A New Image Encryption Algorithm Based on Multi Chaotic System

Abstract

n recent years, encryption technology has been developed rapidly and manyimage encryption methods have been put forward. The chaos-based imageencryption technique is a modern encryption system for images. To encrypt images,it uses random sequence chaos, which is an efficient way to solve the intractableproblem of simple and highly protected image encryption. There are, however, someshortcomings in the technique of chaos-based image encryption, such limitedaccuracy issue. The approach focused on the chaotic system in this paper is toconstruct a dynamic IP permutation and S-Box substitution by following steps. Firstof all, use of a new IP table for more diffusion of all image pixels based on a 1Dlogistic map to build IP table. Secondly, a new S-Box based on 2D-Henon chaoswas created using more confusion to replace G-channel image data. Finally, designof a modern image encryption approach. This approach uses the key processconfusion and diffusion operation and depend on IP and S-Box proposals in theencryption process and several shuffling operations using the 3D- Lornez chaostheory. Theoretical research and simulation suggest that starting sensitivity value ofthis method is high, has high protection, and encryption speed. Moreover, it alsoholds the value of the neighboring RGB close to zero. The studies show that theinformation security capabilities would be both safer and more efficient, as a resultof our image quality assessment study. Number of Differential Pixel Rate ChangeAttacks (NPSR), Unified Average Altered Intensity (UACI), are quality and strengthof encryption processing are proved by pixel correlation, Entropy to be good results.