Information processing apparatus, non-transitory computer readable medium storing program, and information processing system

1. An information processing apparatus, comprising:

a screen that displays a plurality of images consisting of one or more correct answer images selected from a candidate set, which consists of images not including images corresponding to public information of a user in an image group owned by the user, and one or more incorrect answer images other than the one or more correct answer images; and

a processor that performs authentication of the user by having the user select at least one or more of the correct answer images from the plurality of displayed images,

wherein the processor is configured to:

collect public images open to public by the user; and

generate, as the candidate set, a set of images not including images matching the public images collected by the processor and images, of which degrees of image similarity with respect to the public images are equal to or greater than a threshold value, in the image group owned by the user.

2. The information processing apparatus according to claim 1 , wherein the processor is configured to:

collect public information open to public by the user; and

generate the candidate set not including images, which correspond to the public information collected from the image group owned by the user by the processor, in the image group owned by the user.

3. The information processing apparatus according to claim 2 ,

wherein the processor collects information that has a possibility of having been viewed by many unspecified persons, among pieces of information transmitted to outside of the information processing apparatus through a network, as the public information.

4. The information processing apparatus according to claim 2 ,

wherein the processor collects information posted by the user on a social networking service (SNS) as the public information.

5. The information processing apparatus according to claim 4 ,

wherein, even in a case of information posted by the user on the SNS, the processor does not collect the information as the public information in a case where a disclosure range set for the information is narrower than a predetermined reference range.

6. The information processing apparatus according to claim 1 , wherein the processor is configured to:

specify a field of interest of the user from the public information; and

generate the candidate set not including images, which correspond to the field of interest, in the image group owned by the user.

7. The information processing apparatus according to claim 1 ,

wherein the processor collects images, which are transmitted to outside of the information processing apparatus by the user and satisfy a predetermined disclosure criterion, in the image group owned by the user as the public images.

8. The information processing apparatus according to claim 7 ,

wherein the disclosure criterion is posting of an image on an SNS.

9. The information processing apparatus according to claim 8 ,

wherein, even in a case of an image posted by the user on the SNS, in a case where a disclosure range set for the image is narrower than a predetermined reference range, the processor does not collect the image as the public image.

10. The information processing apparatus according to claim 7 ,

wherein a case where the image is an image transmitted to outside of the information processing apparatus by e-mail, the disclosure criterion is that the number of destinations of the e-mail including the image is equal to or greater than a threshold value.

11. The information processing apparatus according to claim 7 ,

wherein, in a case where the image is an image transmitted to outside of the information processing apparatus by e-mail, the disclosure criterion is that destinations of the e-mail including the image include destinations other than destinations within a confidentiality range registered in advance in association with the user.

12. The information processing apparatus according to claim 1 ,

wherein the screen displays images, which are selected from a group of remaining images excluding the correct answer images in the candidate set, as the incorrect answer images.

13. The information processing apparatus according to claim 1 , wherein the processor is configured to:

generate, from attribute information of each image included in the plurality of images, an authentication question that is applicable to the attribute information of the correct answer images but is not applicable to the attribute information of the incorrect answer images,

wherein the screen displays the generated authentication question so as to be associated with the plurality of images.

14. The information processing apparatus according to claim 13 ,

wherein the attribute information of the image includes at least one of metadata included in a file of the image, recognition result information indicating a content of the image obtained by image recognition processing on the image, or information detected by software in the information processing apparatus at a point in time at which the image is captured.

15. The information processing apparatus according to claim 1 ,

wherein the screen does not select images, of which degrees of image similarity with respect to the one or more correct answer images are equal to or greater than a predetermined threshold value, as the incorrect answer images.

16. The information processing apparatus according to claim 1 , wherein the processor is configured to:

present a guidance screen, which shows that authentication by the processor is not available, to the user in a case where the number of images included in the candidate set is less than a threshold value.

17. The information processing apparatus according to claim 16 ,

wherein information prompting acquisition of a new image is further displayed on the guidance screen.

18. The information processing apparatus according to claim 1 , wherein the processor is configured to:

perform control to replace the correct answer images and the incorrect answer images included in the plurality of images with a combination of different correct answer images and different incorrect answer images and display the combination of different correct answer images and different incorrect answer images on the screen in a case where the authentication by the processor fails and the user is made to retry the authentication.

19. The information processing apparatus according to claim 16 , wherein the processor is configured to:

perform authentication using information other than images,

wherein in a case where an instruction to select a processor used for authentication of the information processing apparatus is given from the user, the processor displays a screen, which includes the processor as an option and on which the processor is not selectable, as the guidance screen.

20. The information processing apparatus according to claim 18 ,

wherein the number of images of the plurality of images to be displayed on the screen by the processor is larger than the number of images of the plurality of images displayed on the screen in a previous trial of authentication.

21. The information processing apparatus according to claim 18 ,

wherein the processor causes the information processing apparatus to transition to a lock state for the user in a case where the number of consecutive failures of the authentication reaches a threshold value, and

the threshold value of the number of consecutive failures is a lower value than a threshold value of the number of consecutive failures in a case where the information processing apparatus is transitioned to the lock state in a case where authentication by the processor, which is provided in the information processing apparatus and performs authentication using information other than images, fails consecutively.

22. A non-transitory computer readable medium storing a program causing a computer to function as:

a screen that displays a plurality of images consisting of one or more correct answer images selected from a candidate set, which consists of images not including images corresponding to public information of a user in an image group owned by the user, and one or more incorrect answer images other than the one or more correct answer images; and

a processor that performs authentication of the user by having the user select at least one or more of the correct answer images from the plurality of displayed images,

wherein the processor is configured to:

collect public images open to public by the user; and

generate, as the candidate set, a set of images not including images matching the public images collected by the processor and images, of which degrees of image similarity with respect to the public images are equal to or greater than a threshold value, in the image group owned by the user.

23. An information processing system, comprising:

an information processing apparatus; and

a server,

wherein the information processing apparatus includes

a screen that displays a plurality of images consisting of one or more correct answer images selected from a candidate set, which consists of images not including images corresponding to public information of a user in an image group owned by the user, and one or more incorrect answer images other than the one or more correct answer images, and

a processor that performs authentication of the user by having the user select at least one or more of the correct answer images from the plurality of displayed images, and

the server includes another processor configured to:

collect public information open to public by the user;

generate the candidate set not including images, which correspond to the public information collected from the image group owned by the user by the another processor, in the image group owned by the user;

collect public images open to public by the user; and

generate, as the candidate set, a set of images not including images matching the public images collected by the processor and images, of which degrees of image similarity with respect to the public images are equal to or greater than a threshold value, in the image group owned by the user.