Image encryption algorithm based on bit-plane scrambling and multiple chaotic systems combination

Abstract

In order to realize the scrambling aim of combination of pixels position substitution and the pixels values change, and moreover, in order to make up this deficiency which the low security of image encryption using one-dimensional chaotic system to encrypt digital image, a digital image encryption algorithm based on bit plane scrambling and multiple chaotic systems combination is proposed. Firstly, we generate integer sequence which as parameters and iteration times of general Arnold map to shuffle the positions of each bit-plane pixels by using 4D hyper-chaotic system. Then we generate random integer vectors to shuffle the positions of the rows and columns for each bit-plane image by using two dimensional Logistic map. Finally, the scrambled gray image is reconstructed from those shuffled bit-plane images. The experiment results demonstrate that the proposed image encryption algorithm has the advantages of large key space and very sensitivity with respect to the secret key and original image. The encryption system possesses perfect confusion properties and it can resist the various attacks. It shows that the proposed scheme is of high security.