Encryption device and device for decrypting informations...

H - Electricity – 04 – L

Patent

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H04L 12/56 (2006.01) H04B 10/20 (2006.01) H04L 9/08 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2193249

his encryption device is usable to encrypt information conveyed by cells sent from an optical addressing node (OAN) to network terminations (ONU1, ..., ONU4) through a passive optical network (APON), each cell (CL1) carrying at least one information unit (U1, U2, U3), and each information unit being intended for a particular subscriber's terminal. It includes encryption mechanisms with facilities (KM, CDC) for receiving in cleartext at least one key (Ki), from at least one decryption device (DD) located at a network termination. Applicable to ATM telecommunication networks.

Ce dispositif de chiffrement est utilisable pour chiffrer des unités d'informations transportées par des cellules qui sont diffusées d'un noeud de diffusion optique (OAN) vers des terminaisons de réseau (ONU1, ..., ONU4) au moyen d'un réseau optique passif (APON), chaque cellule (CL1) transportant au moins une unité d'information (U1, U2, U3), et chaque unité d'information étant destinée respectivement à un terminal d'abonné. Il comporte des moyens de chiffrement qui comportent des moyens (KM, CDC) pour recevoir en clair au moins une clé (Ki), en provenance d'au moins un dispositif de déchiffrement (DD) situé dans une terminaison de réseau. Application aux réseaux de télécommunication ATM.

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