InforLorV4, Main, Merge, bibRecord, 005C37

Compositional Analysis of Contract Signing Protocols

Identifieur interne : 005C37 ( Main/Merge ); précédent : 005C36; suivant : 005C38

Compositional Analysis of Contract Signing Protocols

Auteurs : Michael Backes [Suisse] ; Anupam Datta [États-Unis] ; Ante Derek [États-Unis] ; John C. Mitchell [États-Unis] ; Mathieu Turuani [France]

Source :

RBID : Hal:inria-00103647

Abstract

We develop a general method for reasoning about contract-signing protocols using a specialized protocol logic. The method is applied to prove properties of the Asokan-Shoup-Waidner and the Garay-Jacobson-MacKenzie protocols. Our method offers certain advantages over previous analysis techniques. First, it is compositional: the security guarantees are proved by combining the independent proofs for the three subprotocols of which each protocol is comprised. Second, the formal proofs are carried out in a ``template'' form, which gives us a reusable proof that may be instantiated for the ASW and GJM protocols, as well as for other protocols with the same arrangement of messages. Third, the proofs follow the design intuition. In particular, in proving game-theoretic properties like \emph{fairness}, we demonstrate that the specific strategy that the protocol designer had in mind works, instead of showing that one exists. Finally, our results hold even when an unbounded number of sessions are executed in parallel.

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<front><div type="abstract" xml:lang="en">We develop a general method for reasoning about contract-signing protocols using a specialized protocol logic. The method is applied to prove properties of the Asokan-Shoup-Waidner and the Garay-Jacobson-MacKenzie protocols. Our method offers certain advantages over previous analysis techniques. First, it is compositional: the security guarantees are proved by combining the independent proofs for the three subprotocols of which each protocol is comprised. Second, the formal proofs are carried out in a ``template'' form, which gives us a reusable proof that may be instantiated for the ASW and GJM protocols, as well as for other protocols with the same arrangement of messages. Third, the proofs follow the design intuition. In particular, in proving game-theoretic properties like \emph{fairness}, we demonstrate that the specific strategy that the protocol designer had in mind works, instead of showing that one exists. Finally, our results hold even when an unbounded number of sessions are executed in parallel.</div>
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Compositional Analysis of Contract Signing Protocols

Compositional Analysis of Contract Signing Protocols

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