Security system communications including encryption

Details Security system communications including encryption Security system communications including encryption

H - Electricity

04

L

H04L 9/28 (2006.01)

Patent

CA 2564038

A security system (20) includes a plurality of sensors (22-26) that provide an indication of a security condition to a corresponding plurality of microcontrollers (32-36). Each microcontroller communicates information regarding the security condition to a central control (40). The communications from the microcontroller include using an elliptical public key encryption for protecting a key associated with the security condition information. In a disclosed example, the security condition information is encrypted using a symmetrical encryption technique.

La présente invention concerne un système de sécurité (20) qui comprend une pluralité de détecteurs (22-26) qui fournissent une indication d'un état de sécurité à une pluralité correspondante de microcontrôleurs (32-36). Chaque microcontrôleur communique des informations relatives à l'état de sécurité, à un dispositif de commande central (40). Les communications depuis le microcontrôleur, comprennent l'utilisation d'un cryptage à clé publique elliptique pour protéger une clé associée aux informations d'état de sécurité. Dans un exemple de l'invention, les informations d'état de sécurité sont cryptées au moyen d'une technique de cryptage symétrique.

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