Development of an Encrypted Messaging Service within a Multimedia Virtual Learning System for Tertiary Institutions: Utilizing Hybrid Encryption Approaches

The study on design and development of end-to-end encrypted Short Message Service (SMS) using hybrid encryption algorithm was motivated by high rate of insecurity of data observed during Short Message Service (SMS) on Mobile devices. The aim of this study is to develop end to end encrypted Short Message Service (SMS) using hybrid encryption algorithm. This work discusses various encryption algorithms. Secondary sources of data were used for gathering of relevant literatures from internet search of published journals on security and mobile technologies. In this thesis two methodologies were employed – Structured systems Analysis Design Methodology (SSADM) and Object-Oriented Analysis and Design Methodology (OOADM). With the help of the two techniques (RSA and DES algorithm) employed; integrity, confidentiality, authentication and security of messages were achieved. The implementing programs were coded in Java. At the end of the thesis, security of data during Short Message Service (SMS) on mobile devices and also confidentiality, integrity and authentication in SMS were achieved.