The invention discloses a security authentication method for preventing relay attacks of an automobile, and belongs to the technical field of automobile keyless functions. The method comprises the steps that when a vehicle receives a key pressing signal of a key, a key ID and a key rolling code in the key pressing signal are authenticated, and the carrier frequency and the time interval of the key pressing signal are verified; and when the vehicle receives the positioning signal of the key, the key ID in the positioning signal of the key is authenticated, and the time interval and the field intensity position information of key reply in the received positioning signal of the key are verified. According to the method and the device, the relay attack can be authenticated more safely under the condition that the operation processes of keyless entry and keyless vehicle starting are not influenced, and the vehicle safety is ensured.

    本发明公开了一种汽车防止中继攻击的安全认证方法,属于汽车无钥匙功能技术领域。所述方法包括:当车辆接收到的是钥匙的按键信号时,认证钥匙按键信号中的钥匙ID和钥匙滚动码,以及对钥匙按键信号的载波频率与时间间隔进行校验;当车辆接收到的是钥匙的定位信号时,认证钥匙定位信号中的钥匙ID,以及对接收到的钥匙定位信号中的钥匙回复的时间间隔和场强位置信息进行校验。本发明实现了在不影响无钥匙进入、无钥匙启动车辆的操作流程下针对中继攻击的更加安全地认证,保证了车辆安全。


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    Title :

    Security authentication method for preventing relay attack of automobile


    Additional title:

    一种汽车防止中继攻击的安全认证方法


    Contributors:
    CHEN ZEJIAN (author) / FENG XIAOXING (author) / YU QIAN (author)

    Publication date :

    2024-04-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze



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