Certificate management method, certificate authorization center, management node and vehicle networking terminal

The invention provides a certificate management method, a certificate authorization center, a management node and an Internet of Vehicles terminal, and the method comprises the steps: receiving a safety message certificate application request sent by the Internet of Vehicles terminal, wherein the security message certificate application request comprises identity information of a vehicle where the Internet of Vehicles terminal is located, and a private key corresponding to a vehicle certificate of the vehicle where the Internet of Vehicles terminal is located is used for signing the security message certificate application request; acquiring a vehicle certificate of the vehicle from a block chain digital certificate management node according to the identity information of the vehicle; verifying a signature of the security message certificate application request by using a public key corresponding to the vehicle certificate, and issuing a security message certificate to the Internet of Vehicles terminal after