If you insert a newer disc containing an updated Media Key Block into an older, unpatched Blu-ray drive, the disc can permanently revoke the drive's internal host certificates. Once revoked, the drive will refuse to decrypt or read any Blu-ray discs utilizing that specific AACS generation. How MakeMKV Bypasses AACS Protection
Prior to LibreDrive, your Blu-ray drive’s firmware was an enemy. The firmware was programmed to refuse reading certain areas of the disc if the AACS handshake failed. makemkv aacs
stands for Advanced Access Content System . It is a standard for content distribution and digital rights management (DRM) developed by a consortium of companies including Disney, Intel, Microsoft, Panasonic, Warner Bros., IBM, Toshiba, and Sony. If you insert a newer disc containing an
+-----------------------------------+ | Insert Encrypted Disc | +-----------------------------------+ | v +-----------------------------------+ | Does Drive Have LibreDrive? | +-----------------------------------+ / \ YES / \ NO v v +-----------------------------------+ +-----------------------------------+ | Bypasses Drive Revocation & | | Enforces Drive Restrictions & | | Reads Raw Volume ID (VID) Direct | | Checks AACS Host Certificate | +-----------------------------------+ +-----------------------------------+ \ / \ / v v +-----------------------------------+ | Acquire Decryption Key (VUK) | +-----------------------------------+ / \ METHOD 1 / \ METHOD 2 v v +-----------------------------------+ +-----------------------------------+ | Automated Hashed Keys (HK) | | Public Key Database (KeyDB) | | - Requires Internet Connection | | - Uses local 'keydb.cfg' file | | - Downloads directly from server| | - Manually synchronized file | +-----------------------------------+ +-----------------------------------+ \ / \ / v v +-----------------------------------+ | Successful Decryption & MKV Rip | +-----------------------------------+ 1. The Hashed Key (HK) System The firmware was programmed to refuse reading certain
A unique identifier embedded in the physical structure of the disc.