SMS ENCRYPTION SYSTEM

Abstract

Nowadays, SMS is more and more common among mobile phone users. SMS is a text messaging service component of mobile phone, web, or mobile communication systems, using standardized communications protocols that allow the exchange of short text messages between fixed line or mobile phone devices. Users can used SMS to send or receive from a single person, or several persons, personal messages, email notifications, information services, school activity alerts, notification from teacher, job dispatches, and also stock alerts. However, the security issue of SMS’s is still an open challenging task. SMS is now a very common communication tool. The security protection of SMS messages is not yet that sophisticated and difficult to implement in practice. The confidentiality and integrity mechanisms are only specified as optional security measures that can be made available, but they are not mandatory requirements for SMS system implementation. In this paper, we have implemented three of block cipher
symmetric cryptography algorithms (i.e. AES algorithm, DES, and 3-DES) and compared between three of them in terms of encryption and decryption delay time. This provides a guideline for the choice of the most suitable cryptography algorithm for mobile communication on Android message application.