[B<-verify filename>]
[B<-prverify filename>]
[B<-signature filename>]
-[B<-hmac key>]
[B<-fips-fingerprint>]
[B<-engine id>]
[B<-engine_impl>]
The actual signature to verify.
-=item B<-hmac key>
-
-Create a hashed MAC using "key".
-
=item B<-mac alg>
Create MAC (keyed Message Authentication Code). The most popular MAC