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Threat mitigation in a vehicle-to-vehicle communication network

  • US 8,819,414 B2
  • Filed: 04/19/2010
  • Issued: 08/26/2014
  • Est. Priority Date: 04/19/2010
  • Status: Active Grant
First Claim
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1. A method of obtaining a certificate revocation list (CRL) for a vehicle in a vehicle-to-vehicle communication system, the method comprising the steps of:

  • providing a portable security unit to access secured operations for the vehicle, the portable security unit being relocatable from the vehicle;

    linking the portable security unit to a network device having access to a communication network, wherein the network device is remote from the vehicle, wherein the communication network is separate from the vehicle-to-vehicle communication system, and wherein the communication network is in communication with a certificate authority for issuing an updated CRL;

    downloading the updated CRL from the certificate authority to the portable security unit via the communication network;

    establishing a communication link between the portable security unit and a vehicle processor unit;

    exchanging mutual authentication between the portable security unit and the vehicle processing unit, wherein the updated CRL stored in the portable security unit is downloaded to a memory of the vehicle in response to a successful mutual authentication; and

    wherein establishing the link between the portable security unit and a vehicle processing unit is initiated by inserting an ignition key in a vehicle ignition.

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