Method and equipment for preventing relay attack

The embodiment of the invention provides a method and equipment for preventing a relay attack, and the method comprises the steps: building Bluetooth connection with second equipment, and enabling encryption; the encrypted first message is sent to the second device according to a preset sending rule corresponding to the first message, and the first message is used for indicating communication parameters of Bluetooth transmission and effective time of the communication parameters; sending the first message to the second device, so that the second device applies the communication parameter in the effective time according to the received first message; and applying the communication parameters at the effective time. The relay attack problem of Bluetooth connection can be effectively solved. 本申请实施例提供了一种防止中继攻击的方法和设备，该方法包括：与第二设备建立蓝牙连接，并启用加密；按照预设的对应第一报文的发送规则，向所述第二设备发送加密的所述第一报文，其中，所述第一报文用于指示蓝牙传输的通信参数，及所述通信参数的生效时间，以使得所述第二设备根据接收到的所述第一报文在所述生效时间应用所述通信参数；在所述生效时间应用所述通信参数。能够有效解决蓝牙连接的中继攻击问题。