[Gnuk-users] TRNG output

[flapflap]

Kurt Roeckx:
> On Thu, Aug 27, 2015 at 03:18:52PM +0000, flapflap wrote:
>> Hi,
>>
>> NIIBE Yutaka:
>>> Hello,
>>>
>>> Fix to the last message of mine:
>>> While the thesis I referred is good to read (because it explain
>>> many related things), I should have referred this paper for the
>>> specific idea of use of ADC component as a source of entropy:
>>>
>>>     Fabio Pareschi, Gianluca Setti, Riccardo Rovatti
>>>     A Fast Chaos-based True Random Number Generator for Cryptographic Applications
>>>     http://www.researchgate.net/publication/224056101_A_Fast_Chaos-based_True_Random_Number_Generator_for_Cryptographic_Applications
>>
>> You might also be interested in the CrypTech project
>> https://cryptech.is/ that aims to provide free SW and free HW design
>> cryptographic implementations, for example using the Novena board.
> 
> They have a TLSA record that doesn't match the certificate they're
> using.

see https://cryptech.is/resources/

> There are also various other open hardware TRNGs being
> implemented, and I think it would be useful for all of them to
> know whate the state of the art is when it comes to generating
> good output from whatever source they use.
> 
> What they all seem to lack is a calculation (and proof) of the
> (minimum) entropy.  For noise over a resistor (measured by an ADC)
> you should be able to calcualte it, but it's currently unclear to
> me how to do it for other methods people want to us.

I only know the cryptech TRNG readme mention to use ent and rngtest to
verify the output.

~flapflap