A novel encryption scheme for secure SMS communication

Abstract

Security is a challenging issue in today’s digital world and for this, role of cryptography is significant. Cryptography secures data and information using an encryption algorithm and keys. There is always demand for a stronger encryption algorithm that would be very hard or impossible to crack without valid keys so that the privacy of intended sender and receiver information can be protected from hackers. This paper suggests a novel encryption scheme for SMS communication that uses multiple rounds of encryption to provide better privacy to the transmitted message against unauthorized access. Message integrity and authentication have been ensured by addition of authentication characters to the message. Keeping in mind the limited memory and processing capacity of mobile devices, the algorithm has been kept simpler and at the same time the strength of the scheme has been ensured with a stronger key and better mix of confusion and diffusion principles.