private void RunTestValid(TestGroupTest test)
        {
            ECPublicKeyParameters  publicKey  = KeyParser.ParsePublicKeyDer(Hex.Decode(test.PublicKey));
            ECPrivateKeyParameters privateKey = KeyParser.ParsePrivateKeyHex(test.PrivateKey);

            byte[] expectedSharedSecret = Hex.Decode(test.SharedSecret);
            byte[] sharedSecret         = KeyDerivation.ComputeSharedSecret(privateKey, publicKey);
            Assert.True(sharedSecret.SequenceEqual(expectedSharedSecret));
        }
        private void RunTestInvalid(TestGroupTest test)
        {
            ECPrivateKeyParameters privateKey = KeyParser.ParsePrivateKeyHex(test.PrivateKey);

            byte[] publicKeyBytes = Hex.Decode(test.PublicKey);
            Assert.Throws <ArgumentException>(() =>
            {
                ECPublicKeyParameters publicKey = KeyParser.ParsePublicKeyDer(publicKeyBytes);
                byte[] sharedSecret             = KeyDerivation.ComputeSharedSecret(privateKey, publicKey);
            });
        }