基于哈希和DNA编码的彩色图像混沌加密算法  

Hyper-chaotic color image encryption algorithm based on Hash and DNA coding

作　　者：袁立[1,2] 谢俐 龙颖[3] 胡春强 蒋淘金[4] YUAN Li;XIE Li;LONG Ying;HU Chunqiang;JIANG Taojin(School of Information Engineering,Chongqing Electric Power College,Chongqing 400053,P.R.China;School of Big Data and Software Engineering,Chongqing University,Chongqing 401331,P.R.China;Department of Electronic Information and Financial Business,Chongqing Vocational College of Applied Technology,Chongqing 410520,P.R.China;Traffic and Patrol Police Corps of Chongqing Public Security Bureau,Chongqing 400054,P.R.China)

机构地区：[1]重庆电力高等专科学校信息工程学院,重庆400053 [2]重庆大学大数据与软件学院,重庆401331 [3]重庆应用技术职业学院电子信息与财经商务系,重庆410520 [4]重庆市公安局交巡警总队,重庆400054

出　　处：《重庆大学学报》2021年第7期55-63,共9页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(61702062);重庆市技术创新及应用发展专项重点项目(cstc2019jscxmbdxX0044);重庆市基础科学与前沿技术研究专项(cstc2018jcyjAX0334);重庆市留学人员回国创业创新计划(cx2018015);中央高校基本科研前沿交叉专项(2019CDQYRJ006);重庆市教育委员会科研基金资助(KJQN201802602)。

摘　　要：彩色图像的安全性一直受到学者的关注。针对彩色图像加密算法置乱效果不佳、扩散特性不强、抵御统计攻击能力较弱等问题,提出了一种基于哈希和DNA编码的彩色图像混沌加密算法。运用哈希函数生成Arnold混沌映射的参数,将Arnold混沌映射和Logistic混沌映射结合,对图像进行R、G、B3个维度的置乱,再利用DNA编码对图像进行混乱处理。理论分析和计算机仿真表明:本文的算法具有良好的加密效果,且对统计、差分攻击具有很好的抵御效果。The security of color image has always been concerned by scholars.To deal with the defects of traditional color image encryption algorithm,such as poor scrambling effect,weak diffusion characteristics and resistance to statistical attacks,this paper presents a Hyper-chaotic Color Image Encryption Algorithm based on Hash and DNA coding.In the proposed algorithm,the parameters of Arnold chaotic map are generated by hash algorithm first;then,combined with Arnold chaotic map and Logistic chaotic map,the image is scrambled in three dimensions of R,G,and B;Finally,the image is chaotically processed using DNA coding.The theoretical analysis and computer simulation show that the proposed algorithm has good encryption effect,and it has good resistance to statistical and differential attacks.

关 键 词：混沌映射 DNA编码 图像加密 加密算法 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]