System and method of creating and sending broadcast and...

Details System and method of creating and sending broadcast and... System and method of creating and sending broadcast and...

H - Electricity

04

L

H04L 9/00 (2006.01) H04H 20/00 (2009.01)

Patent

CA 2690778

A method of encrypting broadcast and multicast data communicated between two or more parties, each party having knowledge of a shared key, is provided. The key is calculated using values, some of which are communicated between the parties, so that the shared key is not itself transferred. Avoiding the transfer of the key offers several advantages over existing encryption methods.

La présente invention concerne un procédé pour encrypter des données de diffusion et multidiffusion communiquées entre deux parties ou plus, chaque partie ayant connaissance d'une clé partagée. La clé est calculée en utilisant des valeurs, certaines d'entre elles étant communiquées entre les parties, de sorte que la clé partagée ne soit pas elle-même transférée. Le fait d'éviter le transfert de la clé présente plusieurs avantages comparativement aux procédés d'encryptage existants.

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