基于群盲签名的多授权电子投票系统

摘要

In single authority E-voting system,it is easy to control the voting result and difficult to assure the privacy.In this pa-per,a double-blind multi-authority E-voting system based Ghadafi’s group blind signature and SP-signature is proposed.The multi-authority is introduced to avoid the control problem of a single authority.The SP-signature is applied to ensure the voter cannot vote with another’s identity.Finally,many features of new E-voting system are analyzed including security,eligibility, privacy,universal verifiability,uncoercibility,unreusability and fairness.%针对单个授权电子投票系统授权者容易控制选票结果，以及无法保证授权者隐私的问题，基于 Ghadafi 群盲签名和 SP （structure-preserving）盲签名，构建了一个双盲的多授权电子投票系统。引入多个授权者，解决了授权者容易控制选票结果的问题。通过 SP 盲签名协议，新系统中投票者无法投其他用户的选票。最后，分析了新电子投票系统的安全性、可认证性、保密性、全局验证性、不可强制性、不可重投性和公平性。