Security enhancement in a data processor through use of dynamic parameter authentication
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United States of America Patent
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Sep 29, 1992
Grant Date -
N/A
app pub date -
Mar 13, 1990
filing date -
Mar 13, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A descrambler for descrambling scrambled information signals through use of a predetermined decryption key. 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 means 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.
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