PROBLEM TO BE SOLVED: To provide an on-vehicle relay device, an on-vehicle communication system, and a relay program that prevent an unauthorized message from being relayed between networks.SOLUTION: An on-vehicle relay device 10 having multiple communication units to which multiple CAN buses 2 and 3 are connected performs correctness determination of a message transmitted by ECU 20a-20f connected to the CAN buses 2 and 3. When a message is determined to be unauthorized, the on-vehicle relay device 10 notifies the CAN buses 2 and 3 connected to the communication unit having received the unauthorized message, of the transmission of the unauthorized message. The on-vehicle relay device 10 inhibits subsequent relay of messages having the same CAN-ID as the CAN-ID contained in the message determined to be unauthorized. At this point, the on-vehicle relay device 10 notifies a communication wire connected to communication units excluding the communication unit having received the message determined to be unauthorized, of the inhibited relay of the message.SELECTED DRAWING: Figure 1

    【課題】ネットワーク間で不正なメッセージが中継されることを防止し得る車載中継装置、車載通信システム及び中継プログラムを提供する。【解決手段】複数のCANバス2,3が接続される複数の通信部を有する車載中継装置10が、CANバス2,3に接続されたECU20a〜20fが送信したメッセージの正否判定を行う。メッセージが不正であると判定した場合、車載中継装置10はこのメッセージを受信した通信部に接続されたCANバス2,3に対して、不正なメッセージが送信された旨を通知する。車載中継装置10は、不正と判定したメッセージに含まれるCAN−IDと同じCAN−IDを有するメッセージについて、以後の中継を禁止する。このときに車載中継装置10は、不正と判定したメッセージを受信した通信部以外の通信部に接続された通信線に対して、メッセージの中継を禁止した旨を通知する。【選択図】図1


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    Title :

    ON-VEHICLE RELAY DEVICE, ON-VEHICLE COMMUNICATION SYSTEM, AND RELAY PROGRAM


    Additional title:

    車載中継装置、車載通信システム及び中継プログラム


    Contributors:

    Publication date :

    2017-01-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr



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