H - Electricity – 04 – L
Patent
H - Electricity
04
L
354/67
H04L 9/00 (2006.01) H04L 9/08 (2006.01) H04L 9/28 (2006.01)
Patent
CA 2037778
A descrambler for descrambling scrambled information signals through use of a predetermined decryption key includes processing means and a memory for storing data for use in said data processing routines. The processing means are adapted for processing data in accordance with a number of different data processing routines to descramble said scrambled information signals, including a routine for descrambling said scrambled information signals that utilizes said predetermined decryption key, and a routine for generating said predetermined decryption key. The processing means includes means for responding to an instruction for generating said predetermined decryption key by processing a first signal provided by the processing means with a second signal to generate said predetermined decryption key; and means for providing at least a portion of said second signal for processing with said first signal by retrieving a portion of said stored data from a portion of said memory identified by a dynamic pointer contained in said instruction for generating said decryption key, with said retrieved data being data that is also used in a said data processing routine other than said routine for generating said predetermined decryption key.
Anderson Steven Edward
Esserman James Neil
Griffin Roy Allen III
General Instrument Corporation
Smart & Biggar
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