To prevent a vehicle door from being unlocked illicitly with radio wave relays even when a portable machine is away from a vehicle.SOLUTION: When a user of a vehicle gets off the vehicle together with a portable machine, the portable machine obtains a relative position referencing the position of getting off and an approaching speed with respect to the vehicle. When an authentication request is made from an unlocking control device for a vehicle mounted on the vehicle, the portable machine returns an approaching speed in addition to authentication information. When the portable machine is authenticated as a genuine portable machine on the basis of the authentication information and the approaching speed of the portable machine meets predetermined speed conditions, the unlocking control device for the vehicle sets a vehicle door in an unlockable state. If a relay attack occurs, the portable machine is authenticated as a genuine portable machine. However, the approaching speed does not meet the predetermined speed conditions. Therefore, it is possible to avoid a case where the door is unlocked by the relay attack.SELECTED DRAWING: Figure 3

    【課題】車両から携帯機が離れているにも拘わらず電波中継器を用いて車両の扉が不正に解錠されてしまうことを防止する。【解決手段】車両の使用者が携帯機を携帯した状態で車両から降車すると、携帯機は、その位置を基準とする相対位置と、車両に対する接近速度とを取得する。車両に搭載された車両用解錠制御装置からの認証要求があった場合には、認証情報に加えて接近速度も返信する。車両用解錠制御装置では、認証情報に基づいて携帯機が正規の携帯機であると認証されて、且つ、携帯機の接近速度が所定の速度条件を満足した場合に、車両の扉を解錠可能な状態に設定する。リレーアタックされると、携帯機が正規の携帯機であると認証されてしまうが、接近速度は所定の速度条件を満足しないので、リレーアタックによって扉が解錠されてしまう事態を回避可能となる。【選択図】図3


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    Title :

    UNLOCKING CONTROL SYSTEM FOR VEHICLE, UNLOCKING CONTROL DEVICE FOR VEHICLE, PORTABLE MACHINE, AND UNLOCKING CONTROL METHOD FOR VEHICLE


    Additional title:

    車両用解錠制御システム、車両用解錠制御装置、携帯機、車両用解錠制御方法


    Contributors:

    Publication date :

    2019-10-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E05B LOCKS , Schlösser / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04Q Wähltechnik , SELECTING



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