Internet of vehicles cross-domain identity authentication method based on master-slave multi-chain architecture

By using a master-slave multi-chain architecture and Merkle Patricia Tree optimization, the problems of information isolation and security in cross-domain communication of vehicle-to-everything (V2X) networks are solved, achieving efficient cross-domain identity authentication and query, and improving vehicle communication efficiency and security.

CN122179186APending Publication Date: 2026-06-09BAOTOU NORMAL UNIV OF INNER MONGOLIA UNIV OF SCI & TECH
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Patent Information

Application Number
CN202610320164.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-17
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The single-chain structure of traditional blockchains cannot effectively isolate vehicle information in cross-domain communication in the Internet of Vehicles, resulting in global data visibility, security threats, and low communication efficiency. Merkle trees have excessive computation and storage overhead, and their optimization space is limited, especially in scenarios with limited node resources.

Method used

By adopting a master-slave multi-chain architecture, the blockchain is layered and Merkle Patricia Tree (MPT) is used to optimize the Merkle tree, thereby achieving effective isolation and efficient query of vehicle information. Real-time monitoring by AD is used to prevent malicious attacks, and the path compression feature of MPT is used to improve data query efficiency.

Benefits of technology

It achieves cross-domain isolation and security authentication of vehicle information, reduces the computational burden of cross-domain communication, improves query efficiency, and reduces average authentication latency and redundant data queries.

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Abstract

The invention provides an Internet of Vehicles cross-domain identity authentication method based on a master-slave multi-chain architecture. The method comprises six stages of system initialization, OBU registration, certificate storage, cross-domain identity authentication, certificate updating and certificate revocation. The problems that the traditional IoV adopts a single chain structure of a block chain, the vehicle information of each city cannot be effectively isolated, the risk of privacy disclosure exists, and the query efficiency is low are considered. Therefore, the invention provides a master-slave multi-chain architecture, slave chains of all cities construct a safe cross-domain communication channel through a main chain, and safe isolation of cross-domain vehicle information is achieved. In the aspect of data storage, a Hash mechanism of a Merkel tree is used for processing vehicle information so as to ensure the integrity and non-tampering performance of data, a public part in a Hash path is compressed by means of a prefix tree, and a storage structure based on MPT is constructed so as to improve the query efficiency of the vehicle information. In addition, malicious behaviors of the vehicle are monitored in real time through AD, and therefore safe and efficient cross-domain identity authentication is achieved.
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