Proving More Observational Equivalences with ProVerif

Cheval, Vincent and Blanchet, Bruno (2013) Proving More Observational Equivalences with ProVerif. In: Basin, David and Mitchell, John C., eds. Second International Conference, POST 2013, Held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2013, Rome, Italy, March 16-24, 2013. Proceedings. Lecture Notes in Computer Science, 7796. Springer-Verlag Berlin, Roma, Italy pp. 226-246. ISBN 978-3-642-36829-5. E-ISBN 978-3-642-36830-1. (doi:https://doi.org/10.1007/978-3-642-36830-1_12) (Full text available)

Abstract

This paper presents an extension of the automatic protocol verifier ProVerif in order to prove more observational equivalences. ProVerif can prove observational equivalence between processes that have the same structure but differ by the messages they contain. In order to extend the class of equivalences that ProVerif handles, we extend the language of terms by defining more functions (destructors) by rewrite rules. In particular, we allow rewrite rules with inequalities as side-conditions, so that we can express tests ''if then else'' inside terms. Finally, we provide an automatic procedure that translates a process into an equivalent process that performs as many actions as possible in- side terms, to allow ProVerif to prove the desired equivalence. These extensions have been implemented in ProVerif and allow us to au- tomatically prove anonymity in the private authentication protocol by Abadi and Fournet.

Item Type:	Conference or workshop item (Paper)
Uncontrolled keywords:	Cryptographic protocols, Formal verification, Symbolic model, Automatic, Equivalence properties, Horn clauses
Subjects:	Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming, Q Science > QA Mathematics (inc Computing science) > QA 9 Formal systems, logics
Divisions:	Faculties > Sciences > School of Computing > Security Group
Depositing User:	Vincent Cheval
Date Deposited:	16 Jan 2015 14:36 UTC
Last Modified:	17 Jan 2017 19:58 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/46727 (The current URI for this page, for reference purposes)