public void TestTextEncryption()
        {
            // Test failed somehow.
            // UPDATE: This test unexpectedly passed. I guess it's due to the BigInteger package update.
            string message = "This is to test Paillier encryption and hopefully this message contains more than 2 blocks please please please please please please please please please please please pleaseplease please please pleaseplease please please please          ";
            PaillierPaddingMode padding = PaillierPaddingMode.Zeros;

            var plaintext = Encoding.Default.GetBytes(message);

            Paillier algorithm = new PaillierManaged();

            for (int keySize = 384; keySize <= 1088; keySize += 8)
            {
                algorithm.KeySize = keySize;
                algorithm.Padding = padding;

                Paillier encryptAlgorithm = new PaillierManaged();
                encryptAlgorithm.FromXmlString(algorithm.ToXmlString(false));

                var ciphertext = encryptAlgorithm.EncryptData(plaintext);

                Paillier decryptAlgorithm = new PaillierManaged();
                decryptAlgorithm.FromXmlString(algorithm.ToXmlString(true));

                var candidatePlaintext = decryptAlgorithm.DecryptData(ciphertext);

                var strip_zeros = StripTrailingZeros(candidatePlaintext, plaintext.Length);

                CollectionAssert.AreEqual(plaintext, strip_zeros);
            }
        }
Esempio n. 2
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    public static void TestTextEncryption(string message = "This is to test Paillier encryption and hopefully this message contains more than 2 blocks please please please please please please please please please please please pleaseplease please please pleaseplease please please please          ",
        int keySize = 384, PaillierPaddingMode padding = PaillierPaddingMode.Zeros)
    {
        Console.WriteLine();
        Console.WriteLine("-- Testing string encryption ---");

        var plaintext = Encoding.Default.GetBytes(message);

        Paillier algorithm = new PaillierManaged();

        algorithm.KeySize = keySize;
        algorithm.Padding = padding;

        var parametersXML = algorithm.ToXmlString(true);
        Console.WriteLine("\n{0}\n", PrettifyXML(parametersXML));

        Paillier encryptAlgorithm = new PaillierManaged();
        encryptAlgorithm.FromXmlString(algorithm.ToXmlString(false));

        var ciphertext = encryptAlgorithm.EncryptData(plaintext);

        Paillier decryptAlgorithm = new PaillierManaged();
        decryptAlgorithm.FromXmlString(algorithm.ToXmlString(true));

        var candidatePlaintext = decryptAlgorithm.DecryptData(ciphertext);

        var strip_zeros = StripTrailingZeros(candidatePlaintext, plaintext.Length);

        Console.WriteLine("Original string:  '{0}'", message);
        Console.WriteLine("Decrypted string: '{0}'", Encoding.Default.GetString(candidatePlaintext));
        //Console.WriteLine("Byte arrays equal: {0}", plaintext.SequenceEqual(candidatePlaintext));
        Console.WriteLine("Byte arrays equal: {0}", plaintext.SequenceEqual(strip_zeros));
        Console.WriteLine();
    }