The invention provides a relay attack prevention method, a relay attack prevention system and a vehicle. The relay attack prevention method comprises the steps: obtaining the first signal intensity ofa wireless signal of a vehicle end and the second signal intensity of a wireless signal of a key end in real time after the wireless connection between the vehicle end and the key end is built; whenan unlocking or starting request is received, determining whether the first signal intensity and the second signal intensity are reasonable according to a preset rule, if yes, correspondingly controlling unlocking or starting, and if not, correspondingly stopping unlocking or starting. For a PEPS system, when a user walks close to the vehicle end with the key end and wants to unlock or control thevehicle to start, the wireless signal intensity at the vehicle end and the wireless signal intensity at the two ends of the key end have the characteristics of approximate intensity and trend. Therefore, the attack of a relay station can be effectively prevented by judging the rationality of the first signal strength of the vehicle end and the second signal strength of the key end.

    本发明提供一种防中继攻击方法、防中继攻击系统及车辆中,包括:在车辆端和钥匙端建立无线连接之后,实时获取所述车辆端的一无线信号的第一信号强度和所述钥匙端的所述无线信号的第二信号强度;当接收到解锁或启动请求时,根据预设规则判断所述第一信号强度和所述第二信号强度是否合理,若是,则相应控制解锁或启动,则否,则相应阻止解锁或启动。对于PEPS系统而言,当用户带着钥匙端走近车辆端希望解锁或控制车辆启动时,车辆端和钥匙端两端的无线信号强度具有强度和趋势近似的特征。因此,通过对车辆端的第一信号强度和钥匙端的第二信号强度的合理性的判断,可以有效阻止中继站的攻击。


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    Title :

    Relay attack prevention method, relay attack prevention system and vehicle


    Additional title:

    防中继攻击方法、防中继攻击系统及车辆


    Contributors:
    CHEN XIAOXIONG (author) / XIANG KANGTAI (author) / LUO YONG (author) / WANG YUZHU (author) / QIAO PEIHU (author)

    Publication date :

    2020-10-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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