面向云服务的轻量级匿名订阅系统  

Lightweight anonymous subscription system for cloud services

作　　者：柳欣 张波[3] 张斌[1,2] 孙世文 Liu Xin;Zhang Bo;Zhang Bin;Sun Shiwen(School of Information Engineering,Shandong Youth University of Political Science,Jinan 250103,China;Key Laboratory of Information Security&Intelligent Control in Universities of Shandong,Shandong Youth University of Political Science,Jinan 250103,China;School of Information Science&Engineering,University of Jinan,Jinan 250022,China)

机构地区：[1]山东青年政治学院信息工程学院,济南250103a [2]山东青年政治学院山东省高校信息安全与智能控制重点实验室,济南250103 [3]济南大学信息科学与工程学院,济南250022

出　　处：《计算机应用研究》2022年第4期1228-1236,共9页Application Research of Computers

基　　金：山东省高等教育本科教改项目(M2018X245);山东省高等学校科学技术计划资助项目(J17KA081);山东青年政治学院科研培育项目(XJPY2021);山东青年政治学院教学改革研究项目(JG201905)。

摘　　要：针对已有匿名订阅系统订阅方式不灵活、用户端运算量大以及用户访问次数不受限制等缺陷,在Canard等人系统的基础上,提出一个面向云服务的轻量级匿名订阅系统。新系统的构造过程使用了关于掌握Au-Susilo-Mu签名的知识证明、改进的集合成员证明以及双线性对运算的性能优化技术。与已有系统相比,新系统同时满足以下性质:允许用户一次性订阅多种服务类型;对用户的访问次数作出限制;不允许用户与他人共享使用电子钱包;为用户提供了较强的隐私保护等级。该系统可证能安全地实现匿名订阅的功能。仿真实验表明,当被证明的秘密值在50~1050内变化时,用户在Access协议中的运行效率较同类系统提高了79.5%~83.2%。As many existing anonymous subscription systems suffer from defects(such as inflexible ordering,a large amount of client computation,and unlimited user access),this paper extended Canard et al.’s system so as to obtain a lightweight anonymous subscription system for cloud services.The construction of the new system adopted the zero-knowledge proof for proving possession of an Au-Susilo-Mu signature,improved set membership proof,and computational performance optimization techniques for bilinear operations.The new system had the following advantages over the existing schemes:allowing users to order multiple service types at one time,putting restrictions on the number of times users can access,precluding sharing of e-wallets,providing stronger privacy protection.The security analysis shows that the new system could safely realize the functionalities of anonymous subscription systems.The simulation results show that when the proved secret value varies from 50 to 1050,the operation efficiency of users in Access protocol increases by 79.5%to 83.2%compared with similar systems.

关 键 词：云服务 隐私保护 匿名订阅 知识证明 集合成员证明 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]