A system, apparatus, and method are directed towards allowing ingestion of encrypted content into such as a VOD server, or PVR, or the like by selectively encrypting portions of a content stream based on various selection rules. In one embodiment, the selection rules include leaving selected portions...http://www.google.de/patents/US20070160208?utm_source=gb-gplus-sharePatent US20070160208 - SELECTIVE AND PERSISTENT APPLICATION LEVEL ENCRYTION FOR VIDEO PROVIDED TO A CLIENT
