2007/2/18, Russell Miller <[EMAIL PROTECTED]>:
> 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.
Before invasive attack, you could use more easy one, like fault injection (using out of spec voltage on pin for exemple or glitch). I don't think that those chip are protected as chip card chips. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
