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That's assuming you only ever run old Blu-Rays on that player. Blu-Ray has a thing called BD+ on it, which lets content companies run arbitrary native code on
by kmeisthax 3y ago
That's assuming you only ever run old Blu-Rays on that player.
Blu-Ray has a thing called BD+ on it, which lets content companies run arbitrary native code on your player (among other things). It also lets you update your player's key revocation list for HDCP. So either of these mechanisms could be used to render your old purchased content unplayable.
- LoganDark 3y agoThat's fun... if you connect your DVD player to the internet.
- yjftsjthsd-h 3y agoNo, they can ship updates on new disks and the player will read the code when it reads the movie.
- LoganDark 3y agoSo, pop in a new disc, and it comes with a new list of all the content that is not allowed to be played anymore? Ergo your old discs stop working because your player now knows the license expired or something stupid like that? That's literally evil.
- izacus 3y agoYep, it was even part of CSS (the older DVD DRM), but there they could "just" prevent playback of a given disc on certain players. AACS2 allows for carrying revocation lists on discs now.
- FirmwareBurner 3y agoDo you have any sources for this?
- whatevaa 3y agoI did a work on DRM during my master degree. It's somewhat true, it's called Broadcast Encryption. They can stop your players ability to read new disks. They can't stop existing ones though, unless the disk requires online component or something. DRM stands for Digital Rights Management, but I call it Digital Restrictions Management cause that's what it is from users point of view.
- FirmwareBurner 3y agoInteresting, thanks for sharing
- kmeisthax 3y agohttps://en.wikipedia.org/wiki/BD%2B https://en.wikipedia.org/wiki/BD%2B The one thing I'm not 100% certain on is if HDCP revocation list updates go through BD+ or if there's a separate mechanism for those updates. However, BD+ code gets to inspect your player software and modify it, which is sufficient capability to do updates, even if they don't use it for such. I also don't know if they continue to release updated BD+ code or if they've given up on that.