Patent ID: 7797552

Claim:
A method of selectively configuring a receiver of a set of receivers to receive a media program encrypted according to a media encryption key and a conditional access module, comprising the steps of: receiving a media program in the receiver, the media program encrypted by either a media encryption key or a modified media encryption key; receiving the media encryption key in the receiver, the media encryption key including a first portion indicating a first state in which the media program is to be viewable by a set of receivers or a second state in which the media program is to be viewable only by a subset of the set of receivers; decrypting the media program in the receiver according to the media encryption key if the first portion indicates the first state; and modifying the media encryption key in the receiver according to a second key stored by only the subset of the set of receivers to produce a modified media encryption key and decrypting the media program according to the modified media encryption key if the first portion indicates the second state.