public static uint DecryptUInt(byte[] key, byte[] tweak, uint source, uint range = uint.MaxValue)
{
if (source >= uint.MaxValue)
{
throw new ArgumentException($"source should be less than {uint.MaxValue}");
}
if (source > range)
{
throw new ArgumentException($"source should be less than range");
}
BigInteger modulus = new BigInteger(range);
BigInteger sourceBI = new BigInteger(source);
BigInteger result = FE1.Decrypt(modulus, sourceBI, key, tweak);
return((uint)result);
}
public static ulong EncryptULong(byte[] key, byte[] tweak, ulong source, ulong range = ulong.MaxValue)
{
if (source >= ulong.MaxValue)
{
throw new ArgumentException($"source should be less than {uint.MaxValue}");
}
if (source > range)
{
throw new ArgumentException($"source should be less than range");
}
BigInteger modulus = new BigInteger(range);
BigInteger plain = new BigInteger(source);
BigInteger result = FE1.Encrypt(modulus, plain, key, tweak);
return((ulong)result);
}