[onerng talk] Dieharder results

[Chad Simmons]

Paul,

This is a V2 internal unit. It was shipped on 2/4/16.

Thanks,

Chad

On Wed, May 11, 2016 at 5:48 AM, Paul Campbell <paul at taniwha.com> wrote:

> On Thursday, 5 May 2016 9:42:29 AM NZST chad.simmons wrote:
> > I haven't got to the end of a complete test yet but I am seeing a lot of
> > failures that aren't seen in the example.
> >
> > dieharder -g 201 -f /dev/ttyACM0 -a
> >
> #===========================================================================
> > ==# #            dieharder version 3.31.1 Copyright 2003 Robert G.
> > Brown          #
> >
> #==========================================================================
> > ===# rng_name    |           filename             |rands/second|
> >  file_input_raw|                    /dev/ttyACM0|  1.43e+04  |
> >
> #===========================================================================
> > ==# test_name   |ntup| tsamples |psamples|  p-value |Assessment
> >
> #==========================================================================
> > ===# diehard_birthdays|   0|       100|     100|0.69758051|  PASSED
> >       diehard_operm5|   0|   1000000|     100|0.49012552|  PASSED
> >   diehard_rank_32x32|   0|     40000|     100|0.25287355|  PASSED
> >     diehard_rank_6x8|   0|    100000|     100|0.94929849|  PASSED
> >    diehard_bitstream|   0|   2097152|     100|0.00000000|  FAILED
> >         diehard_opso|   0|   2097152|     100|0.00000000|  FAILED
> >         diehard_oqso|   0|   2097152|     100|0.00000000|  FAILED
> >          diehard_dna|   0|   2097152|     100|0.87108355|  PASSED
> > diehard_count_1s_str|   0|    256000|     100|0.00000000|  FAILED
> > diehard_count_1s_byt|   0|    256000|     100|0.00608741|  PASSED
> >  diehard_parking_lot|   0|     12000|     100|0.00000279|   WEAK
> >     diehard_2dsphere|   2|      8000|     100|0.09904470|  PASSED
> >     diehard_3dsphere|   3|      4000|     100|0.37658609|  PASSED
>
> sorry I've taken a while to respond .... can I ask what platform are you
> using
> - the original (boxy) unit? the unit we shipped from China (some of which
> suffered from overheating)? or a unit that I've replaced since?
>
> I expect an original unit to not perform as well as a current unit - I did
> some firmware changes on the newer devices to collect twice as much entropy
> per bit so the published results are expected to be better for the newer
> parts
> .... but not that bad.
>
> If you have one of the original made-in-China units that hasn't been
> replaced
> due to overheating I'd suggest replacing it, even though the year's
> warranty
> is almost up I will continue to replace those units
>
>         Paul
>
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