Method and apparatus for licensing computer programs using a DSA

Details Method and apparatus for licensing computer programs using a DSA Method and apparatus for licensing computer programs using a DSA

1997-11-19

2000-06-20

Trammell, James P.

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

Business processing using cryptography

Usage protection of distributed data files

380 21, 380 25, 380 23, 380 46, 380 4, G06F 1760

Patent

active

060789093

ABSTRACT:
A method and apparatus for using a Digital Signature Algorithm (DSA) for providing licensing of software. Three steps are required to allow setting up a license, issuing a license and for customer update of the license. An initialization step generates a public and private key pair. A license generation step follows the initialization step and involves feeding the private key and data for the license terms through the DSA to create a digital signature. The digital signature hash value is distributed to the customer as a valid license. The customer performs license verification by running the signature, public key and data for the license through the DSA on the customer's machine.

REFERENCES:
patent: 4908861 (1990-03-01), Brachtl et al.
patent: 5297208 (1994-03-01), Schlafly et al.
patent: 5414772 (1995-05-01), Naccache et al.
patent: 5438508 (1995-08-01), Wyman
patent: 5542086 (1996-07-01), Andrew et al.
patent: 5579222 (1996-11-01), Bains et al.
patent: 5579479 (1996-11-01), Plum
patent: 5625695 (1997-04-01), M'Raihi et al.
patent: 5634057 (1997-05-01), Dickinson
patent: 5812664 (1998-09-01), Bernobich et al.
Technical Disclosure Bulletin, vol. 36 No. 10 Oct. 1993, Asymmetric Authentication Protocol, pp. 413-415.

Affiliated with

Also associated with

Rating

Method and apparatus for licensing computer programs using a DSA does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for licensing computer programs using a DSA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for licensing computer programs using a DSA will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1862989