Title:
COMMUNICATION SYSTEM AND CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/209201
Kind Code:
A1
Abstract:
[Problem] To provide a communication system with which security can be improved. [Solution] Provided is a communication system comprising: a first device that transmits encrypted information that has been encrypted using a first cryptographic key; and a second device that executes a prescribed process on the basis of the encrypted information from the first device and a second cryptographic key, which is a cryptographic key common to the first cryptographic key. The first device comprises a first modification unit that modifies the first cryptographic key if a first condition is satisfied, and the second device comprises a second modification unit that modifies the second cryptographic key if a second condition common to the first condition is satisfied.
Inventors:
OHASHI YOSUKE (JP)
FURUTA MASATERU (JP)
FURUTA MASATERU (JP)
Application Number:
PCT/JP2020/015348
Publication Date:
October 15, 2020
Filing Date:
April 03, 2020
Export Citation:
Assignee:
TOKAI RIKA CO LTD (JP)
International Classes:
H04L9/16; B60R25/24; E05B49/00; H04L9/08
Foreign References:
JP2013048374A | 2013-03-07 | |||
JP2018145764A | 2018-09-20 | |||
JP2009278565A | 2009-11-26 | |||
JPH0736672A | 1995-02-07 |
Attorney, Agent or Firm:
ITO, Manabu et al. (JP)
Download PDF: