基于混沌数列变换的图像加密算法  

Image encryption algorithm based on chaotic sequence transform

作　　者：任洪娥[1] 戴琳琳[1] 张健[1] 

机构地区：[1]东北林业大学信息与计算机工程学院,黑龙江哈尔滨150040

出　　处：《计算机工程与设计》2013年第5期1615-1619,共5页Computer Engineering and Design

基　　金：国家林业公益性行业科研专项基金项目(201204715)

摘　　要：针对现有的数字图像加密算法存在算法复杂、运算成本大以及安全性不高等问题,提出了一种基于混沌数列变换的数字图像加密算法。该算法通过对Logistic和Hybrid两种不同的混沌序列进行变换,从像素灰度值以及像素位置两方面对图像进行加密。实验结果表明,该算法加密效果良好并且能够抵御统计分析以及攻击操作,密钥量大安全性高,符合现代技术对图像加密的要求。According to the existing problems like the algorithm is very complex, the quantity of operation is large and safety is not advanced in the present digital image encryption, a digital image encryption algorithm based on the chaotic sequence trans- form is proposed. The algorithm encrypt the image from two aspects that the pixel grayscale value and pixel position through two different chaotic sequence transform of the Logistic and Hybrid. The experiments show that the algorithm has good encryption effect and can withstand statistical analysis and attack operation, the amount of the key is large with high safety, in line with the requirements of modern technology to image encryption.

关 键 词：混沌系统 LOGISTIC映射 Hybrid映射 数列变换 图像加密 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]