Patent
1995-10-24
1997-05-06
Kriess, Kevin A.
G06F 1214
Patent
active
056280157
ABSTRACT:
The present invention provides a method for unlocking software programs which have been locked to a particular disk by the method described in U.S. Pat. No. 5,327,563. This unlocking method determines if a software program has been moved to a new location since it was originally written to a magnetic disk. In addition this method determines if the program has been executed more than a preset number of times and deciphers the software program if deciphering is authorized.
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Reinhard Posch, "Conceptual view of MS-DOS file system security" Dec. 1991.
Chavis John Q.
Hewlett--Packard Company
Kriess Kevin A.
LandOfFree
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