INFORMATION PROCESSOR AND METHOD, LICENSE SERVER, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To freely distribute contents and allow only authorized users to utilize the contents. SOLUTION: A client receives an encrypted content from a content server. The header of the content includes license-identifying information for identifying a license required in utilization of the content. The client requests a license server to transmit a license identified by the license-identifying information. When receiving the request for a license, the license server carries out a charging process before transmitting the license to the client. The client can decode and play back the content on the condition of possessing the license.