grinding down chips was Re: QX10 graphics board

[Joe R.]

At 09:21 PM 1/26/06 -0800, you 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 Xbox
>innards did something of the sort (regardless, it's a great read):
>
>http://www.xenatera.com/bunnie/proj/anatak/xboxmod.html
>
>The operative term is "decapsulating";  if you google on it, you can find
>some interesting stuff, like:
>
>http://www.smtinfocus.com/technical_papers_list.html


   Diamond slitting saw should also turn up some useful information.

     Joe


>
>Cheers,
>Chuck
>
>
>