[B<-in filename>]
[B<-out filename>]
[B<-key keyfile>]
+[B<-passin arg>]
[B<-challenge string>]
[B<-pubkey>]
[B<-spkac spkacname>]
B<-in>, B<-noout>, B<-spksect> and B<-verify> options are ignored if
present.
+=item B<-passin password>
+
+the input file password source. For more information about the format of B<arg>
+see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)|openssl(1)>.
+
=item B<-challenge string>
specifies the challenge string if an SPKAC is being created.