Abstract
The study on design and implementation of end to end encrypted Short Message Service (SMS) using hybrid cipher algorithm is motivated by high rate of insecurity of data observed during Short Message Service (SMS) on Mobile devices. SMS messages are one of the popular ways of communication. The aim therefore is to design a software for end to end encryption short message service (SMS) that can conceal message while on transit to another mobile device using Hybrid Cipher Algorithm on Android Operating System and implement it for security of mobile SMS. Hybrid encryption incorporates a combination of asymmetric and symmetric encryption to benefit from the strengths of each form of encryption. Various encryption algorithms have been discussed. Secondary sources were employed in gathering useful data. In this research work three methodologies are employed—Structured System Analysis Design Methodology (SSADM), Object Oriented Analysis Design Methodology (OOADM) and prototyping. With the help of the three cryptographic algorithms employed—Message digest 5 (MD5), Blowfish and Rivest-Shamir Adleman (RSA); integrity, confidentiality, authentication and security of messages were achieved. The messages encrypted by developed application are also resistant to brute force attack. The implementing programs were coded in Java.
Highlights
Information security is the process of protecting information
Hybrid encryption incorporates a combination of asymmetric and symmetric encryption to benefit from the strengths of each form of encryption
Message digest 5 (MD5) algorithm helps to achieve integrity of the message while Blowfish and Rivest Shamir Adleman (RSA) help to achieve confidentiality and authentication and provide more security when messages are sent over the network
Summary
Information security is the process of protecting information It protects its availability, privacy and integrity. Mobile communication devices have become common place during the past few years, integrating multiple wireless networking technologies to support additional functionality and services. One of the most important developments that have emerged from communications technology is Short Message Service (SMS). They are designed as part of Global System for Mobile communications (GSM). Clients are able to query their bank balances via Short Message Service (SMS) or conduct mobile payments. Short Message Service (SMS) technology suffers from some risks such as vulnerabilities, eavesdroppers and unauthorized access. We need to secure SMS messages and keep their contents private, without increasing their size
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