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ID-based control unit-key fob pairing

  • US 9,479,932 B2
  • Filed: 09/18/2015
  • Issued: 10/25/2016
  • Est. Priority Date: 07/17/2012
  • Status: Active Grant
First Claim
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1. A key fob, comprising:

  • a transceiver to receive and send signals;

    a memory to store a key fob identification (KFID); and

    a processor coupled to said transceiver and memory to;

    execute, along with a pairing device, an identification (ID) authenticated key agreement protocol based on the KFID to authenticate a pairing device and to generate a common secret encryption key known only by the processor and the pairing device;

    receive, from the pairing device, a control unit identification (CUID) encrypted by the pairing device with the common secret encryption key;

    execute along with the control unit associated with the CUID an ID authenticated key agreement protocol based on the CUID to authenticate the control unit and to generate a second common secret encryption key known only by the processor and the control unit; and

    receive, from the control unit, an operation key encrypted by the control unit with the second common secret encryption key.

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