一种混沌序列密码的产生  

Generation of Chaotic Cipher Sequences

作　　者：李广明[1] 张洪[2] 肖慧娟[1] 

机构地区：[1]东莞理工学院,广东东莞523808 [2]中央民族大学,北京100081

出　　处：《通信技术》2009年第5期227-229,共3页Communications Technology

基　　金：国家自然科学基金资助项目(No.60773050);东莞市科技计划项目(No.2007108101008)。

摘　　要：受到时延混沌系统对时延时间段初值函数极端敏感特点的启发,利用一一映射与混沌映射相组合在数字滤波器的结构上产生混沌密码序列,使序列同样受到时延时间段初值的影响,增加序列的复杂度,提高保密通信的安全性,并给出了理论分析。同时对该序列的相关性等特性进行了模拟,将其与混沌跳频、非一一映射所产生的混沌序列进行比较,证明了该方法是可行性。Enlightened by the sensitivity of time delay chaotic to the time lag function, this paper proposes a method for generating chaotic sequences through the combination of chaotic map with one-to-one map, thus to augment the linear complication of chaotic sequences and boost up the secrecy and security of system. This paper analyzes the correlation of this sequence through numerical value simulation. The simulation result has proved the theoretical analysis while the comparisons with frequency-hopping sequences and none one-to-one sequence have indicated the feasibility of this proposed method.

关 键 词：混沌 数字滤波器 相关性 

分 类 号：TN918.1[电子电信—通信与信息系统]