An integrated circuit comprising: a first cryptographic block that may be iterated without limit to descramble received information using one of an internal key and a preprogrammed key to form one of a descrambled key and descrambled data; a key feedback path comprising a preprogrammed key register to store at least the preprogrammed key; an internal key register to store at least the descrambled key; and key selection logic to provide the one of the preprogrammed key and the internal key to the key input of the first cryptographic block ; and a second cryptographic block to descramble received scrambled digital content using a final descrambling key from the first cryptographic block to form descrambled digital content, wherein the received information includes a plurality of received inband scrambled keys and the key feedback path is configured with the key selection logic and the first cryptographic block on a first iteration, to provide the programmed key from the preprogrammed key register to the first cryptographic block to descramble a first received inband scrambled key, to store in the internal key register a descrambled key produced by descrambling the first received inband scrambled key by the first cryptographic block , to provide, by the key selection logic the descrambled key from the internal key register to the first cryptographic block to descramble a next of the received inband scrambled keys, to store in the internal key register a descrambled key produced by descrambling the next received inband scrambled key, and thereafter iteratively to descramble the next received inband scrambled key and to store the descrambled key from the first cryptographic block in the internal key register for the next iteration. a first cryptographic block that may be iterated without limit to descramble received information using one of an internal key and a preprogrammed key to form one of a descrambled key and descrambled data; a key feedback path comprising a preprogrammed key register to store at least the preprogrammed key; an internal key register to store at least the descrambled key; and key selection logic to provide the one of the preprogrammed key and the internal key to the key input of the first cryptographic block ; and a second cryptographic block to descramble received scrambled digital content using a final descrambling key from the first cryptographic block to form descrambled digital content, wherein the received information includes a plurality of received inband scrambled keys and the key feedback path is configured with the key selection logic and the first cryptographic block on a first iteration, to provide the programmed key from the preprogrammed key register to the first cryptographic block to descramble a first received inband scrambled key, to store in the internal key register a descrambled key produced by descrambling the first received inband scrambled key by the first cryptographic block , to provide, by the key selection logic the descrambled key from the internal key register to the first cryptographic block to descramble a next of the received inband scrambled keys, to store in the internal key register a descrambled key produced by descrambling the next received inband scrambled key, and thereafter iteratively to descramble the next received inband scrambled key and to store the descrambled key from the first cryptographic block in the internal key register for the next iteration. <EOS>