車載向け認証方式でのメッセージ長を削減するカウンタ同期手法とその評価

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2020/07/01

タイトル(英語): Message Length Oriented Counter Synchronization Method in Authentication System for Automotive Communication and its Evaluation

著者名: 西田　奏太（名城大学 大学院 理工学研究科），野崎　佑典（名城大学 理工学部），吉川　雅弥（名城大学 理工学部）

著者名(英語): Kanata Nishida (Graduate School of Science and Technology, Meijo University), Yusuke Nozaki (Faculty of Science and Technology, Meijo University), Masaya Yoshikawa (Faculty of Science and Technology, Meijo University)

キーワード: 車載セキュリティ，CAN，メッセージ認証，対策手法　　automotive security，CAN，message authentication，countermeasure

要約(英語): CAN is widely used as an in-vehicle network. However, since security of CAN protocol is not enough, various attacks on in-vehicle system have been reported. Therefore, as a countermeasure against the attacks, message authentication using a Message Authentication Code (MAC) has been proposed. In message authentication that also prevents replay attack, a counter is used for MAC generation. However, if the counters are out of synchronization between sender and receiver, subsequent messages cannot be authenticated. Therefore, a counter synchronization function is required to continue communication using message authentication. This study proposes a new counter synchronization method for message authentication in CAN communication. The proposed method synchronizes the counters using resynchronization message, which is based on a newly introduced synchronization counter. In order to reduce the communication traffic, the proposed method sends only the difference between the introduced counter and the counter for MAC generation. Experiments using mock-up system prove the validity of the proposed method.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.140 No.7 （2020） 特集：2019年電子・情報・システム部門大会

本誌掲載ページ: 826-834 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/140/7/140_826/_article/-char/ja/