@inproceedings{oai:ipsj.ixsq.nii.ac.jp:00078001,
 author = {畑, 正人 and 田邉, 正人 and 吉岡, 克成 and 大石, 和臣 and 松本, 勉 and Hata, Masato and Masato, Tanabe and Katsunari, Yoshioka and Kazuomi, Oishi and Tsutomu, Matsumoto},
 book = {コンピュータセキュリティシンポジウム2011 論文集},
 issue = {3},
 month = {Oct},
 note = {現代の自動車は,CAN(Controller Area Network)に代表される車載ネットワークを導入している.しかし,CANプロトコルには暗号化や認証などのセキュリティ機能がなく,盗聴やなりすましなどが容易にできてしまう可能性がある.本論文では,不正にCAN-IDが使用されることを検知し,挿入されたメッセージがバス上に流れきる前に破棄する“不正送信阻止方式”を提案する.この方式の特徴は,攻撃者からのメッセージの挿入を検知するだけでなく,送信自体を防ぐことができる点である.また,受信側ECUに変更を加える必要がなく,十分な即時応答性が見込まれるため,車載ネットワークへの導入が期待できる., Modern automobiles utilize in-vehicle networks such as CAN (Controller Area Network). CAN is designed for bus networks, in which transmitted message contains no source or destination information and thus are simply broadcasted to every node in the bus. The protocol has no support for sender authentication or message authentication and is therefore vulnerable to impersonation and spoofing. In this paper, we propose a prevention method for unauthorized message transmission in CAN. The method leverage the fact that every message is delivered to all nodes in the bus network including the one the spoofed message is trying to impersonate. This node detects the spoofed message just in time when it is being transmitted and immediately sends an error message to prevent its transmission. The method can be implemented with minimal changes in the present architecture of Electronic Control Unit (ECU) and can achieve sufficient real-time response. The method utilizes the general characteristics of CAN and therefore could be deployed to not only in-vehicle networks but also other systems that use CAN.},
 pages = {624--629},
 publisher = {情報処理学会},
 title = {不正送信阻止:CANではそれが可能である},
 volume = {2011},
 year = {2011}
}