[1]全俊杰,蔡清波*.一种基于Lorenz混沌系统的有效图像加密算法[J].泉州师范学院学报,2020,(02):43-52.
 QUAN Junjie,CAI Qingbo*.An Effective Image Rryptosystem Based on the Hyper Chaotic Lorenz System[J].,2020,(02):43-52.
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一种基于Lorenz混沌系统的有效图像加密算法()
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《泉州师范学院学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年02期
页码:
43-52
栏目:
数学·计算科学
出版日期:
2020-04-15

文章信息/Info

Title:
An Effective Image Rryptosystem Based on the Hyper Chaotic Lorenz System
文章编号:
1009-8224(2020)02-0043-10
作者:
全俊杰1蔡清波2*
1.厦门大学嘉庚学院 信息科学与技术学院,福建 漳州 363105; 2.泉州师范学院 数学与计算机科学学院,福建 泉州 362000
Author(s):
QUAN Junjie1 CAI Qingbo2*
1. School of Information Science & Technology,Xiamen University Tan Kah Kee College,Zhangzhou Fujian 363105,China; 2. School of Mathematics and Computer Science,Quanzhou Normal University,Quanzhou Fujian 362000,China
关键词:
Lorenz超混沌系统 DNA编码 图像加密
Keywords:
hyper chaotic Lorenz system DNA encoding color image encryption
分类号:
TP309.7
文献标志码:
A
摘要:
提出一种基于Lorenz超混沌系统和动态DNA编码的图像加密算法.首先利用SHA-384哈希函数生成混沌系统初始值,接着得到混沌随机变量序列,然后利用该序列构造DNA编码规则矩阵,使得图像上不同的像素点对应不同的DNA编码规则.为了提高安全性,引入基于随机数的DNA置乱机制,再进行一次置乱,最终得到密文图像.实验结果和安全性分析显示该算法能起到很好的置乱效果,并且能够抵抗多种攻击.
Abstract:
This paper presents a color image crypto system based on the Lorenz hyper-chaotic system and dynamic DNA coding.Firstly,the initial values of the chaotic system and four intermittent parameters are computed by the secret key K which is generated by SHA-384 hash function of the plain image.Secondly iterate the hyperchaotic system to get the chaotic sequences,then a DNA encoding matrix is obtained by the chaotic sequences,subsequently different pixels in the image correspond to different DNA coding rules.In order to improve the security,diffusion mechanism based on random number related to plaintext is introduced to diffuse the DNA matrix of the original image,and the color cipher image is obtained.Experimental results and security analysis demonstrate that our encryption algorithm has good performance and may resist against various typical attacks.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-09-07
通信作者:蔡清波(1981-),男,福建泉州人,教授,博士,主要从事逼近论与计算几何研究,E-mail: qbcai@126.com.
基金项目:国家自然科学基金(11601266); 福建省自然科学基金(2016J05017); 福建省高等学校新世纪优秀人才支持计划; 泉州市高层次人才创新创业项目(2018C087R); 厦门大学嘉庚学院校级孵化项目(2018L07)
更新日期/Last Update: 2020-04-15