Patent ID: 7920703

Claim:
A descrambler integrated circuit comprising: a local memory to store a unique key; a first process block, using the unique key, to perform at least two successive cryptographic operations on a first mating key generator in order to produce a first key; a second process block, using the first key, to perform at least two successive cryptographic operations on a second mating key generator in order to produce a second key; a third process block, using the first key and the second key, to decrypt a first encrypted descrambling key to recover a first descrambling key; a fourth process block, using the first key and the second key, to decrypt a second encrypted descrambling key to recover a second descrambling key; and a descrambler to descramble the scrambled digital content using both the first descrambling key and the second descrambling key in order to produce digital content in a clear format.