Cryptology ePrint Archive: Report 2021/851

Multiple Candidates Coercion-Resistant Blockchain-Based E-Voting Protocol With Receipts

Riccardo Longo and Chiara Spadafora

Abstract: This paper extends the two-candidate's protocol of Spadafora et al. to the multi-candidate case, making it applicable to elections where each voter expresses $P$ preferences among $M$ possible choices. The generalized protocol still achieves coercion and vote-selling resistance while being transparent, fully verifiable and receipt-based. The protocol relies on a generic blockchain with standard properties, and we prove the security of the construction under the standard Decisional Diffie Hellman assumption.

Category / Keywords: cryptographic protocols / e-voting, blockchain, DDH, election schemes, zero knowledge

Date: received 22 Jun 2021

Contact author: riccardolongomath at gmail com, c spadaf at libero it

Available format(s): PDF | BibTeX Citation

Version: 20210622:143701 (All versions of this report)

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