基于区块链和知识证明的匿名数据共享算法  

Blockchain and zero-knowledge proofs-based anonymous data-sharing algorithm

作　　者：顾伟[1] 任勇军[1] GU Wei;REN Yong-jun(School of Computer and Software,Nanjing University of Information Science and Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学计算机与软件学院,南京210044

出　　处：《信息技术》2022年第2期14-19,共6页Information Technology

基　　金：国家自然科学基金面上项目(62072249)。

摘　　要：由于车载网(Vehicular Ad-Hoc Networks,VANETs)中车辆的存储容量有限,就需要增加边缘计算的数据存储空间。然而,边缘服务器并不是完全信任的,这就存在车与车间所共享数据的安全和隐私泄露问题。为此,提出基于区块链和知识证明的匿名数据共享(Blockchain and Zero-Knowledge Proofs-based Anonymous Data-sharing,BZAD)算法。通过区块链和知识证明,构建一个分布式、匿名数据共享策略。同时,引用发布-订阅模式的存储数据,提高对数据的管理效率。性能分析表明,BZAD算法在维持高安全性的同时,具有较高的运行效率。Due to resources limitation of vehicles in Vehicular Ad-Hoc Networks,the increasing data storage space of edge computing is needed.However,these edge servers are not fully trusted,which rises new serious security and privacy challenges regarding the shared data between vehicles.Therefore,Blockchain and Zero-Knowledge Proofs-based Anonymous Data-sharing(BZAD)Algorithm is proposed in this paper.The blockchain and Zero-Knowledge Proofs are used to construct a decentralized and anonymous data-sharing scheme.In addition,a data storage scheme based on publish-subscribe model is used to enhance the data management.The numerical results shows that our protocol achieves a reasonable efficiency while guaranteeing a high level of security.

关 键 词：车载网 数据共享 边缘计算 安全和隐私 区块链 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]