string username = "bryan";
            string password = "test";

            HMACMD5 stage1 = new HMACMD5(Encoding.ASCII.GetBytes(username));
            byte[] hash1 = stage1.ComputeHash(Encoding.ASCII.GetBytes(password));

            ASCIIEncoding encode1 = new ASCIIEncoding();
            //string y = byte.Parse("y");
            string s = "s";

            //encode1.GetBytes(
           // byte y2 = byte.Parse(y);
           // byte s2 = byte.Parse(s);
            char[] chars = {'y' , 's'};
            byte[] salt = encode1.GetBytes(chars);
            HMACMD5 stage2 = new HMACMD5(salt);
            byte[] hash2 = stage2.ComputeHash(hash1);


            string hashvalue = hash2.ToString() ;

            Console.WriteLine(hashvalue);
            Console.Read();