Title:
KEY MANAGEMENT SYSTEM, COMMUNICATION DEVICE, AND KEY SHARING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/189885
Kind Code:
A1
Abstract:
A key management system is configured such that: a key management apparatus (100) receives a key request including first device identification information and second device identification information, then generates a first encrypted shared key by encrypting a shared key by use of the first device identification information, further generates a second encrypted shared key by encrypting the shared key by use of the second device identification information, and then transmits a key response including the first encrypted shared key and the second encrypted shared key; a first device (500) receives the key response, then decrypts the first encrypted shared key into the shared key by use of the first device identification information, and further transmits the second encrypted shared key; and a second device (600) receives the second encrypted shared key and then decrypts the second encrypted shared key into the shared key by use of the second device identification information.
Inventors:
TANJI MASAMICHI (JP)
ITOI MAKOTO (JP)
KOBAYASHI NOBUHIRO (JP)
YAMAGUCHI TERUYOSHI (JP)
ITOI MAKOTO (JP)
KOBAYASHI NOBUHIRO (JP)
YAMAGUCHI TERUYOSHI (JP)
Application Number:
PCT/JP2017/015303
Publication Date:
October 18, 2018
Filing Date:
April 14, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04L9/32; H04L9/08
Domestic Patent References:
| WO2015001600A1 | 2015-01-08 |
Foreign References:
| JP2006157856A | 2006-06-15 | |||
| JP2013138304A | 2013-07-11 |
Other References:
OTWAY, D. ET AL.: "Efficient and timely mutual authentication", ACM SIGOPS OPERATING SYSTEMS REVIEW, vol. 21, no. 1, January 1987 (1987-01-01), pages 8 - 10, XP002008756
HIDEAKI KAWABATA ET AL.: "Shasai ECU Muke no Kagi Kanri Hoshiki", SCIS2016, 2016 SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY, 19 January 2016 (2016-01-19), Kumamoto, Japan, pages 1 - 7
HIDEAKI KAWABATA ET AL.: "Shasai ECU Muke no Kagi Kanri Hoshiki", SCIS2016, 2016 SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY, 19 January 2016 (2016-01-19), Kumamoto, Japan, pages 1 - 7
Attorney, Agent or Firm:
OIWA Masuo et al. (JP)
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