基于三维混沌模型的图像加密算法  

Image Encryption Algorithm Based on 3D Chaotic Model

作　　者：王玉银[1] WANG Yuyin(School of Information Engineering,Bowen College of Management of Guilin University of Technology,Guilin 541000,China)

机构地区：[1]桂林理工大学博文管理学院信息工程学院,广西桂林541000

出　　处：《微型电脑应用》2021年第3期67-69,共3页Microcomputer Applications

基　　金：广西高校中青年教师科研基础能力提升项目(2019KY1063)。

摘　　要：图像加密算法研究对图像信息安全十分重要,当前图像加密算法安全性差,易受到各种攻击。为了解决当前图像加密算法存在的缺陷,获得更优的图像加密结果,提出了基于三维混沌模型的图像加密算法。首先分析当前图像加密算法的研究进展,找到引起图像加密效果不佳的原因,然后采集待加密图像,采用三维混沌模型产生混沌序列,利用产生的混沌序列对待加密图像进行置乱处理,实现图像加密,最后进行了图像加密的仿真对比测试。测试结果表明,通过这种算法进行加密后,肉眼无法看出加密图像和原始图像的相关性。相对于对比算法,该算法的密钥空间更大,可以更好的抵抗各种攻击行为,大幅度提高了图像的安全性。Image encryption algorithm is of great significance to the security of image information.The current image encryption algorithm has poor security and is vulnerable to various attacks.In order to solve these defects and obtain better image encryption results,an image encryption algorithm based on three-dimensional chaotic model is proposed.Firstly,the current research progress of image encryption algorithm is analyzed,and the reasons for the poor image encryption effect are pointed out.Then,the images to be encrypted are collected,and the chaotic sequence is used to generate the chaotic sequence,and the chaotic sequence is used to scramble the encrypted image to realize image encryption.Finally,the simulation contrast test of image encryption is carried out.The results show that:after encryption,the naked eye cannot see the correlation between the encrypted image and the original image.Compared with the contrast algorithm,the key space of the algorithm in this paper is larger,which can better resist various attacks and greatly improve the security of the image.

关 键 词：图像加密 信息安全 混沌系统 抗攻击性 密钥空间 

分 类 号：TP317.4[自动化与计算机技术—计算机软件与理论]