I am creating the image from source from the Armbian build repository on GitHub for an Orangepi5. I have altered the kernel configuration to force module signing. The .config is attached.
My problem is that after the build there is no signing_key.pem in /certs. But when I get the source from Torvalds repository and not using Armbian build the file gets created.
The following helps to realize the scope of my question:
https://www.kernel.org/doc/html/v6.1/admin-guide/module-signing.html#generating-signing-keys
.config