High-bandwidth Digital Content Protection was designed by Intel to stop any copying of digital video while it is being transported across DVI or HDMI interfaces. This means it eliminates the possibility of intercepting digital data midstream between the source (set-top box, DVD players, etc,) and the display screen. HDCP, which encrypts the digital data, is also used in digital cinema. In all cases it is used to protect all high resolution (HD, UHD and Digital Cinema) content from being copied on the link from player to screen.
See also: HDMI