What's it like for blu-ray? I seem to recall that there's a master key or the like involved, which may require updating the br-player to successfully decode new

What's it like for blu-ray? I seem to recall that there's a master key or the like involved, which may require updating the br-player to successfully decode new discs if they change the key later on (which I also seem to recall...). Not FUDing, just not recalling completely, so can be completely off..