Abstract:

Because the trust relationship between the vehicles running on the expressway has not been established in advance, there is a lack of trust and hidden safety hazards when the vehicles perform cooperative download services with each other, which seriously affects the development of cooperative download. In order to achieve a trusted secure cooperative download service, a trust management solution based on the SORT algorithm is proposed, and appropriate vehicles are selected for cooperation through the service trust value. An incentive mechanism and a fair trade agreement are designed to ensure the enthusiasm and fairness of the cooperative download. Blockchain is applied. Technology stores and protects the vehicle’s identity, privacy, and data. The analysis results show that the scheme can enable users to select trusted vehicles for safe cooperative download services, and promote the download efficiency of vehicle users.

Key words: Internet of vehicles, trust management, cooperative download, blockchain

摘要：

由于高速公路上行驶的车辆间未预先建立信任关系，车辆相互进行合作下载服务时，存在信任危机及安全隐患，严重影响合作下载的发展。为实现可信任的安全合作下载服务，提出基于SORT算法的信任管理方案，通过服务信任值选择合适的车辆进行合作，设计激励机制和公平交易协议保证合作下载的积极性和公平性，应用区块链技术对车辆的身份隐私以及数据信息进行存储和保护。分析结果表明，该方案能够使用户选择可信任的车辆进行安全的合作下载服务，促进车辆用户下载效率的提高。

关键词: 车联网, 信任管理, 合作下载, 区块链