基于超混沌系统的自适应图像加密算法

doi:10.3969/j.issn.1006-2475.2014.07.031

计算机与现代化

基于超混沌系统的自适应图像加密算法

(江西省水利科学研究院，江西南昌 330029)

收稿日期:2014-04-29 出版日期:2014-07-16 发布日期:2014-07-17
作者简介:李伊林（1984-），男，江西宜春人，江西省水利科学研究院信息与自动化研究所信息系统技术研究室主任，学士，研究方向：水利信息化。

Self-adaptive Image Encryption Algorithm Based on Hyper-chaotic System

(Jiangxi Provincial Hydraulic Research Institute, Nanchang 330029, China)

Received:2014-04-29 Online:2014-07-16 Published:2014-07-17

摘要/Abstract

摘要： 基于超混沌系统提出一种自适应图像加密算法。先对超混沌信号进行改造处理，并根据明文像素信息对序列进行变换，使得密钥序列对明文图像敏感；然后以前一个加密像素为基础，通过非线性运算产生中间密钥自适应加密后一个像素，直至所有像素加密完成；最后分别从统计特性、抗差分攻击、密钥敏感及密钥空间和执行效率对算法进行仿真分析，结果显示该算法具有安全性高、运行效率高等特点。

关键词: 超混沌系统, 图像加密, 自适应加密

Abstract: This paper presents a self-adaptive image encryption algorithm based on hyper-chaotic system. Firstly, the hyper-chaotic sequences which are pretreated are transformed according to the plaintext pixel information that result in both key sensitivity and plaintext sensitivity; then, the last encrypted pixel is used to produce intermediate key through nonlinear operation to encrypt the next pixel adaptively, until all pixels are encrypted completely; finally, the simulation analyses are performed using statistical property, anti-differential attacks, key sensitivity and key space and algorithm efficiency. Experimental results show that the algorithm is secure and efficient.

Key words: hyper-chaotic system, image encryption, self-adaptive image encryption

中图分类号:

TP309.7

李伊林. 基于超混沌系统的自适应图像加密算法[J]. 计算机与现代化, doi: 10.3969/j.issn.1006-2475.2014.07.031.

LI Yi-lin. Self-adaptive Image Encryption Algorithm Based on Hyper-chaotic System[J]. Computer and Modernization, doi: 10.3969/j.issn.1006-2475.2014.07.031.

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基于超混沌系统的自适应图像加密算法

Self-adaptive Image Encryption Algorithm Based on Hyper-chaotic System

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