Recently, many academic institutions and standardization organizations have conducted research on vehicular communications based on LTE or 5G. As the most important standardization organization of cellular systems, the 3rd Generation Partnership Project (3GPP) has been developing the standard supporting vehicle-to-everything (V2X) services based on LTE, and has already prepared the roadmap toward 5G-based V2X services. With the emergence of new technologies and applications, such as connected autonomous vehicles, 5G-enabled vehicular networks face a variety of security and privacy challenges, which have not been fully investigated. In this article, we first present the infrastructure of 5G-enabled vehicular networks. Then the essential security and privacy aspects of V2X in LTE specified by 3GPP are introduced. After that, as a case study, we investigate the security and privacy issues of a 5G-enabled autonomous platoon, and propose several candidate solutions, including secure group setup with privacy preservation, distributed group key management, and cooperative message authentication. Finally, we discuss the security and privacy challenges in 5G-enabled vehicular networks.

中文翻译：

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支持5G的车载网络中的安全和隐私挑战

最近，许多学术机构和标准化组织已经对基于LTE或5G的车辆通信进行了研究。作为蜂窝系统最重要的标准化组织，第三代合作伙伴计划（3GPP）一直在开发基于LTE的支持车辆到所有（V2X）服务的标准，并且已经准备了基于5G的V2X服务的路线图。随着诸如互联自动驾驶汽车之类的新技术和应用的兴起，支持5G的车载网络面临着各种安全和隐私挑战，这些挑战尚未得到充分研究。在本文中，我们首先介绍启用5G的车载网络的基础架构。然后介绍了3GPP指定的LTE中V2X的基本安全性和隐私性方面。之后，作为案例研究，我们调查了启用5G的自治排的安全性和隐私问题，并提出了几种候选解决方案，包括具有隐私保护功能的安全组设置，分布式组密钥管理和协作消息身份验证。最后，我们讨论了启用5G的车载网络中的安全性和隐私挑战。