Internet-of-Vehicles trust management method and system based on block chain

Abstract

The invention provides an Internet-of-Vehicles trust management method and system based on a block chain. The method comprises the following steps that: S1, a certificate management mechanism dividesa road side unit into different clusters from a first layer to a fourth layer; S2, the vehicle communicates with the vehicle-mounted network, and shares messages in the first layer cluster; S3, the leader of the first-layer cluster sends the message to the leader of the second-layer cluster; S4, the user electronic certificate is written into a key management subsystem by the leader of the second-layer cluster; S5, the message is sent to the fourth layer cluster from the first layer cluster and is compressed step by step in the sending process; S6, user reputation information is written by theleader of the fourth-layer cluster; and S7, a certificate administrator is added into the fourth-layer cluster so as to add new vehicle information and restore wrong blocks into the block chain. According to the invention, different scalability requirements of a key management subsystem and a user reputation management subsystem in big data and a vehicle-mounted network can be met, and messages in the Internet of Vehicles can be reasonably compressed and stored.

Description

technical field [0001] The invention relates to the technical field of the Internet of Vehicles, in particular to a blockchain-based trust management method for the Internet of Vehicles and a blockchain-based trust management system for the Internet of Vehicles. Background technique [0002] The in-vehicle network can provide Internet services for vehicles, which can improve the safety and efficiency of vehicles. At present, the Internet of Vehicles usually includes: 1. Vehicle: the vehicle applies for an electronic certificate from the service provider, and then sends a message, feedbacks false information, etc.; 2. Roadside unit: the roadside unit receives the vehicle's message and electronic certificate application and forwards it to the security management 3. Security administrator: the certificate management agency (certification center) is in the top-level controller network, and forwards the message to the certificate management agency after the security administrator...

AI Technical Summary

Problems solved by technology

Both schemes can improve the performance of the vehicular network, but the current research cannot meet the scalability requirements of the two schemes at the same time

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