As with any information processing system, authentication and reliability are considerations, online transaction system are generally more susceptible to direct attack and abuse than their offline counterparts. With the increasing popularity of the internet, the e-commerce market has grown rapidly in recent years. The Secure Electronic Transaction System to process securely electronic transaction is currently the main e-commerce application and due to increasing malicious activities, it requires fiddly approaches to be introduced. In this work, an algorithm is introduced which works to secure the critical information shared during the online transaction processing (OLTP).