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基于Logistic映射与排序变换的图像加密算法
引用本文:陆大兴,廖晓峰,韩洁,李明.基于Logistic映射与排序变换的图像加密算法[J].微机发展,2007,17(12):27-30.
作者姓名:陆大兴  廖晓峰  韩洁  李明
作者单位:重庆大学计算机学院 重庆400045
摘    要:提出了一种新的基于混沌映射与排序变换的图像加密算法。混沌序列具有容易生成、对初始条件敏感以及具备白噪声的统计特性等优点。该算法利用混沌映射对初值的敏感性和伪随机性,通过对生成的混沌序列排序来得到图像置乱的地址变换码,由于排序的不规则性,因此新的混沌图像置乱算法具有较强的保密性能。通过对该算法的置乱性能分析并进行仿真实验,结果表明,新算法具有良好的图像加密性能。

关 键 词:混沌映射  排序变换  置乱
文章编号:1673-629X(2007)12-0027-04
修稿时间:2007年3月10日

Picture Scrambling Algorithm Based on Logistic Mapping and Sort Transformation
LU Da-xing,LIAO Xiao-feng,HAN Jie,LI Ming.Picture Scrambling Algorithm Based on Logistic Mapping and Sort Transformation[J].Microcomputer Development,2007,17(12):27-30.
Authors:LU Da-xing  LIAO Xiao-feng  HAN Jie  LI Ming
Abstract:Proposed a new algorithm of images scrambling based on the chaotic mapping and sort transformation.Chaotic sequences have several good properties including the ease of their generation,their sensitive dependence on initial condition and noise like.The new algorithm utilizes the sensitivity of the original state and the uniqueness of the chaos mapping,obtains the address codes of the images transposition by the sort transformation of the chaotic sequence.Due to the strong irregularity of sort transformation,the new chaotic images scrambling algorithm possesses high level security.Also analyzes the scrambling performance of the new algorithm in a statistical way.The results of the analysis indicate that the algorithm bears nice scrambling capability.
Keywords:chaos mapping  sort transformation  transposition
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