Title
Verifying anonymity in voting systems using CSP.
Abstract
We present formal definitions of anonymity properties for voting protocols using the process algebra CSP. We analyse a number of anonymity definitions, and give formal definitions for strong and weak anonymity, highlighting the difference between these definitions. We show that the strong anonymity definition is too strong for practical purposes; the weak anonymity definition, however, turns out to be ideal for analysing voting systems. Two case studies are presented to demonstrate the usefulness of the formal definitions: a conventional voting system, and Prêt à Voter, a paper-based, voter-verifiable scheme. In each case, we give a CSP model of the system, and analyse it against our anonymity definitions by specification checks using the Failures-Divergences Refinement (FDR2) model checker. We give a detailed discussion on the results from the analysis, emphasizing the assumptions that we made in our model as well as the challenges in modelling electronic voting systems using CSP.
Year
DOI
Venue
2014
10.1007/s00165-012-0268-x
Formal Asp. Comput.
Keywords
Field
DocType
Anonymity, Voting systems, CSP, Formal verification, Prêt à Voter, Conventional voting system, FDR2
Electronic voting,Model checking,Voting,Computer science,Theoretical computer science,Anonymity,Process calculus,Formal verification
Journal
Volume
Issue
ISSN
26
1
1433-299X
Citations 
PageRank 
References 
7
0.48
30
Authors
3
Name
Order
Citations
PageRank
Murat Moran192.20
James Heather229722.19
Steve Schneider31425116.55