according to the invention , a method for protecting digital television from unauthorized digital receivers within a population of digital receivers is disclosed . each digital receiver in the population has a unique identifier . in one step , provisioning information is received from a subset of the population of digital receivers indicating that the subset is potentially within range to receive digital television from a broadcaster . first decryption information is distributed to the subset of the population of digital receivers . the first decryption information allows for potentially decrypting a plurality of programs coextensively in time . the unauthorized digital receivers are cryptographically excluded from using the first decryption information . a first program is encrypted using a first method that is cryptographically related to second decryption information . the first program is sent . the second decryption information is distributed and cryptographically secured with the first decryption information .