Systems and methods for protecting software from unlicensed copying and use
US5530752A · kind A · utility
129Cited by
6References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Feb 22, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are systems and methods for protecting a software program from unauthorized use and copying through the removal at least one of a plurality of instructions comprising a software program, and encrypting the removed instruction utilizing an encryption algorithm to produce an encrypted instruction, the encryption algorithm responsive to a randomly generated key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.