CROSS-REFERENCE TO RELATED APPLICATION

This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. 2018-6223, filed on Jan. 18, 2018, the entire contents of which are incorporated herein by reference.

FIELD

The embodiment discussed herein is related to a technique of estimating a risk with an apparatus to be authenticated by an authentication apparatus.

BACKGROUND

An authentication server that authenticates a program that operates on a device is occasionally used in order to ensure the security of communication with the device. When the authentication server performs credential authentication on the program which operates on the device, spoofing for the program may be suppressed.

Once the program which operates on the device is infected with a virus, however, a fraudulent communication process may not be suppressed by the credential authentication by the authentication server. If the device which is infected with the virus communicates with the outside, the virus may be spread. Japanese National Publication of International Patent Application No. 2016-518633, for example, is disclosed as the related art.

In view of the above, it is desirable to estimate a risk with a device to be authenticated.

SUMMARY

According to an aspect of the embodiments, A determination method executed by a computer that serves as an authentication apparatus for a program that operates on a device, the determination method includes counting a number of times of execution of a first process related to the device and determining, in a case where an authentication request for the program that includes a number of times of execution of a second process in the device is received, whether or not it is required to verify the device based on a result of comparison between the number of times of execution of the first process and the number of times of execution of the second process.

The object and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the claims.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention.

