=item B<-keyform> B<DER>|B<PEM>|B<P12>|B<ENGINE>
The key format; the default is B<PEM>.
The only value with effect is B<ENGINE>; all others have become obsolete.
=item B<-keyform> B<DER>|B<PEM>|B<P12>|B<ENGINE>
The key format; the default is B<PEM>.
The only value with effect is B<ENGINE>; all others have become obsolete.