private static void ShowRijndaelBookTestVectors()
{
WriteHeader("Rijndael Book Test");
Console.WriteLine("Here are the test vectors from Appendix D of \"The Design of Rijndael\" book.");
Console.WriteLine("(Note how there are more variants than AES allows)");
Console.WriteLine();
for (int keyLength = 128; keyLength <= 256; keyLength += 32)
{
for (int blockLength = 128; blockLength <= 256; blockLength += 32)
{
Console.WriteLine("block length {0} key length {1}", blockLength, keyLength);
byte[] blockBytes = new byte[blockLength / Constants.BitsPerByte];
byte[] keyBytes = new byte[keyLength / Constants.BitsPerByte];
var encrypted = Rijndael.Encrypt(blockBytes, keyBytes);
ByteUtilities.WriteBytes(encrypted);
var decrypted = Rijndael.Decrypt(encrypted, keyBytes);
for (int i = 0; i < decrypted.Length; i++)
{
if (decrypted[i] != 0)
{
throw new CryptographicException("The decrypted Rijndael book values were not all zero.");
}
}
var encryptedAgain = Rijndael.Encrypt(encrypted, keyBytes);
ByteUtilities.WriteBytes(encryptedAgain);
var decryptedAgain = Rijndael.Decrypt(encryptedAgain, keyBytes);
ByteUtilities.AssertBytesEqual(decryptedAgain, encrypted);
Console.WriteLine();
}
}
Console.WriteLine();
}
/// <summary>
/// Decrypts a block of data.
/// </summary>
/// <param name="input">The ciphertext block.</param>
/// <returns>The resulting plaintext.</returns>
public byte[] Decrypt(byte[] input)
{
return(_Rijndael.Decrypt(input));
}
