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Title:
COMMUNICATION NETWORK SYSTEM AND MESSAGE INSPECTION METHOD
Document Type and Number:
Japanese Patent JP2018026822
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a communication network system and a message inspection method for improving message inspection performance in a communication network system connected with a transmission node and a reception node.SOLUTION: In a transmission node, a MAC generation unit generates a first MAC based on transmission data, transmission counter value and confidential information, a transmission unit transmits a message having the transmission data and an extraction value extracted from an extraction place specified by the transmission counter value, out of the first MAC. In a reception node, a MAC inspection unit generates a second MAC based on the reception data acquired from the received message, the reception counter value and the confidential information, inspects whether an inspection value acquired from the extraction place out of the second MAC, and an inspection value acquired from the received message match, and if the inspection results do not match, acquires an inspection value from the second MAC, while changing the acquisition place for acquiring an inspection value from the second MAC, and re-inspects whether or not the inspection value matches the extraction value.SELECTED DRAWING: Figure 2

Inventors:
TAKEMORI KEISUKE
KAWABATA HIDEAKI
Application Number:
JP2017159689A
Publication Date:
February 15, 2018
Filing Date:
August 22, 2017
Export Citation:
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Assignee:
KDDI CORP
International Classes:
H04L9/32; B60R16/023; G09C1/00; H04L12/28
Domestic Patent References:
JP2005167942A2005-06-23
JP2010011400A2010-01-14
JP2011521548A2011-07-21
Foreign References:
WO2013128317A12013-09-06
Other References:
DAVIES, D. W. AND PRICE, W. L., ネットワーク・セキュリティ, JPN6017015451, 5 December 1985 (1985-12-05), pages 114 - 116, ISSN: 0003779960
NILSSON, D.K., LARSON, U.E. AND JONSSON, E.: "Efficient In-Vehicle Delayed Data Authentication Based on Compound Message Authentication Codes", IEEE 68TH VEHICULAR TECHNOLOGY CONFERENCE, 2008, JPN6017015454, 2008, pages 1 - 5, XP055234774, ISSN: 0003779961, DOI: 10.1109/VETECF.2008.259
LIN, C.-W. AND SANGIOVANNI-VINCENTELLI, A.: "Cyber-Security for the Controller Area Network (CAN) Communication Protocol", 2012 INTERNATIONAL CONFERENCE ON CYBER SECURITY, vol. p.1-7, JPN6017015453, 2012, ISSN: 0003779962
竹森敬祐 他: "セキュアブート+認証による車載制御システムの保護", 電子情報通信学会技術研究報告, vol. 第114巻 第225号, JPN6017015456, 12 September 2014 (2014-09-12), pages 47 - 52, ISSN: 0003779963
Attorney, Agent or Firm:
Field Saki Satoshi
Junichi Kobayashi
Hiroyuki Matsumoto