Org.BouncyCastle.Crypto.Digests.TigerDigest.RoundBCA C# (CSharp) Méthode

        private void RoundBCA(
            long    x,
            long    mul)
        {
            a ^= x ;
            b -= t1[(int)a & 0xff] ^ t2[(int)(a >> 16) & 0xff]
                    ^ t3[(int)(a >> 32) & 0xff] ^ t4[(int)(a >> 48) & 0xff];
            c += t4[(int)(a >> 8) & 0xff] ^ t3[(int)(a >> 24) & 0xff]
                    ^ t2[(int)(a >> 40) & 0xff] ^ t1[(int)(a >> 56) & 0xff];
            c *= mul;
        }