format as that is the only legal option. If you have some specific
reason for wanting to use OpenSSH's newer format even for RSA, DSA,
or ECDSA keys, you can choose \q{Export OpenSSH key (force new file
-format}.
+format)}.
Note that since only SSH-2 keys come in different formats, the export
options are not available if you have generated an SSH-1 key.