Renci.SshNet.Security.Cryptography.Ciphers.AesCipher.SubWord C# (CSharp) Méthode

        private static uint SubWord(uint x)
        {
            return (uint)S[x & 255]
                | (((uint)S[(x >> 8) & 255]) << 8)
                | (((uint)S[(x >> 16) & 255]) << 16)
                | (((uint)S[(x >> 24) & 255]) << 24);
        }