Method for transmitting management messages by a management...

H - Electricity – 04 – N

Patent

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Details

H04N 21/647 (2011.01) H04N 21/435 (2011.01) H04N 21/4623 (2011.01)

Patent

CA 2583977

The invention concerns a method for transmitting management messages by a management center (CG) addressed to a plurality of multimedia units. Each unit is equipped with a security module (SC) comprising at least one global encryption key used in relation with an encryption module. Said method is characterized in that it consists in dividing the set of security modules providing access to encrypted data from a specific supplier at least into two groups, a first group (GR1) of security modules provided with a first configuration of security elements and a second group of security modules (GR2) provided with a second configuration of security elements, the first configuration being different from the second configuration.

La présente invention concerne une méthode de transmission de messages de gestion par un centre de gestion (CG) à destination d'une pluralité d'unités multimédia. Chaque unité dispose d'un module de sécurité (SC) comprenant au moins une clé globale de chiffrement utilisée en relation avec un module de chiffrement. Cette méthode est caractérisée en ce qu'elle consiste à diviser l'ensemble des modules de sécurité permettant l'accès à des données chiffrées provenant d'un fournisseur déterminé au moins en deux groupes, un premier groupe (GR1) de module de sécurité disposant d'une première configuration des éléments de sécurité et un second groupe (GR2) de modules de sécurité disposant d'une seconde configuration des éléments de sécurité, la première configuration étant différente de la seconde configuration.

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