Patent ID: 7555648

Claim:
A content management system comprising: a unit which accepts a storage request including change content obtained by changing content whose utilization restriction is released by right data and a content ID to identify the content; a unit which, based on the storage request, makes reference to a recording unit which records utilization restricting data used to restrict the utilization of the content and the content ID in association with each other to create a storage content obtained by restricting the use of the change content by using the utilization restricting data; a storage unit which issues a storage content ID to identify the storage content, provides a storage request issuer with the storage content ID, and records in the recording unit the storage content ID and the storage content in association with each other; a unit which accepts an acquisition request including the storage content ID; a unit which reads the storage content from the recording unit based on the acquisition request; and a unit which distributes the storage content read based on the acquisition request to an acquisition request issuer.