Secret communication apparatus

Details Secret communication apparatus Secret communication apparatus

1992-07-13

1993-08-24

Cain, David

Cryptography

Cryptanalysis

380 52, 310 71, 439189, 3642408, G11B 100

Patent

active

052395812

ABSTRACT:
This secret communication apparatus used in an audio and data transmission system has scramble/descramble circuits formed of programmable logic means. A control circuit in the apparatus instructs the programmable logic means to alter the arrangement of scramble/descramble circuits in accordance with the control signal received from the partner of communication. The control circuit in the partner's apparatus also instructs its programmable logic means to alter the arrangement of scramble/descramble circuits.

REFERENCES:
patent: 4972470 (1990-11-01), Farago

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