Russell Miller wrote:
However, the keys are embedded in the HDCP-enabled DVI/HDMI chips.
If you don't sign the license agreement, you don't get officially
generated, signed keys. Even if you could get a vendor to sell
you chips, what keys would they contain? The vendor certainly isn't
going to sell you chips containing Sony's key, for instance.
Even if the vendor were to allow you to generate your own key and
have chips made with it, or you made the chips yourself, they
would be useless. Since your key wouldn't be signed by the
HDCP licensing authority, the chips wouldn't interoperate with real HDCP
products.
This makes it difficult to get said keys but not impossible.
All you'd need is to open the chip and apply a fairly powerful microscope to
it. I think you can see the state of flash or PROM gates, and even if not,
nothing's stopping you from probing it.
This increases the barrier, but does not remove it.
I must admit that I am not clear on this. If you buy a SiliconImage
HDMI/HDCP transmitter chip (which you need a license to purchase) it was
my understanding that this came with the keys.
--
JRT
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