Security analysis of a multiple pseudorandom-bit generator based on a spatiotemporal chaotic map |
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| Authors: | Wang Shi-Hong and Li Da |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | coupled map lattice cryptoanalysis pseudorandom-bit generator |
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