key: 2011-attacking-ballot-secrecy-in-electronic-voting
type: techreport
title: A note on replay attacks that violate privacy in electronic voting schemes
authors:
  - Ben Smyth
  - Véronique Cortier
year: 2011
month: 6
number: RR-7643
institution: INRIA
description: >-
  This paper demonstrates replay attacks that violate privacy in the e-voting protocols by Sako
  & Kilian and Schoenmakers.
keywords: >-
  ballot independence, ballot secrecy, privacy, replay attack, vulnerability, exploit, Helios,
  electronic voting, RR-7643, inria-00599182
abstract: >-
  In our previous work, we have shown that the Helios 2.0 electronic voting protocol does not
  satisfy ballot independence and exploit this weakness to violate privacy; in particular, the
  Helios scheme is shown to be vulnerable to a replay attack. In this note we examine two further
  electronic voting protocols - namely, the schemes by Sako & Kilian and Schoenmakers - that are
  known not to satisfy ballot independence and demonstrate replay attacks that violate privacy.
links:
  - file: Smyth11-attacking-electronic-voting.pdf
    text: Technical Report
    alt:
      url: http://hal.inria.fr/inria-00599182
      text: INRIA Archive version