Communication system message authentication

Details Communication system message authentication Communication system message authentication

1991-03-26

1993-08-24

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

455 542, 455 63, 379 63, H04B 700, H04M 1100

Patent

active

052396800

ABSTRACT:
Authentication of system status OSWs in a trunked communication system is provided by first verifying (411) that a received system ID (313) matches a pre-programmed system ID. A system status OSW must then be matched twice before the information in the system status OSW is programmed into a communication unit (115), thus limiting the possibility of false decoding of system status OSWs.

REFERENCES:
patent: 4312074 (1982-01-01), Pautler et al.
patent: 4541095 (1985-09-01), Vries
patent: 4654481 (1987-03-01), Corris et al.
patent: 4670905 (1987-06-01), Sandvos et al.
patent: 4692945 (1987-09-01), Zaunek
patent: 4723264 (1988-02-01), Sasuta et al.
patent: 4876738 (1989-10-01), Selby
patent: 4910510 (1990-05-01), Davis et al.

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