Apparatus and method for a secure broadcast system

H - Electricity – 04 – L

Patent

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H04L 9/00 (2006.01)

Patent

CA 2531590

Apparatus and method for provisioning an access key used for a controlled access broadcast service is disclosed. In one aspect, a method for secure processing in a device (figure 4, unit 430) that securely stores a secret key (figure 4, Kc) comprises receiving a plurality of challenges from a network, generating a plurality of ciphering keys based on the secret key and the plurality of challenges, and generating an access key based on the plurality of ciphering keys.

La présente invention concerne un appareil et un procédé permettant de fournir une clé d'accès destinée un service de diffusion d'accès commandé. Dans un aspect, cette invention concerne un procédé de traitement sécurisé dans un dispositif qui stocke de manière sécurisée une clé secrète, ce procédé consistant à recevoir une pluralité de défis d'un réseau, à générer une pluralité de clés de chiffrage fondées sur cette clé secrète et cette pluralité de défis et, à générer une clé d'accès fondée sur la pluralité de clés de chiffrage.

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