grinding down chips was Re: QX10 graphics board

Pete Turnbull pete at
Fri Jan 27 02:14:45 CST 2006

On Jan 26 2006, 21:21, Chuck Guzis wrote:
> On 1/26/2006 at 9:24 PM Richard wrote:
> >Aren't there chips (i.e. crypto) that are designed to be destroyed
> >if they are disassembled?  I don't know what they do to the package,
> >but if I had an IC with an EPROM containing my crypto keys, I'd want
> >the chip to self-destruct during an attempt to pry open the package
> I don't know about grinding, but the guy at MIT who figured out the
> innards did something of the sort (regardless, it's a great read):
> The operative term is "decapsulating";  if you google on it, you can
> some interesting stuff, like:

The javascript on that page doesn't work for me but if you google for
"mondex nitric acid" you'll find some good descriptions.

Pete						Peter Turnbull
						Network Manager
						University of York

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