A distributed authentication method for Internet of Vehicles based on block chain technology

Abstract

The present invention relates to the field of access authentication in the Internet of Vehicles, in particular to a distributed authentication method for the Internet of Vehicles based on block chain technology. Based on the principle of high reliability and high efficiency, under the premise of considering the trust of edge nodes, RSU spontaneously establishes an edge authentication chain through three-stage broadcasting, thereby dividing the Internet of Vehicles into multiple edge authentication areas; RSUs in the area pass Chebyshev The semi-group characteristics of the mapping realize the rapid authentication of local vehicles; the RSU as a blockchain node stores the authentication records of the vehicles, and when the vehicle behavior changes, the local vehicle list is updated in time; finally, the random oracle model is used to verify the proposed authentication scheme. The security of the invention is proved; the invention can realize distributed access authentication with high efficiency and high reliability under the premise of considering the RSU trust problem.

Description

technical field [0001] The invention relates to the field of access authentication in the Internet of Vehicles, in particular to a distributed authentication method for the Internet of Vehicles based on block chain technology. Background technique [0002] In recent years, privacy and security issues in the Internet of Vehicles (IoV, Internet of Vehicles) have become a hot issue. Ensuring the safe and efficient access of legal on-board units (OBU, On Broad Units) to IoV is the key to solving this problem. Therefore, the design of the access authentication protocol is very important. [0003] Authentication protocols in IoV can be divided into two categories: centralized authentication and distributed authentication. Among them, there are three main problems in centralized authentication. First, due to the large number of vehicle nodes, this will bring huge authentication pressure to the central server; second, when edge vehicles perform access authentication, they need to s...

AI Technical Summary

Problems solved by technology

[0005] Traditional IoV distributed authentication directly uses Road Side Unit (RSU, Road Side Unit) to verify the identity of the vehicle. However, RSU is extremely vulnerable to various attacks. Therefore, the trust issue of RSU must be considered in distributed authentication.

In addition, the bilinear mapping operation is a common method in identity authentication. However, due to its long calculation delay, it is not suitable for the delay-sensitive Internet of Vehicles. Therefore, the efficiency of the authentication protocol in the existing technology needs to be improved.

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