Abstract: The present disclosure addresses an enhancement to a resource access decision facility, preferably a CORBA RAD, that allows additional query capabilities and faster resource access. Resource access decisions obtained from RAD are placed in a cache. An application can retrieve access decisions directly from the cache rather than requesting the decisions from RAD. If an access decision is not available in the cache, the access decision is requested from RAD. The preferred embodiments of the present disclosure allow the retrieval of lists of roles that have access to a particular resource and resources to which a particular role has access. The cache can be populated either prior to or during the mainstream execution of a program. In another embodiment, a backup version of the data in the cache can be stored in a storage medium external to the cache for near immediate restart after a crash or shutdown.

Abstract: A multimedia stream head end includes a legacy conditional access (CA) device that fully encrypts the stream using legacy keys. A copy of the stream is sent to a secondary CA device that encrypts only critical packets in the stream using secondary keys to render a partially encrypted stream. The critical packets in the fully encrypted stream from the legacy CA device are obtained and inserted next to the corresponding critical packets in the partially encrypted stream. Thus, only critical packets are encrypted, with encrypted versions being generated by both the legacy CA and secondary CA without the legacy CA knowing which of the packets that it encrypts are “critical”.