Features and usage of Belenios in 2022

Abstract

Belenios is an open-source Internet voting protocol associated to a free voting platform, launched in 2015. A detailed overview of the protocol has been presented in [6] in 2019 and its complete, up-todate specification is public [7]. Since 2019, the use of Belenios has significantly increased with more than 1,400 elections organized each year in 2020 and 2021, and a total of more than 100,000 received ballots. We report here on the new features added to Belenios since 2019 that include weighted votes, flexible counting methods (e.g. Condorcet or STV) thanks to mixnets, and crowdsourced translation with the support of more than 10 languages. Moreover, we have improved the auditability of Belenios in practice, both for voters and authorities.