System and method for preventing unauthorized use of...

Details System and method for preventing unauthorized use of... System and method for preventing unauthorized use of...

2005-03-22

2005-03-22

Elisca, Pierre E. (Department: 3621)

Data processing: financial, business practice, management, or co

Business processing using cryptography

Usage protection of distributed data files

C705S057000, C713S187000, C713S190000

Reexamination Certificate

active

06871192

ABSTRACT:
A method and system for protecting software from unauthorized use on a computer system using an external security device is disclosed. The method and system include encrypting the software to be protected using an encryption key. The use of the software on the computer system is then authorized by generating the encryption key within the security device using information supplied from the software. Once the encryption key generated by the security device is received on the computer system, the encryption key used to decrypt the encrypted software for execution on the computer system.

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patent: 5995623 (1999-11-01), Kawano et al.
patent: 6397333 (2002-05-01), Sohne et al.
patent: 63058538 (1988-03-01), None
Software copy-protection method using serial number of disk storage; Dec. 1995;IBM Disclosure Bulletin.

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