TPM cost constraint [was: RE: Revenge of the WAVEoid]

[Lucky Green]

Bill wrote:
> At 10:07 PM 06/26/2002 -0700, Lucky Green wrote:
> >An EMBASSY-like CPU security co-processor would have seriously blown 
> >the part cost design constraint on the TPM by an order of 
> magnitude or 
> >two.
> 
> Compared to the cost of rewriting Windows to have a 
> infrastructure that can support real security?  Maybe, but 
> I'm inclined to doubt it, especially since most of the 
> functions that an off-CPU security co-processor can 
> successfully perform are low enough performance that they 
> could be done on a PCI or PCMCIA card, without requiring motherboard 
> space.

Upon re-reading the paragraph I wrote, I can see how the text might have
been ambiguous. I was trying to express that there was a cost constraint
on the part. Adding the cost of an EMBASSY or SEE environment to the
purchase of every new PC is more than the market for bare-bones or even
mid-range PC's will bear.

--Lucky