[Gnuk-users] [PATCH 0/7] Gnuk: add support for Cortex M4 MCU

[NIIBE Yutaka]

Aurelien Jarno <aurelien at aurel32.net> wrote:
> This patchset adds support and optimizations for Cortex M4 MCU (and
> later). It is not fully useable until support for such an MCU is merged
> into into Chopstx, but can already be used when running Gnuk on GNU/Linux
> in emulation mode on an ARM v7 CPU.

Great.  Thanks your sharing your efforts.  I'll merge the patchset to
master.

Please let me explain about copyright and the condition of
use-and-distribution of Gnuk and the situation of potion of polarssl in
Gnuk.

Gnuk is copyrighted by FSIJ (Free Software Initiative of Japan, a non
profit organization in Tokyo), and the source code is distributed under
GPLv3+.  Because its use is for the firmware in USB device, the
condition of binary is a bit tricky.  As I wrote in another mesage to
this list today, binary distribution which includes FSIJ's VID is not
free in terms of Free Software Definition, unfortunately.  It's bound to
the agreement between FSIJ and USB-IF.  FSIJ can only allow limited use
of its VID which is considered OK (= not accused by USB-IF), and cannot
allow binary distribution in general.

I think that your code is copyrighted by yourself and you agree the
current condition of use-and-distribution.  Specifically, please accept
FSIJ's putting restriction of its VID usage with Gnuk (not allowing
binary distribution which includes FSIJ's VID).

If not, please describe your request.  I wish your request will not
complicate the situation further.


Speaking about my own situation, once, I have said publicly that my code
should be 100% free software, always.  (I didn't expect I encounter such
a tricky situation.)  One of the reasons why I assign my work for Gnuk
to FSIJ is to keep sane myself. :-)


Gnuk includes a fork of PolarSSL.  Once I tried to ask merging my
changes to Paul Bakker, but major changes of mine were not included
(while some were included).  Then, I changed it heavily, as a fork.
Meanwhile, PolarSSL renamed to mbedTLS.  The upstream RSA routines
changed, introducing base blinding and exponent blinding.  Gnuk doesn't
use base blinding.  Gnuk has not merged the upstream change of exponent
blinding.

Currently, I don't have any idea to spent my time for merging my changes
into upstream.

Please understand this situation, while your submitting the patchset.
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