public FeistelCipher(int keySize, FeistelType feistelType, CipherMode cipherMode)
{
_feistelType = feistelType;
_cipherMode = cipherMode;
_key = GenerateKey(keySize);
_blockSize = _key.Length * ((feistelType == FeistelType.ClassicFeistel) ? 2 : 4);
if (cipherMode == CipherMode.CBC)
{
_IVcbc = GenerateIV(_blockSize);
}
if (cipherMode == CipherMode.CFB)
{
_IVcfb = GenerateIV(_blockSize);
}
}
public FeistelCipher(byte[] key, FeistelType feistelType, CipherMode cipherMode) : this(key.Length, feistelType, cipherMode)
{
if (key.Length % 2 != 0)
{
throw new Exception("Key size must be multiple of 2 size!");
}
_key = key;
_blockSize = key.Length * ((feistelType == FeistelType.ClassicFeistel) ? 2 : 4);
if (cipherMode == CipherMode.CBC)
{
_IVcbc = GenerateIV(_blockSize);
}
if (cipherMode == CipherMode.CFB)
{
_IVcfb = GenerateIV(_blockSize * 4);
}
}
