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Management device, vehicle, management method, and computer program

  • US 10,673,621 B2
  • Filed: 03/10/2016
  • Issued: 06/02/2020
  • Est. Priority Date: 03/26/2015
  • Status: Active Grant
First Claim
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1. A management device, comprising:

  • an initially-delivered key storage configured to store a plurality of initially-delivered keys serving as candidates of initially-delivered keys in connection with a plurality of onboard computers installed in a vehicle;

    a communication circuit configured to communicate with an onboard computer among the plurality of onboard computers installed in the vehicle to receive encrypted data from the onboard computer;

    verification logic configured to verify the encrypted data using an initially-delivered key among the plurality of initially-delivered keys stored on the initially-delivered key storage; and

    a wireless communication circuit configured to receive, from a management server equipment through a wireless communication network, a new initially-delivered key in connection with a new onboard computer newly installed in the vehicle,wherein the initially-delivered key storage stores the new initially-delivered key received by the wireless communication circuit, andwherein a management key utilized in updating a key used for an encrypted communication between the plurality of each onboard computer is updated via (i) through (v),(i) verifying whether the new initially-delivered key is stored in the new onboard computer,(ii) encrypting a latest management key using the new initially-delivered key,(iii) sending the encrypted latest management key to the new onboard computer,(iv) decrypting, by the new onboard computer, the encrypted latest management key using the new initially-delivered key, and(v) storing, by the new onboard computer, the latest management key.

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