Vehicle Networking Authentication and Key Agreement Method Based on Certificateless Aggregate Signature

Abstract

The present invention discloses a vehicle network authentication and key negotiation method based on certificateless aggregate signature. The methods mainly include: A. Key establishment: the public-private key pair of the vehicle is bound to the real identity, even if the temporary identity changes, The public-private key pair of the vehicle will not be updated; B. Registration and authorization: By saving the random number for the vehicle application and the real identity of the vehicle in the temporary identity index database constructed, it provides the registration tracking center for the subsequent tracing of the vehicle; C. Authentication and encryption Key negotiation: By introducing random parameters, the vehicle reconstructs the secret pre-signature issued by the registration tracking center for the temporary identity of the vehicle in the authorization issuance stage, and the roadside facility (RSU) aggregates and forwards the signature information of the vehicle; this method has conditional anonymity , Can resist temporary private key leakage attack, high security, high authentication efficiency and low system overhead.

Description

technical field [0001] The invention relates to a vehicle network authentication and key agreement method based on certificateless aggregate signature. Background technique [0002] The Internet of Vehicles is a typical application of the Internet of Things in the field of transportation systems, and has become the key to alleviating existing traffic problems and meeting the needs of comfortable driving. The Internet of Vehicles is mainly composed of the following communication entities: vehicles equipped with on-board units (OBU), roadside facilities (RSU), cloud servers, and key generation centers (KGC) and registration tracking centers as trusted institutions. First, the key generation center (KGC) generates keys for each communication entity, and then under the supervision and control of the registration tracking center, the vehicle establishes communication with the roadside facility (RSU) through a dedicated short-range communication protocol, and the roadside facility...

AI Technical Summary

Problems solved by technology

Although this method realizes the conditional anonymity of vehicles and the batch authentication of vehicles, the temporary identity of the vehicle in this method has a certain binding relationship with the public-private key pair of the vehicle, and the public-private key pair of the vehicle will be updated frequently with the change of its temporary identity. Thereby greatly increasing the additional overhead of the system