Paper 2025/1507 Original: eprint.iacr.org/2025/1507 ↗

A Novel Quantum Voting System Based on Quantum Blind Signature without Entanglement

Abstract

In this paper, we specifically review Xu et al.’s quantum blind signature scheme for distributed e-voting systems, which primarily focuses on simulating real-life e-voting. The scheme aims to ensure voter anonymity in an e-voting system. However, we found that it not only suffers from identity impersonation attacks but also lacks the blindness property essential to a blind quantum signature. To address these shortcomings, we propose a new quantum blind signature scheme that leverages quantum mechanical properties and a one-way hash function. Considering that a voting scheme naturally involves an election committee member blindly signing a ballot embedded with the name of the selected candidate, we use our quantum blind signature as the foundation to design a quantum voting system. This system effectively prevents the repudiation and counterfeiting issues present in Xu et al.’s scheme. Additionally, we provide relevant security analyses to support our theoretical framework. The results demonstrate that our scheme outperforms existing literature not only in terms of e-voting security properties—such as undeniability, anonymity, and untraceability—but also in conceptual simplicity and computational efficiency.