Title:
DISTRIBUTION SYSTEM, KEY GENERATION DEVICE, IN-VEHICLE COMPUTER, DATA SECURITY DEVICE, DISTRIBUTION METHOD AND COMPUTER PROGRAM
Document Type and Number:
WIPO Patent Application WO/2018/100789
Kind Code:
A1
Abstract:
Provided is a distribution system comprising a key generation device and an in-vehicle computer mounted in a vehicle. The key generation device comprises: a key generation unit that uses a master key and a vehicle identifier of the vehicle to generate a first key; and a first key distribution unit that uses an initial common key of the vehicle to generate a first key update request message, and transmits the first key update request message to the in-vehicle computer. The in-vehicle computer comprises: an interface unit that transmits and receives data to and from a device external to the in-vehicle computer; a storage unit that stores the initial key; and a key update unit that uses the initial key and the first key update request message received from the key generation device to update the initial key to the first key, and uses the first key to generate a first update completion message. The first update completion message is transmitted to the key generation device by the interface unit, and the first key distribution unit verifies the received first update completion message on the basis of the first key.
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Inventors:
TAKEMORI KEISUKE (JP)
MIZOGUCHI SEIICHIRO (JP)
KUBOTA AYUMU (JP)
MIZOGUCHI SEIICHIRO (JP)
KUBOTA AYUMU (JP)
Application Number:
PCT/JP2017/025898
Publication Date:
June 07, 2018
Filing Date:
July 18, 2017
Export Citation:
Assignee:
KDDI CORP (JP)
International Classes:
H04L9/08; H04L9/16
Foreign References:
| JP2016163265A | 2016-09-05 | |||
| JP2013138320A | 2013-07-11 |
Other References:
KEISUKE TAKEEMORI: "In vehicle network security using secure elements: discussion of Security technologies", IEICE TECHNICAL REPORT, vol. 114, no. 508, 2 March 2015 (2015-03-02), pages 73 - 78, XP009508594
SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY, 19 January 2016 (2016-01-19), Kumamoto, Japan, pages 1 - 7
"Introduction to the Cryptographic Service Engine (CSE) module for SPC56ECxx and SPC564Bxx devices", AN4240 APPLICATION NOTE, REVISION 2, STMICROELECTRONICS, 17 September 2013 (2013-09-17), pages 1 - 30, XP055606099, Retrieved from the Internet [retrieved on 20171005]
SUGASHIMA, T. ET AL.: "Approaches for Secure and Efficient In-Vehicle Key Management", DENSO TECHNICAL REVIE, vol. 21, 30 November 2016 (2016-11-30), pages 140 - 149, XP055361448
2017 SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY, 24 January 2017 (2017-01-24), Naha, Japan, pages 1 - 7
SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY, 19 January 2016 (2016-01-19), Kumamoto, Japan, pages 1 - 7
"Introduction to the Cryptographic Service Engine (CSE) module for SPC56ECxx and SPC564Bxx devices", AN4240 APPLICATION NOTE, REVISION 2, STMICROELECTRONICS, 17 September 2013 (2013-09-17), pages 1 - 30, XP055606099, Retrieved from the Internet
SUGASHIMA, T. ET AL.: "Approaches for Secure and Efficient In-Vehicle Key Management", DENSO TECHNICAL REVIE, vol. 21, 30 November 2016 (2016-11-30), pages 140 - 149, XP055361448
2017 SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY, 24 January 2017 (2017-01-24), Naha, Japan, pages 1 - 7
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
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