairGenerator("DH");
        var allkgp = new DHKeyGenerationParameters(scrnd, importedParameters);
        alicekeyGen.Init(allkgp);
        var aliceasypair = alicekeyGen.GenerateKeyPair();

        var alicedhPublicKeyParameters = aliceasypair.Public as DHPublicKeyParameters;
        var alicedhPrivateKeyParameters = aliceasypair.Private as DHPrivateKeyParameters;

        var allinternalKeyAgree = AgreementUtilities.GetBasicAgreement("DH");
        allinternalKeyAgree.Init(alicedhPrivateKeyParameters);
        var tobesamesecret = allinternalKeyAgree.CalculateAgreement(alicedhPublicKeyParameters);

        if (!secret.Equals(tobesamesecret))
            throw new Exception();