[Resource Topic] 2021/851: Multiple Candidates Coercion-Resistant Blockchain-Based E-Voting Protocol With Receipts

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

Authors: Riccardo Longo, 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.

ePrint: https://eprint.iacr.org/2021/851

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