Assuming the master key is indeed legitimate, it wouldn’t be of much use for average consumers at this point, as Ars Technica’s Peter Bright explains. While the web has been buzzing about this one for a few days now, it’s a little difficult to ascertain the validity of the claims made. The master key is a a 40Ã-40 matrix of 56-bit numbers. There’s also the possibility that the key has been leaked instead of generated, but the author of a 2001 paper warning about the possibility to generate the key doesn’t think this is the case. To achieve this, each key – source and sink – has to be generated from the same master key.Īs early as 2001 people warned that it would only take about 50 source/sink keys to be able to generate the master key, and if the rumours are indeed true, then this has finally happened over the past few weeks. Each source and sink device has its own private key, generated in such a way that each pair can decrypt the data sent from source to sink without revealing the actual keys in use. HDCP is an invention from Intel, which secures the data path between playback device (source) and receiver (sink). HDCP is a copy protection mechanism which protects the audio and video streams sent over DisplayPort, HDMI, and DVI. If the rumours are true, and if this Pastebin post (be sure to mirror the key if that won’t get you in trouble with your authorities) is legitimate, then it looks like High-bandwidth Digital Content Protection has been cracked so hard its mother’s mother felt it.
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