Authentication control device, authentication control method, and authentication control program

1. An authentication control method for an authentication control device, the authentication control method comprising the steps of:

acquiring predetermined identification information regarding an on-vehicle device to be newly added to an on-vehicle network;

determining which of a plurality of types of authentication procedures is to be applied as an authentication process for the on-vehicle device, on the basis of the acquired identification information; and

determining a reliability level representing a degree of trust of a mounting person and a mounting procedure for the on-vehicle device from among a plurality of reliability levels, on the basis of the identification information that is acquired, and determining the authentication procedure corresponding to the determined reliability level.

2. An authentication control device comprising:

an acquisition unit configured to acquire predetermined identification information regarding an on-vehicle device to be newly added to an on-vehicle network; and

a determination unit configured to determine which of a plurality of types of authentication procedures is to be applied as an authentication process for the on-vehicle device, on the basis of the identification information acquired by the acquisition unit, wherein

the determination unit determines a reliability level representing a degree of trust of a mounting person and a mounting procedure for the on-vehicle device from among a plurality of reliability levels, on the basis of the identification information acquired by the acquisition unit, and determines the authentication procedure corresponding to the determined reliability level.

3. The authentication control device according to claim 2 , wherein the identification information is information with which a place where work for mounting the on-vehicle device is performed is identifiable.

4. The authentication control device according to claim 2 , wherein the identification information is at least either one of a product number and a model number of the on-vehicle device.

5. The authentication control device according to claim 2 , wherein the identification information is information with which the on-vehicle device is uniquely identifiable.

6. The authentication control device according to claim 2 , wherein the determination unit determines the authentication procedure to be newly applied, further on the basis of the authentication procedure applied for the on-vehicle device in the past.

7. The authentication control device according to claim 2 , wherein the authentication control device is included in a relay device configured to relay data in the on-vehicle network.

8. The authentication control device according to claim 7 , wherein the identification information is included in an authentication key used in the authentication process with the relay device.

9. The authentication control device according to claim 2 , wherein the plurality of types of authentication procedures include a plurality of authentication procedures different from each other in number of authentication devices performing the authentication process for the on-vehicle device.

10. The authentication control device according to claim 2 , wherein the plurality of types of authentication procedures include a plurality of authentication procedures different from each other in authentication devices performing the authentication process for the on-vehicle device.

11. The authentication control device according to claim 9 , wherein an authentication key used in the authentication process is different for each authentication device.

12. The authentication control device according to claim 9 , wherein a relay device configured to relay data in the on-vehicle network is included in the authentication device.

13. The authentication control device according to claim 12 , wherein, when the authentication process for the on-vehicle device by the relay device has been successfully performed, the relay device instructs another on-vehicle device that is to be a communication partner for the on-vehicle device, to start the authentication process.

14. The authentication control device according to claim 12 , wherein, when the authentication process for the on-vehicle device by the relay device has been successfully performed, the relay device instructs another relay device to start the authentication process.

15. The authentication control device according to claim 2 , wherein each authentication procedure of the plurality of types of authentication procedures has a different security level.

16. The authentication control device according to claim 2 , wherein the determination unit determines the reliability of the on-vehicle device on the basis of the identification information acquired by the acquisition unit, and determines the authentication procedure having a larger number of authentication devices performing the authentication process for the on-vehicle device when the determined reliability is lower.

17. A non-transitory computer readable storage medium storing an authentication control program used in an authentication control device, the authentication control program causing a computer to:

acquire predetermined identification information regarding an on-vehicle device to be newly added to an on-vehicle network;

determine which of a plurality of types of authentication procedures is to be applied as an authentication process for the on-vehicle device, on the basis of the identification information that is acquired; and

determine a reliability level representing a degree of trust of a mounting person and a mounting procedure for the on-vehicle device from among a plurality of reliability levels, on the basis of the identification information that is acquired, and determine the authentication procedure corresponding to the determined reliability level.