Org.BouncyCastle.Crypto.Engines.TwofishEngine.LFSR2 C# (CSharp) Метод

        private  int LFSR2(int x)
        {
            return (x >> 2) ^
                    (((x & 0x02) != 0) ? GF256_FDBK_2 : 0) ^
                    (((x & 0x01) != 0) ? GF256_FDBK_4 : 0);
        }