
Many decryption programs were made available, but the interest to Linux users was the capability of playing their discs - legally purchased - on their computers. In 2007, the AACS system was compromised and decryption keys were published on the Internet.


Although most of commercial discs use AACS, a few of them additionally use BD+. Secondly, Blu-ray may also use another layer of protection: BD+. Firstly, the AACS standard uses a lot more complicated cryptographic process to protect the disc content, but also allows the industry to revoke compromised keys and distribute new keys through new discs.

