protected override byte[] DecodeBytes(byte[] data, SecureString password)
{
using (var fish = new Twofish())
{
var key = HashPassword(password, KEY_SIZE);
var iv = data.Take(IV_SIZE).ToArray();
fish.Mode = CipherMode.CBC;
fish.Key = key;
fish.IV = iv;
var decryptor = fish.CreateDecryptor(key, iv);
using (var msDecrypt = new MemoryStream(data.Skip(IV_SIZE).ToArray()))
using (var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
return TrimRightNull(ReadToEnd(csDecrypt));
}
}
}
protected override byte[] EncodeBytes(byte[] data, SecureString password)
{
using (var fish = new Twofish())
{
var key = HashPassword(password, KEY_SIZE);
var iv = GenerateSalt(IV_SIZE);
fish.Mode = CipherMode.CBC;
fish.Key = key;
fish.IV = iv;
var encryptor = fish.CreateEncryptor(key, iv);
using (var msEncrypt = new MemoryStream())
{
using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
using (var swEncrypt = new BinaryWriter(csEncrypt))
{
swEncrypt.Write(data);
}
return Concat(iv, msEncrypt.ToArray());
}
}
}