Reference : Bisimulations for Verifying Strategic Abilities with an Application to the ThreeBallo...
 Document type : Scientific journals : Article Discipline(s) : Engineering, computing & technology : Computer science Focus Areas : Security, Reliability and Trust To cite this reference: http://hdl.handle.net/10993/45850
 Title : Bisimulations for Verifying Strategic Abilities with an Application to the ThreeBallot Voting Protocol Language : English Author, co-author : Belardinelli, Francesco [> >] Condurache, Rodica [> >] Dima, Catalin [> >] Jamroga, Wojciech [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > APSIA >] Knapik, Michał [> >] Publication date : 2021 Journal title : Information and Computation Volume : 276 Pages : Article 104552 Peer reviewed : Yes (verified by ORBilu) Audience : International ISSN : 0890-5401 Keywords : [en] Alternating-time Temporal Logic ; Voting Protocols ; Formal Verification Abstract : [en] We propose a notion of alternating bisimulation for strategic abilities under imperfect information. The bisimulation preserves formulas of ATL$^*$ for both the {\em objective} and {\em subjective} variants of the state-based semantics with imperfect information, which are commonly used in the modeling and verification of multi-agent systems. Furthermore, we apply the theoretical result to the verification of coercion-resistance in the ThreeBallot voting system, a voting protocol that does not use cryptography. In particular, we show that natural simplifications of an initial model of the protocol are in fact bisimulations of the original model, and therefore satisfy the same ATL$^*$ properties, including coercion-resistance. These simplifications allow the model-checking tool MCMAS to terminate on models with a larger number of voters and candidates, compared with the initial model. Target : Researchers Permalink : http://hdl.handle.net/10993/45850 DOI : 10.1016/j.ic.2020.104552 Other URL : https://home.ipipan.waw.pl/w.jamroga/papers/bisimulation21i+c.pdf FnR project : FnR ; FNR10415467 > Peter Y. A. Ryan > VoteVerif > Verification Of Voter-verifiable Voting Protocols > 01/09/2016 > 31/08/2019 > 2015

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