A REVIEW OF SECURE SMS BASED M-COMMERCE

Mobile devices have revolutionised the world. They are now being used for M-Commerce applications. Their affordability, high availability, and usage convenience has made SMS based M-Commerce to take over e-commerce. Nowadays it is used as an alternative for online transaction systems. The SMS facility available in mobile phones is used for communication between client and server modules. The regular encryption and decryption algorithms cannot be used as mobile devices have limited memory and processing power. Keeping these limitations in mind a new framework is proposed. It involves suitable encryption and decryption algorithms and a frame structure. The proposed framework is implemented for a banking application. The user sends the SMS after encryption to the bank server through his mobile phone. The bank server is programmed to poll the modem for messages. On the arrival of a request, the bank server decrypts and authenticates the message before servicing it. The serviced reply is again secured by encryption before the transaction, details are sent back to the client as another SMS using the modem. The client decrypts the received messages and displays appropriate results to the user.