基于区块链的V2G匿名身份认证方案

doi:10.19678/j.issn.1000-3428.0061180

摘要/Abstract

摘要： 车辆到电网（V2G）能源交易系统中的通信实体由于缺乏身份验证和匿名保护，导致电动汽车（EV）与充电站、数据中心等V2G通信实体之间存在安全与隐私风险。建立基于区块链的能源交易系统模型，使用区块链的分布式账本执行能源交易，利用椭圆曲线数字签名算法和单向哈希函数进行身份验证。设计匿名的身份认证方案，实现EV、充电站和数据中心之间的隐私保护和相互认证，同时最小化EV的通信开销和计算开销。性能分析结果表明，该方案可有效抵御假冒、重放、窃听等攻击，并且相比现有方案在身份认证过程中EV约平均降低了25%的通信成本和33%的计算时间。

关键词: 车辆到电网技术, 区块链, 椭圆曲线数字签名算法, 身份认证, 通信开销, 计算开销

Abstract: The existing Vehicle-to-Grid(V2G) energy transaction systems generally lack identity verification and anonymity protection for communicating entities,resulting in security and privacy risks between Electric Vehicle(EV) and V2G communication entities such as Charging Station(CS) and Data Center(DC).To address the problem,a blockchain-based energy transaction system model is established.The system uses the distributed ledger of blockchain to execute energy transactions,and employs the Elliptic Curve Digital Signature Algorithm(ECDSA) and the one-way Hash function for identity verification.On this basis,an anonymous identity authentication scheme is designed to realize privacy protection and mutual authentication between EVs,CSs and DCs,while minimizing communication and computation overheads of EVs.The performance analysis results show that the scheme can resist counterfeiting,replay,eavesdropping and other attacks.Additionally,compared with the existing schemes,the proposed scheme reduces the communication overhead of EVs by about 25% and computation time by about 33% on average in the identity authentication process.

Key words: Vehicle-to-Grid(V2G) technology, blockchain, Elliptic Curve Digital Signature Algorithm(ECDSA), identity authentication, communication overhead, computation overhead

中图分类号:

TP393

刘期烈, 陈澄. 基于区块链的V2G匿名身份认证方案[J]. 计算机工程, 2021, 47(11): 22-28.

LIU Qilie, CHEN Cheng. Anonymous Identity Authentication Scheme in V2G Based on Blockchain[J]. Computer Engineering, 2021, 47(11): 22-28.

https://www.ecice06.com/CN/Y2021/V47/I11/22

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