Currently, connected vehicles have gradually stepped into our daily lives, and they generally rely on vehicular networks to generate and exchange traffic-related messages to improve the overall travel safety and efficiency. However, due to the open nature of vehicular networks, these traffic-related messages could be erroneous, which may be caused by various reasons, ranging from an onboard device (OBD) sensor malfunctioning and reporting incorrect reading to the message being tampered by a malicious vehicle. To address these rapidly increasing security challenges, we have proposed an AI-enabled trust management system (AIT) in this article, which is an AI-enabled trust management system for vehicular networks using the blockchain technique. In the AIT system, each vehicle first senses, generates, and exchanges messages with other vehicles. These messages then get validated by the neighboring vehicles. As vehicles receive and validate messages from other nearby vehicles, they will establish and manage the trust of those nearby vehicles, which is enabled by utilizing the deep learning algorithm. Once a vehicle identifies untrustworthy vehicles, it reports them to the nearby roadside unit (RSU), and the RSU will validate the authenticity of the report as well as the identity of the vehicle by using the emerging blockchain technique. The security credentials of untrustworthy vehicles will then be revoked by the RSU. We have conducted an extensive experimental study to evaluate the AIT system. Simulation results clearly indicate that AIT performs better than existing approaches and can manage the trust of vehicles and detect malicious ones in an accurate and efficient manner.

中文翻译：

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AIT：使用区块链技术的车载网络AI支持的信任管理系统

当前，联网车辆已逐渐进入我们的日常生活，并且它们通常依赖于车辆网络来生成和交换与交通有关的消息，以提高总体旅行安全性和效率。但是，由于车载网络的开放性，这些与流量相关的消息可能是错误的，可能是由多种原因引起的，从车载设备（OBD）传感器故障和报告错误的读取到被恶意软件篡改的消息车辆。为了应对这些迅速增长的安全性挑战，我们在本文中提出了一种支持AI的信任管理系统（AIT），它是使用区块链技术的用于车辆网络的支持AI的信任管理系统。在AIT系统中，每辆车首先会感应，生成并与其他车交换消息。然后，这些消息将被附近的车辆验证。当车辆接收并验证来自附近其他车辆的消息时，它们将建立和管理这些附近车辆的信任，这通过利用深度学习算法来实现。一旦车辆识别出不可靠的车辆，它将向附近的路边单位（RSU）报告，RSU将使用新兴的区块链技术来验证报告的真实性以及车辆的身份。RSU将撤消不可靠车辆的安全凭证。我们进行了广泛的实验研究，以评估AIT系统。仿真结果清楚地表明，AIT的性能优于现有方法，并且可以管理车辆的信任并以准确有效的方式检测到恶意车辆。