Voting has been one of the most widely used cryptographic protocols. The use of ballot boxes allows us to ensure voter privacy and to ensure the accuracy of the voting process. However, this method inherently reveals the number of votes for each candidate during the tallying process. In this study, we present an advanced cryptographic protocol that employs the use of a physical balance scale to compare votes, while ensuring the confidentiality of the number of votes. The proposed protocol not only addresses this challenge but also allows the voting of multiple candidates. We discuss the efficiency of our proposed protocol in comparison to other voting protocols that use physical objects and show that our protocol is efficient despite achieving the secrecy of the number of votes.

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Secure Voting Protocol Using Balance Scale

  • Shohei Kaneko,
  • Pascal Lafourcade,
  • Lola-Baie Mallordy,
  • Daiki Miyahara,
  • Maxime Puys,
  • Kazuo Sakiyama

摘要

Voting has been one of the most widely used cryptographic protocols. The use of ballot boxes allows us to ensure voter privacy and to ensure the accuracy of the voting process. However, this method inherently reveals the number of votes for each candidate during the tallying process. In this study, we present an advanced cryptographic protocol that employs the use of a physical balance scale to compare votes, while ensuring the confidentiality of the number of votes. The proposed protocol not only addresses this challenge but also allows the voting of multiple candidates. We discuss the efficiency of our proposed protocol in comparison to other voting protocols that use physical objects and show that our protocol is efficient despite achieving the secrecy of the number of votes.