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DATA COMMUNICATION AUTHENTICATION SYSTEM FOR VEHICLE GATEWAY APPARATUS FOR VEHICLE DATA COMMUNICATION SYSTEM FOR VEHICLE AND DATA COMMUNICATION APPARATUS FOR VEHICLE

  • US 20140317729A1
  • Filed: 06/30/2014
  • Published: 10/23/2014
  • Est. Priority Date: 02/20/2012
  • Status: Active Grant
First Claim
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1. A vehicular data communication authentication system in which an external tool is connectable to a bus connected with electronic control units (ECUs) including an access target ECU, the vehicular data communication authentication system comprising:

  • an authentication device that performs authentication of the external tool connected to the bus;

    an authentication control device that;

    determines whether or not a result of the authentication of the external tool preformed by the authentication device is affirmative;

    when determining that the result of the authentication of the external tool is affirmative, sets an authenticated state and permits a data communication between the external tool and the access target ECU; and

    when determining that the result of the authentication of the external tool is not affirmative, does not set the authenticated state and prohibits the data communication between the external tool and the access target ECU; and

    an authentication maintain device that, after the authenticated state is set by the authentication control device, maintains the authenticated state within one of;

    a first period, which is a predetermined period of time elapsed since the authenticated state was set;

    a second period, which is a period during which an authenticated state maintain request is inputted to the authentication control device;

    a third period, which is a period during which a vehicle state satisfies a predetermined condition; and

    a fourth period, which is a period during which the bus is in a communicating state.

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