Sound computational interpretation of symbolic hashes in the standard model

  • Authors:
  • Flavio D. Garcia;Peter van Rossum

  • Affiliations:
  • Institute for Computing and Information Sciences, Radboud University Nijmegen, The Netherlands;Institute for Computing and Information Sciences, Radboud University Nijmegen, The Netherlands

  • Venue:
  • IWSEC'06 Proceedings of the 1st international conference on Security
  • Year:
  • 2006

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Abstract

This paper provides one more step towards bridging the gap between the formal and computational approaches to the verification of cryptographic protocols. We extend the well-known Abadi-Rogaway logic with probabilistic hashes and we give a precise semantic interpretation to it using Canetti's oracle hashes. These are probabilistic polynomialtime hashes that hide all partial information. Finally, we show that this interpretation is computationally sound.