An inter-vehicle message anonymous authentication method and system in an Internet of Vehicles environment

Abstract

The invention relates to an inter-vehicle message anonymous authentication method and system in an Internet of Vehicles environment, in the method, each vehicle has a unique identity, and in communication, a short-term pseudonymous certificate needs to be obtained through TA authentication in advance and is used for proving the legal identity of the vehicle. The vehicle negotiates with each neighbor vehicle a communication authentication secret key through the pseudonym certificate, and then based on the communication secret key, signature and signature verification can be realized through simple and rapid HMAC. Compared with a previous message authentication mode, the method has the advantages that the time required for message authentication each time is shortened on the whole, and the environment of vehicle information communication is improved.

Description

technical field

[0001] The invention relates to the field of message authentication research, in particular to a method and system for anonymous authentication of messages between vehicles under the Internet of Vehicles environment. Background technique

[0002] The frequency of message sending in the Internet of Vehicles is relatively high. To ensure its reliability and real-time performance, there are relatively high requirements for the time of message authentication. In the vehicle privacy protection authentication protocol, the traditional pseudonym certificate-based protocol has problems such as long authentication time and large storage space, while the ID-based authentication protocol uses complex mathematical calculations for authentication. When the vehicle density is relatively high, it is not suitable for OBU with small computing power, which is different from the previous certificate-based message verification and takes a long time.

[0003] Aiming at the probl...

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