发明名称 Separating keys and policy for consuming content
摘要 In accordance with one or more aspects of the separating keys and policy for consuming content, content has a corresponding leaf license, and the leaf license has one or more associated root policy addenda. Each root policy addenda includes policy identifying when it is permissible to decrypt and consume the content, but excludes a content key to decrypt the content. The content can be decrypted and consumed only if the policy identifies that it is permissible to decrypt and consume the content.
申请公布号 US8353049(B2) 申请公布日期 2013.01.08
申请号 US20080105260 申请日期 2008.04.17
申请人 MICROSOFT CORPORATION;BROMLEY DENNIS N.;BURNS QUINTIN S. 发明人 BROMLEY DENNIS N.;BURNS QUINTIN S.
分类号 H04L29/06 主分类号 H04L29/06
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