基于偏X型细胞自动机的图像加密方法

doi:10.13229/j.cnki.jdxbgxb201705043

吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (5): 1653-1660.doi: 10.13229/j.cnki.jdxbgxb201705043

基于偏X型细胞自动机的图像加密方法

梁士利¹, 柴宗谦¹, 张玲², 吴颜生¹, 曹春雷¹

1.东北师范大学物理学院,长春 130024;
2.长春理工大学理学院,长春 130024

收稿日期:2016-10-22 出版日期:2017-09-20 发布日期:2017-09-20
作者简介:梁士利(1968-),男,教授,博士.研究方向:信息安全.E-mail:lsl@nenu.edu.cn
基金资助:
国家自然科学基金项目(61370228)

Image encryption method based on partial X type cellular automaton

LIANG Shi-li¹, CHAI Zong-qian¹, ZHANG Ling², WU Yan-sheng¹, CAO Chun-lei¹

1.College of Physics,Northeast Normal University,Changchun 130024,China;
2.College of Science, Changchun University of Science and Technology,Changchun 130022,China

Received:2016-10-22 Online:2017-09-20 Published:2017-09-20

摘要/Abstract

摘要： 提出了一种基于二维二态五邻居可逆细胞自动机(CA)的图像加密算法。本方法首先对X型结构类型的 CA进行了分析测试,提出了具有明显密钥混淆效应的偏X2型结构CA;其次在进行CA每次迭代加密时,对迭代结果进行矩阵转置运算处理;随后采用具有混沌行为的9d62(hex)规则一维四邻居CA产生密钥图像;最后算法在CA边界条件中插入密钥信息,并参与细胞自动机加密迭代。实验结果表明,采用基于偏X2型CA结构和新型密钥设计,相比于传统的密钥与尾数据做单一异或的运算方法,提高了密钥在整个加密体系的参与度和敏感性,降低了CA迭代次数,明文扩散率提高了36.14%。

关键词: 图像处理技术, X2型结构CA, 图像加密, 扩散率

Abstract: In this paper, an image encryption algorithm based on two-dimensional, two state and five neighbor reversible Cellular Automaton (CA) is proposed. First, this method is applied to analyze several X type neighbor structures of CA, and a partial X type structure of CA is put forwarded, which has obvious key confounding effect. Second, in each CA encryption iteration, the results are processed with matrix transpose operation; then the key image with one-dimensional four neighbor CA is generated, which has chaotic behavior at the rules of 9d62 (hex). Finally, the key information is put into the CA boundary conditions, so that the key is involved in each cellular automaton iteration. Experimental results show that using partial X2 type CA structure and new model of key design can improve the sensitivity of the key in the encryption system. Compared with traditional single XOR operation, the new method can also reduce the number of CA iterations, thus, possessing advantages in plaintext diffusion rate and obfuscation key, the diffusion rate is increased by 36.14%.

Key words: image processing technology, X2 structure CA, image encryption, diffusion rate

中图分类号:

TP399

梁士利, 柴宗谦, 张玲, 吴颜生, 曹春雷. 基于偏X型细胞自动机的图像加密方法[J]. 吉林大学学报(工学版), 2017, 47(5): 1653-1660.

LIANG Shi-li, CHAI Zong-qian, ZHANG Ling, WU Yan-sheng, CAO Chun-lei. Image encryption method based on partial X type cellular automaton[J]. 吉林大学学报(工学版), 2017, 47(5): 1653-1660.

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基于偏X型细胞自动机的图像加密方法

Image encryption method based on partial X type cellular automaton

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