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

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【Author】 Wang Shi-Hong~(a)b)+) and Li Da~(a)) 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

【机构】 School of Science,Beijing University of Posts and Telecommunications； Key Laboratory of Optical Communication and Lightwave,Beijing University of Posts and Telecommunications；

【摘要】 <正>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.更多还原

【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.更多还原

【关键词】 coupled map lattice； cryptoanalysis； pseudorandom-bit generator；
【Key words】 coupled map lattice； cryptoanalysis； pseudorandom-bit generator；

【基金】 Project supported by the National Natural Science Foundation of China(Grant No.60973109)

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2010年08期

【分类号】O415.5
【被引频次】2
【下载频次】31

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