To obtain a vehicle authentication device that can prevent fraudulent activities such as relay attacks even in places where GPS reception is difficult.SOLUTION: A vehicle authentication device includes a transmission unit 23 that transmits an authentication request signal, a reception unit 24 that receives a response signal of a mobile device 3, a wireless LAN detection unit 25 that detects an SSID and signal strength of a wireless LAN, and an authentication unit that authenticates a mobile device, and the authentication unit determines both SSIDs match when an ID code of the mobile device matches an ID code to be authenticated, and an SSID included in the response signal and an SSID detected by the wireless LAN detection unit are the same, and a difference between the radio field strength included in the response signal corresponding to the same SSID and the detected radio wave strength are within a preset range, and authenticates the mobile device when the number of SSIDs determined to match is a predetermined ratio or more for the number of detected SSIDs.SELECTED DRAWING: Figure 1

    【課題】GPSの受信が困難な場所でもリレーアタックなどの不正行為を阻止することができる車両用認証装置を得ることを目的とする。【解決手段】認証要求信号を送信する送信部23と、携帯機器3の応答信号を受信する受信部24と、無線LANのSSIDおよび電波強度を検出する無線LAN検出部25と、携帯機器を認証する認証部とを備え、認証部は、携帯機器のIDコードが認証すべきIDコードと一致した場合であって、応答信号に含まれるSSIDと無線LAN検出部で検出されたSSIDとが同じでかつ同じSSIDに対応する応答信号に含まれ電波強度と検出された電波強度との差が予め設定された範囲内である場合に両者のSSIDとが一致すると判定し、一致すると判定したSSIDの数が検出されたSSIDの数に対して予め設定された割合以上である場合に携帯機器を認証する。【選択図】図1


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    Title :

    VEHICLE AUTHENTICATION DEVICE, AND VEHICLE AUTHENTICATION SYSTEM, AND VEHICLE AUTHENTICATION METHOD


    Additional title:

    車両用認証装置および車両用認証システム、並びに車両用認証方法


    Contributors:

    Publication date :

    2020-12-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / E05B LOCKS , Schlösser





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