this post was submitted on 09 Jan 2024
514 points (98.5% liked)
Technology
59575 readers
3453 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Do Blu rays require to phone home periodically to validate drm over the Internet? Genuine question., as I have read here that right to play them can be revoked.
They do not require any online connection. AACS has some ability to revoke media player keys, but it does so by encrypting future releases in such a way that the revoked player can not decrypt them (how this works technically is a bit complicated).
So if they decide to revoke your player, it can still play every Blu-ray disc manufactured before the revokation went into effect.
So yes a temporary internet connection is required. In order to download the updated keys.
No, there are no updated keys that need to be downloaded. It's kind of like, they just stop including the key matching the revoked device on future Blu-ray releases. All other devices are completely unaffected by this, because their key is still on the discs. So they don't need to change or update anything.