A method of operating a passive keyless entry (PKE) system of a vehicle can include generating and transmitting to a smart key, a first signal including a first random number and a first timestamp value, receiving from the smart key, a second signal including a second hash value and a second timestamp value, generating a third timestamp value, comparing a first difference between the second timestamp value and the first timestamp value with a first threshold for determining whether a relay signal has occurred, comparing a second difference between the third timestamp value and the second timestamp value with a second threshold for determining whether a relay signal and/or a replay signal has occurred, and comparing a first hash value based on the first timestamp value with the second hash value to determine whether to allow access to and start up of the vehicle.
APPARATUS AND METHOD FOR DISTINGUISHING RELAY/REPLAY SIGNAL IN PASSIVE KEYLESS ENTRY SYSTEM
VORRICHTUNG UND VERFAHREN ZUR UNTERSCHEIDUNG VON RELAIS-/WIEDERGABESIGNALEN IN EINEM PASSIVEN SCHLÜSSELLOSEN EINGANGSSYSTEM
APPAREIL ET PROCÉDÉ POUR DISTINGUER UN SIGNAL DE RELAIS/RÉEXÉCUTION DANS UN SYSTÈME D'ENTRÉE PASSIF SANS CLÉ
2025-05-07
Patent
Electronic Resource
English
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