A new image encryption algorithm based on two-dimensional chaotic maps

In order to improve the security of image encryption,this paper analyzed the image encryption based on two-dimensional chaotic maps and proposed a new image encryption algorithm.Methods including adding diffusion mechanism,changing the design of key and developing composite encryption system were used to solve the problems in the image encryption of two-dimensional chaotic maps,such as beriodicity no diffusion and the real key space littler than the theoretical value.This paper formulized the Baker map.Then it proposed a new image encryption based on Baker map.The simulation results show that the proposed encryption algorithm is valid and fit for other two-dimensional chaotic map.