[Cryptech Tech] ent for rosc entropy in the Xilinx FPGA

[Bernd Paysan]

Am Montag, 8. Dezember 2014, 22:19:08 schrieb Joachim Strömbergson:
> Aloha!
> 
> Bernd Paysan wrote:
> > Sure, where can I get it?  A histogram plot over the bytes is the
> > thing I do first to check if there's something odd; from the ent
> > results, there probably isn't.
> 
> Great!
> 
> Do you have bittorrent sync? Otherwise we need to find a server to place
> the data on for you.

You can share a bittorrent sync link with me, that should do fine.

> > I would also like to have measurements with a high, constant sample
> > rate, e.g. every 16 cycles; I only need a few kilobytes of those, so
> > you can push that into an on-chip RAM.  This is a measurement of the
> > jitter, so you can see how often you can read the roscs.
> 
> Ok. I need to update the HW for that, but it should be easily doable. I
> will however not be able to do any serious work on that until Friday due
> to other assigments.

Ok.

> I can also send you the bitfile for the FPGA on the Novena and scripts
> etc to do extraction if you want to extract data yourself.

I haven't got time to play with the Novena board; have you any suggestions how 
to create the image for it?  It seems to be easier now,

https://github.com/xobs/novena-image

has a script which creates an image.

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
http://bernd-paysan.de/