Cryptography – Cryptanalysis
Patent
1991-04-09
1993-06-22
Gregory, Bernarr E.
Cryptography
Cryptanalysis
380 23, 380 25, 380 49, H04L 932
Patent
active
052221342
ABSTRACT:
A process and system for activating various programs are provided in a personal computer. The computer is initially provided with a registration shell. A data link is established between the personal computer and a registration computer. By providing the registration computer with various information, a potential licensee can register to utilize the program. Once the registration process is complete, a tamperproof overlay program is constructed at the registration computer and transferred to the personal computer. The tamperproof overlay includes critical portions of the main program, without which the main program would not operate and also contains licensee identification and license control data.
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Riddell Horace G.
Waite David P.
Gregory Bernarr E.
Tau Systems Corporation
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