Title:
COMMUNICATIONS SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/026360
Kind Code:
A1
Abstract:
The present invention provides a communication system. Provided is a reception node, wherein, when an ordinary message is received, a message verification unit (S230) executes verification using a message authentication code on the basis of the content of the ordinary message and a count value held by the node. When a result that denies the integrity of the message is obtained by the message verification unit, a resynchronization request unit (S280) issues a request to a transmission node for a counter to be resynchronized. When a synchronization message is received, count value update units (S290-S300, S240-S260) update the high-order count value of a receiving-side count value holding unit by a high-order count value indicated in the synchronization message.
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Inventors:
SUGASHIMA TAKESHI (JP)
Application Number:
PCT/JP2016/072876
Publication Date:
February 16, 2017
Filing Date:
August 04, 2016
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H04L9/32; G09C1/00
Foreign References:
| JP2005244986A | 2005-09-08 | |||
| JP2001156770A | 2001-06-08 |
Other References:
"Specification of Module Secure Onboard Communication, Release 4.2.2", AUTOSAR, 31 July 2015 (2015-07-31), pages 1 - 102, Retrieved from the Internet
MASASHI NAKANO: "Implementation evaluation of in-vehicle encrypted CAN communication and replay attack countermeasure technique", IPSJ SIG NOTES KUMIKOMI SYSTEM (EMB, 27 February 2015 (2015-02-27), pages 1 - 6
MASASHI NAKANO: "Implementation evaluation of in-vehicle encrypted CAN communication and replay attack countermeasure technique", IPSJ SIG NOTES KUMIKOMI SYSTEM (EMB, 27 February 2015 (2015-02-27), pages 1 - 6
Attorney, Agent or Firm:
JIN Shunji (JP)
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