Paper Accepted at SACMAT 2026

2026 - SACMAT - Coercion-Resistant Voting via Anamorphic Encryption
2026 - SACMAT - Coercion-Resistant Voting via Anamorphic Encryption

Title: Coercion-Resistant Voting via Anamorphic Encryption
Authors: Antonis Michalas
Venue: 31st ACM Symposium on Access Control Models and Technologies (SACMAT).


Abstract: The paper addresses the challenging and timely issue of vote buying in electronic voting. Electronic voting is a well established process in modern democracies. However, problems such as vote buying continue to pose a significant challenge. This paper aims at addressing this issue by leveraging the novel concept of Anamorphic Encryption to enable voters to cast their original vote together with a hidden “fake” one. In this way voters can pursue their true preferences unobstructed while providing a compliance proof to potential vote buyers. The security of our construction is proved through a formal security analysis, that considers powerful adversaries who aim at breaching user privacy and influencing votes. We believe that this innovation e-voting approach can enhance the overall security of e-voting systems and pave the way to avoid electoral manipulation.

Antonios Michalas

  • Professor
  • cyber security
  • Faculty of Information Technology and Communication Sciences
  • Tampere University
  • +358504478399
  • antonios.michalas@tuni.fi
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