public void EnsureCompatAes()
{
RijndaelManaged r = new RijndaelManaged();
foreach (int blksz in AllKeySizes(r.LegalBlockSizes))
{
r.BlockSize = blksz;
r.GenerateIV();
foreach (int keysz in AllKeySizes(r.LegalKeySizes))
{
r.KeySize = keysz;
r.GenerateKey();
ModifiedRijndael modified = ModifiedRijndael.Create(typeof(ModifiedRijndael).FullName);
modified.BlockSize = r.BlockSize;
modified.KeySize = r.KeySize;
modified.IV = r.IV;
modified.Key = r.Key;
modified.Padding = r.Padding;
modified.Mode = r.Mode;
TestEncryptDecrypt(r, modified);
TestEncryptDecrypt(modified, r);
}
}
}
private void TestAes256CBC(bool enc, string key, string iv, string input, string expect)
{
ModifiedRijndael r = ModifiedRijndael.Create();
r.Mode = CipherMode.CBC;
r.Padding = PaddingMode.None;
r.BlockSize = iv.Length / 2 * 8;
r.IV = HexEncoding.DecodeBytes(iv);
r.KeySize = key.Length / 2 * 8;
r.Key = HexEncoding.DecodeBytes(key);
ICryptoTransform xf = enc ? r.CreateEncryptor() : r.CreateDecryptor();
byte[] result = xf.TransformFinalBlock(HexEncoding.DecodeBytes(input), 0, input.Length / 2);
byte[] test = HexEncoding.DecodeBytes(expect);
Assert.AreEqual(0, BinaryComparer.Compare(test, result));
}
public void TestCycleAll()
{
ModifiedRijndael r = new ModifiedRijndael();
foreach (int blksz in AllKeySizes(r.LegalBlockSizes))
{
r.BlockSize = blksz;
r.GenerateIV();
Assert.AreEqual(blksz, r.IV.Length * 8);
foreach (int keysz in AllKeySizes(r.LegalKeySizes))
{
r.KeySize = keysz;
r.GenerateKey();
Assert.AreEqual(keysz, r.Key.Length * 8);
r.Rounds = r.NormalRounds;
TestEncryptDecrypt(r, r);
r.Rounds = r.MaxRounds;
TestEncryptDecrypt(r, r);
}
}
}
