private void CheckTestVector_RFC5794(String[] tv)
{
string name = "'" + tv[0] + "'";
IBlockCipher c = new AriaEngine();
int blockSize = c.GetBlockSize();
IsTrue("Wrong block size returned from getBlockSize() for " + name, 16 == blockSize);
KeyParameter key = new KeyParameter(Hex.Decode(tv[1]));
byte[] plaintext = Hex.Decode(tv[2]);
byte[] ciphertext = Hex.Decode(tv[3]);
IsTrue("Unexpected plaintext length for " + name, blockSize == plaintext.Length);
IsTrue("Unexpected ciphertext length for " + name, blockSize == ciphertext.Length);
c.Init(true, key);
byte[] actual = new byte[blockSize];
int num = c.ProcessBlock(plaintext, 0, actual, 0);
IsTrue("Wrong length returned from processBlock() (encryption) for " + name, blockSize == num);
IsTrue("Incorrect ciphertext computed for " + name, Arrays.AreEqual(ciphertext, actual));
c.Init(false, key);
num = c.ProcessBlock(ciphertext, 0, actual, 0);
IsTrue("Wrong length returned from processBlock() (decryption) for " + name, blockSize == num);
IsTrue("Incorrect plaintext computed for " + name, Arrays.AreEqual(plaintext, actual));
}
private void CheckRandomRoundtrips()
{
AriaEngine ce = new AriaEngine();
AriaEngine cd = new AriaEngine();
byte[] txt = new byte[ce.GetBlockSize()];
byte[] enc = new byte[ce.GetBlockSize()];
byte[] dec = new byte[ce.GetBlockSize()];
for (int keyLen = 16; keyLen <= 32; keyLen += 8)
{
byte[] K = new byte[keyLen];
R.NextBytes(K);
KeyParameter key = new KeyParameter(K);
ce.Init(true, key);
cd.Init(false, key);
R.NextBytes(txt);
for (int i = 0; i < 100; ++i)
{
ce.ProcessBlock(txt, 0, enc, 0);
cd.ProcessBlock(enc, 0, dec, 0);
IsTrue(Arrays.AreEqual(txt, dec));
Array.Copy(enc, 0, txt, 0, enc.Length);
}
}
}