A highly nonlinear cellular FSM-combiner for stream ciphers

  • Authors:
  • Franz Pichler

  • Affiliations:
  • Systems Theory, Johannes Kepler University Linz, Linz, Austria

  • Venue:
  • EUROCAST'07 Proceedings of the 11th international conference on Computer aided systems theory
  • Year:
  • 2007

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Abstract

Combiner construction is an important problem in the design of random generators for applications in stream ciphering. Most constructions use the concept of static combiners based on boolean functions. In this paper we propose the construction of a dynamic combiner which is based on a cellular array of finite state machines which realize a switching network for a XOR combiner with variable length.