To solve a problem in which, even when functional encryption technology is used for an in-vehicle recording device, it is necessary to set a data user for which reading is permitted by the owner of a vehicle each time in a case in which the data user for which reading is allowed changes depending on the regulation of a country or region where the user drives.SOLUTION: An in-vehicle recording device receives data to be stored including personal information from a plurality of electronic control devices connected to an in-vehicle bus, refers to an encryption policy consisting of a plurality of correspondence tables that associate a data user condition that can read the data to be stored by a correspondence table selection unit with the data to be stored, selects a correspondence table on the basis of various situations when the vehicle is running, and generates a ciphertext containing the condition described in the correspondence table using functional encryption.SELECTED DRAWING: Figure 1

    【課題】走行する国、あるいは地域の法規によって、読み出しを許可するデータ利用者が変化する場合、車載記録装置に関数型暗号技術を利用しても、自動車の所有者が読み出しを許可するデータ利用者を、その都度、設定する必要がある。【解決手段】車載記録装置を、車載バスに接続された複数の電子制御装置から、個人情報を含む保存対象データを受信し、対応表選択部により保存対象データを読み出すことができるデータ利用者の条件と保存対象データを対応付けた複数の対応表からなる暗号化ポリシーを参照し、車両の走行時の種々の状況に基づき対応表を選択し、この対応表に記載の条件を含む暗号文を、関数型暗号を用いて生成するようにした。【選択図】図1


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    Title :

    IN-VEHICLE RECORDING DEVICE AND INFORMATION RECORDING METHOD


    Additional title:

    車載記録装置および情報記録方法


    Contributors:

    Publication date :

    2021-07-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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