[Cryptography] cheap sources of entropy

[Tom Mitchell]

On Mon, Jan 20, 2014 at 11:57 PM, Peter Gutmann
<pgut001 at cs.auckland.ac.nz> wrote:
> Bill Frantz <frantz at pwpconsult.com> writes:
>>On 1/20/14 at 9:13 AM, crypto.jmk at gmail.com (John Kelsey) wrote:
>>> The problem is, nobody makes *everything* they use.  A sufficiently
>>> resourceful attacker might attack your device on all kinds of
>>> levels, and you can't possibly check them all yourself.
>>
>>Hmm, 12AX7s cost about $15 and burn a bunch of power. How many do I need to
>>perform useful computation?
.....
> Or if you need something a bit faster, try the MT15:
>
> http://6502.org/users/dieter/mt15/mt15.htm
>
> All you need is about 3,000 BC547/557s.  Working at that level, you *can*
> actually check everything yourself.

200 chips in Magic-1
http://www.homebrewcpu.com/

You need a system....  consider the need for
memory, I/O and tools.

Magic-1 is as close to this discussion goal as I know.
It is a hardware system one mind can grock.





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