Secure blockchain-based electronic voting mechanism

Pin-Chang Su, Tai-Chang Su
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Abstract

Many countries have strived to popularise electronic voting (e-voting), but owing to various security concerns, large-scale elections are still invariably held using paper ballots. Electronic voting systems must find solutions to various issues with authentication, data privacy and integrity, transparency, and verifiability. On the other hand, Blockchain technology offers an innovative solution to many of these problems. In this study, we constructed a private blockchain network with a large number of nodes, which is only accessible to the relevant voters. Because of its decentralised design, the system is robust against attacks by malicious actors. The security of the system was enhanced using an elliptic curve discrete logarithm problem-based blind multi-document signcryption mechanism. As this mechanism can be used to blindly sign and encrypt multiple voting documents in a single pass, it will minimise redundant signing processes and thus improve efficiency. Furthermore, a self-certification mechanism was used in lieu of centralised certificate servers, so that the voters can participate in the computation of public and private keys. In summary, we designed an electronic voting mechanism that is sufficiently secure for practical purposes, which will improve trust in e-voting, and reduce the costs associated with vote checking.
基于区块链的安全电子投票机制
许多国家都在努力推广电子投票(e-voting),但由于各种安全问题,大规模选举仍然无一例外地使用纸质选票。电子投票系统必须找到各种问题的解决方案,包括身份验证、数据隐私和完整性、透明度和可验证性。另一方面,区块链技术为许多这些问题提供了创新的解决方案。在本研究中,我们构建了一个拥有大量节点的私有区块链网络,该网络仅供相关选民访问。由于其分散的设计,该系统对恶意行为者的攻击具有很强的鲁棒性。采用基于椭圆曲线离散对数问题的盲多文件签名加密机制,提高了系统的安全性。由于该机制可以在一次通过中对多个投票文件进行盲目签名和加密,因此可以最大限度地减少冗余签名过程,从而提高效率。此外,采用自我认证机制代替集中式证书服务器,使投票人能够参与公钥和私钥的计算。总之,我们设计了一个足够安全的电子投票机制,用于实际目的,这将提高对电子投票的信任,并降低与投票检查相关的成本。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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