文章基本信息

标题：A New Digital Image Encryption Algorithm Based on Improved Logistic Mapping and Josephus Circle
本地全文：下载
作者：Zhiben Zhuang ; Jing Wang ; Jingyi Liu 等
期刊名称：Journal of Computer and Communications
印刷版ISSN：2327-5219
电子版ISSN：2327-5227
出版年度：2018
卷号：06
期号：06
页码：31-44
DOI：10.4236/jcc.2018.66003
语种：English
出版社：Scientific Research Publishing
摘要：Digital image encryption based on Joseph circle and Chaotic system has become a hot spot in the research of image encryption. An encryption algorithm based on improved Josephus loop and logistic mapping is proposed to scrambling blocks in this paper. At first, the original image is scrambled by using logistic mapping to obtain the encrypted image, and then the encrypted image is divided into many blocks. Finally, the position of the blocked image is scrambled by using the improved Josephus ring to get the encrypted image. According to the experiments, the information entropy of the encrypted image reaches 7.99 and the adjacent correlations in three directions are within ±0.1. The experimental results show that the proposed algorithm has advantages of large key space, high key sensitivity and can effectively resist the attacks of statistical analysis and gray value analysis. It has good encryption effect on digital image encryption.
关键词：Digital Image Encryption;Image Block Scrambling;Josephus Loop;Logistic Mapping;Pixel Scrambling