发明名称 |
MULTIPLE ENCRYPTION OF A SINGLE DOCUMENT PROVIDING MULTIPLE LEVEL ACCESS PRIVILEGES |
摘要 |
A method and system for selectively encrypting and decrypting different sections of a document provides different access levels in a technique employing different keys. The documents may be encrypted at a document section level ("section" here used according to its general meaning) and uses a different set of encryption keys for each section. A user A with an access level 1 may access only those section encoded with access level 1 plus unencoded sections. An application example of this technique is in hospitals. A patients records may each be segmented into separately-encrypted portions giving access to nurses for only suitable material while giving broader access to doctors. The nurse would be provided with his/her access level private key to gain access to those parts of the document for which nurses have rights. There could also be a level to which only the primary care physician or health care proxy has access. |
申请公布号 |
WO0201271(A8) |
申请公布日期 |
2002.02.07 |
申请号 |
WO2001EP07090 |
申请日期 |
2001.06.22 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
KRASINSKI, RAYMOND;ROSNER, MARTIN |
分类号 |
G06F12/14;G06F21/62;H04L9/08;H04L9/16 |
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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