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Generator of chaotic sequences and corresponding generating system

  • US 8,781,116 B2
  • Filed: 03/28/2011
  • Issued: 07/15/2014
  • Est. Priority Date: 03/29/2010
  • Status: Active Grant
First Claim
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1. A generator of chaotic sequences eu(n), n being a strictly positive integer, of integer values represented on a determined number of quantification bits N, to form data encrypting keys, the generator comprising:

  • at least two discrete recursive filters at least of first-order generating an output chaotic sequence of integer values, each recursive filter comprising means for implementing a nonlinear function F, connected via an exclusive-or gate to means for generating a perturbation sequence Q(n) of integer values represented on a determined number of quantification bits k,wherein the two filters are mounted in parallel, the chaotic sequence eu(n) output from the generator being equal to an exclusive-or of the chaotic sequences output from the recursive filters, andwherein the means for implementing the nonlinear function includes a chaotic map.

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