Internet of Vehicles node data security communication method based on block chain

Abstract

The invention relates to an Internet of Vehicles node data security communication method based on a block chain, and the method comprises the steps: dividing a whole network into honeycomb regions with the same size, designing an Internet of Vehicles alliance chain and an inter-region public chain in units of regions, guaranteeing the data traceability, and improving the data consensus efficiency;in the vehicle data communication process, mutual trust between nodes is guaranteed through vehicle identity authentication, data is divided into common data and emergency data according to differenturgency of the data, the common data are communicated in areas, the emergency data is communicated among multiple areas, different data classifications adopt different block structures, and the dataconsensus efficiency is improved; and meanwhile, the motion condition of the Internet of Vehicles node is also considered, and an improved practical Byzantine fault-tolerant consensus method is adopted to realize data security communication of the Internet of Vehicles node, so that the data security risk caused by centralized data storage can be resisted. The consensus speed is high, data securityand information privacy can be protected, the data storage space is reduced, and the communication efficiency is high.

Description

Technical field: [0001] The invention relates to the technical field of block chains, in particular to a block chain-based method for secure communication of vehicle network node data. Background technique: [0002] In recent years, intelligent vehicles have increasingly occupied an important position in the automotive market. The Internet of Vehicles is one of the core technologies of intelligent vehicles. Its development can promote intelligent transportation and provide convenient information services. However, it periodically broadcasts information such as its current location, speed, and acceleration to surrounding neighbors, which poses a potential threat to vehicle data security. The existing Internet of Vehicles architecture is centralized, relying on trusted third-party entities to centrally manage vehicle information. However, once the centralized entity is attacked, it will bring serious data security risks and cause privacy leakage such as identity, location, an...

AI Technical Summary

Problems solved by technology

However, these methods do not consider the classification of data, and it is difficult to use blockchain technology to efficiently process the data of large-scale nodes of the Internet of Vehicles in real time.

[0005] To sum up, the existing block chain-based vehicle networking node data security communication methods have problems such as storage and maintenance difficulties, low communication efficiency, real-time processing difficulties, and potential safety hazards.

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