International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 02 May 2016

David Bernhard, Oksana Kulyk, Melanie Volkamer
ePrint Report ePrint Report
The Helios voting scheme is well studied including formal proofs for veri ability and ballot privacy, but it does not provide participation privacy (i.e. it reveals who participated in the election). Kulyk, Teague and Volkamer proposed an extension to Helios that is claimed to provide ballot privacy as well as participation privacy while providing stronger veri ability than Helios. However, the authors did not prove their claims. Our contribution is to provide a formal de nition for participation privacy and to prove that their claims hold.
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