A REVIEW PAPER ON MULTIPLE-PICTURE ENCRYPTION ALGORITHMS

Abstract

This paper presents a new multiple-image encryption (MIE) algorithm based on the mixed image element and permutation, which can simultaneously encrypt any number of images, to enhance encryption efficiency and facilitate the secure transmission of multiple digital images by defining the pure image element and mixed image element. First, segment the original images into pure image elements; second, scramble all the pure image elements with the permutation produced by the piecewise linear chaotic map (PWLCM) system; third, combine mixed image elements into scrambled images; last, diffuse the content of mixed image elements by performing the exclusive OR (XOR) operation between scrambled images and the chaotic image g There is a comparison of two related algorithms. Experimental results and algorithm analyses show that the proposed MIE algorithm is very simple and efficient, which is suitable for practical image encryption.