private void performTest(int number, TestCase testCase)
{
byte[] plaintext = testCase.Plaintext;
byte[] output = new byte[plaintext.Length];
XSalsa20Engine engine = new XSalsa20Engine();
engine.Init(false, new ParametersWithIV(new KeyParameter(testCase.Key), testCase.Iv));
engine.ProcessBytes(testCase.Plaintext, 0, testCase.Plaintext.Length, output, 0);
if (!Arrays.AreEqual(testCase.Ciphertext, output))
{
Fail("mismatch on " + number, Hex.ToHexString(testCase.Ciphertext), Hex.ToHexString(output));
}
}
private byte[] EncryptXSalsa20Poly1305(byte[] bytes, byte[] key, byte[] nonce)
{
var salsa = new XSalsa20Engine();
var poly = new Poly1305();
salsa.Init(true, new ParametersWithIV(new KeyParameter(key), nonce));
byte[] subKey = new byte[key.Length];
salsa.ProcessBytes(subKey, 0, key.Length, subKey, 0);
byte[] output = new byte[bytes.Length + poly.GetMacSize()];
salsa.ProcessBytes(bytes, 0, bytes.Length, output, poly.GetMacSize());
poly.Init(new KeyParameter(subKey));
poly.BlockUpdate(output, poly.GetMacSize(), bytes.Length);
poly.DoFinal(output, 0);
return(output);
}