Vehicle privacy protection method based on blockchain and blind signature

Abstract

The invention discloses a vehicle privacy protection method based on a blockchain and a blind signature, and belongs to the field of Internet of Things. The method comprises: firstly, a public and private key pair generated by a vehicle is obtained, and a digital certificate is obtained from a digital certificate authentication mechanism through a blind signature algorithm and an anonymous certification mode; meanwhile, the digital certificate authentication mechanism enables the obtained certificates to be in one-to-one correspondence with the public keys of the vehicle; when the CA issues adigital certificate to the vehicle, the public key of the vehicle is stored in the blockchain; when communication occurs between vehicles, in order to confirm the legality of the identity of the vehicle, a receiver needs to use a public key of a sender to perform hash operation to obtain a Merkel root value, and compares the calculated root value with the root value in the blockchain in an anonymous authentication mode to confirm the legality of the vehicle. According to the method, the blockchain technology is applied to vehicle privacy protection, the problems of vehicle identity informationprivacy, vehicle certificate storage and vehicle identity authentication in a vehicle network are solved, and the method is an effective vehicle privacy protection method.

Description

technical field [0001] The invention relates to a vehicle privacy protection method based on blockchain and blind signature, which belongs to the field of Internet of Things. Background technique [0002] Vehicular ad hoc networks (VANETs) are based on intra-vehicle network, inter-vehicle network, and vehicle-mounted mobile Internet. A large system network for wireless communication and information exchange. There are two types of communication in VANETs, ​​namely vehicle-to-vehicle (V2V) communication and vehicle-to-infrastructure (V2I) communication. By way of dedicated short-range communication (DSRC) radio communication, nearby vehicles exchange messages in V2V and directly communicate with roadside units (RSUs) in V2I. However, due to the unique characteristics of VANETs (such as high mobility and variability), they are vulnerable to various attacks. Therefore, the safety and privacy of vehicles should be considered in VANETs. [0003] In order to solve the problem ...

AI Technical Summary

Problems solved by technology

However, due to the unique characteristics of VANETs, ​​such as high mobility and variability, they are vulnerable to various attacks

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