Originally Posted by jeffreydeng
Here there is some hole in the process if what you kust described is correct. In order for both party of the communication understand to each other, they need to use handshaking protocols. If they use symmetric alogrithm for encrypting the data between them, they need to use the same key. If the key is embedded in the software, it will be found out later just like how AACS is broken. If they generate the key on the fly, someone can then monitor that process and get the key in the same way, so I think that the best business approach is to giving up the old thinking and find some other way.
Yes, the key is easily broken. Yes, it's a pointless and silly requirement for PAP/PAVP.
And yes, the hardware has to be certified. They are all using the same encryption as the non-PAP cards, but the PAP cards are certified that the encryption doesn't have some hole at the hardware level (e.g. where you could plug something in and get decrypted HD audio).
Very very dumb, since you can easily decrypt all the source material, and would never bother trying to decrypt at the hardware level. But whatever.
So while the 4850/70 and all the other HDMI HD audio/video IGPs on the market today are technically capable of sending HD audio bitstreams, the hardware hasn't been certified, and likely couldn't be certified, so the software players aren't allowed to send hd bitstream audio.
Simply braindead, yes.