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PVP tries to stop DRM-restricted content from playing while unsigned software is running, in order to prevent the unsigned software from accessing the content. Additionally, PVP can encrypt information during transmission to the monitor or the graphics card, which makes it more difficult to make unauthorized recordings.
Abbey House was bound by law to protect those files with DRM, but when it was a month away from shutting down its digital bookstore in 2013, someone in the company felt compelled to help customers ...
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 combination of 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).
DRM may be legally circumvented under a few distinct circumstances which are named as exceptions in the law: permission of the rightsholder; enabling interoperability with copyrighted software; encryption research; security testing; disabling access to private information (circumvention only) national security or law enforcement
It is sometimes referred to as E-DRM or Enterprise Digital Rights Management. This can cause confusion, because digital rights management (DRM) technologies are typically associated with business-to-consumer systems designed to protect rich media such as music and video. IRM is a technology which allows for information (mostly in the form of ...
DRM systems in which keys for encryption and decryption do not change can be attacked with one compromised key, allowing decoding of all content using that key. SPDC attempts to keep future content protected by allowing changes to the DRM in new releases when an existing DRM method is circumvented.
the encryption of keys for the authentication handshake. In order to decrypt a DVD-Video, the player reads the disc-key-block and uses its player-key to decrypt the disc-key. Thereafter, the player reads the title-keys and decrypts them with the disc-key. A different title-key can be assigned for the Video Manager and for each Video Title Set ...
FairPlay DRM creates a public/private key pair when a device is registered with an iCloud account, and encrypting app encryption keys using the "public" key (which is kept on Apple's servers) in order to decrypt them on the device using the "private" key.