Spatial chaos-based image encryption design

作     者：LIU ShuTang SUN FuYan 

作者机构：College of Control Science and EngineeringShandong UniversityJi’nan 250061China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2009年第52卷第2期

页      面：177-183页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 60874009) the Foundation for the Author of National Excellent Doctoral Disser-tation of China (Grant No. 200444) 

主　　题：spatial chaos two-dimensional logistic map spatial bifurcation image encryption 

摘      要：In recent years, the chaos based cryptographic algorithms have suggested some new and efficient ways to develop secure image encryption techniques, but the drawbacks of small key space and weak security in one-dimensional chaotic cryptosystems are obvious. In this paper, permutation and sub- stitution methods are incorporated to present a stronger image encryption algorithm. Spatial chaotic maps are used to realize the position permutation, and to confuse the relationship between the ci- pher-image and the plain-image. The experimental results demonstrate that the suggested encryption scheme of image has the advantages of large key space and high security; moreover, the distribution of grey values of the encrypted image has a random-like behavior.