The invention provides a wireless device and a control method of the wireless device. The wireless device can detect relay attacks of pretending to be legal equipment by changing the phase of a received signal. The wireless device includes: a transmission unit that transmits a signal to another device; a receiving unit that receives a signal from the other device; and a difference calculation unit that calculates a first difference of a predetermined physical quantity per unit time of a signal of a predetermined frequency transmitted to the other device by the transmission unit, and calculates a second difference of the predetermined physical quantity per unit time of the signal of the predetermined frequency based on the signal received by the reception unit. Calculating a second difference of the predetermined physical quantity within a unit time of the signal of the predetermined frequency received by the other device; and a determination unit that compares the first difference with the second difference and performs a determination process for determining the validity of the signal received by the reception unit.
本发明提供一种能够检测使接收信号的相位变化而冒充合法设备的中继攻击的无线装置以及无线装置的控制方法。无线装置包括:发送部,向其他设备发送信号;接收部,从所述其他设备接收信号;差分计算部,求出所述发送部向所述其他设备发送的规定频率的信号的单位时间内的规定物理量的第一差分,并且基于所述接收部接收到的所述信号,计算所述其他设备接收到的所述规定频率的信号的单位时间内的所述规定物理量的第二差分;以及判定部,将所述第一差分与所述第二差分进行比较,进行判定所述接收部接收到的所述信号的合法性的判定处理。
Wireless device and wireless device control method
无线装置以及无线装置的控制方法
2024-07-02
Patent
Electronic Resource
Chinese
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