public string revokCertifcate(string hostname)
        {
            int         requestID;
            string      serialnumber;
            SqlLite     sql  = new SqlLite();
            Certificate cert = new Certificate();

            try
            {
                requestID    = sql.returnCertInfo(hostname);
                serialnumber = sql.returnCertSerialnumber(hostname);
                sql.deleteCertRecord(requestID);
                cert.revokeCert(serialnumber);
                return("SUCCESS");
            }

            catch (Exception ex)
            {
                return(ex.Message);
            }
        }