Method and apparatus for voice encryption in a communications sy

Details Method and apparatus for voice encryption in a communications sy Method and apparatus for voice encryption in a communications sy

1994-01-21

1996-06-18

Buczinski, Stephen C.

Cryptography

Key management

Having particular key generator

375354, 375356, H04L 902, H04L 700

Patent

active

055286933

ABSTRACT:
A world-wide cellular radio telecommunications system utilizing low-earth orbit satellites provides secure transmissions of voice and data even though the length of the signal path of the communications link is dynamic. Crypto-algorithm generators at each end of a communications link are synchronized during a predetermined period of time after the initiation of communications. The crypto-algorithm generators are utilized to encrypt and decode, respectively, transmissions only after the expiration of the predetermined period of time.

REFERENCES:
patent: 4754482 (1988-06-01), Weiss
patent: 4856063 (1989-08-01), McCalmont
patent: 5003599 (1991-03-01), Landry
patent: 5278907 (1994-01-01), Snyder et al.
patent: 5363376 (1994-11-01), Chuang et al.

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