Post-Processing Functions for a Biased Physical Random Number Generator

  • Authors:
  • Patrick Lacharme

  • Affiliations:
  • Imath, Université de Toulon,

  • Venue:
  • Fast Software Encryption
  • Year:
  • 2008

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Abstract

A corrector is used to reduce or eliminate statistical weakness of a physical random number generator. A description of linear corrector generalizing post-processing described by M. Dichtl at FSE'07 [5] is introduced. A general formula for non linear corrector, determining the bias and the minimal entropy of the output of a function is given. Finally, a concrete and efficient construction of post-processing function, using resilient functions and cyclic codes, is proposed.