Abstract: The present invention provides an information processing device, an information processing system, and a program capable of improving security and convenience. An information processing system (1) includes an IC card (30) which stores an encryption key and a registered password and allows the encryption key to be read when the IC card (30) has authenticated the user as an authorized user based on the registered password, and an information processing device (10) which stores folder information in which the folder name, path, and hash value of the encryption key are associated, when a request to save data in the folder has been issued from the user, decides whether or not an encryption key corresponding to the folder is included in the encryption key read from the IC card (30) based on the folder information, encrypts the request target data using the corresponding encryption key when the information processing device (10) has decided “YES”, and stores the encrypted data.

Abstract: An image file creation device comprises: a thumbnail image creation device which creates two or more types of thumbnail images on the basis of a three-dimensional image; a three-dimensional image file creation device which creates a three-dimensional image file from the three-dimensional image; and a thumbnail image file creation device which creates a thumbnail image file in which the created two or more types of thumbnail images are combined and recorded and which is associated with the three-dimensional image file. Thus, the thumbnail image file in which two or more types of thumbnail images corresponding to the three-dimensional image are combined and recorded is also created together with the three-dimensional image file. Therefore, this thumbnail image file has compatibility with 3D image reproduction devices having various specifications for thumbnail image reproduction.

Abstract: An image reproduction device comprises: a thumbnail image read device which reads a thumbnail image file having recorded thereon two or more types of thumbnail images produced based on a stereo image composed of a plurality of images obtained by capturing the identical subject from a plurality of viewpoints; a thumbnail image selection device which selects one thumbnail image to be used for displaying from among the plurality of thumbnail images recorded on the read thumbnail image file; and a thumbnail image reproduction device which causes the selected thumbnail image to be displayed on a display device. Thereby, the device enables to reproduce in a short length of time, an optimum one of different thumbnail images of plural types, or a thumbnail image of a type desired by a user.

Abstract: The present invention provides an information processing device, an information processing system, and a program capable of improving security and convenience. An information processing system (1) includes an IC card (30) which stores an encryption key and a registered password and allows the encryption key to be read when the IC card (30) has authenticated the user as an authorized user based on the registered password, and an information processing device (10) which stores folder information in which the folder name, path, and hash value of the encryption key are associated, when a request to save data in the folder has been issued from the user, decides whether or not an encryption key corresponding to the folder is included in the encryption key read from the IC card (30) based on the folder information, encrypts the request target data using the corresponding encryption key when the information processing device (10) has decided “YES”, and stores the encrypted data.