[Cryptech Tech] [Cryptech Core] alpha board paper sketch

[Joachim Strömbergson]

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Aloha!

Peter Gutmann wrote:
> Another possibility with active tamper-detection is to send a
> crypto-checksum data pulse down a fibre-optic link every few tens of
> ms and verify its arrival at the other end.  This makes an attempt to
> sever the link by an attacker detectable.

There are actually smart card chips that does similar things by having a
PRNG generating patterns which are sent in the upper metal layers on the
chip that forms a mesh. Those things runs i kHz speeds though.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
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 Joachim Strömbergson          Secworks AB          joachim at secworks.se
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