重庆邮电大学学报（自然科学版）2012，Vol.24Issue(4)：501-506,6.DOI:10.3979/j.issn.1673-825X.2012.04.021
基于分数阶超混沌系统的图像加密算法及安全性分析
Image encryption algorithm and cryptanalysis based on fractal-order hyperchaotic systems
摘要
Abstract
In this paper, the analysis on an improved integer-order hyperchaotic encryption algorithm shows it can not avoid chosen plaintext attack. A further improved fractional-order hyperchaotic encryption algorithm is proposed in this paper. Compared with previous integer-order chaotic systems, a more complex dynamic behavior of the system is indicated by the size of Lyapunov exponent. The relationship is kept in plaintext sequences in the initial values, and then the hyperchaotic systems are iterated to ensure the system encryption sequence associated with the plaintext. The theory analysis and experimental results show the method with the ideal statistics and differential characteristics can resist chosen plaintext attack effectively.关键词
分数阶/超混沌/图像加密/安全性分析Key words
fractional-order/ hyperchaotic/ image encryption/ cryptanalysis分类
信息技术与安全科学引用本文复制引用
朱伟,段文强,杨阳,沈建鑫..基于分数阶超混沌系统的图像加密算法及安全性分析[J].重庆邮电大学学报（自然科学版）,2012,24(4):501-506,6.基金项目
国家自然科学基金(61004042) （61004042）
