public MyTwofishManagedTransform(byte[] key)
{
if (key == null)
{
throw new ArgumentNullException("Key", "Key cannot be null.");
}
if (key.Length > 256 / 8)
{
throw new ArgumentOutOfRangeException("rgbKey", "Key size mismatch.");
}
byte[] paddingBuffer;
int paddingCount = 0;
if (key == null)
{
throw new ArgumentNullException("Key", "Key cannot be null.");
}
if (key.Length > 256 / 8)
{
throw new ArgumentOutOfRangeException("Key", "Key size mismatch.");
}
if (key.Length != 256 / 8 && key.Length != 192 / 8 && key.Length != 128 / 8)
{
if (key.Length < 256 / 8 && key.Length > 192 / 8)
{
paddingCount = 256 / 8 - key.Length;
}
if (key.Length < 192 / 8 && key.Length > 128 / 8)
{
paddingCount = 192 / 8 - key.Length;
}
if (key.Length < 128 / 8)
{
paddingCount = 128 / 8 - key.Length;
}
paddingBuffer = new byte[paddingCount];
List <byte> r = key.ToList();
r.AddRange(paddingBuffer);
key = r.ToArray();
}
int k = key.Length * 8 / 64;
var key32 = new uint[2 * k];
Buffer.BlockCopy(key, 0, key32, 0, key.Length);
this.Implementation = new TwofishImplementation(key32);
}
internal TwofishManagedTransform(byte[] key, CipherMode mode, byte[] iv, TwofishManagedTransformMode transformMode, PaddingMode paddingMode)
{
TransformMode = transformMode;
PaddingMode = paddingMode;
var key32 = new uint[key.Length / 4];
Buffer.BlockCopy(key, 0, key32, 0, key.Length);
if (iv != null)
{
var iv32 = new uint[iv.Length / 4];
Buffer.BlockCopy(iv, 0, iv32, 0, iv.Length);
Implementation = new TwofishImplementation(key32, iv32, mode);
}
else
{
Implementation = new TwofishImplementation(key32, null, mode);
}
}
