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The Advanced Access Content System (AACS) is a standard for content distribution and digital rights management, intended to restrict access to and copying of the post-DVD generation of optical discs. The specification was publicly released in April 2005. The standard has been adopted as the access restriction scheme for HD DVD and Blu-ray Disc ...
The AACS system relies on a subset difference tree combined with a certificate revocation mechanism to ensure the security of high definition video content in the event of a compromise. Even before AACS was put into use, security researchers expressed doubts about the system's ability to withstand attacks. AACS decryption process
The following design principles are laid out in the paper: Economy of mechanism: Keep the design as simple and small as possible. Fail-safe defaults: Base access decisions on permission rather than exclusion. Complete mediation: Every access to every object must be checked for authority. Open design: The design should not be secret.
Security of Advanced Access Content System This page was last edited on 9 January 2019, at 09:31 (UTC). Text is available under the Creative Commons ...
AACS may refer to: . Advanced Access Content System, a standard for content distribution and digital rights management . AACS encryption key controversy; American Association of Christian Schools, an organization that unifies individual Christian schools and statewide Christian school associations
In December 2006, the industrial-grade Advanced Access Content System (AACS) for HD DVD and Blu-ray Discs, a process key was published by hackers, which enabled unrestricted access to AACS-protected content. [40] [41] In January 2007, EMI stopped publishing audio CDs with DRM, stating that "the costs of DRM do not measure up to the results."
AACS LA (Advanced Access Content System Licensing Administrator) is the body that develops and licenses the AACS copy-protection system used on the HD DVD and Blu-ray Disc high-definition optical disc formats.
MKB enables system renewability. The MKB is generated by AACS LA , and allows all compliant devices, each using their set of secret Device Keys, to calculate the same Media Key (Km). If a set of Device Keys is compromised in a way that threatens the integrity of the system, an updated MKB can be released that causes a device with the ...