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IN-VEHICLE NETWORK SYSTEM, ELECTRONIC CONTROL UNIT, AND UPDATE PROCESSING METHOD

  • US 20160264071A1
  • Filed: 05/24/2016
  • Published: 09/15/2016
  • Est. Priority Date: 05/08/2014
  • Status: Active Grant
First Claim
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1. A method for use in an in-vehicle network system including a plurality of electronic control units that each communicate a data frame having a message authentication code (MAC) added thereto with one another via at least one bus in accordance with Controller Area Network (CAN) protocol, the method comprising:

  • detecting a state of a vehicle having the in-vehicle network system mounted therein; and

    updating a MAC key used to generate the message authentication code under the condition that the detected state of the vehicle is a predetermined state.

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