Pseudorandom generators based on subcovers for finite groups

  • Authors:
  • Chenggen Song;Maozhi Xu;Chunming Tang

  • Affiliations:
  • Laboratory of Mathematics and Applied Mathematics, School of Mathematical Sciences, Peking University, Beijing, P.R. China;Laboratory of Mathematics and Applied Mathematics, School of Mathematical Sciences, Peking University, Beijing, P.R. China;Laboratory of Mathematics and Applied Mathematics, School of Mathematical Sciences, Peking University, Beijing, P.R. China

  • Venue:
  • Inscrypt'11 Proceedings of the 7th international conference on Information Security and Cryptology
  • Year:
  • 2011

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Abstract

In this article, we describe a new approach for constructing pseudorandom generator using subcovers for large finite groups. The Gennaro generator (J Cryptol 15:91-110, 2005) and Farashahi et al. generator (PKC LNCS 4450: 426-441, 2007) can be specific instances of the new approach. We focus, in particular, on the class of symmetric group Sn and construct the first pseudorandom generator based on non-abelian group whose security can be proven. We successfully carry out a test of the generator based on non-abelian group by using the NIST Statistical Test Suite.