ble security nrf52840

[Zeynal]

How can I add security middleware, between connection request device and my connectable device.

I want to that if one device sent connection request to my device, I want checking in request mac addres and something like that.

But I dont found anythink about that.

How can I implemented something like that ?

[Zeynal]

finaly, this address is specific or not. I mean this, This address is like a mac address not changing or not ?

[Edvin]

If it is a phone, it may change. If you want to be able to determine whether it is the same device, but it has changed address, you need to bond. You can read about it in this devzone thread.

If you look at it from a hacker's point of view, who wants to steal the data from a connection, you need to bond in order to prevent anyone from doing so. Both encryption and a shared secret (bonding data) are needed for this.

To check if a new address belongs to a known device, you need the IRK. This is passed on through bonding.