摘要： 混沌系统的结构参数敏感性、初值敏感性和以同一分布遍历各态的特性较好地对应密码系统的一些基本特性。分析结构参数和初始值变化对混沌序列敏感性影响，得到混沌序列敏感性效应是一个积累过程。将混沌序列按照敏感性划分为混沌敏感性前后期序列并给出界定原则。探究混沌序列敏感性在图像加密时的2种不同应用。

关键词: 结构参数, 初始值, 敏感性, 混沌序列, 图像加密

Abstract: The chaotic properties of chaotic system such as ergodicity, mixing and sensitive dependence on initial conditions and system parameters, are corresponding with some important properties of cryptosystems. This paper makes a deep analysis for its sensitivity caused by structure parameter and initial value, and gains that chaotic sensitivity effect is an accumulable course. It divides chaotic sequence into anterior sequence and latter sequence, and makes a criterion for them. This paper explores two different types of application to encrypt image using sensitivity of chaotic sequence.

Key words: structure parameter, initial value, sensitivity, chaotic sequence, image encryption

中图分类号: 

• TP391