一种基于伪特征的图像加密算法  

An image encryption algorithm based on pseudo features

作　　者：吕翔 陆岳锋 郭宇慧 楼梦佳 刘双[1] 强怡嘉 邓雨亭 付娜[1] LU Xiang;LU Yuefeng;GUO Yuhui;LOU Mengjia;LIU Shuang;QIANG Yijia;DENG Yuting;FU Na(College of Physics and Electronic Information Engineering,Zhejiang Normal University,Jinhua 321004,China;College of Economics and Management,Zhejiang Normal University,Jinhua 321004,China)

机构地区：[1]浙江师范大学物理与电子信息工程学院,浙江金华321004 [2]浙江师范大学经济与管理学院,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2019年第4期393-399,共7页Journal of Zhejiang Normal University:Natural Sciences

基　　金：浙江省科技厅创新团队项目(2010R5007)

摘　　要：针对图像的统计分析破译技术,提出了一种基于混沌序列、置换矩阵的能制造伪特征的图像加密算法.首先将原图像根据Logistic模型构造的混沌矩阵进行像素值异或,完成图像的像素值加密;然后标记待加密图并将其嵌入一个更大的带有伪特征的矩阵中;最后运用置换矩阵对图像进行像素值位置置乱得到密图.仿真结果及参数计算表明:该加密算法具有密钥空间大、载体图像小、运行速度快、抵抗各种攻击的性能好,以及制造伪特征的能力强等优点.According to the statistical analysis and decoding technology of the image,an image encryption algorithm based on chaotic sequence and permutation matrix that could create false features was proposed.Firstly,an XOR operation was done between the original image and a chaotic matrix constructed by the Logistic model to complete the pixel value encryption of the original image.Secondly,the encrypted image was marked and embedded in a larger matrix with pseudo features.Thirdly,a permutation matrix was used to scramble the pixel value position of the image to get the encrypted image.The advantages of large key space,small carrier image,fast running speed,strong resistance against various attacks and strong ability to produce false features were illustrated by the simulation results and parameter calculations.

关 键 词：信息安全 图像加密 混沌序列 统计分析攻击 伪特征 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]