How to provide authorization of app before connection?

[Newbie]

Hello, I am using secure_dfu_secure_dfu_ble_s132_pca10040 project. Now I want that the user who has specific key can only access the nrf my device and then can send the zip package for dfu. How should I implement this? I am using nrf52 amd sdk12. I am able to transfer zip package using nrf toolbox.

The file is nrf_ble_dfu.txt

Modified code is code.txt

Ble_gap.h ble_gap.txt

[Newbie]

Additionally we can also argue that if the key that nordic generates for us which we make our 'private' key can also get into the hands of the attacker. Isn't that also possible?

You mentioned of some complex mechanisms of our choice. Do you have any suggestions on that? We are newbies into this area so any help that you can provide will be much appreciated.

Thanks

Shailav.