Image Encryption using Modified 4 out of 8 Code and Chaotic Map
Sunil KumarK.M, Kiran Kiran, Anand U. Hiremath · International Journal of Computer Applications · 2013
Recently, several image encryption schemes based on chaotic maps have been proposed.Most of them hinder the system performance, security, and suffer from the small key space problem.This paper presents a image encryption using modified 4 out of 8 code and chaotic map.Generally image encryption involves permutation and substitution network.Here permutation is done by using chaotic map and using modified 4 out of 8 code carrier image is generated with the help of alpha-numeric keywords and also special characters.Substitution done by performing XOR operation between permuted image and carrier image to get a encrypted image.Simulations have been carried out and the results demonstrate the superior security and high efficiency of the proposed scheme.