A Proof of Non-repudiation

  • Authors:
  • Giampaolo Bella;Lawrence C. Paulson

  • Affiliations:
  • -;-

  • Venue:
  • Revised Papers from the 9th International Workshop on Security Protocols
  • Year:
  • 2001

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Abstract

The Inductive Approach for protocol verification, extended with a formalisation of message reception and agents' knowledge, is adopted here for reasoning about non-repudiation protocols. The fair non-repudiation protocol due to Zhou and Gollmann is modelled inductively in Isabelle/HOL. The verification focuses on the validity of evidence goal: that the evidence held by each peer at the end of a session suffices to refute the other's denial of participation. The proof strategies appear to be general thus far, but the fairness goal is yet to be studied.