Granted Patent B2

US 12,401,525 · App. 17/952,195 · Granted Aug 26, 2025

Inventor: Ismail Thanickel (Frisco, TX)

Assignees: TOYOTA MOTOR NORTH AMERICA, INC.; TOYOTA JIDOSHA KABUSHIKI KAISHA

H04L9/3268H04L12/40006H04L2012/40273

Abstract

Claims (61)

1. A method, comprising:

obtaining, by a server, a request from an IoT device associated with a running vehicle;

assigning, by the server, a temporary certificate to the IoT device based on the request and storing the temporary certificate within a list in a memory device of the server along with an indicator which indicates the temporary certificate has not been used, wherein the IoT device and the temporary certificate are associated with the running vehicle;

determining a temporary period of time for which the temporary certificate is valid based on a purpose included in the request;

validating, by the server, that the temporary certificate is not on a list of revoked certificates stored within the memory device;

in response to successful validation, modifying the indicator of the temporary certificate within the list in the memory device to indicate that the temporary certificate has been used;

receiving an additional request from the IoT device, where the additional request includes the validated temporary certificate;

validating, by the server, that the validated temporary certificate is being received within the temporary period of time; and

in response to successful validation of the validated temporary certificate, processing the additional request from the IoT device by the server.

2. The method of claim 1 , wherein the assigning comprises determining that the certificate is not a revoked certificate based on the list of revoked certificates.

3. The method of claim 1 , wherein the validating the temporary certificate comprises:

determining the temporary certificate is not in a revocation list; and

authorizing use of the temporary certificate for the temporary period of time.

4. The method of claim 1 , comprising:

providing the validated temporary certificate in place of an original certificate for a time period.

5. The method of claim 1 , comprising:

determining the temporary period of time has expired;

notifying the IoT device the temporary certificate has expired;

assigning a single-use temporary certificate to the IoT device; and

validating the single-use temporary certificate.

6. A system, comprising:

a processor; and

a memory, coupled to the processor, comprising instructions that when executed by the processor are configured to:

obtain, by a server, a request from an IoT device associated with a running vehicle;

assign, by the server, a temporary certificate to the IoT device based on the request and store the temporary certificate within a list in a memory device of the server along with an indicator which indicates the temporary certificate has not been used, wherein the IoT device and the temporary certificate are associated with the running vehicle;

determine a temporary period of time for which the temporary certificate is valid based on a purpose included in the request;

validate, by the server, that the temporary certificate is not on a list of revoked certificates stored within the memory device;

in response to successful validation, modify the indicator of the temporary certificate within the list in the memory device to indicate that the temporary certificate has been used;

receive an additional request from the IoT device, where the additional request includes the validated temporary certificate;

validate, by the server, that the validated temporary certificate is being received within the temporary period of time; and

in response to successful validation of the validated temporary certificate, process the additional request from the IoT device by the server.

7. The method of claim 1 , comprising:

receiving an additional request to validate the temporary certificate; and

authorizing the additional request without checking the list of revoked certificates stored within the memory device of the server based on the indicator indicating the temporary certificate has been used.

8. The system of claim 6 , wherein the processor is configured to determine the certificate is not revoked based on the list of revoked certificates.

9. The system of claim 6 , wherein the processor is configured to:

determine the temporary certificate is not in a revocation list; and

authorize use of the temporary certificate for the temporary period of time.

10. The system of claim 6 , wherein the instructions are configured to:

provide the validated temporary certificate in place of an original certificate for a time period.

11. The system of claim 6 , wherein the instructions are configured to:

determine the temporary period of time has expired;

notify the IoT device the temporary certificate has expired;

assign a single-use temporary certificate to the IoT device; and

validate the single-use temporary certificate.

12. A non-transitory computer readable storage medium comprising instructions, that when read by a processor, cause the processor to perform:

obtaining, by a server, a request from an IoT device associated with a running vehicle;

assigning, by the server, a temporary certificate to the IoT device based on the request and storing the temporary certificate within a list in a memory device of the server along with an indicator which indicates the temporary certificate has not been used, wherein the IoT device and the temporary certificate are associated with the running vehicle;

determining a temporary period of time for which the temporary certificate is valid based on a purpose included in the request;

validating, by the server, that the temporary certificate is not on a list of revoked certificates stored within the memory device;

in response to successful validation, modifying the indicator of the temporary certificate within the list in the memory device to indicate that the temporary certificate has been used;

receiving an additional request from the IoT device, where the additional request includes the validated temporary certificate;

validating, by the server, that the validated temporary certificate is being received within the temporary period of time; and

in response to successful validation of the validated temporary certificate, processing the additional request from the IoT device by the server.

13. The non-transitory computer readable storage medium of claim 12 , wherein the assigning comprises determining the certificate is not revoked based on the list of revoked certificates.

14. The non-transitory computer readable storage medium of claim 12 , wherein the validating the temporary certificate comprises:

determining the temporary certificate has not been used;

determining the temporary certificate is not in the list of revoked certificates; and

authorizing use of the temporary certificate for a time period.

15. The non-transitory computer readable storage medium of claim 12 , wherein the instructions cause the processor to perform:

providing the validated temporary certificate in place of an original certificate for a time period.

Assignments (2)

Continuity (1)

References Cited (32)