How to create an encrypted/signed image

[Kaushik Parsana]

Hello,

How do I create an encrypted/signed image? Where can I find the documentation for doing this? How will I need to modify the bootloader to decode and install the image?

I'm on sdk v1.9.1.

Thanks

Kaushik Parsana

[Einar Thorsrud]

Hi,

Encrypted DFU images is currently not supported in the nRF Connect SDK. Updates are always signed though, and this is the default. You need to ensure that you provide your own key though, and not use the default key (though that is of course fine during development). For that you use CONFIG_BOOT_SIGNATURE_KEY_FILE and need to specify the full path. See for instance this thread.