An efficient parallel pseudorandom bit generator based on an asymmetric coupled chaotic map lattice

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• 作者：RENFU LIANG ; XUE TAN ; HU ZHOU ; SHIHONG WANG
• 关键词：Coupled map lattice ; spatiotemporal chaos ; pseudorandom bit generator ; parallel performance. ; 05.45.Ra ; 05.45.Gg
• 刊名：Pramana
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：85
• 期：4
• 页码：617-627
• 全文大小：358 KB
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• 作者单位：RENFU LIANG (1)
  XUE TAN (1)
  HU ZHOU (1)
  SHIHONG WANG (1)
  
  1. School of Sciences, Beijing University of Posts and Telecommunications, Beijing, 100876, China
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Physics
  Astronomy
  Astrophysics
  
• 出版者：Springer India
• ISSN：0973-7111

文摘

In this paper, an asymmetric coupled map lattice (CML) combining sawtooth map as a local map is presented and its chaotic behaviours are analysed. Based on this asymmetric CML, a pseudorandom bit generator (PRBG) is proposed. The specific parameters of the system that make complicated floating-point computation and multiplication computation transform into simple shift bit operations are adopted. That not only ensures the nonlinear operations, but also increases the performance efficiency. The PRBG is implemented in software and hardware. The parallel output bit sequences pass all of the NIST SP800-22 statistical tests. Keywords Coupled map lattice spatiotemporal chaos pseudorandom bit generator parallel performance.