基于混沌序列与DNA突变原理的彩色图像加密方案  

Color image encryption scheme based on chaotic sequences and DNA mutation principle

作　　者：郝晋 王伟[2] 李庆宇 曹颖鸿 HAO Jin;WANG Wei;LI Qingyu;CAO Yinghong(School of Information Science and Engineering, Dalian Polytechnic University, Dalian 116034, China;School of Mechanical Engineering and Automation, Dalian Polytechnic University, Dalian 116034, China;Army Representative Office of Shenyang Military Representative Bureau in Dalian, Dalian 116033, China)

机构地区：[1]大连工业大学信息科学与工程学院,辽宁大连116034 [2]大连工业大学机械工程与自动化学院,辽宁大连116034 [3]陆装沈阳军代局驻大连地区军代室,辽宁大连116033

出　　处：《大连工业大学学报》2021年第3期214-221,共8页Journal of Dalian Polytechnic University

基　　金：辽宁省高等学校基本科研项目(2017J065).

摘　　要：为了确保图像信息的安全传输,基于三维分数阶简化统一混沌系统与DNA突变原理提出了一种彩色图像加密方案。通过相图、分岔图、李雅普诺夫指数谱和复杂性对三维分数阶简化统一系统的动力学特性进行了研究。同时通过三维分数阶简化统一混沌系统生成的伪随机序列对彩色图像置乱,并使用DNA突变原理算法对像素值进行扩散。利用密钥空间、相关性、信息熵等方法分析了所提加密算法的安全性。数值仿真结果表明,该算法具有良好的安全性。Based on the three-dimensional fractional order simplified unified chaotic system and DNA mutation principle,a color image encryption scheme was proposed to further improve the transmission security of image information.The phase diagram,bifurcation diagram,Lyapunov exponential spectrum and complexity are used to study the dynamic characteristics of the three-dimensional fractional simplified unified system.The pseudo-random sequence generated by the three-dimensional fractional simplified unified chaotic system scrambles the color image,and the DNA mutation principle algorithm was used to diffuse the pixel value.The key space,correlation,information entropy and other methods are used to analyze the security of the proposed encryption algorithm.Numerical simulation results showed that the algorithm has good security.

关 键 词：分数阶简化统一混沌系统 DNA突变原理 图像加密算法 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]