标题：Chaos-based image encryption algorithm with orbit perturbation and dynamic state variable selection mechanisms
作者：Li, Huijuan; Wang, Yurong; Zuo, Zhengwei
作者机构：[Li, Huijuan; Zuo, Zhengwei] Henan Univ Sci & Technol, Sch Phys & Engn, Luoyang 471023, Henan, Peoples R China.; [Wang, Yurong] Shandong Univ, Sch I 更多
通讯作者：Li, Huijuan;Li, HJ
通讯作者地址：[Li, HJ]Henan Univ Sci & Technol, Sch Phys & Engn, Luoyang 471023, Henan, Peoples R China.
来源：OPTICS AND LASERS IN ENGINEERING
关键词：Dynamic state variable selection; Image encryption; Orbit perturbation;; Permutation-diffusion architecture; Two-dimensional; logistic-adjusted-sine map
摘要：In this paper, we propose a novel chaos-based image encryption algorithm with the orbit perturbation and dynamic state variable selection mechanisms. The two-dimensional logistic-adjusted-sine map is employed to generate pseudo-random numbers. Using an auxiliary variable, the orbit of the chaotic map is perturbed continuously by the previously processed pixel and one of two state variables is selected to generate the keystream. Consequently, the keystream depends on not only the initial condition and control parameter of the chaotic map, but also on the information in the plain and cipher images, and thus, the algorithm is highly sensitive to both the images. A number of simulations were conducted to verify the effectiveness and security of the algorithm. Moreover, the proposed algorithm provides excellent encryption performance in only one round.