I am trying to figure out how to do the following in one command.
I have an ISO image along with its signature file *.sig. I tried to verify it via GnuPG 2 but it reported a missing public key giving me its fingerprint. I have successfully retrieved a key using the following
gpg2 --keyserver hkp://keys.gnupg.net --recv-key <fingerprint>
but when I checked the key
gpg2 --edit-key <KEY ID>
I have got this message:
27 signatures not checked due to missing keys
How can I retrieve all these keys to check that the key I have got is trusted?