It is messy. It may be easiest to disable SecureBoot:
Otherwise you have to generate your key and add it using MOK:
"Loading kernel modules that are not signed by a trusted key. By default, this will
block out-of-tree modules including DKMS-managed drivers. However, you can create your own
signing key for modules and add its certificate to the trusted list using MOK. "
On Sun, May 31, 2020 at 12:35:15PM -0400, Richard Klein via WLUG wrote:
> I'm trying to build Droidcam. Part of the install process wants to sign a
> "Secure Boot is enabled, attempting to sign the driver
> please specify signing key location (or leave empty to sign manually later)
> You can Google 'secure boot' for your distro
> Enter the path of the public key:"
> Googling didn't show me a clear answer. Does anyone know what path it's
> looking for?