Some Hashing functions

     public static string SHA1Hash(string to_be_hash)

        {

        SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();

        byte[] hash = sha1.ComputeHash(GetBytes(to_be_hash));

        string delimitedHexHash = BitConverter.ToString(hash);

        string hexHash = delimitedHexHash.Replace("-", "");

        return hexHash;

        }

        public static string HMACRIPEMD160Hash(string to_be_hash)

         {

             Guid g = new Guid("AD56BC66-3C2F-4B69-B9C9-1E0305D95E99");

             byte[] temp = null;

             using (HMACRIPEMD160 hmac = new HMACRIPEMD160(g.ToByteArray()))

             {

                 temp = hmac.ComputeHash(GetBytes(to_be_hash));

             }

             //return Convert.ToBase64String(temp);

             return ByteArrayToString(temp);

           }