Enhancing Image Security during Transmission using Residue Number System and k-shuffle

Issah Zabsonre Alhassan,Gaddafi Abdul-Salaam,Salamudeen Alhassan,Edward Danso Ansong

doi:10.34198/ejms.4220.399424

Abstract

This paper proposes an algorithm that enhances the speed of transmission and secure images that are transmitted over internet or a network. The proposed cryptosystem uses a modified k-shuffling technique to scramble pixels of images and further decomposes them using Residue Number System. Simulations are done using two moduli sets with the modified k-shuffle technique. Analyses of results showed that both simulations could secure images without any loss of information and also the time taken for a complete encryption/decryption process is dependent on the moduli set. Among the chosen moduli sets, the even moduli set optimizes and completes execution using less time as compared to the traditional moduli set. The proposed scheme also showed resistance to statistical attacks (histogram, ciphertext, correlation attacks) and a significant reduction in the size of cipher images which enhances the speed of transmission over network.

Highlights

In the field of data communication, security and privacy remains the utmost concern over the years
Several encryption algorithms have been proposed by researchers to help secure images during transmission but according to Kumari et al [3], chaotic encryption algorithms are more secured than other schemes and are resistant to various statistical attacks; this means they are able to provide the security and privacy required during communication
A good chaotic encryption algorithm should have a high-level confusion and diffusion; diffusion to reduce the correlation between pixel values and confusion to further change the pixel values [5]

Summary

Introduction

In the field of data communication, security and privacy remains the utmost concern over the years. Several encryption algorithms have been proposed by researchers to help secure images during transmission but according to Kumari et al [3], chaotic encryption algorithms are more secured than other schemes and are resistant to various statistical attacks; this means they are able to provide the security and privacy required during communication. Others such as Advanced Encryption Standard (AES) and Data Encryption Standard (DES) are not suitable for image encryption because of their file size, spatial redundancy etc. This study is designed to use Residue Number System (RNS) and k-shuffle which is a card shuffling technique to formulate a new chaos image encryption algorithm

Digital Images

Image Cryptosystems based on Chaos

Residue Number System

The k-shuffle

Findings

Conclusion