Absurdity? (Was: Ross's TCPA paper)

[Hadmut Danisch]

On Fri, Jul 05, 2002 at 09:14:27AM +0100, Matthew Byng-Maddick wrote:
> On Thu, Jul 04, 2002 at 10:54:11PM +0200, Hadmut Danisch wrote:
> [backdoored network cards]
> > I don't think so. As far as I understood, the 
> > bus system (PCI,...) will be encrypted as well. You'll have
> > to use a NIC which is certified and can decrypt the information
> > on the bus. Obviously, you won't get a certification for such
> > an network card.
> 
> Surely the obvious thing is that you build a network card without
> this property, and get it certified, and get the key to decrypt
> the data. Then you add the backdooring technology, at which point
> you have the advantage that you both have a certified "secure" 
> network card, and the key to decrypt data for you on the bus.
> 
> Not that I'm sure this helps, but it might.


Another question is:

How will you print? Certainly, you can't use just a plain
printer. Could be any microcontroller pretending to 
be a printer. So you need a certified and tamper
resistant printing device.

But what do you print on?

Yes, you need certified paper which refuses to
agree with being copied.


Hadmut

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