Intel has confirmed that code posted to the Internet earlier this week is the master key that is part of an Intel-created standard used to make sure only authorized devices are playing copyright-protected movies.

"We can use it to generate valid device keys that do interoperate with the (High-bandwidth Digital Content Protection) protocol," Intel spokesman Tom Waldrop told CNET today.

HDCP is used in set-top boxes, DVD, and Blu-ray disc players, and other devices to encrypt the content, audio, or video, and verify that the devices have HDCP licenses and thus won't play pirated content.
Intel: Leaked HDCP copy protection code is legit | InSecurity Complex - CNET News

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