gpg keys can be stored in KFS via;
keybase pgp push-private KEYHASH
they can then be exported into the local machine gpg keychain via;
keybase pgp pull-private
If you have backed up private gpg keys on one server and transferred to another, they will lose the ‘trust’ so will show up as ‘[unknown]’ when listing them. To fix this (if you trust the keys), edit the key and change the trust level
gpg --edit-key user@example.com ... gpg> trust ... (select 5) gpg> save
should show up as ‘[ulimate]’ now
show keys in keyring
gpg -k
exporting public key
gpg --output ./my-public.key --armor --export user@example.com
import public key
from external.user@example.com
gpg --import their-public.key
If you trust it (check the fingerprint against what they sent you), then sign it
gpg --sign-key external.user@example.com
encrypting message to another user
gpg --encrypt --sign --armor -r external.user@example.com filename
decrypting message from another user
gpg --decrypt coded.asc > plain.txt