HDCP was created by Intel and is administered by Digital Content Protection LLP.
It looks like all Blu-ray disks can now be unlocked and copied and another industry DRM has bit the dust.
Intel spokesman Tom Waldrop said after two days of investigation the key can produce product keys which means the code has been circumvented.
Waldrop said that a hacker could create a computer chip with the master key embedded, which could be used to decode Blu-ray disks.
He said a software decoder was unlikely, but possible.
However Intel still thinks that the HDCP technology has legs. But it does mean that if a hacker uses the keys, they will have to be sued or taken to court.
HDCP (High Definition Content Protection) protects data as it passes down a DVI or an HDMI cable. The cracking means that the bitstream now can be recorded and decrypted, allowing an encrypted film to be copied.
But it has been known for some time that obtaining copyrighted HD movie data is easy to hack.