In addition to the generation of key-pairs, two main functions implemented with the system illustrated at FIG. 2 include: (i) securing or encoding, via a recording (or rebroadcast) engine [216], unsecured digital multimedia content [210] from a variety of A/V (audio/video) sources [208] such as analog TV/video input (conversion to MPEG is implied), MPEG inputs or other digital formats such as AVI