一种基于混沌的新型图像加密算法

doi:10.16182/j.issn1004731x.joss.201803023

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (3): 954-961.doi: 10.16182/j.issn1004731x.joss.201803023

一种基于混沌的新型图像加密算法

李琳, 孔留勇

上海理工大学光电信息与计算机工程学院控制科学与工程系,上海200093

收稿日期:2016-04-13 出版日期:2018-03-08 发布日期:2019-01-02
作者简介:李琳(1983-),女,山东潍坊,博士,副教授,研究方向为多智能体系统控制、机器人控制、图像处理。
基金资助:
国家自然科学基金(61203143),沪江基金(C14002)

A New Image Encryption Algorithm Based On Chaos

Li Lin, Kong Liuyong

School of Optical-Electrical & Computer Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China

Received:2016-04-13 Online:2018-03-08 Published:2019-01-02

摘要/Abstract

摘要： 针对单一混沌系统安全性低问题,提出了一种基于Chen混沌系统,细胞自动机和DNA的图像加密算法。利用3-维 Chen混沌系统生成伪随机序列。在该序列改造的基础上完成对明文图像和细胞自动机的DNA动态编码。对明文图像DNA序列进行分块重组,以组为单位与细胞自动机DNA序列进行混合运算并引入密文交错扩散机制得到最终的DNA序列,将其解码后得到密文图像。进行了计算机仿真分析和对比,通过对密钥空间、敏感性、差分特性、信息熵的分析与测试,表明该算法安全性较好且易于实现,具有较大的应用前景。

关键词: 图像加密, 细胞自动机, 混沌系统, DNA编码

Abstract: In order to increase the security of single chaotic systems, this paper proposesa new image encryption algorithm based on Chen chaotic system, cellular automaton and DNA. The 3-dimension Chen chaotic system is used to generate a pseudo random sequence. The DNA dynamic encoding on plain-text image and cellular automation is completed based on the transformed sequence. The DNA sequence of the plain-text image is divided into blocks, which arethen reorganized. These new groups of the DNA sequence of plain-text are combined with the DNA sequence of cellular automation to carry out the mixed operation with the cipher-text cross diffusion mechanism so as to get the final DNA sequence. The encrypted image is obtained by decoding the obtainedfinal DNA sequence. The simulation results show thatthe algorithm has the advantages of simple structure, high security and is easier to achieve, so it has great application prospects.

Key words: image encryption, cellular automaton, chaos systems, DNA encoding

中图分类号:

TP309.7

李琳, 孔留勇. 一种基于混沌的新型图像加密算法[J]. 系统仿真学报, 2018, 30(3): 954-961.

Li Lin, Kong Liuyong. A New Image Encryption Algorithm Based On Chaos[J]. Journal of System Simulation, 2018, 30(3): 954-961.

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一种基于混沌的新型图像加密算法

A New Image Encryption Algorithm Based On Chaos

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