• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

计算机工程与科学

• 论文 • 上一篇    下一篇

自变量斥耦合混沌伪随机比特发生器

伍琦   

  1. (江西财经大学信息管理学院,江西 南昌 330032)
  • 收稿日期:2016-07-15 修回日期:2016-09-10 出版日期:2016-11-25 发布日期:2016-11-25
  • 基金资助:

    国家自然科学基金(61462033)

An independent variable exclusively
coupled chaotic pseudorandom bit generator

WU Qi   

  1. (School of Information Technology,Jiangxi University of Finance & Economics,Nanchang 330032,China)
  • Received:2016-07-15 Revised:2016-09-10 Online:2016-11-25 Published:2016-11-25

摘要:

设计了一种新的耦合方法——自变量斥耦合,并将其作用于斜帐篷映射来得到一个新的混沌系统。实验显示,这一系统的混沌性质相当优秀。随后,基于该系统构建了一个伪随机比特发生器。接着,用五项统计测试来检测该发生器所生成比特流的伪随机性。最后,计算了所生成比特流的线性复杂度及该发生器的密钥空间大小。所有实验均表明该发生器性质良好,较适合用于信息安全领域。
 

关键词: 混沌系统, 耦合, 伪随机比特发生器

Abstract:

We design a new way of coupling, namely, an independent variable exclusive coupling, which is applied to skew tent mapping to obtain a new chaotic system. Experiments demonstrate that the system possesses excellent chaotic properties. A pseudorandom bit generator is then constructed based on it, and we employ five statistic tests to evaluate the pseudorandomness of the bit streams generated by the proposed generator. We finally compute the linear complexity of the generated bit streams and the cipher space of the generator. All the experiments illustrate that the generator holds satisfactory properties and is suitable for applications in information security.

Key words: