A Novel S-Box Dynamic Design Based on Nonlinear-Transform of 1D Chaotic Maps

In this paper, a method to enhance the dynamic characteristics of one-dimension (1D) chaotic maps is first presented. Linear combinations and nonlinear transform based on existing systems (LNECS) are introduced. Then, numerical map (LCLS), Logistic Sine map, given. Through analysis bifurcation diagram, Lyapunov exponent (LE), Sample entropy (SE), we can see that CLS has overcome shortcomings low-dimensional system be used in field cryptology. addition, construction eight functions designed obtain an S-box. Finally, five security criteria S-box shown, which indicate proposed paper strong encryption characteristics. The research helpful for development cryptography study such as methods systems.