A Fault-Injection Attack on Fiat-Shamir Cryptosystems

  • Authors:
  • Artemios G. Voyiatzis;Dimitrios N. Serpanos

  • Affiliations:
  • -;-

  • Venue:
  • ICDCSW '04 Proceedings of the 24th International Conference on Distributed Computing Systems Workshops - W7: EC (ICDCSW'04) - Volume 7
  • Year:
  • 2004

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Abstract

Fault-injection attacks and cryptanalysis is a realisticthreat for systems implementing cryptographic algorithms.We revisit the fault-injection attacks on the Fiat-Shamir authenticationscheme, a popular authentication scheme forservice providers like pay per view television, video distributionand cellular phones.We present a new and effective attack on cryptosystemsthat implement the Fiat-Shamir identi.cation scheme. Theattack is successful against all system con.gurations in contrastto the original Bellcore attack, which has been provenincomplete (easy to defend against).