发明名称 |
OFFLINE CONSUMPTION OF PROTECTED INFORMATION |
摘要 |
The offline consumption and publication of protected information in a networked environment. The offline consumption of protected information is accomplished by having the consuming user maintain a store of asymmetric encryption keys. The protected information is encrypted by the publishing user using a symmetric key and the symmetric key is then encrypted using a public asymmetric key associated with the consuming user. The consuming user received the protected information and a usage policy containing the encrypted symmetric key. The consuming user verifies that it can decrypt the symmetric key using a private asymmetric key maintained by the consumer. The user then decrypts the symmetric key and accesses the content of the protected information.
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申请公布号 |
US2009208015(A1) |
申请公布日期 |
2009.08.20 |
申请号 |
US20080032279 |
申请日期 |
2008.02.15 |
申请人 |
MICROSOFT CORPORATION |
发明人 |
KAMAT PANKAJ MOHAN;BRYCE DUNCAN G.;COTTRILLE SCOTT C.;KOSTAL GREGORY |
分类号 |
H04L9/00;G06F12/14 |
主分类号 |
H04L9/00 |
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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