since janvitos and jokin have provided some info, i modified my hddvd key finder to search for bluray keys.
i don't have a drive so i haven't tested this yet, but it should work.
update: janvitos has confirmed it works.
update jan 22: fixed some wildcards in the search string
binary:
http://glib.name/bdkeyfinder.zip
http://mihd.net/ibjn6d
source (still a mess):
http://glib.name/bdkeyfinder_src.zip