基于门限环签名的分级匿名表决方案  

Hierarchical Anonymous Voting Scheme Based on Threshold Ring Signature

作　　者：范家幸 王志伟[1,2,3] FAN Jia-xing;WANG Zhi-wei(School of Computer,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;Jiangsu Key Laboratory of Big Data Security and Intelligent Processing,Nanjing 210023,China;Jiangsu Key Laboratory of Computer Networking Technology,Nanjing 210096,China)

机构地区：[1]南京邮电大学计算机学院,南京210023 [2]江苏省大数据安全与智能处理重点实验室,南京210023 [3]江苏省计算机网络技术重点实验室,南京210096

出　　处：《计算机科学》2022年第1期321-327,共7页Computer Science

基　　金：国家自然科学基金(61672016)。

摘　　要：表决是现代民主社会常用的一种方式,涉及政治、股份企业、法院判决等多个领域。表决是一种特殊的投票,它只有"同意"和"否决"两个候选对象,一方票数过半即得结果。区块链作为一种自带对账功能的数字记账技术,具有时间戳、公开性、不可篡改等特性,满足表决的透明性和可验证性。为实现表决的匿名性,文中采用环签名来隐藏表决内容与表决者的对应关系。文中提出的分级匿名表决方案,实现了表决的合法性、保密性、不可重复性、可更新性和可验证性。通过为表决者产生虚拟身份形成层级机制,可用于各表决者持票数不等的场景;分级匿名表决协议将门限环签名方案运用到表决场景,使得表决过程中一旦一方票数过半即可签名得到最终的表决结果,计票过程简单、高效。Voting is a commonly used method in modern democratic society,involving many fields such as politics,stock companies,court decisions,etc.Voting is regarded as a specific form of balloting,with only two candidates in pro and con.Blockchain is a digital accounting technology with the characteristics of time stamp,openness and non-tamperability which satisfy the transparency and verifiability of voting.In order to realize the anonymity of voting,this paper uses ring signature to hide the correspondence between voting content and the voter.This paper puts forward a hierarchical anonymous voting scheme,which realizes the legitimacy,confidentiality,non-repeatability,updateability and verifiability of voting.By creating a hierarchy mechanism for the voting of virtual identities,it can be used in situations where the votes vary from vote to each voter,and this agreement applies the threshold ring signature scheme to the voting scene for the first time,making the voting process simple and efficient for the final voting results once one party has more than half of the votes cast.

关 键 词：匿名表决 区块链 分级 门限环签名 虚拟身份 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]