identical iso to and from dvd+rw

[Frantisek Kluknavsky <fkluknav@redhat.com>]

Hi,

please, how to write a given iso file to a medium (dvd+rw in my case) 
and then extract the same iso (same in the sense of length and checksum) 
from the medium? Is this even possible?

Thank you very much.

Frantisek Kluknavsky