×

MANAGEMENT SYSTEM, KEY GENERATION DEVICE, IN-VEHICLE COMPUTER, MANAGEMENT METHOD, AND COMPUTER PROGRAM

  • US 20190199524A1
  • Filed: 03/28/2017
  • Published: 06/27/2019
  • Est. Priority Date: 08/09/2016
  • Status: Active Grant
First Claim
Patent Images

1. A management system comprising:

  • a key generation device; and

    an in-vehicle computer which is installed in a vehicle,wherein the key generation device includesa vehicle interface configured to transmit and receive data to and from the vehicle,a key generation unit configured to generate a first key and a second key which are stored in the in-vehicle computer,an cryptographic processing unit configured to encrypt the first key with an initial key which is stored in advance in the in-vehicle computer to generate first encrypted data, and encrypts the second key with the first key to generate second encrypted data,an expected value calculation unit configured to calculate an expected value of stored data which is stored in advance in the in-vehicle computer using the second key, anda verification unit configured to verify a measured value received from the vehicle through the vehicle interface on the basis of the expected value,wherein the first encrypted data and the second encrypted data are transmitted to the vehicle through the vehicle interface, andwherein the in-vehicle computer includesan interface unit configure to transmit and receive data to and from a device outside of the in-vehicle computer,an cryptographic processing unit configured to decrypt the first encrypted data received from the key generation device through the interface unit with the initial key which is stored in advance in the in-vehicle computer to acquire the first key, and decrypt the second encrypted data received from the key generation device through the interface unit with the acquired first key to acquire the second key, anda measured value calculation unit configure to calculate the measured value of the stored data which is stored in advance in the in-vehicle computer using the acquired second key,wherein the measured value is transmitted to the key generation device through the interface unit.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×