计算机应用与软件2016，Vol.33Issue(9)：324-327,333,5.DOI:10.3969/j.issn.1000-386x.2016.09.075
一种新的基于混沌的彩色图像加密算法
A NEW CHAOTIC-BASED COLOUR IMAGE ENCRYPTION ALGORITHM
摘要
Abstract
We propose the use of a method to encrypt the colour image with scrambling diffusion which combines the traditional cat mapping and the chaotic sequence,the method overcomes the defects of cat mapping in periodicity and being vulnerable to chosen-plaintext attack.The algorithm uses the Logistic mapping and the Chebychev mapping.First,it uses the equilibrium of Chebychev mapping to generate the key which controls the parameter of Logistic mapping,and generates a variety of Logistic sequence with different parameters,then it uses the Logistic sequence to control the range of image scrambling,and employs Lorenz system to get the key and the scrambling times of every Arnold transform.When the scrambling is completed,the algorithm uses Lorenz system again to control the operation variables which are used in diffusion.Experimental simulations indicate that the algorithm has better scrambling diffusion effect on the image,and overcomes the shortcoming of cat mapping,it brings large key space,and can encrypt the image with high quality as well as resist common attacks.关键词
置乱扩散/Cat 映射/混沌序列/控制Key words
Scrambling diffusion/Cat map/Chaotic sequence/Control分类
信息技术与安全科学引用本文复制引用
谢国波,苏本卉..一种新的基于混沌的彩色图像加密算法[J].计算机应用与软件,2016,33(9):324-327,333,5.基金项目
广东省重大科技专项（2012A080103010）；广东省科技计划项目（2013B022200004，2013B090600035）。 （）
