To provide an update management method for letting an external tool to update common keys etc., in all ECUs while reducing a risk of illegal rewriting of all the ECUs.SOLUTION: An update management method comprises: performing verification using a certificate of an external device; determining, when the verification by the certificate is successful and the latest message indicative of update of firmware of a plurality of electronic control units other than an update management device is received from the external device, whether or not a transmission of the update message is within a range of an authority of the external device; and transferring the update message to a network (i) when it is determined that the transmission of the update message by the external device is within the range of the authority of the external device, or stopping the transfer (ii) when it is determined that the transmission of the update message by the external device is not within the range of the authority of the external device.SELECTED DRAWING: Figure 12

    【課題】全てのECUが不正に書き換えられるリスクを低減して、外部ツールにECU内の共有鍵等を更新させるための更新管理方法を提供する。【解決手段】更新管理方法は、外部装置の証明書を用いた検証を行い、証明書の検証が成功し、かつ、外部装置から、更新管理装置以外の複数の電子制御ユニットのファームウェアの更新を指示する更新メッセージを受信した場合に、外部装置による更新メッセージの送信が外部装置の権限範囲内であるか否かの判定を行い、(i)外部装置による更新メッセージの送信が外部装置の権限範囲内であると判定したときには、更新メッセージをネットワークに転送し、(ii)外部装置による更新メッセージの送信が外部装置の権限範囲内でないと判定したときには、転送を抑止する。【選択図】図12


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    Title :

    UPDATE MANAGEMENT METHOD, UPDATE MANAGEMENT DEVICE AND CONTROL PROGRAM


    Additional title:

    更新管理方法、更新管理装置及び制御プログラム


    Contributors:
    HAGA TOMOYUKI (author) / MATSUSHIMA HIDEKI (author) / MAEDA MANABU (author) / KAIJO YUJI (author) / ANZAI JUN (author)

    Publication date :

    2021-05-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / 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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