AT+BLEENC diffrence between SEC_ENCRYPT and SEC_ENCRYPT_NO_MITM

[staibiii]

Hello everybody,

I don't understand the diffrence between SEC_ENCRYPT and SEC_ENCRYPT_NO_MITM. Can somebody please explane it to me?

[ESP_Sun]

Hi, you can take a look at the explanation of SEC_ENCRYPT and SEC_ENCRYPT_NO_MITM in this file (https://github.com/espressif/esp-idf/bl ... _ble_api.h). In fact, MITM can be understood as requiring human participation in practice, such as entering a password and comparing the pairing code; if the default password is used for encryption and pairing (JUST WORK ) method, there is no way to prevent MITM attacks

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[staibiii]

Thank you for your help. Really appreciate that.