Trunked radio communication system having encrypted system contr

Details Trunked radio communication system having encrypted system contr Trunked radio communication system having encrypted system contr

1990-05-07

1991-10-01

Gregory, Bernarr E.

Cryptography

Key management

Having particular key generator

380 9, 380 37, 455 33, 455 54, 379 59, H04L 900

Patent

active

050540688

ABSTRACT:
A trunked communication system having a control resource that encrypts system control messages. In one embodiment, the encryption includes controlling a bit interleaving process (208, 311) as a function of an encryption key (203, 321). In another embodiment, the encryption process includes reordering (202, 302) the information bits that constitute the message itself. If both encryption processes are used, the controlling encryption key can either be the same for both processes, or different.

REFERENCES:
patent: 4882751 (1989-11-01), Kotzin et al.

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