GAP Security Mode 2

[hampustjader]

Hi,

I'm interested in using data signing for authentication since encryption is not wanted. However, I have not found any support for this. Currently I'm using softdevice s132 v2.0.0 and a nrf52.

Is this mode supported? And if not, are there any plans for supporting this in a near future?

(Data signing on the application level is not wanted.)

Thank you,

Hampus

[Jørgen Holmefjord]

Hi,

Security Mode 2 is not supported by the s132 softdevice. You can see all details on what features are supported by the softdevice in the Bluetooth qualification listing.

Why do you not want encryption?

Best regards,

Jørgen

[hampustjader]

Thank you so much!

Encryption will instead be provided in the application level. (Experimental)

Best regards, Hampus

[hampustjader]

I received an errorcode = 6 ("NOT_SUPPORTED") when I set "BLE_GAP_CONN_SEC_MODE_SET_SIGNED_NO_MITM(&sec_mode);" inside the function gap_params_init() for a ble_peripheral template. Is it any other configuration that is needed to support the mode? Security mode 1 works fine and I'm using SDK 12.1

Best regards

[Jørgen Holmefjord]

I have checked this further and unfortunately, LE Security Mode 2 is not supported by our softdevice. I will update my initial answer to reflect this.

[randy]

Is there any real use case that needs to use Security mode 2?