一种动态随机数发生器  

A Dynamic Random Number Generator

作　　者：李幼名[1] 唐明[1] 张焕国[1] 

机构地区：[1]武汉大学计算机学院,湖北武汉430072

出　　处：《武汉大学学报（理学版）》2008年第5期513-516,共4页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金资助项目(60673071)

摘　　要：构造了一种动态随机数发生器,将混沌和分组密码结合起来,先利用混沌的混迭特性产生伪随机比特流,然后利用分组密码杂化伪随机比特流,从而提高比特流的伪随机性;为了引入更多的熵,对分组密码的S盒的输入做系数可变的仿射变换.实验结果表明,此随机数发生器可以通过NIST随机套件测试.This text puts forward a dynamic random number generator. It unites chaos and grouping cipher together. First, a bit sequence is produced by chaos system with its mask characteristic. Then, the sequence is hybridized by a network composed of grouping ciphers, and so its pseudorandom characteristic is strengthened. At the same time, to add more entropy of information to the sequence, a dynamic affine function is applied to the input of the S-box which is a part of the grouping ciphers. Experiment shows that the random number generator can get through the random number test suit from NIST.

关 键 词：动态随机数发生器 混沌 分组密码 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]