Invention Grant
US08353049B2 Separating keys and policy for consuming content 有权
分离用于消费内容的密钥和策略

Separating keys and policy for consuming content
Abstract:
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.
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