发明名称 |
Self-protecting documents |
摘要 |
<p>A system and method for the secure distribution of electronic documents reduces the likelihood of unauthorized reproduction and redistribution by either authorized or unauthorized recipients. A self-protecting document (SPD) contains an encrypted document as well as a secure set of permissions and the software necessary to process the document; full decryption of the document is performed as late as possible so as to minimize the possibility of intercepting the document before it has been fully rendered to screen or to paper.</p> |
申请公布号 |
EP0999488(B1) |
申请公布日期 |
2005.08.31 |
申请号 |
EP19990121165 |
申请日期 |
1999.10.22 |
申请人 |
CONTENTGUARD HOLDINGS, INC. |
发明人 |
RAM, PRASAD;TA, THANH T.;WANG, XIN |
分类号 |
G06F12/14;G06F1/00;G06F21/00;G06F21/24;H04L9/10;(IPC1-7):G06F1/00 |
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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