Title:
IN-VEHICLE DEVICE, ENCRYPTED COMMUNICATION METHOD, AND ENCRYPTED COMMUNICATION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/085243
Kind Code:
A1
Abstract:
An in-vehicle device according to the present invention is mounted in a vehicle, said device comprising: a processing unit which, in accordance with a first method, generates first key derivation information, generates first key information by using the first key derivation information, and encrypts a packet by using the first key information; and a communication unit which transmits the packet encrypted by the processing unit to another vehicle, wherein the processing unit, after encrypting the packet by using the first key information and in accordance with a second method which has a shorter key information generation time than the first method, generates second key derivation information, generates second key information by using the second key derivation information, and encrypts a packet to be newly transmitted by the communication unit by using the second key information instead of the first key information.
Inventors:
INABA TATSUSHIGE (JP)
HATA YOICHI (JP)
HATA YOICHI (JP)
Application Number:
PCT/JP2021/025351
Publication Date:
April 28, 2022
Filing Date:
July 05, 2021
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
H04L9/08; G06F21/60; G06F21/64; H04L9/32
Domestic Patent References:
| WO2012008158A1 | 2012-01-19 |
Foreign References:
| JP2003110540A | 2003-04-11 | |||
| JP2011087249A | 2011-04-28 | |||
| JP2009064178A | 2009-03-26 | |||
| JP2020017805A | 2020-01-30 |
Attorney, Agent or Firm:
ONEDEE IP PARTNERS (JP)
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