Probabilistic versus deterministic algebraic cryptanalysis: a performance comparison

  • Authors:
  • Enes Pasalic

  • Affiliations:
  • University of Primorska, FAMNIT, Koper, Slovenia

  • Venue:
  • IEEE Transactions on Information Theory
  • Year:
  • 2009

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Abstract

In this work, the performance of probabilistic algebraic attacks is compared to classical (fast) algebraic attacks in the context of their application to certain linear beedback shift register (LFSR)-based stream ciphers. Using some results from coding theory it is shown that in terms of time complexity classical deterministic algebraic attacks are in general a more efficient cryptanalytic tool, unless the filtering function F: GF(2)n → GF(2)m has such a nonrandom structure that its cryptographic use is presumably refutable anyway.