VANET Cloud-Assisted Conditional Privacy Preserving Authentication Method for VANET and System Therefor

摘要

According to an embodiment of the present invention, a cloud-assisted conditional privacy preserving authentication method comprises: a vehicle registration step of receiving a certificate signing request message including a vehicle ID and a public key of a vehicle from a vehicle and providing a signed certificate to the vehicle after signing a certificate generated based on the received information with a private key of a certificate authority; a false name issuing step of generating the false name of the vehicle and providing the false name to the vehicle when a false name request message is received from the vehicle; a local certificate issuing step of issuing a local certificate on a corresponding area of the vehicle and proving the local certificate to the vehicle when the local certificate is requested from the vehicle; and a message broadcasting step of broadcasting a beacon message including the false name from the vehicle.