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);
}
}
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();
}
