3 ms·
> Movie DRM works because HDCP decrypts the video on the display. No, it doesn't. The movie is decrypted on the player, uncompressed, and encrypted again with
by cesarb 9y ago
> Movie DRM works because HDCP decrypts the video on the display.
No, it doesn't. The movie is decrypted on the player, uncompressed, and encrypted again with HDCP for the display.
- amdavidson 9y ago> ...encrypted again with HDCP for the display And after it is encrypted again "for" the display, the display decrypts it, closing the loop, and allowing the DRM to be at least more than trivially functional.