System and method for retrieving certificates associated...

H - Electricity – 04 – L

Patent

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H04L 9/32 (2006.01) H04L 12/54 (2006.01)

Patent

CA 2524607

A system and method for retrieving certificates and/or verifying the revocation status of certificates. In one embodiment, when a user opens a digitally signed message, a certificate that is required to verify the digital signature on the message may be automatically retrieved if it is not stored on the user's computing device (e.g. a mobile device), eliminating the need for users to initiate the task manually. Verification of the digital signature may also be automatically performed by the application after the certificate is retrieved. Verification of the revocation status of a certificate may also be automatically performed if it is determined that the time that has elapsed since the status was last updated exceeds a pre-specified limit.

Il s'agit d'un système et d'une méthode qui permettent de récupérer et/ou de vérifier l'état de révocation de certificats. Dans une version, lorsqu'un utilisateur ouvre un message à signature numérique, un certificat nécessaire pour vérifier la signature numérique du message peut être automatiquement récupéré, s'il n'est pas archivé sur le dispositif de calcul de l'utilisateur (p. ex. un appareil mobile), ce qui évite à ce dernier d'amorcer manuellement la tâche. La vérification de la signature numérique peut être aussi automatiquement effectuée par l'application, une fois le certificat récupéré. La vérification de l'état de révocation d'un certificat peut être aussi automatiquement effectuée, s'il est déterminé que le temps écoulé depuis la dernière mis à jour de l'état dépasse une limite préétablie.

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