Method and apparatus for providing secure communications for a r

Details Method and apparatus for providing secure communications for a r Method and apparatus for providing secure communications for a r

1994-06-16

1997-04-08

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 9, 380 49, H04L 900

Patent

active

056195729

ABSTRACT:
A secure communication system (100) that is capable of over-the-air-rekeying (OTAR) employs a key management controller (108) to provide secure communications for a requested call. The key management controller determines (403) when the requested call has been initiated and identifies (405) some of the plurality of radios as being members of the requested call. A call key is then transmitted (409) to the members of the requested call where it is used (514) for the duration of the requested call. In this manner, secure communications between the members of the requested call is provided.

REFERENCES:
patent: 4965804 (1990-10-01), Trbovich et al.
patent: 5093860 (1992-03-01), Steinbrenner et al.
patent: 5146497 (1992-09-01), Bright
patent: 5150408 (1992-09-01), Bright
patent: 5173938 (1992-12-01), Steinbrenner et al.
patent: 5325432 (1994-06-01), Gardeck et al.
patent: 5381479 (1995-01-01), Gardeck et al.

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