Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1996-05-20
1998-04-28
Barron, Jr., Gilberto
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
342 45, H04L 932, G01S 1374
Patent
active
057455759
ABSTRACT:
An Identification-Friend-or-Foe System Using Variable Codes (IFF System) lizes variable codes and pre-selected encryption/decryption technology to querry potential targets as to their battlefield affiliation and also to identify itself as a friend to a potential attacker. The IFF System performs a querry by sending a narrow laser beam to the potential target which is accompanied or closely followed by a radio frequency (RF) wave modulated with encrypted identification information. If the potential target is also equipped with the IFF System and in possession of the valid code, then the received RF wave can be decrypted to reveal the potential attacker as a friend. The potential target, then, encrypts its own identification information using the same code and transmits it via RF wave to the potential attacker. Thus fratricides may be avoided.
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patent: 4862176 (1989-08-01), Voles
patent: 4991209 (1991-02-01), Kolbert
patent: 5448052 (1995-09-01), Taylor et al.
patent: 5448643 (1995-09-01), Parker
patent: 5583507 (1996-12-01), D'Isepo et al.
Holloman Miles E.
Jordan Debbee J.
Otto, deceased William F.
Otto, heir Robert A.
Otto, heiress Lorinda R.
Barron Jr. Gilberto
Bush Freddie M.
Chang Hay Kyung
Nicholson Hugh P.
The United States of America as represented by the Secretary of
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