[Cryptech Core] how geeks say thanks

[bunnie]

I'll make the language tentative then:


The expansion board highlighted above is a prototype noise source based
on avalanche noise from the transistor that can be seen on the middle of
the board. CrypTech uses that noise to generate entropy in the FPGA. The
entropy is then combined with entropy generated by ring oscillators in
the FPGA and mixed using e.g. SHA-512 to generate seeds. The seeds are
then used to initialize the ChaCha stream cipher, ultimately resulting
in a stream of cryptographically sound random values. The result is a
high performance, state-of-the art random number generator coprocessor.
This of course represents just a first draft; since the implementation
is done in an FPGA, the CrypTech team will continue to evolve their
methodology and experiment with alternative methods to generate a robust
stream of random numbers

thanks,

-b.

On 10/01/2014 04:35 PM, Randy Bush wrote:
> hi bunnie,
> 
> it looks good to me, though i suspect that jpachim may want to waffle on
> the sh-512/chacha spec as he is now thinking of a keccak sponge
> approach.  but it makes little difference from your pov, i think.
> 
> randy
> 

-- 
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