Motorcade establishment and management method and system based on block chain and PKI authentication mechanism

Abstract

The invention belongs to the technical field of safety communication between motorcades in Internet of Vehicles, and discloses a motorcade establishment and management method and system based on a block chain and a PKI authentication mechanism. The method is mainly divided into two parts of motorcade establishment and group key agreement and update; the motorcade establishment part comprises the following main processes of member registration, member identity authentication and group head aggregate signature; and the group key agreement and update part comprises the following main processes ofgroup key agreement and group key update for dynamic joining and exiting of a vehicle. According to the method and the system, the block chain is combined with the PKI authentication mechanism, a problem of identity authentication of the vehicle, a server and an RSU in the Internet of Vehicles is solved; the motorcade establishment is completed based on an elliptic curve, a bilinear pairing technology and an aggregate signature; and the group key agreement and update can be realized based on a DDH difficulty problem, the forward and backward safety is achieved, and the safety of member communication in the motorcade is ensured.

Description

technical field [0001] The invention belongs to the technical field of secure communication between fleets in the Internet of Vehicles, and in particular relates to a method and system for forming and managing fleets based on block chains and PKI authentication mechanisms. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: From the introduction of the Internet of Vehicles to today, the Internet of Vehicles technology has undergone tremendous changes. It is no longer the traditional communication service before, but has evolved into a vehicle-to-vehicle, vehicle-to-road, Interconnected communication between cars and people, as well as between cars and the Internet. The development and improvement of the Internet of Vehicles system ultimately depends on breakthroughs in related core technologies. All user systems have authentication and authorization functions. In the field of vehicle identity authentication, sch...

AI Technical Summary

Problems solved by technology

[0007] In summary, the problems in the prior art are: the identity authentication problem between the vehicle and the server and RSU in the Internet of Vehicles; the security problem and the efficient communication problem in the VANET communication

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