SMS Security for Android Mobile Using Combine Cryptographic Algorithms

Abstract: This work relates to an alternative solution that provides a peer-to-peer SMS security that guarantees provision of confidentiality, authentication, integrity and non-repudiation security services. Short message service (SMS) is a very popular and one of the easy to use communication technology for mobile phone devices. Originally, this service was not designed to transmit secured data, so the security was not an important issue during its design. Yet today, it is sometimes used to exchange sensitive information between communicating parties. A combined cryptographic scheme has been used which is combination of the Diffie Hellman Key Exchange, PBE, SHA and AES algorithms to achieve more robust functionality. For implementation, Android SDK has been developed in Android to introduce a required security services for SMS. The developed application is tested on real equipment such as a device supported to Android 2.2 version. It is able to achieve all the required cryptographic operations completely on the users‟ mobile phone in less than one second for each operation, and thus the mobile phone performance still remains effective.

Keywords: SMS Security, Combine Cryptographic Algorithms, Android, confidentiality, authentication, integrity and non repudiation.