Adjustable free-running secure clock

H - Electricity – 04 – L

Patent

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Details

H04L 9/32 (2006.01)

Patent

CA 2567573

A free-running secure clock in a computing device that is adjustable by a user of the device so long as cumulative adjustments do not exceed a predicted clock drift. The clock may be initially set by the user or by a trusted time authority or the like. Such a clock may be required in a trust-based system that measures a temporal requirement against the clock.

La présente invention concerne une horloge sécurisée à fonctionnement libre dans un dispositif informatique, laquelle horloge peut être réglée par un utilisateur du dispositif pour autant que les réglages successifs ne dépassent pas la dérive de l'horloge prévue. L'horloge peut être réglée au départ par l'utilisateur ou par une autorité de pointage fiable. Une telle horloge peut être utilisée dans un système basé sur la confiance qui mesure une exigence temporelle en fonction de l'horloge.

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