ID-BASED CONTROL UNIT-KEY FOB PAIRING

摘要

A method for pairing a key fob with a control unit is provided. The key fob executes an ID authenticated key agreement protocol with a pairing device based on a key fob identification to authenticate one another and to generate a first encryption key. The pairing device encrypts a control unit identification using the first encryption key. The key fob receives the encrypted control unit identification transmitted from the pairing device. The key fob then executes an ID authenticated key agreement protocol with the control unit based on the control unit identification to authenticate one another and to generate a second encryption key. The key fob then receives an operational key transmitted from the control unit that is encrypted with the second encryption key.

主权项

1. A key fob device comprising:
a transceiver that transmits and receives signals; memory that stores a first operational key corresponding to a control unit, the first operational key being encrypted by a first secret encryption key; and a processor communicatively coupled to the transceiver and memory that executes instructions stored in the memory to:
send a signal, using the transceiver, to initiate an operational key change operation;receive, using the transceiver, a second operational key encrypted using the first operational key; anduse the second operational key to transmit commands using the transceiver.