26 Jan
2006
26 Jan
'06
8:24 p.m.
On 1/24/06, Chris M <chrism3667 at yahoo.com> wrote:
I've been dying to ask this question. Can you
actually learn something (hopefully a whole lot!)
about a chip if you actually did this??? What if there
was some old chip for which there is no documentation.
If, given the availability of the proper equipment
(surface grinder?), you were able to take off say
.0001" of material at a time, or thereabouts ;), would
you have the ability to photograph it, and have
something in the way of a working schematic?
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
:).
--
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