Without a valid certificate, software cannot authenticate with the drive to read the Volume Identifier (VID) , which is essential for creating a Volume Unique Key (VUK).
Despite these hurdles, the community has developed several ways to handle MKBv82 protected content: View Single Post - Up to MKB v68 KEYDB.cfg file mkbv82
AACS protection relies on a , a data structure on the disc that allows authorized players to calculate a "Media Key". Each new version of MKB can contain a Revocation List , which "kills" compromised host certificates or device keys used by unauthorized software. Without a valid certificate