SM2可链接环签名在匿名电子投票系统中的应用  

The Application of SM2 Linkable Ring Signature in Anonymous E-voting System

作　　者：李启南[1] 邹楷文 LI Qinan;ZOU Kaiwen(School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学电子与信息工程学院,甘肃兰州730070

出　　处：《河南科技》2024年第20期20-25,共6页Henan Science and Technology

基　　金：甘肃省自然科学基金项目“基于SM2可链接环签名的共识算法抗自适应攻击研究”(22JR5RA356)。

摘　　要：【目的】针对匿名电子投票中签名算法非国产化、身份隐私泄露、重复投票、投票结果提前泄露的安全性问题,提出了基于SM2可链接环签名的匿名电子投票系统。【方法】以SM2可链接环签名作为选票中的身份凭证,保证投票者身份匿名,同时规避了选票被伪造的可能,实现投票者身份和选票的全过程匿名性;使用匿名地址来隐藏选票内容,避免投票结果提前泄露,实现投票的公正性和候选人身份匿名;利用SM2可链接环签名的可链接性来防止重复投票,实现投票的不可重复性;应用FISCO BCOS智能合约来完成计票过程,避免传统可信第三方的约束,实现投票的公平性。【结果】该设计满足电子投票的七大基本属性,实现了匿名电子投票系统的全流程国密替代,丰富了SM2可链接环签名的应用场景。【结论】SM2可链接环签名能替代国际通用环签名,实现应用系统环签名国产化。[Purposes]To address the security issues related to non-localization of signature algorithms,identity privacy disclosure,repeated voting,and early disclosure of voting results in anonymous e-voting,an anonymous e-voting scheme based on SM2 linkable ring signatures is proposed.[Methods]The sys-tem employs SM2 linkable ring signature as the identity certificate in the ballot to ensure the anonymity of the voter's identity and prevent ballot forgery,thereby enhancing the understanding of voter anonymity and the entire voting process.It also employs anonymous addresses to conceal ballot contents,preventing premature disclosure of voting results and ensuring fairness in the vote as well as candidate anonymity.In addition,it utilizes the linkability of SM2 linkable ring signature to prevent duplicate voting and achieve non-repeatability of votes.Furthermore,it leverages FISCO BCOS smart contracts for vote count-ing,ensuring fairness without relying on traditional trusted third parties.[Findings]The scheme meets the seven fundamental attributes of e-voting,achieves the complete process of replacing national secrets in an anonymous e-voting system,enhances the application scenario of SM2 linkable ring signature.[Con-clusions]The SM2 linkable ring signature has the potential to replace the international common ring sig-nature and enable independent localization of application system ring signatures.

关 键 词：SM2可链接环签名 国密算法 隐私保护 匿名电子投票 匿名地址 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]