基于Z矩阵映射和选择加密的彩色图像退化算法研究  

Color image degradation algorithms based on Z-matrix map and selective encryption

作　　者：赵亮[1] 廖晓峰[1] 向涛[1] 肖迪[1] 

机构地区：[1]重庆大学计算机学院,重庆400044

出　　处：《物理学报》2010年第3期1507-1523,共17页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60703035);新世纪优秀人才支持计划(批准号:NCET-08-0603);中国博士后科学基金(批准号:20080430741);重庆市自然科学基金(批准号:2008BB2182;2008BB2193);重庆市自然科学重点基金(批准号:CSTC2009BA2024);重庆大学研究生科技创新基金(批准号:200903A1B0010303)资助的课题~~

摘　　要：首先提出了一种可应用于加密的三维Z矩阵映射,并从理论上证明了其良好的密码学特性,其次提出了两种基于不同选择加密模板的彩色图像退化算法并进行了仿真实验.最后,对所提出的两种退化算法从性能和安全性上进行了有效的分析,证明了算法的可靠性.With the development of information technology and network, multimedia protection has become a major concern, in which images are the important research objects . Especially, the image degradation is one of basic fields. This paper introduces a three-dimensional Z-matrix map which can be used for encryption, and shows its satisfactory property. Then, two color image degradation algorithms based on different templates for selective encryption are proposed. Finally, the performance and security of them are analyzed. Simulation results indicate the reliability of these schemes.

关 键 词：Z矩阵 选择加密 混沌加密 彩色图像退化 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]