A system and method is disclosed for providing DRM in a broadcast
environment. In accordance with the embodiment, a DRM system distributes
encrypted service keys over the mobile telephone network to a mobile
terminal. The mobile terminal receives the encrypted service key and uses
it to decrypt encrypted content keys received from a DVB set top box. The
decrypted content keys are sent to the set box over local link where they
are used to decrypt encrypted broadcast content. A power management
technique for mobile receivers is also disclosed that enables the
receiver hardware to power off during a portion of the rendering process.