Connection Encryption with Device Manager with hard coded key

[Emborf]

Hello,

I want to use preprogrammed Long Term Key (hard coded) with Device Manager for nRF52. I found the dm_enc_key structure but I could not find any solution to provide corresponding security data. I found the devzone.nordicsemi.com/.../ thread wanting the same without the Device Manager.

Please help.

Emborf

[Petter Myhre]

This is not possible using the Device Manager API, so you would need to modify the library. Could you explain a bit more about your application? Is it a peripheral application, central application or both? Are you sure you need the device manager?

[Emborf]

The application will have both peripheral and central devices. We also want maximum security with preprogrammed security keys. The application will also use vendor-specific GATT profiles. I am not sure that I need the device manager, (I do not have much experience with your products) just all your latest examples use it, so I assumed using it would be the lowest effort approach.

[Petter Myhre]

I would look into the solution provided by Marius Heil, it doesn't seem to require much effort, the Device Manager is just provided as an example on how to handle bonding. It handles the most common use cases, and may or may not be a good a starting point for further development, it depends on the application.