A novel chaos-based image encryption scheme

Abstract

Recently, the chaotic maps have been investigated in order to develop more secure encryption schemes. In this paper we propose a new image encryption scheme with a classic bi-modular architecture: a diffusion stage, in which the pixels of the plain image are shuffled using a random permutation generated with a new algorithm, and a confusion stage, in which the pixels are modified with a XOR–scheme. In both stages are used four piecewise linear chaotic maps with very good cryptographic properties. The results of its statistical analysis show that the proposed image encryption scheme provides an efficient and secure way for image encryption.