查看GPG列表

gpg --list-keys

导出

gpg --export-secret-keys -a <keyid> > private_key.asc
gpg --export -a <keyid> > public_key.asc

导入

gpg --import private_key.asc
gpg --import public_key.asc

信任导入的GPG

gpg --edit-key <keyid>
...
gpg> trust
...
Your decision? 5
Do you really want to set this key to ultimate trust? (y/N) y
...
gpg> save