A method, apparatus, and article of manufacture provide the ability to
process digital media content. A secret key (Ka) is obtained and
encrypted into an authorization key message (AKM) message. One or more
entitlement keys (Ke) are then obtained and encrypted using the secret
key (Ka) as an encryption key into an entitlement management message
(EMM). One or more media content encryption keys (Kc) are obtained and
encrypted using one or more of the entitlement keys (Ke) as encryption
keys into an entitlement control message (ECM). Digital media data
content (Dc) is then obtained and encrypted using the one or more media
content encryption keys (Kc). The AKM, EMM, ECM, and encrypted digital
media data content are then delivered to a set-top box that is configured
to provide digital media services with the content.