中国物理B ›› 2010, Vol. 19 ›› Issue (8): 80505-080505.doi: 10.1088/1674-1056/19/8/080505

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Security analysis of a multiple pseudorandom-bit generator based on a spatiotemporal chaotic map

李达1, 王世红2   

  1. (1)School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China; (2)School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China; Key Laboratory of Optical Communication and Lightwave, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2009-12-09 修回日期:2010-04-07 出版日期:2010-08-15 发布日期:2010-08-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 60973109).

Security analysis of a multiple pseudorandom-bit generator based on a spatiotemporal chaotic map

Wang Shi-Hong(王世红)a)b)† and Li Da(李达)a)   

  1. a School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China; b Key Laboratory of Optical Communication and Lightwave, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2009-12-09 Revised:2010-04-07 Online:2010-08-15 Published:2010-08-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 60973109).

摘要: In this paper we analyse the security of a multiple pseudorandom-bit generator based on the coupled map lattice and suggest an improved model. Utilizing the error function attack, the multiple pseudorandom-bit generators which can be realized by the three digitization methods are analysed and the effective key spaces are estimated. We suggest an improved multiple pseudorandom-bit generator with 128-bit secret key, and analyse the key sensitivity and statistical properties of the system.

Abstract: In this paper we analyse the security of a multiple pseudorandom-bit generator based on the coupled map lattice and suggest an improved model. Utilizing the error function attack, the multiple pseudorandom-bit generators which can be realized by the three digitization methods are analysed and the effective key spaces are estimated. We suggest an improved multiple pseudorandom-bit generator with 128-bit secret key, and analyse the key sensitivity and statistical properties of the system.

Key words: coupled map lattice, cryptoanalysis, pseudorandom-bit generator

中图分类号:  (Telecommunications: signal transmission and processing; communication satellites)

  • 84.40.Ua
84.30.Ng (Oscillators, pulse generators, and function generators)