ID-BASED CONTROL UNIT-KEY FOB PAIRING
First Claim
Patent Images
1. A key fob-control unit pairing device, comprising:
- a transceiver to transmit and receive signals;
a memory to store a key fob identification (KFID) and a control unit identification (CUID); and
a processor coupled to said transceiver and memory and to;
authenticate the key fob using an identification (ID) authenticated key agreement protocol based on the KFID; and
transmit an encrypted CUID to the key fob.
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Abstract
A key fob-control unit pairing device that includes a transceiver to transmit and receive signals, a memory to store a key fob identification (KFID) and a control unit identification (CUID), and a processor coupled to said transceiver and memory. The processor is to authenticate the key fob using identification (ID) authenticated key agreement protocol based on the KFID, and to transmit an encrypted CUID to the key fob.
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Citations
20 Claims
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1. A key fob-control unit pairing device, comprising:
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a transceiver to transmit and receive signals; a memory to store a key fob identification (KFID) and a control unit identification (CUID); and a processor coupled to said transceiver and memory and to; authenticate the key fob using an identification (ID) authenticated key agreement protocol based on the KFID; and transmit an encrypted CUID to the key fob. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A key fob, comprising:
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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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for pairing a key fob with a vehicle, comprising:
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executing, by a pairing device and a key fob, an ID authenticated key agreement protocol based on a KFID to authenticate one another and to generate an encryption key DHKey1; encrypting, by the pairing device, a control unit identification (CUID) with DHKey1; transmitting, by the pairing device, the encrypted CUID to a key fob; executing, by the key fob and a control unit, an ID authenticated key agreement protocol based on the CUID to authenticate one another and to generate an encryption key DHKey2; encrypting, by the control unit, an operation key with DHKey2; and transmitting, by the control unit, the encrypted operation key to the key fob. - View Dependent Claims (18, 19, 20)
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Specification