Electronic keying scheme for locking data
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United States of America Patent
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-
Jul 24, 1990
Grant Date -
N/A
app pub date -
Feb 18, 1988
filing date -
Feb 18, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data locking system which modifies data in accordance with a renewable key variable derived from the exclusive ORing of a pseudorandom combination number from an external source means with an altered key variable.
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