=head1 SYNOPSIS
B<openssl> B<dgst>
+[B<-help>]
[B<-sha|-sha1|-mdc2|-ripemd160|-sha224|-sha256|-sha384|-sha512|-md4|-md5>]
[B<-c>]
[B<-d>]
=over 4
+=item B<-help>
+
+Print out a usage message.
+
=item B<-c>
print out the digest in two digit groups separated by colons, only relevant if