基于Logistic映射的混沌流密码设计  

Design of Chaotic Stream Cipher Based on Logistic Mapping

作　　者：王化丰[1] 张桂香[2] 邵勇[3] 

机构地区：[1]大连理工大学电信学院,大连116023 [2]齐齐哈尔大学计算中心,齐齐哈尔161005 [3]北京工业大学软件工程学院,北京100022

出　　处：《计算机工程》2007年第10期164-165,168,共3页Computer Engineering

摘　　要：混沌系统特有的一些优良属性较适合流密码的设计,比如混沌迭代序列对初始条件和控制参数的敏感性、伪随机性、混和性和确定性等。该文以Logistic映射为例说明了其主要特性和初值敏感性,并重点图示了在字节输出方式下和比特输出方式下,其离散分布和均匀分布的差异和改善。Some particular attributes of chaos system are more suitable for stream cipher design, such as the sensitivity to initial conditions and control parameters, pseudo randomness, mixing and exactness, etc. Taking Logistic mapping as example, this paper shows out its primary characteristics, illustrates the difference and improvement of the discrete distribution and uniform distribution under conditions of the standard byte output method and the improved bit output method.

关 键 词：流密码 伪随机性 混沌 LOGISTIC 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]