基于混沌的反馈移位寄存器设计  

Design of feedback shift register based on chaos

作　　者：马超[1] 卢玉贞[1] 

机构地区：[1]大连海事大学数学系,辽宁大连116026

出　　处：《计算机应用》2008年第10期2704-2706,2720,共4页journal of Computer Applications

摘　　要：针对线性反馈移位寄存器产生的序列周期小,不适用于大数据量信息加密的缺点和单纯的混沌序列在有限精度下易出现小周期的问题,将二者结合,提出一种基于混沌的反馈移位寄存器设计方法,并对这一方法下产生的序列进行了大量的数据试验。分析结果证明,该法产生的二值序列密码具有优良的密码学特性,很适合用于数据加密。The key stream generated from Line Feedback Shift Register （LFSR） has short period and does not suit encrypting plentiful information. At the same time, chaotic sequences are prone to become short periodic ones because of the restriction of computational precision of computers. Aiming at remedying these inadequacies, a new design of the Feedback Shift Register （FSR） based on chaotic maps was put forward. Through simulation and analysis, the favorable performances of the binary sequences got from our method are evaluated.

关 键 词：混沌 反馈移位寄存器 随机性 敏感性 相关性 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]