| 摘要 |
PROBLEM TO BE SOLVED: To allow a person having information providing authority to perform content use control smoothly and also to prevent the illegal use of a content with high accuracy. SOLUTION: This system has a copyright holder system 20, a content server 30, a license server 40 and a user system 50, and the ACL setting part 23 of the system 20 sets plural partial use permission conditions to a content as a use permission condition ACL further undergoing structured representation by the combination of OR and AND operations on the basis of the IDs of plural physical elements including media used in the system 50 and a user ID and stores them in an access control list 43. The server 40 controls the use of content by a user 2 by using the list 43, and a condition corresponding to the use situation of the content, for instance, an accounting condition such as the maximum operable number and a charging condition can be set in the access control list. |
