A Self-Tallying Electronic Voting Based on Blockchain. (28th September 2021)

• Record Type: Journal Article
• Authors: Zeng, Gongxian; He, Meiqi; Yiu, Siu Ming; Huang, Zhengan
• Is Part Of: Computer journal. Volume 65:Number 12(2022)
• Page Start: 3020
• Page End: 3034
• Publication Date: 2021-09-28
• Subjects: e-voting -- blockchain -- self-tallying -- zero-knowledge proof -- universal verifiability; Computers -- Periodicals; 005.1
• DOI: 10.1093/comjnl/bxab123
• Languages: English
• ISSNs: 0010-4620

Abstract

Abstract: Electronic voting (e-voting) has been studied for many years. Recently, researchers find that blockchain can provide an alternative secure platform for e-voting systems, because of its properties of tamper resistance and transparency. However, existing blockchain-based schemes either require central authorities to tally ballots or can only handle a limited number of voters. This paper tries to propose a self-tallying e-voting system, i.e. the public can verify the validity of all ballots and tally the ballots without a centralized authority. To achieve this goal, we solve two challenges, namely how to cancel out all random numbers used for ballots and to prove the validity of ballots using a non-interactive zero knowledge proof. Our scheme is proved to be secure and shown to be practical by experiments.