Method for unlocking software files locked to a specific storage device
US5628015A · kind A · utility
27Cited by
16References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1995 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Oct 24, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2137
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.