【摘要】 车联网中,身份认证是安全的前提与核心技术,其不仅能够对发送数据的车辆进行合法性验证,还可以协商出临时会话密钥,从而保护关键数据的机密性。文章将区块链应用于认证协议中,设计了一种基于区块链和secGear统一机密计算框架的车联网认证协议,在满足抗抵赖要求的同时实现了跨区域认证,并采用secGear框架实现了认证表的机密计算,进一步保护了认证表的安全。文章利用AVISPA仿真工具和非形式化安全分析证明了协议的安全性,并通过NS3仿真实验与其他方案进行对比分析,证明了该协议具有更好的安全性和适用性。更多还原

【Abstract】 In the Internet of vehicles, identity authentication is the prerequisite and core technology for security. It can not only verify the legality of the vehicle sending the data,but also negotiate a temporary session key to protect the confidentiality of key data. In this paper, the blockchain was applied to the authentication protocol, and a vehicle networking authentication protocol based on the blockchain and secGear unified confidential computing framework was designed. It met the non-repudiation requirements while achieving crossregional authentication, and used the secGear framework to achieve the confidential calculation of the certification table, further protecting the security of the certification table. The AVISPA simulation tool and informal security analysis prove the security of this protocol, and use NS3 simulation experiment and comparative analysis to prove that this protocol has better applicability and advancement.更多还原