Org.BouncyCastle.Crypto.Digests.RipeMD128Digest.FF1 C# (CSharp) Method

        private int FF1(
            int a,
            int b,
            int c,
            int d,
            int x,
            int s)
        {
            return RL(a + F1(b, c, d) + x, s);
        }