摘要
提出一新的概念——pi序列,并利用非线性时间序列分析方法揭示pi序列的似混沌特性。然后提出一种基于pi序列的图像加密算法,对数字图像分别进行像素位置和像素值扰乱。最后图像加密算法的安全性分析结果表明此加密算法很强地抵抗统计攻击与差分攻击。
A new concept of pi series is proposed and its chaos-like characteristics have been found by the method of nonlinear time series.Then a new image encryption algorithm based on pi series is proposed to diffuse pixel positions and confuse pixel values.According to the security analysis,the image encryption algorithm demonstrates strong resistance towards exterior attacks such as statistical attacks and differential attacks.
出处
《计算机工程与应用》
CSCD
北大核心
2008年第12期98-100,共3页
Computer Engineering and Applications
基金
莙政中国大学生见习进修基金(CURE)
关键词
pi序列
似混沌特性
图像加密算法
安全性分析
pi series
chaos-like characteristics
image encryption algorithm
security analysis
