面向无人驾驶地图更新的安全信任管理方案

地图的实时性和准确性在无人驾驶车辆导航中发挥着重要作用。基于卫星图像的数字地图能够保证地图中道路信息的准确性，但是根据相关路况信息进行实时更新时，由于车辆用户数较多且来源复杂，因此无法确保数据的安全性和可靠性。提出一种基于区块链的认证与信任管理方案。利用无证书签名技术实现车辆的匿名认证，保证车辆身份的可验证性和不可否认性。设计基于区块链的信任管理机制，通过存储在区块链上的历史信任值计算路况消息的可信度，同时将可靠的路况信息发送给地图更新服务器，根据车辆提供信息的真实与否更新车辆信誉值，实现车辆信誉的同步与更新。从计算开销、通信开销和信任管理功能等方面验证了该方案的有效性。仿真结果表明，该方案具有较高的地图更新效率和防骗能力，能够确保数据来源的安全性和可靠性，为无人驾驶车辆提供实时路况更新服务。

Secure Trust Management Scheme for Autonomous Driving Map Updating

The real-time accuracy of a map plays an important role in the navigation of autonomous driving vehicle.A digital map based on satellite images can ensure the accuracy of road information.However, when updating in real time according to the relevant road condition information, owing to the large number of vehicle users and complex sources, the security and reliability of data cannot be ensured.A blockchain-based authentication and trust management scheme is proposed that uses Certificateless Signature(CLS) technology to realize the anonymous authentication of vehicles and ensure the verifiability and non-repudiation of vehicle identity.A trust management mechanism based on blockchain is designed, calculates the reliability of the road condition message using the historical trust value stored in the blockchain, and sends reliable road condition information to the map update server.The vehicle reputation value is updated according to the authenticity of the information provided by the vehicle to realize the synchronization and update of the vehicle reputation.The effectiveness of the scheme is verified in terms of computing costs, communication costs, and trust management function.The simulation results show that the scheme has a high map update efficiency and anti-fraud ability, ensuring the security and reliability of data sources and providing real-time road condition update services for autonomous driving vehicles.