Certificate notification method and apparatus

A non-transitory computer readable storage medium storing a program to be executed by a processor, the program including instructions to:

• report a certificate of a first vehicle to a server, wherein the instructions to report the certificate of the first vehicle to the server include instructions to:
• obtain area configuration information, wherein the area configuration information is a division result obtained by performing area division of an area that is at least one of a unit of at least one base station, a unit of at least one tracking area (TA), or according to a geographical area, and wherein each area corresponds to one area identifier;
• and
• send, to the server, the certificate of the first vehicle and an area identifier of the area to which the first vehicle belongs in response to determining, according to the area configuration information, that an area in which the first vehicle is located is changed, wherein the determining that the area in which the first vehicle is located is changed comprises performing at least one of:
• determining, in response to obtaining geographical location information of the first vehicle, and according to the geographical location information and the area configuration information, that the area to which the first vehicle belongs is changed;
• determining, in response to detecting a new cell global identifier (ECGI), and according to the new ECGI and the area configuration information, that the area to which the first vehicle belongs is changed;
• or
• determining, in response to detecting a new tracking area code (TAC), and according to the new TAC and the area configuration information, that the area to which the first vehicle belongs is changed;
• obtain public key maintenance information from the server, wherein the public key maintenance information comprises a public key corresponding to a certificate of each of one or more vehicles within a preset area range and further comprises certificate identification information corresponding to the certificate of the corresponding vehicle of the one or more vehicles;
• receive a communication message sent by a second vehicle of the one or more vehicles, wherein the communication message comprises certificate identification information corresponding to a certificate of the second vehicle and a signature generated by the second vehicle for the communication message after the second vehicle performs signature calculation on the communication message using a private key corresponding to the certificate of the second vehicle;
• determine, according to certificate identification information corresponding to the certificate of the second vehicle and further according to the public key maintenance information, a public key corresponding to the certificate of the second vehicle;
• and
• verify, according to the public key corresponding to the certificate of the second vehicle, the signature generated by the second vehicle.

A certificate notification apparatus, comprising:

• a transceiver;
• a processor;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:
• cause the transceiver to report a certificate of a first vehicle to a server,
• wherein the instructions to cause the transceiver to report the certificate of the first vehicle to the server include instructions to:
• obtain area configuration information, wherein the area configuration information is a division result obtained by performing area division of an area that is at least one of a unit of at least one base station, a unit of at least one tracking area (TA), or according to a geographical area, and wherein each area corresponds to one area identifier;
• and
• cause the transceiver to send, to the server, the certificate of the first vehicle and an area identifier of the area to which the first vehicle belongs in response to determining, according to the area configuration information, that an area in which the first vehicle is located is changed, wherein the determining that the area in which the first vehicle is located is changed comprises performing at least one of:
• determining, in response to obtaining geographical location information of the first vehicle, and according to the geographical location information and the area configuration information, that the area to which the first vehicle belongs is changed;
• determining, in response to detecting a new cell global identifier (ECGI), and according to the new ECGI and the area configuration information, that the area to which the first vehicle belongs is changed;
• or
• determining, in response to detecting a new tracking area code (TAC), and according to the new TAC and the area configuration information, that the area to which the first vehicle belongs is changed;
• cause the transceiver to obtain public key maintenance information from the server, wherein the public key maintenance information comprises a public key corresponding to a certificate of each of one or more vehicles within a preset area range and further comprises certificate identification information corresponding to the certificate of the corresponding vehicle of the one or more vehicles;
• receive, through the transceiver, a communication message sent by a second vehicle of the one or more vehicles, wherein the communication message comprises certificate identification information corresponding to a certificate of the second vehicle and a signature generated by the second vehicle for the communication message after the second vehicle performs signature calculation on the communication message using a private key corresponding to the certificate of the second vehicle;
• determine, according to certificate identification information corresponding to the certificate of the second vehicle and further according to the public key maintenance information, a public key corresponding to the certificate of the second vehicle;
• and
• verify, according to the public key corresponding to the certificate of the second vehicle, the signature generated by the second vehicle.