Secret communication apparatus

Details Secret communication apparatus Secret communication apparatus

H - Electricity

04

L

H04L 9/12 (2006.01) H04K 1/06 (2006.01) H04L 9/18 (2006.01)

Patent

CA 2073784

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.

'invention est un appareil de communication protégé utilisé dans un système de transmission de données et de signaux audio; il est doté de circuits de brouillage et de débrouillage constituant un dispositif logique programmable. Un circuit de commande incorporé à l'appareil demande au dispositif logique programmable de modifier la configuration des circuits de brouillage et de débrouillage selon les spécifications du signal de commande reçu de l'autre interlocuteur. Le circuit de commande de l'appareil de cet autre interlocuteur demande également à son dispositif logique programmable de modifier la configuration de ses circuits de brouillage et de débrouillage.

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