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  2. Advanced Access Content System - Wikipedia

    en.wikipedia.org/wiki/Advanced_Access_Content_System

    AACS uses cryptography to control and restrict the use of digital media. It encrypts content under one or more title keys using the Advanced Encryption Standard (AES). Title keys are decrypted using a media key (encoded in a Media Key Block) and the Volume ID of the media (e.g., a physical serial number embedded on a pre-recorded disc).

  3. Security of Advanced Access Content System - Wikipedia

    en.wikipedia.org/wiki/Security_of_Advanced...

    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

  4. Encrypted Title Key - Wikipedia

    en.wikipedia.org/wiki/Encrypted_Title_Key

    Encrypted Title Key is an encrypted key that belongs to anticopy Advanced Access Content System (AACS). This key is included in the Media Key Block system and is an important part of the content protection process of Blu-ray and HD-DVD contents.

  5. AACS - Wikipedia

    en.wikipedia.org/wiki/AACS

    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

  6. Media Key Block - Wikipedia

    en.wikipedia.org/wiki/Media_Key_Block

    This situation has become even worse with the recent publication in multiple web sites of the Media Key, that is, the key that allows decrypting the Volume ID [4] and at the same time, the encrypted content, without the need of using a certified device by the AACS or a valid MKB. This is especially critical because nowadays the Volume ID is the ...

  7. Device Keys - Wikipedia

    en.wikipedia.org/wiki/Device_Keys

    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 compromised set of Device Keys to be unable ...

  8. COBOL - Wikipedia

    en.wikipedia.org/wiki/COBOL

    COBOL (/ ˈ k oʊ b ɒ l,-b ɔː l /; an acronym for "common business-oriented language") is a compiled English-like computer programming language designed for business use. It is an imperative, procedural, and, since 2002, object-oriented language.

  9. Illegal number - Wikipedia

    en.wikipedia.org/wiki/Illegal_number

    An illegal prime is an illegal number which is also prime.One of the earliest illegal prime numbers was generated in March 2001 by Phil Carmody.Its binary representation corresponds to a compressed version of the C source code of a computer program implementing the DeCSS decryption algorithm, which can be used by a computer to circumvent a DVD's copy protection.