Add subkeys:

????

Backup:

gpg --export --armor pcampbell@kemitix.net > gpg-key-backup.asc
gpg --export-secret-keys --armor pcampbell@kemitix.net >> gpg-key-backup.asc

Export sub-keys:

gpg --export-secret-subkeys pcampbell@kemitix.net > subkeys

Remove master keys:

gpg --delete-secret-key pcampbell@kemitix.net

Import sub-keys and clean up:

gpg --import subkeys

shred --remove subkeys

Delete any encryption subkeys:

gpg --edit-key pcampbell@kemitix.net

2
delkey
save

Change passphrase:

gpg --edit-key pcampbell@kemitix.net
passwd
save

Export keys:

gpg --export --armor pcampbell@kemitix.net > codesigning.asc
gpg --export-secret-keys --armor pcampbell@kemitix.net >> codesigning.asc

Encrypt keys:

gpg --symmetric --cipher-algo AES256 codesigning.asc