How to backup your keys.

Public Key

gpg2 --export --armor CCCCCCCCCCCCCCCC > pubkey.ascii

Full Key

(including private part, probably what you are looking for)

gpg2 --export-secret-key --armor CCCCCCCCCCCCCCCC > fullkey.ascii


An exported private key, e.g. stored on a USB stick is unprotected if you loose they storage media. You can encrypt and decrypt the backup file with a simple password via:

# encrypt with password
gpg -c fullkey.ascii
# generates an encrypted fullkey.ascii.gpg file
rm fullkey.ascii

# descrypt with password
gpg -d fullkey.ascii.gpg > fullkey.ascii
# generates a decrypted fullkey.ascii file


(for keys moved to smartcards)