SYSTEM FOR PROVIDING SETS OF CONTENT AND APPLICATIONS AND CONTROL METHOD THEREFOR, TERMINAL AND CONTROL METHOD THEREFOR, AUTHENTICATION DEVICE AND CONTROL METHOD THEREFOR, PROGRAM, AND INFORMATION STORAGE MEDIUM

摘要

Provided is a system for providing sets of content and applications that is capable of restricting the number of terminals on which sets of content and applications can be used, from among a number of terminals including one authorized terminal and one or more unauthorized terminals, to one terminal. A new authentication symbol string is generated in accordance with a production rule and on the basis of at least one part of an authentication symbol string stored on a first authentication symbol string storage unit (100). If the new authentication symbol string belongs to a type of authentication symbol string that can be generated in accordance with the generation rule on the basis of at least one part of an authentication symbol string stored on a second authentication symbol string storage unit (200) in association with the device identification information, usage of the sets of content and applications on a device (10) is permitted and the authentication symbol string stored on the first authentication symbol string storage unit (100) and the authentication symbol string stored on the second authentication symbol string storage unit (200) in association with the device identification information are updated to the new authentication symbol strings.