public FileMutatedBKG(BasylKeyGenerator keyGen, Stream stream)
{
this.generator = keyGen;
this.cipher = new BESCipher(keyGen);
byte[] extra = new byte[100];
byte[] extra2 = new byte[64];
int amount = 65536;
while (amount != 0)
{
byte[] buffer = new byte[amount];
while (stream.Position + amount < stream.Length)
{
stream.Read(buffer, 0, amount);
cipher.EncryptRight(ref buffer);
cipher.EncryptLeft(ref extra);
cipher.EncryptRight(ref extra2);
}
cipher.EncryptLeft(ref extra2);
cipher.Shuffle(2);
amount /= 2;
}
prg = new PseudoRandomGenerator(256 * 256, "MutatedBKG", 500);
prg.ExpandKey(1);
prg.SetSeedKey(extra);
prg.SetSHA(extra2);
prg.Recycle();
stream.Close();
}
