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: 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.