Signing someone else key Get key to sign gpg --list-keys Sign the key gpg --sign-key --ask-cert-level 0xXXXXXXXXX Export the signed key and encrypt it with the recipient public key gpg --armor --export 0xXXXXXXXXX | gpg --encrypt -r 0xXXXXXXXXX --armor --output 0xXXXXXXXXX-signedBy-0xMYOWNKEY.asc Send the signed, encrypted key to the recipient (email or whatever, but encrypted !) The recipient will decrypt and import the signature into his keychain gpg -d /tmp/0xXXXXXXXXX-signedBy-0xMYOWNKEY.asc gpg --import /tmp/0xXXXXXXXXX-signedBy-0xMYOWNKEY.asc The recipient will upload the key to a key server gpg --send-key 0xXXXXXXXXX
