Secure control of security mode

Details Secure control of security mode Secure control of security mode

H - Electricity

04

L

H04L 9/00 (2006.01) H04N 7/167 (2006.01)

Patent

CA 2373059

A system to change security levels is used to change the level of security used in a secured processing system. The system uses a status indicator to designate the security level being implemented. The security level can be upgraded to allow a higher level of security to be implemented with relative ease. However, in order to change from a higher level of security to a lower level of security, an authorization code is utilized to confirm that the change in security is authorized.

La présente invention concerne un système permettant de modifier les niveaux de sécurisation, utilisé pour modifier le niveau de sécurisation dans un système de traitement sécurisé. Ce système utilise un indicateur d'état permettant d'indiquer le niveau de sécurisation mis en oeuvre. On peut hausser le niveau de sécurisation de façon à permettre de mettre en oeuvre assez facilement un niveau de sécurisation plus élevé. Néanmoins, on utilise un code d'autorisation pour confirmer que la modification relative à la sécurisation est autorisée, lorsque l'on souhaite passer d'un niveau de sécurisation élevé à un niveau inférieur.

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