| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a right information management method and a right information management device by which a user can be quickly notified of the contents and the right information of the contents managed in the storage medium 11 via the contents processing device 12. <P>SOLUTION: The right information management method for managing a right information of contents retained in a storage medium 11 comprising an authenticated memory region 23 accessible after a mutual authentication is obtained relative to a contents processing device 12 and an ordinary memory region 22 accessible without obtaining the mutual authentication, comprises a step of reading an encrypted right information retained in the authenticated memory region 23, a step of decoding the read encrypted right information and retrieving a plaintext right information, and a step of retaining the plaintext right information in the ordinary memory region 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
