The test/dev key that was used to sign the kernel from this PPA is itself also part of the PPA. Find the PPA archive URL (aka 'deb-line') by browsing the landing page of this PPA: https://launchpad.net/~sforshee/+archive/ubuntu/lp1866909 The URL ('deb-line') is: http://ppa.launchpad.net/sforshee/lp1866909/ubuntu and follow that via '/dists/focal/main/signed/linux-ppc64el/current/' and you will find the key here (incl. checksum): http://ppa.launchpad.net/sforshee/lp1866909/ubuntu/dists/focal/main/signed/linux-ppc64el/current/ The key file itself is: http://ppa.launchpad.net/sforshee/lp1866909/ubuntu/dists/focal/main/signed/linux-ppc64el/current/signed.tar.gz (extract for example with 'tar xf')
The test/dev key that was used to sign the kernel from this PPA is itself also part of the PPA. /launchpad. net/~sforshee/ +archive/ ubuntu/ lp1866909 ppa.launchpad. net/sforshee/ lp1866909/ ubuntu focal/main/ signed/ linux-ppc64el/ current/ ' and you will find the key here (incl. checksum): ppa.launchpad. net/sforshee/ lp1866909/ ubuntu/ dists/focal/ main/signed/ linux-ppc64el/ current/ ppa.launchpad. net/sforshee/ lp1866909/ ubuntu/ dists/focal/ main/signed/ linux-ppc64el/ current/ signed. tar.gz
Find the PPA archive URL (aka 'deb-line') by browsing the landing page of this PPA:
https:/
The URL ('deb-line') is: http://
and follow that via '/dists/
http://
The key file itself is:
http://
(extract for example with 'tar xf')