公开(公告)号：EP1498819A4

公开(公告)日：2008-03-05

申请号：EP04717887

申请日：2004-03-05

Applicant: SONY CORP

Inventor： NAKAYAMA TSUYOSHI ,  MORI CHIKAKO ,  KITAYA YOSHIMICHI ,  KOUNO YOSHIKAZU

IPC: G06F12/14 ,  G06F21/10 ,  G06F21/62 ,  G09C1/00 ,  G11B20/00 ,  G11B20/10 ,  H04L9/08

CPC classification number: G06F21/10 ,  G11B20/00086 ,  G11B20/00202 ,  G11B20/0021 ,  G11B20/00847 ,  H04L9/0836 ,  H04L2209/60

Abstract: There are provided an information recording medium, an information processing device, and method realizing user-friendliness in the content use according to a license and copyright protection. The information recording medium stores an encrypted content file containing an encrypted content, encrypted content use right information, and encryption key information required in decryption processing of the encrypted content. Accordingly, a user can acquire from the information recording medium not only the content but also the license (use right information) and the key information required for decryption of the content without performing connection to a license provider for acquiring a license (use right). Consequently, when using a content, there is no need of performing license (use right) acquisition processing from the license provider. This improves the user-friendliness and guarantees the content use right management based on the license.