Distributed authentication method of Internet of Vehicles based on blockchain technology

Abstract

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 the blockchain technology. The method comprises the steps that when access authentication is carried out on a vehicle identity in an Internet of Vehicles distributed authentication system, by taking high reliability and high efficiency of authentication as a principle on the premise of considering an edge node trust problem, an RSU spontaneously establishes an edge authentication chain through three-stage broadcast, so that the Internet of Vehicles is divided into a plurality of edge authentication areas; the RSU in the area realizes the rapid authentication of local vehicles through half-group characteristics of Chebyshev mapping; the RSU serving as a blockchain node stores the authentication record of the vehicle, and when the behavior of the vehicle changes, the local vehicle list is updated in time; and finally, the security of the proposed authentication scheme is proved by using a random oracle model. According to the invention, high-efficiency and high-reliability distributed access authentication can be realized on 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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