US 5,745,569 A
Method for stega-cipher protection of computer codeGeneral
US 5,745,569 A
Method for stega-cipher protection of computer code
Tech Center:
3600 Transportation, Construction, Electronic Commerce, Agriculture, National Security and License and Review
Examiner:
Bernarr E. Gregory
Art Unit:
3642 Aeronautics, Agriculture, Fishing, Trapping, Vermin Destroying, Plant and Animal Husbandry, Weaponry, Nuclear Systems, and License and Review
Agent:
Inventors:
SCOTT A. MOSKOWITZ; MARC COOPERMAN
Assignee:
Priority:
01/17/96
Filed:
01/17/96
Granted:
04/28/98
Expiration:
01/17/16
Abstract
A method for protecting computer code copyrights by encoding the code into a data resource with a digital watermark. The digital watermark contains licensing information interwoven with essential code resources encoded into data resources. The result is that while an application program can be copied in an uninhibited manner, only the licensed user having the license code can access essential code resources to operate the program and any descendant copies bear the required license code.