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Electronic key registration method and electronic key registration system

  • US 9,489,789 B2
  • Filed: 02/06/2014
  • Issued: 11/08/2016
  • Est. Priority Date: 02/15/2013
  • Status: Active Grant
First Claim
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1. A method for registering an electronic key to a controller of a vehicle, wherein the electronic key includes a unique electronic key ID and an encryption code associated with the electronic key ID and used for encrypted communication between the electronic key and the controller, the method comprising:

  • performing an area-limited registration in which the electronic key is registered within a limited area;

    wherein the area-limited registration includes;

    reading a SEED code and the electronic key ID from the electronic key and writing the electronic key ID to a memory of the controller;

    inserting the SEED code in an encryption code computation equation to generate the encryption code with the controller and writing the encryption code to the memory of the controller;

    deleting the SEED code from the electronic key after writing the encryption code to the memory;

    invalidating a function for the area-limited registration in the controller;

    assigning a unique vehicle ID to the vehicle; and

    associating the vehicle ID, a controller ID, which is unique to the controller, and the electronic key ID with one another in a database of a management center.

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