content that uses the DVI and HDMI interface. HDCP encrypts
the transmission of digital content between the video source or
transmitter—such as a computer, DVD player or set-top-box—
and the digital display, or receiver—such as a monitor, television
or projector. HDCP is not designed to prevent copying or record-
ing of digital content but to protect the integrity of content as it
is being transmitted.
Implementation of HDCP requires a license obtainable from
Digital Content Protection, LLC, which then issues a set of unique
secret device keys to all authorized devices. During authentica-
tion, the receiver will only accept content once it demonstrates
knowledge of the keys. Furthermore, to prevent eavesdropping
and data theft, the transmitter and receiver will generate a shared
secret value that is consistently checked throughout the transmis-
sion. Once authentication is established, the transmitter encrypts
the data and sends it to the receiver for decryption.
References
Webopedia - http://www.webopedia.com/term/h/hdcp.html
This white paper was published in and based on information as
of January 2007. Technical information is subject to change.
©
2007 NEC Display Solutions of America, Inc.
All rights reserved.
NEC Display Solutions
500 Park Boulevard, Suite 1100
Itasca, IL 60143
866-NEC-MORE
www.necdisplay.com
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