HD-DVD decryption key ?? confused !

[bluraid]

whats the big deal about this HD-DVD decryption key 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0 ?? am a noob .. can somebody explain the significance of this stuff ??

i saw an article in digg

http://digg.com/tech_news/Digg_This_09_f9_11_02_9d_74_e3_5b_d8_41_56_c5_63_56_88_c0_4

what exactly is it ??

[Marvingj]

Media and Processing Keys, I don't think you can explain it here because of Lawsuit might be in process. To many Big Shots are watching.......( Movie People)

[nic2k4]

It's the private key for decoding HD DVD. What's a private key?

http://en.wikipedia.org/wiki/Public/private_key_cryptography

[Marvingj]

The red part is the hard part: getting the Media Key** (usually from a software player by debugging/memory snooping). But this only has to be done once per MKB and can be done by a pro.

The yellow part is what I described above: we either can (nearly) predict the Volume ID or we can get it via simple USB sniffing (the software player can't do much about that apart from bus encryption which is not implemented yet).

The blue part is the easiest: if we have the Volume ID (also called IDv) and the Media Key (Km) we can calculate the Volume Unique Key (Kvu) and then the Title Keys (Kt). This of course enables us to decrypt the content itself.

[Marvingj]

Originally Posted by arnezami
That basicly means that having a Volume ID (IDv) and a Media Key (Km) you can calculate the Volume Unique Key (Kvu).