发明名称 |
VORRICHTUNG UND VERFAHREN ZUR INFORMATIONSVERARBEITUNG |
摘要 |
An information processing system and method are disclosed in which information processing is performed in a highly efficient manner using an enabling key block (EKB) on the basis of a tree structure including category subtrees. A key tree is produced so as to include a plurality of subtrees that are grouped in accordance with categories and managed by category entities. An EKB is produced so as to include data produced by selecting a path in the key tree and encrypting an upper-level key in the selected path using a lower-level key in the selected path, and the resultant EKB is provided to a device. If a change occurs in state of a category tree capable of processing an EKB identified in the EKB type definition list, a notification of the change in state is sent to an entity that uses the EKB thereby making it possible for an EKB requester to perform processing in accordance with a newest EKB. <IMAGE> |
申请公布号 |
DE60127096(D1) |
申请公布日期 |
2007.04.19 |
申请号 |
DE2001627096 |
申请日期 |
2001.12.21 |
申请人 |
SONY CORP. |
发明人 |
ASANO, TOMOYUKI;OSAWA, YOSHITOMO;OISHI, TATEO;ISHIGURO, RYUJI;TAKI, RYUTA |
分类号 |
G06F12/14;H04L9/00;G06F21/00;G06F21/10;G06F21/62;G06Q30/06;G06Q50/00;G06Q50/10;G10K15/02;G11B20/00;G11B20/10;H04L9/08;H04L29/06;H04N7/167 |
主分类号 |
G06F12/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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