Group signature method with efficient revocation in vehicle networking

Abstract

The invention discloses a group signature method with efficient revocation in vehicle networking with an aim to mainly solve the problem that revocation of group members affects key pairs of group members without revocation in the prior art. According to the technical scheme, the group signature method includes: 1, initiating a system and generating parameters and public key pairs of a general trusted mechanism, a local trusted mechanism and a road administration unit; 2, vehicle users registering in the local trusted mechanism before access to the networking and receiving blind certificates; 3, the road administration unit establishing groups, the vehicle users in the jurisdictional scope submitting the blind certificates and joining in the groups after identity legitimacy is verified; 4, after the group members join in the groups, subjecting messages to signing and broadcasting, and anybody verifying the messages; 5, when new users join in the groups or in case of revocation of the members, the road administration unit calculating and publishing new public keys. With the method, efficient and safe joint and revocation in the road administration in the vehicle networking and anonymity of the users to the road administration can be realized, and track on user mobile trajectories is avoided.

Description

technical field [0001] The present invention relates to the field of communication technology, and further relates to a group signature method in the field of Internet of Vehicles information security technology, which can be used to realize the efficient and safe joining and revocation of Internet of Vehicles users in the road administration unit and the anonymity of the user to the road administration unit, as well as to avoid mobile phone calls for users. Trajectory tracking. Background technique [0002] Today's Internet of Vehicles is a large system network for wireless communication and information exchange between vehicles, roads, pedestrians and the Internet in accordance with agreed communication protocols and data interaction standards. It is a large system network that can realize intelligent traffic management, intelligent dynamic information An integrated network of services and intelligent control of vehicles. Because of the fast driving speed, the group updat...

AI Technical Summary

Problems solved by technology

However, in Wang's scheme, the user uses the same public-private key pair when joining any group, so as long as a signed message of the user is obtained, and the user's public key is obtained, the user's action can be located based on this public key track, resulting in the user's privacy cannot be effectively protected

[0007] Although the above methods can achieve efficient cancellation of group members, after being applied to the Internet of Vehicles, there are still disadvantages that the user's privacy cannot be guaranteed, and the user's action trajectory may be tracked.

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