Method for encryption sync compression in an encrypted radio tel

Details Method for encryption sync compression in an encrypted radio tel Method for encryption sync compression in an encrypted radio tel

1993-05-07

1994-11-01

Buczinski, Stephen C.

Cryptography

Key management

Having particular key generator

370109, 379 58, 379 62, 379 93, 380 28, 380 33, 380 49, H04L 902, H04J 306, H04M 1100

Patent

active

053613023

ABSTRACT:
A method for transparently coupling an encrypted two-way RF communication unit (100) with an encrypted landline communication unit (104). An RF message comprised of a plurality of data frames (401,402, 403) is transmitted from the RF communication unit (100), wherein a plurality of the data frames include encrypted voice information (403). Some bits from the data frames (501,502) are selectively removed, without removing the encrypted voice information (503), to form reduced bit data frames, and the reduced bit data frames are transmitted via the landline to the landline communication unit (104).

REFERENCES:
patent: 4815128 (1989-03-01), Malek
patent: 4817146 (1989-03-01), Szczutkowski et al.
patent: 4893308 (1990-01-01), Wilson et al.
patent: 4893339 (1990-01-01), Bright et al.
patent: 5093829 (1992-03-01), Maher

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