With the development of wireless local area networks and intelligent transportation technologies, the Internet of Vehicles is considered to be an effective method to alleviate the severe situation of the current transportation system. The vehicles in the Internet of Vehicles system build the Vehicular Ad Hoc Networks through wireless communication technology and dynamically provide different services through the real-time driving information broadcast by the vehicles. Vehicle drivers can control the distance, planning the driving route, between vehicles according to the current traffic environment, which improves the overall safety and efficiency of the traffic system. Due to the particularity of the Internet of Vehicles system service, vehicles need to broadcast their location information frequently. Attackers can collect and analyze vehicle broadcast information to steal privacy and even directionally track the owner through the driving trajectory, bringing serious security risks. This paper proposes a blockchain-based privacy protection system for the Internet of Vehicles. The system combines the blockchain with the Internet of Vehicles system to design a safe and efficient two-way authentication and key agreement algorithm through encryption and signature algorithm, which also solves the central dependency problem of the traditional Internet of Vehicles system.

中文翻译：

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基于区块链的车辆互联网隐私保护系统

随着无线局域网和智能交通技术的发展，车联网被认为是缓解当前交通系统严峻形势的有效方法。车辆互联网系统中的车辆通过无线通信技术建立了车辆自组织网络，并通过车辆广播的实时驾驶信息动态地提供不同的服务。车辆驾驶员可以根据当前的交通环境控制车辆之间的距离，规划行驶路线，从而提高了交通系统的整体安全性和效率。由于车辆互联网系统服务的特殊性，车辆需要经常广播其位置信息。攻击者可以收集和分析车辆广播的信息，以窃取隐私，甚至可以通过驾驶轨迹定向跟踪车主，从而带来严重的安全风险。本文提出了一种基于区块链的车联网隐私保护系统。该系统将区块链与车联网系统相结合，通过加密和签名算法设计一种安全高效的双向认证和密钥协商算法，也解决了传统车联网系统的核心依赖问题。