System for transmitting subscription information and content...

H - Electricity – 04 – L

Patent

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Details

H04L 29/06 (2006.01) G06F 1/32 (2006.01) G06F 17/21 (2006.01) G06F 17/22 (2006.01) H04L 12/28 (2006.01) H04L 12/56 (2006.01) H04L 29/12 (2006.01) H04M 1/725 (2006.01) H04Q 7/14 (2006.01) H04L 29/08 (2006.01) H04M 1/2745 (2006.01) H04Q 7/22 (2006.01) H04Q 7/32 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2314983

A system controls access to broadcast messages (298) received by a plurality of mobile devices (18). Selected mobile devices (18) are provided with a broadcast encryption key (BEK) (268). The broadcast messages (298) are encrypted using the BEK (268) prior to broadcasting so that the selected mobile devices (18) containing the BEK (268) can decrypt the broadcast messages (298). The broadcast messages (298) are then broadcast.

L'invention concerne un système qui permet de commander l'accès à des messages à diffusion générale (298) reçus par une pluralité de dispositifs mobiles (18). Des dispositifs mobiles (18) sélectionnés comportent une clé de cryptage de diffusion (BEK) (268). Les messages diffusés (298) sont cryptés à l'aide de la clé de cryptage (268) avant leur diffusion, de façon à pouvoir être décryptés par les dispositifs mobiles (18) sélectionnés contenant ladite clé (268). Puis les messages sont diffusés.

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