发明名称 |
Access control for digital content |
摘要 |
A recording apparatus operable to apply access control processing to input data content using a set of one or more content keys and to record access-controlled data content on a content storage medium on which a read-only medium identifier is stored comprises: means for encrypting portions of the data content in dependence upon the set of content keys; means for generating content access control data so that decryption of the information content requires access to the read-only medium identifier, the content access control data comprising at least one encrypted version of a respective subset of the set of content keys; and means for recording the encrypted data content and the content access control data on the content storage medium. <IMAGE> |
申请公布号 |
GB0317964(D0) |
申请公布日期 |
2003.09.03 |
申请号 |
GB20030017964 |
申请日期 |
2003.07.31 |
申请人 |
SONY UNITED KINGDOM LIMITED |
发明人 |
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分类号 |
G06F21/24;G06F21/10;G11B20/00;H04L9/08 |
主分类号 |
G06F21/24 |
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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