Image Encryption Based on A Novel Memristive Chaotic System with Super Wide Range and Multiple Image Morphing

Abstract

In this paper, we propose a 4D memristor-based chaotic system with super wide range, and explore its application in image encryption. Firstly, by analyzing the dynamical behavior of the memristor-based chaotic system, it is found that the system has a special attractor and that the maximum Lyapunov exponent of the system is increasing gradually in . Further, we apply the wide range and stable chaotic states of the proposed memristive chaotic system to cryptography to present an image encryption algorithm. All the ciphers used in the permutation-diffusion are drawn out by associating the plain image with the chaotic sequences. We treat the color image as a 3D matrix for multiple image morphing operations, so that the pixels of the RGB channels of the color image are highly mixed. Moreover, the Latin-cube based scrambling method is improved to enhance the generalizability of the cryptographic algorithm. The results of various simulation experiments indicated that the algorithm has excellent performance in terms of security.