: Over 26 providers, including China Central Television and Sky Network Television, use this system for conditional access .
: One of the most widespread users of the digital VideoGuard system.
: These are used to decrypt Entitlement Management Messages (EMMs) . These messages are sent over-the-air to tell your receiver which channel packages you are allowed to watch. videoguard keys
: Utilizes a custom version of VideoGuard integrated directly into their set-top boxes.
: These are short-term decryption keys for the actual video stream. They rotate frequently—often several times per minute—to make it difficult for pirates to maintain unauthorized access. : Over 26 providers, including China Central Television
: Every authorized receiver or smartcard contains a unique keycode. This key is specific to that hardware and cannot be used with other receivers.
The encryption process relies on a multi-layered hierarchy of keys to prevent unauthorized access: These messages are sent over-the-air to tell your
VideoGuard is used by major global broadcasters to protect their revenue and content rights: