一种基于智能合约的群密钥分发的安全认证算法  

A Smart Contract-based Group Key Distribution for Secure Authentication Algorithm

作　　者：吴昊[1] 代飞 张延年[1] 柴永生[3] WU Hao;DAI Fei;ZHANG Yannian;CHAI Yongsheng(College of Electronic and Information Engineering,Nanjing Vocational Institute of Transport Technology,Nanjing 211188,China;School of Information Engineering,Jiangxi Polytechnic University,Jiujiang 332007,China;Jiangsu Education Examination Institute,Nanjing 210024,China)

机构地区：[1]南京交通职业技术学院电子信息工程学院,江苏南京211188 [2]江西职业技术大学信息工程学院,江西九江332007 [3]江苏省教育考试院,江苏南京210024

出　　处：《无线电通信技术》2025年第1期149-154,共6页Radio Communications Technology

基　　金：2021年江苏省高校“青蓝工程”培养对象优秀教学团队资助项目(苏教师函〔2021〕11号);南京交通职业技术学院重大课题(JZ2103);江苏省教育规划重点课题(K-b/2021/04)。

摘　　要：针对车联网(Vehicular Ad Hoc Networks,VANETs)匿名认证的安全与效率问题,利用区块链技术,提出基于区块链的群密钥分发的安全认证(Blockchain-based Group Key Distribution for Secure Authentication,BGSA)算法。BGSA算法利用路侧单元(Road-Side Units,RSU)作群管理员,利用区块链的不可更改性,通过智能合约(Smart Contract,SC)在群成员间分为群密钥。SC中携带的函数确保能以安全方式分发和更新群密钥。同时BGSA算法采用了轻量级群签名(Group Signature,GS)的消息认证策略。性能分析表明,所提BGSA算法能够防御典型的攻击。相比于同类认证算法,BGSA算法降低了认证消息、传输消息计算、通信开销。For the security and efficiency of anonymous authentication in Vehicular Ad Hoc Networks(VANETs),Blockchain-based Group key distribution for Secure Authentication(BGSA)algorithm is proposed by using blockchain technology.In BGSA algorithm,the Road-Side Units(RSU)is considered as a group manager.The proposed BGSA algorithm that exploits the immutability of blockchain technology to distribute group session keys among group members via a Smart Contract(SC).The SC’s functions enable the group manager to distribute and update the group key in a secure manner.In addition,the lightweight Group Signature(GS)-based message authentication scheme is introduced in BGSA algorithm.Performance analysis shows that the proposed BGSA algorithm is robust against typical adversarial attacks.And the proposed BGSA algorithm is extensively compared to conventional approaches to prove its superiority in reducing the computation and communication costs of verifying and transmitting messages.

关 键 词：车联网 安全认证 智能合约 群签名 群密钥分发 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]