Department of Computer Science, College of Computing and IT, Shaqra University, Shaqra 15526, Saudi Arabia.
College of Computer and Information Science, King Saud University, Riyadh 11442, Saudi Arabia.
Sensors (Basel). 2023 Feb 28;23(5):2670. doi: 10.3390/s23052670.
License Plate Recognition (LPR) is essential for the Internet of Vehicles (IoV) since license plates are a necessary characteristic for distinguishing vehicles for traffic management. As the number of vehicles on the road continues to grow, managing and controlling traffic has become increasingly complex. Large cities in particular face significant challenges, including concerns around privacy and the consumption of resources. To address these issues, the development of automatic LPR technology within the IoV has emerged as a critical area of research. By detecting and recognizing license plates on roadways, LPR can significantly enhance management and control of the transportation system. However, implementing LPR within automated transportation systems requires careful consideration of privacy and trust issues, particularly in relation to the collection and use of sensitive data. This study recommends a blockchain-based approach for IoV privacy security that makes use of LPR. A system handles the registration of a user's license plate directly on the blockchain, avoiding the gateway. The database controller may crash as the number of vehicles in the system rises. This paper proposes a privacy protection system for the IoV using license plate recognition based on blockchain. When a license plate is captured by the LPR system, the captured image is sent to the gateway responsible for managing all communications. When the user requires the license plate, the registration is done by a system connected directly to the blockchain, without going through the gateway. Moreover, in the traditional IoV system, the central authority has full authority to manage the binding of vehicle identity and public key. As the number of vehicles increases in the system, it may cause the central server to crash. Key revocation is the process in which the blockchain system analyses the behaviour of vehicles to judge malicious users and revoke their public keys.
车牌识别（LPR）对于车联网（IoV）至关重要，因为车牌是区分车辆进行交通管理的必要特征。随着道路上车辆数量的不断增加，管理和控制交通变得越来越复杂。特别是大城市面临着重大挑战，包括隐私问题和资源消耗问题。为了解决这些问题，车联网中自动 LPR 技术的发展已成为一个关键的研究领域。通过在道路上检测和识别车牌，LPR 可以显著增强交通系统的管理和控制。然而，在自动化交通系统中实施 LPR 需要仔细考虑隐私和信任问题，特别是在涉及收集和使用敏感数据方面。本研究提出了一种基于区块链的 IoV 隐私安全方法，该方法利用 LPR。系统直接在区块链上处理用户车牌的注册，避免了网关。随着系统中车辆数量的增加，数据库控制器可能会崩溃。本文提出了一种基于区块链的车牌识别 IoV 隐私保护系统。当 LPR 系统捕获车牌时，捕获的图像将被发送到负责管理所有通信的网关。当用户需要车牌时，注册是通过直接连接到区块链的系统完成的，而无需经过网关。此外，在传统的 IoV 系统中，中央权威机构拥有完全的权限来管理车辆身份和公钥的绑定。随着系统中车辆数量的增加，中央服务器可能会崩溃。密钥吊销是指区块链系统分析车辆行为以判断恶意用户并吊销其公钥的过程。
