crypto: gpg

gpg --list-keys // get a list of all keys installed in the system
gpg --list-sigs // get a list of all the keys in the system (with all signatures)
gpg --sign-key ID // to sign a key with a specific ID
gpg --import KEY // import the key into the system
gpg --export -a -o KEY.asc ID // export the key in ascii format to a file KEY.asc