摘要
为了进一步讨论和完善混沌在数字图像加密领域应用已经取得的成果和存在的问题,简述了该领域的发展历程,总结了混沌作用于图像置乱的两大主流设计思想,对图像置乱的理论基础和主流方案进行了讨论,分析了传统置乱加密算法的弱点和不足。给出了常用的混沌置乱方法,介绍了混沌作用于加密系统的一般思路和应用混沌进行加密时应注意的几个问题,提出了灰度替换和像素置乱算法的评估标准等新见解,并讨论了该领域的发展方向。
To further discuss and improve some problems in the process of achieving some rapid development in the field of image encryption based on chaotic system. Firstly, the development of the problems in the field is presented briefly, then, the two major design mainstream of the image scrambling based on chaos are summed up, the method how to produce permutation matrix using chaotic map is discussed mainly about the basic theory and the popular scheme. Weakness of the traditional scrambling image encryption is analyzed. Finally, normal methods ofencryption algorithms based on chaos are provided, the evaluation criterion about substitution and permutation, and some new views are proposed. At the end, the direction of development of the area are discussed.
出处
《计算机工程与设计》
CSCD
北大核心
2011年第2期463-466,共4页
Computer Engineering and Design
基金
2009年度航空科学基金项目(2009ZD53045)
2010年陕西省科技计划基金项目(2010K06-22g)
西北工业大学2010年度基础研究基金项目(GAKY100101)
2010年度西北工业大学软件与微电子学院"R孵化基金"项目(2010R001)
关键词
密码学
图像加密
综述
混沌系统
加密算法
cryptography
image encryption
survey
chaotic system
encryptionalgorithms
