[B<-xoflen> I<length>]
[B<-r>]
[B<-out> I<filename>]
-[B<-sign> I<filename>]
+[B<-sign> I<filename>|I<uri>]
[B<-keyform> B<DER>|B<PEM>|B<P12>|B<ENGINE>]
[B<-passin> I<arg>]
[B<-verify> I<filename>]
Filename to output to, or standard output by default.
-=item B<-sign> I<filename>
+=item B<-sign> I<filename>|I<uri>
-Digitally sign the digest using the private key in "filename". Note this option
+Digitally sign the digest using the given private key. Note this option
does not support Ed25519 or Ed448 private keys. Use the L<openssl-pkeyutl(1)>
command instead for this.