发明申请
- 专利标题: OFFLINE CONSUMPTION OF PROTECTED INFORMATION
- 专利标题(中): 离线消费受保护信息
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申请号: US12032279申请日: 2008-02-15
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公开(公告)号: US20090208015A1公开(公告)日: 2009-08-20
- 发明人: Pankaj Mohan Kamat , Duncan G. Bryce , Scott C. Cottrille , Gregory Kostal
- 申请人: Pankaj Mohan Kamat , Duncan G. Bryce , Scott C. Cottrille , Gregory Kostal
- 申请人地址: US WA Redmond
- 专利权人: MICROSOFT CORPORATION
- 当前专利权人: MICROSOFT CORPORATION
- 当前专利权人地址: US WA Redmond
- 主分类号: H04L9/00
- IPC分类号: H04L9/00 ; G06F12/14
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.