Apparatus and method for serializing and validating copies of computer software
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United States of America Patent
Stats
-
Feb 15, 1994
Grant Date -
N/A
app pub date -
Aug 31, 1992
filing date -
Aug 31, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus and method of disabling an unauthorized copy of a computer program. A set of numbers having an uncommon mathematical property is defined. For authorized copies, one of these numbers is written to a pre-determined location in the computer program. Whenever a copy of the computer program is attempted to be run, the computer system is instructed by the computer program to check the number at that pre-determined location. A determination is then made as to whether that number has the uncommon mathematical property. The computer program is disabled if its number at that location does not have the uncommon mathematical property.
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