文献类型：期刊文献

英文题名：An efficient chaotic image encryption algorithm based on a generalized Arnold map

作者：Ye, Guodong[1,2];Wong, Kwok-Wo[2]

机构：[1]Guangdong Ocean Univ, Coll Sci, Zhanjiang 524088, Guangdong, Peoples R China;[2]City Univ Hong Kong, Dept Elect Engn, Kowloon Tong, Hong Kong, Peoples R China

年份：2012

卷号：69

期号：4

起止页码：2079

外文期刊名：NONLINEAR DYNAMICS

收录：SCI-EXPANDED(收录号：WOS:000305401000044)、、EI(收录号：20123815446119)、Scopus(收录号：2-s2.0-84866054277)、WOS

基金：This work is part of the research project funded by the Science & Technology Program Foundation of Zhanjiang City of P.R. China (No. 2010C3112007). The authors would like to thank the editor and the anonymous reviewers for the useful comments and suggestions given.

语种：英文

外文关键词：Image encryption; Diffusion; Generalized Arnold map; Chaos

外文摘要：An efficient image encryption algorithm using the generalized Arnold map is proposed. The algorithm is composed of two stages, i.e., permutation and diffusion. First, a total circular function, rather than the traditional periodic position permutation, is used in the permutation stage. It can substantially reduce the correlation between adjacent pixels. Then, in the stage of diffusion, double diffusion functions, i.e., positive and opposite module, are utilized with a novel generation of the keystream. As the keystream depends on the processed image, the proposed method can resist known- and chosen-plaintext attacks. Experimental results and theoretical analysis indicate the effectiveness of our method. An extension of the proposed algorithm to other chaotic systems is also discussed.