Color image encryption based on improved Henon hyperchaotic mapping

About the problems of all little blank, let droop complexity and small lyapunov index of two-dimensional Henon chaotic mapping. In this one article, an better Henon chaotic map is proposed, which adopts the classical scrambling diffusion structure. A replacement algorithm is designed to replace image pixels into different rows and columns, and a non-sequential diffusion algorithm is also designed. The performance simulation results show that the proposed encryption algorithm has large key space, high key sensitivity, uniform distribution of ciphertext statistical histogram, low correlation between adjacent pixels, information entropy close to the ideal value, strong anti-differential cryptanalysis ability and high security.