Method and apparatus for enabling trial period use of software p

Details Method and apparatus for enabling trial period use of software p Method and apparatus for enabling trial period use of software p

1994-04-25

1997-11-18

Gregory, Bernarr E.

Cryptography

Cryptanalysis

380 9, 380 23, 380 25, 380 49, 380 50, 34082531, 34082534, 395726, H04L 932, H04L 900

Patent

active

056895607

ABSTRACT:
A method and apparatus is provided for distributing software objects from a producer to a potential user. The software object is reversibly functionally limited, preferably through encryption, and loaded onto a computer-accessible memory media along with the file management program. The computer-accessible memory media is shipped from the producer to the potential user. The file management program is loaded into a user-controlled data processing system, and associated with the operating system for the user-controlled data processing system. The computer-accessible memory media is read with the user-controlled data processing system. The file management program is utilized to restrict access to the software object.

REFERENCES:
patent: 4888798 (1989-12-01), Earnest
patent: 5021997 (1991-06-01), Archie et al.
patent: 5155847 (1992-10-01), Kirouac et al.
patent: 5166886 (1992-11-01), Molnar et al.
patent: 5341429 (1994-08-01), Stringer et al.
"Data Masking Algorithm" (IBM Technical Disclosure Bulletin, vol. 32 No. 6B, Nov. 1989).
"Information Distribution via Rom Disks" (IBM Technical Disclosure Bulletin, vol. 33 No. 12, May 1991).

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