Tamper-resistant method for authorizing access to data between a host and a predetermined number of attached workstations
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United States of America Patent
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-
Jul 10, 1990
Grant Date -
N/A
app pub date -
Feb 24, 1989
filing date -
Feb 24, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tamper-resistant method is disclosed for controlling the number of users given authorized access to licensed software in a host-based, multiple terminal system by use of an encrypted authorization list depth parameter. The method embedded in the host-licensed software can decrypt the depth parameter only using a key derived from its own CPU ID and an offset.
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