Research on the Application of Fractional-Order Hyperchaotic Systems in Image Encryption
Yanling Sun, Baoxing Liu · 2024
Aiming at the security and reliability issues of color images in the process of transmission and storage, an image encryption method based on deformed fractional-order Chen hyperchaotic system diffusion combined with improved Arnold and Zig-Zag double scrambling is proposed. First, the color image is divided into three channels: R, G, and B. Arnold scrambling algorithms with different keys are used to scramble the three channels respectively. Secondly, the chaotic sequence generated iteratively by the deformed fractional Chen hyperchaotic system is used to diffuse the image, Zig-Zag scrambling operations are interspersed in it to ensure better encryption results. Simulation shows that with the improved encryption algorithm, the correlation coefficient in the horizontal, vertical and diagonal directions of the image is approximately 0, and the values of UACI and NPCR are close to ideal values. Experimental results show that the method in this paper has good statistical performance and high security. This ensures the robustness requirements of the image during transmission.