Method of software distribution protection

Details Method of software distribution protection Method of software distribution protection

1993-07-27

1994-08-09

Gregory, Bernarr E.

Cryptography

Cryptanalysis

380 21, 380 23, 380 25, 380 49, 34082531, 34082534, H04L 900, H04L 908

Patent

active

053373570

ABSTRACT:
A method is provided for protecting distributed software which relies on a unique factor such as an accessible serial number or the generation of a profile or fingerprint of the computer of the user which is entered individually and/or with a random factor to generate a unique first key which will differ for different computers. The first key is sent to a processing center which then generates a second key. The user applies the second key which compares the unique and/or random factors. If the comparison matches, the first and second keys are used in an algorithm in the software to generate a decrypting key permitting the customer to purchase the selected program(s).

REFERENCES:
patent: 4649233 (1987-03-01), Bass et al.
patent: 5056140 (1991-10-01), Kimbell
patent: 5144667 (1992-09-01), Pogue, Jr. et al.

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