| 摘要 |
<p>A network component comprising a receiver configured to receive a signed content item and an associated security information from a publisher, wherein the security information indicates which group from a plurality of groups is allowed to access the signed content item, a storage unit configured to cache the content item and the associated security information, a processor to implement procedures to enforce security policies defined by the security information, and a transmitter configured to send the signed content item from the cache to a sub -scriber when the subscriber is a member of a group indicated by the security information as authorized to access the signed content item.</p> |
