摘要
由于混沌系统对初始条件和混沌参数非常敏感以及生成的混沌序列具有非周期和伪随机性的特征,近年来混沌系统在密码学研究领域得到了较多的研究。提出一种基于混沌的序列密码生成方法,该方法通过引入扰动序列使得输出的混沌序列具有良好的均匀分布和随机统计特性,同时为了克服扰动序列数量的有限性,设计了一个素数表用来不定时更新扰动序列的输入。理论研究和模拟结果表明,该混沌序列具有较好的保密性而且便于软件实现。
Chaotic systems are sensitive to initial conditions and chaotic paramenters,and chaotic sequences are non-periodic and pseudo-random.These properties of chaotic systems are suitable for sequence encryption.A sequence encryption method based on chaos is proposed.Meanwhile,a Legendre sequences is uesd as the parameter sequence and the perturbation sequence.In order to avoid a limitation of the number of Legendre sequences,a prime number table is applied.The computer simulation results show that the chaotic sequence has good cryptography properties.Therefor,this method is fairly good in security and can be implemented easily in software.
出处
《计算机工程与应用》
CSCD
北大核心
2009年第32期98-100,共3页
Computer Engineering and Applications
基金
国家自然科学基金No.60773120~~
