| 摘要 |
PROBLEM TO BE SOLVED: To provide an information recording device capable of reducing a time necessary for security control to reduce a burden on a system. SOLUTION: A content hash generated by a content hash calculation part 121 is held by a hash information holding part 122 when check-out of a content such as music data is performed, and the content hash held in the hash information holding part 122 is outputted when check-in is performed. COPYRIGHT: (C)2006,JPO&NCIPI |
