Verifying Properties of Electronic Voting Protocols

In this paper we report on some recent work to formally specify and verify electronic voting protocols. In particular, we use the formalism of the applied pi calculus: the applied pi calculus is a formal language similar to the pi calculus but with useful extensions for modelling cryptographic protocols. We model several important properties, namely fairness, eligibility, privacy, receipt-freeness and coercion-resistance. Verification of these properties is illustrated on two cases studies and has been partially automated using the Blanchet’s ProVerif tool.