[B<-pubin>]
[B<-pubout>]
[B<-engine id>]
+[B<-check>]
=head1 DESCRIPTION
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
+=item B<-check>
+
+This option checks the consistency of a key pair for both public and private
+components.
+
=back
=head1 EXAMPLES