基于双超混沌系统的分块图像加密方案  

Block image encryption scheme based on double hyperchaotic system

作　　者：张爽 李震 ZHANG Shuang;LI Zhen(Faculty of Big Data and Information Engineering,Guiyang Institute of Humanities and Technology,Guiyang 550025,China;College of Big Data and Information Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵阳人文科技学院大数据与信息工程学院,贵阳550025 [2]贵州大学大数据与信息工程学院,贵阳550025

出　　处：《智能计算机与应用》2024年第4期96-101,共6页Intelligent Computer and Applications

基　　金：贵阳人文科技学院校级科研基金项目(2023rwjs032);贵州科技重大专项计划(20183001);贵州省科技计划项目资助(黔科合基础-ZK[2023]一般053);贵州大学引进人才科研基金资助(贵大人基合字(2022)14号)。

摘　　要：为提高混沌图像加密性能,本文基于超混沌LSCM系统和超混沌SLIM系统提出一种新型混沌图像加密方案。该方案包括两轮置乱一轮扩散,利用超混沌LSCM系统依次完成图像分块行置乱与列置乱;在外部密钥的控制下调用超混沌SLIM系统完成CBC一轮扩散。仿真实验、χ2检验、相关系数分析、密钥敏感性分析和信息熵分析的结果表明,本方案具有较好的随机性、密钥敏感性、可有效抵抗统计分析攻击。In order to improve the performance of chaotic image encryption,this paper proposes a new chaotic image encryption scheme based on hyperchaotic LSCM system and hyperchaotic SLIM system.The paper consists of two rounds of scrambling and one round of diffusion.This paper uses hyperchaotic LSCM system to complete the image block row scrambling and column scrambling successively.In the control of external keys,this paper uses hyperchaotic SLIM system to complete the CBC round diffusion.The results of simulation experiment,χ2 test,correlation coefficient analysis,key sensitivity analysis and information entropy analysis show that this paper has good randomness,key sensitivity and can effectively resist statistical analysis attacks.

关 键 词：图像加密 超混沌LSCM系统 超混沌SLIM系统 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]