文献类型：期刊文献

英文题名：An efficient pixel-level chaotic image encryption algorithm

作者：Ye, Guodong[1,2];Pan, Chen[2];Huang, Xiaoling[2];Mei, Qixiang[2]

机构：[1]Guangdong Ocean Univ, Fac Math & Comp Sci, Zhanjiang 524088, Peoples R China;[2]Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China

年份：2018

卷号：94

期号：1

起止页码：745

外文期刊名：NONLINEAR DYNAMICS

收录：SCI-EXPANDED(收录号：WOS:000445375700048)、、EI(收录号：20182305289632)、Scopus(收录号：2-s2.0-85048052196)、WOS

基金：The work described in this paper was supported by the National Natural Science Foundations of China (Nos. 61602124, 61702116), the Postdoctoral Science Foundation of China (No. 2017M611991), the Natural Science Foundations of Guangdong Province of China (Nos. 2016A030310333, 2015A030313614, 2015A030313620), the Science and Technology Planning Project of Guangdong Province of China (No. 2017A010101025), the Program for Scientific Research Start-up Funds of Guangdong Ocean University of China (No. R17037), the Special Funding Program for Excellent Young Scholars of Guangdong Ocean University of China (No. HDYQ2017006), and the Project of Enhancing School With Innovation of Guangdong Ocean University of China (GDOU2016050228).

语种：英文

外文关键词：PRD; Pixel-level; Chaotic map; Encryption algorithm; Security

外文摘要：In this paper, a new and efficient pixel-level image encryption algorithm is presented. In contrast to the traditional permutation-diffusion architecture, the proposed method enhances the connection between position shuffling for pixels and value changing for grayness. As a result, the separate attack becomes more difficult when attacking our structure of permutation-rewriting-diffusion (PRD). Before the diffusion operation, a rewriting function is applied to the permuted image in a simple way, which can be seen as a remedy for permutation's inability to change the frequency of pixels. Moreover, the keystream is designed dependent upon the plain-image. Therefore, the proposed method can disturb the chosen plain-image and known plain-image attacks. Experimental results together with security analysis also show good efficiency of the PRD mechanism. Compared to some bit-level-based image encryption algorithms, our method shows increased faster speed and satisfies the performance requirements of real-time communication.