=head1 NOTES
The algorithms for the OWF (one-way function) and for the MAC (message
-authentication code) may be any with a NID defined in C<openssl/objects.h>.
+authentication code) may be any with a NID defined in F<< <openssl/objects.h> >>.
As specified by RFC 4210, these should include NID_hmac_sha1.
RFC 4210 recommends that the salt SHOULD be at least 8 bytes (64 bits) long,