Thus playing newer discs propagates the revoked key lists out to all drives.ĪACS was broken beginning in late 2006, and numerous AACS decryption programs are available online. When a newer Blu-ray disc is inserted into an older drive, the drive is required to check the version of the "Media Key Block" (MKB) on the disc and, if it is newer than the one the drive has internally, to copy over to permanent non-volatile memory the newer MKB. It is based on Advanced Encryption Standard (AES), a robust 128-bit key encryption system developed by the US government.ĪACS includes a system by which the keys assigned to a particular player can be "revoked" for future Blu-ray disc releases if it is determined that those keys have been compromised. The first level of copy protection applied to pre-recorded discs is the Advanced Access Content System (AACS) developed by the AACS Licensing Administrator, a consortium of companies including Disney, Intel, Microsoft, Panasonic, Warner Bros., IBM, Toshiba and Sony. Today, we will show you how to remove the encryption (AACS) from Blu-ray. There are several distinct levels of copy protection for pre-recorded discs. The copy protection used on pre-recorded discs is in practice only applied to the stream files and not to any other files that make up the format. The Blu-ray Disc standard mandates that all pre-recorded discs be protected by a copy-protection scheme. 09:21 am / Posted by Diana Joan | Categories: Blu-ray, NAS
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