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ben/gpygme
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5
AUTHORS
5
AUTHORS
@ -23,6 +23,11 @@ Werner Koch <wk@gnupg.org>
|
||||
Wojciech Polak <polak@lodz.pdi.net>
|
||||
- gpgme.spec
|
||||
|
||||
Ben McGinnes <ben@adversary.org>
|
||||
- Python 3 port of SWIG generated wrappers; pyme 0.9: lang/pyme.
|
||||
- Python 3 API for all non-C languages; GPyGME (pronounced "pig-me"):
|
||||
lang/gpygme.
|
||||
|
||||
|
||||
Authors with a DCO
|
||||
==================
|
||||
|
340
lang/gpygme/COPYING
Normal file
340
lang/gpygme/COPYING
Normal file
@ -0,0 +1,340 @@
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
|
||||
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
License is intended to guarantee your freedom to share and change free
|
||||
software--to make sure the software is free for all its users. This
|
||||
General Public License applies to most of the Free Software
|
||||
Foundation's software and to any other program whose authors commit to
|
||||
using it. (Some other Free Software Foundation software is covered by
|
||||
the GNU Library General Public License instead.) You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
this service if you wish), that you receive source code or can get it
|
||||
if you want it, that you can change the software or use pieces of it
|
||||
in new free programs; and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
anyone to deny you these rights or to ask you to surrender the rights.
|
||||
These restrictions translate to certain responsibilities for you if you
|
||||
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|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
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|
||||
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|
||||
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|
||||
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||||
We protect your rights with two steps: (1) copyright the software, and
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||||
GNU GENERAL PUBLIC LICENSE
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||||
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In addition, mere aggregation of another work not based on the Program
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||||
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|
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|
||||
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||||
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||||
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|
||||
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||||
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|
||||
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|
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||||
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|
||||
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||||
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||||
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||||
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||||
If any portion of this section is held invalid or unenforceable under
|
||||
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|
||||
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||||
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||||
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||||
It is not the purpose of this section to induce you to infringe any
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||||
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||||
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||||
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||||
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|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
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|
||||
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|
||||
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|
||||
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||||
|
||||
NO WARRANTY
|
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||
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|
||||
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|
||||
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|
||||
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||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
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||||
REPAIR OR CORRECTION.
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||||
|
||||
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|
||||
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|
||||
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|
||||
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|
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|
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
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|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
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|
||||
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|
||||
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|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
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||||
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|
||||
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||||
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|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
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|
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|
||||
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||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
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|
||||
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|
||||
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program is interactive, make it output a short notice like this
|
||||
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|
||||
|
||||
Gnomovision version 69, Copyright (C) year name of author
|
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
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|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
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|
||||
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|
||||
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|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
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|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1989
|
||||
Ty Coon, President of Vice
|
||||
|
||||
This General Public License does not permit incorporating your program into
|
||||
proprietary programs. If your program is a subroutine library, you may
|
||||
consider it more useful to permit linking proprietary applications with the
|
||||
library. If this is what you want to do, use the GNU Library General
|
||||
Public License instead of this License.
|
508
lang/gpygme/COPYING.LESSER
Normal file
508
lang/gpygme/COPYING.LESSER
Normal file
@ -0,0 +1,508 @@
|
||||
|
||||
GNU LESSER GENERAL PUBLIC LICENSE
|
||||
Version 2.1, February 1999
|
||||
|
||||
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
|
||||
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
[This is the first released version of the Lesser GPL. It also counts
|
||||
as the successor of the GNU Library Public License, version 2, hence
|
||||
the version number 2.1.]
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
Licenses are intended to guarantee your freedom to share and change
|
||||
free software--to make sure the software is free for all its users.
|
||||
|
||||
This license, the Lesser General Public License, applies to some
|
||||
specially designated software packages--typically libraries--of the
|
||||
Free Software Foundation and other authors who decide to use it. You
|
||||
can use it too, but we suggest you first think carefully about whether
|
||||
this license or the ordinary General Public License is the better
|
||||
strategy to use in any particular case, based on the explanations
|
||||
below.
|
||||
|
||||
When we speak of free software, we are referring to freedom of use,
|
||||
not price. Our General Public Licenses are designed to make sure that
|
||||
you have the freedom to distribute copies of free software (and charge
|
||||
for this service if you wish); that you receive source code or can get
|
||||
it if you want it; that you can change the software and use pieces of
|
||||
it in new free programs; and that you are informed that you can do
|
||||
these things.
|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
distributors to deny you these rights or to ask you to surrender these
|
||||
rights. These restrictions translate to certain responsibilities for
|
||||
you if you distribute copies of the library or if you modify it.
|
||||
|
||||
For example, if you distribute copies of the library, whether gratis
|
||||
or for a fee, you must give the recipients all the rights that we gave
|
||||
you. You must make sure that they, too, receive or can get the source
|
||||
code. If you link other code with the library, you must provide
|
||||
complete object files to the recipients, so that they can relink them
|
||||
with the library after making changes to the library and recompiling
|
||||
it. And you must show them these terms so they know their rights.
|
||||
|
||||
We protect your rights with a two-step method: (1) we copyright the
|
||||
library, and (2) we offer you this license, which gives you legal
|
||||
permission to copy, distribute and/or modify the library.
|
||||
|
||||
To protect each distributor, we want to make it very clear that
|
||||
there is no warranty for the free library. Also, if the library is
|
||||
modified by someone else and passed on, the recipients should know
|
||||
that what they have is not the original version, so that the original
|
||||
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Finally, software patents pose a constant threat to the existence of
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END OF TERMS AND CONDITIONS
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^L
|
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How to Apply These Terms to Your New Libraries
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If you develop a new library, and you want it to be of the greatest
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This library is free software; you can redistribute it and/or
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|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
This library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with this library; if not, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or
|
||||
your school, if any, to sign a "copyright disclaimer" for the library,
|
||||
if necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the
|
||||
library `Frob' (a library for tweaking knobs) written by James
|
||||
Random Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1990
|
||||
Ty Coon, President of Vice
|
||||
|
||||
That's all there is to it!
|
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118
lang/gpygme/docs/FAQ.org
Normal file
118
lang/gpygme/docs/FAQ.org
Normal file
@ -0,0 +1,118 @@
|
||||
* Frequently Asked‡ Questions
|
||||
|
||||
‡ At this stage these are more like Frequently Anticipated Questions.
|
||||
|
||||
** Using the Project
|
||||
|
||||
*1. Why implement an interactive codebase?*
|
||||
|
||||
For good or ill, modern application development has turned to many web
|
||||
based technologies. As a result there are many more developers who no
|
||||
longer use or know languages like C. Consequently complete APIs like
|
||||
GPGME are not available to them when they may very well need it or
|
||||
benefit greatly from it. Rather than continuing existing systems which
|
||||
utilise wrappers calling command line programs (e.g. [[https://bitbucket.org/vinay.sajip/python-gnupg][python-gnupg]]), it
|
||||
is best to provide access to GPGME in a manner which can be safely
|
||||
used by newer developers.
|
||||
|
||||
*2. Won't that create bottlenecks or performance issues?*
|
||||
|
||||
It might, but chances are these will be negligible for most
|
||||
implementations. Projects which truly needs greater optimisation
|
||||
should consider utilising the GPGME C code directly.
|
||||
|
||||
*3. I want (or need) to use a proprietary licence with my project, can I
|
||||
use this?*
|
||||
|
||||
Yes, when interacting with GPyGME as a stand alone API it is much the
|
||||
same as using any external API. That is, your code is simply
|
||||
communicating with another system and not integrating that system into
|
||||
your own code. Only when implementing your project in Python and
|
||||
importing the API as a module or library would your code then become
|
||||
subject to the LGPL 2.1+ (which might be fine anyway, consult with a
|
||||
lawyer for issues pertaining to your specific situation).
|
||||
|
||||
** Australian Developers and ITAR
|
||||
|
||||
*1. The current author/maintainer is in Australia, won't that cause
|
||||
problems with ITAR and the Wassenaar Arrangement?*
|
||||
|
||||
I'm not developing a cryptosystem or any encryption algorithms, I'm
|
||||
developing an API. So I should not be affected one way or the other
|
||||
by the provisions of the [[http://www.austlii.edu.au/au/legis/cth/num_act/dtca2012207/][Defence Trade Control Act 2012]] (DTCA),
|
||||
particularly with the 2015 amendments which have been passed by the
|
||||
Australian Parliament.
|
||||
|
||||
*2. What if you're wrong about that?*
|
||||
|
||||
That seems somewhat unlikely. The DSGL explicitly cites cryptography
|
||||
and encryption software as being in Part 2 of the [[http://www.austlii.edu.au/au/legis/cth/num_act/dtca2012207/s4.html#defense_trade_cooperation_munitions_list][Defence Trade
|
||||
Cooperation Munitions List]], but neither GPGME nor GPyGME are
|
||||
encryption software directly. Even GPGME simply provides a means of
|
||||
accessing what it refers to as encryption engines; currently the
|
||||
engines it supports are GnuPG and GpgSM. As long as I do not develop
|
||||
any of these encryption engines my work is not affected by the
|
||||
provisions of Australia's export controls, no matter how backward or
|
||||
useless I might consider those controls to be.
|
||||
|
||||
*3. In April 2016 the enforcement provisions of the DTCA come into
|
||||
force, could that change anything here?*
|
||||
|
||||
If the Minister of Defence makes a specific announcement in Parliament
|
||||
naming me and this work as falling under the purview of the DTCA, then
|
||||
yes; otherwise no.
|
||||
|
||||
The only other way it could happen is if the Defence definition of
|
||||
"public domain" changes or if exemptions based on something being in
|
||||
the public domain are removed.
|
||||
|
||||
*4. What assurances can you give that this will remain the case and
|
||||
everything will be fine?*
|
||||
|
||||
The Department of Defence's [[http://www.defence.gov.au/DECO/Default.asp][Defence Export Control Office]] (DECO)
|
||||
provides numerous resources to address concerns relating to this type
|
||||
of development. Included in this is the [[https://dsgl.defence.gov.au/pages/home.aspx][Defence and Strategic Goods
|
||||
List]] (DSGL) and its accompanying [[https://dsgl.defence.gov.au/pages/questionnaire.aspx][Activity Questionnaire]] and [[https://dsgl.defence.gov.au/pages/search.aspx][Online
|
||||
DSGL Search Tool]].
|
||||
|
||||
I completed the questionaire using the following conservative
|
||||
assumptions: that this work is either or both of supply and publishing
|
||||
of software and technology; and that the entire project really is in
|
||||
the category of Part 2 of the DSGL as a dual-use technology. Even
|
||||
though I am still pretty sure that only GPG itself and GpgSM would be
|
||||
placed in that category. Maybe libassuan, dirmngr and pinentry would
|
||||
too. Still, assuming that it all did, including GPGME and GPyGME, the
|
||||
results are clear that both supply and publication are fine. The
|
||||
[[http://dfat.gov.au/international-relations/security/sanctions/sanctions-regimes/Pages/sanctions-regimes.aspx][definitions of supply and publishing]], however, indicate that this work
|
||||
would likely only ever be considered publishing.
|
||||
|
||||
The reason for this is that all the existing software on which this
|
||||
work is built is what Defence classifies as being in the public
|
||||
domain. In this context that is not the same as the term is used for
|
||||
copyright and licensing, it means that the software and information is
|
||||
already freely available to anyone. Thus it would be the same for all
|
||||
or almost all free (libre) and open source software.
|
||||
|
||||
Only Australian cryptographers developing entirely new encryption
|
||||
algortithms are likely to be directly impacted by the provisions of
|
||||
the DCTA. I am very much /not/ in that category. Furthermore, any
|
||||
algorithm added to the specifications for GPG would need to pass
|
||||
through an international selection process anyway, by which stage it
|
||||
would be exempt from these types of restrictions because it would
|
||||
already be in the public domain as far as Australia's Department of
|
||||
Defence is concerned.
|
||||
|
||||
The results of my completed questionnaire are available [[Australian_DCTA_export_DECO_Questionnaire_Results.pdf][here]] (PDF) and
|
||||
a GPG signature of the file is [[Australian_DCTA_export_DECO_Questionnaire_Results.pdf.sig][here]]. The file is signed with my key
|
||||
(ID 0x321E4E2373590E5D).
|
||||
|
||||
With regards to current sanctions by Australia against any entity as
|
||||
referenced in that document and available [[http://dfat.gov.au/international-relations/security/sanctions/pages/sanctions.aspx][here]], my method of
|
||||
publication consists of uploading information to the GPG git server in
|
||||
Germany. Germany is not currently a sanctioned country by Australia,
|
||||
nor are any of the involved companies sanctioned separately. In fact,
|
||||
the only reference to Germany on Australia's list of sanctioned
|
||||
entities pertains to a number of individuals, mostly members of
|
||||
Al-Qaeda, currently serving time in German prisons or having been
|
||||
deported from Germany. Additional details on those sanctions can be
|
||||
found [[http://dfat.gov.au/international-relations/security/sanctions/Pages/consolidated-list.aspx][here]] and [[http://dfat.gov.au/international-relations/security/sanctions/sanctions-regimes/Pages/sanctions-regimes.aspx][here]].
|
63
lang/gpygme/docs/README.org
Normal file
63
lang/gpygme/docs/README.org
Normal file
@ -0,0 +1,63 @@
|
||||
* GPyGME
|
||||
|
||||
** Project Goal
|
||||
|
||||
Intended as both a replacement of the older PyME bindings for Python 2
|
||||
and Python 3, though it will only be implemented in Python 3. Some
|
||||
effort may be made to allow it to work as a module or series of
|
||||
modules in Python 2, but there are no guarantees.
|
||||
|
||||
GPyGME is intended to be the official API for third party (i.e.
|
||||
non-C) languages and bindings. While it should be able to be imported
|
||||
into any Python 3 code as a normal Python module or library, this is
|
||||
not the principal goal. The real value is in providing an API for
|
||||
everyone by providing a pseudo-REST style API. It is not actually a
|
||||
REST API because it is not purely web-based, though could be
|
||||
implemented that way (and almost certainly will be by many).
|
||||
|
||||
GPyGME will accept and respond with JSON data types to provide a
|
||||
method of interaction with GPGME with which most, if not all, modern
|
||||
application developers are familiar. Consequently the bindings ought
|
||||
to be usable by anyone for any purpose for which GPGME could meet the
|
||||
need.
|
||||
|
||||
** Project Name
|
||||
|
||||
GPyGME, with the first "G" being silent is pronounced the same way as
|
||||
[[https://en.wikipedia.org/wiki/Pygmy_peoples][pygme]]. It could be thought of as a diminutive form of GPGME with the
|
||||
ability to unlock just as much power.
|
||||
|
||||
** Licensing
|
||||
|
||||
GPyGME utilises the LGPL 2.1+ license, the same as GPGME itself. It
|
||||
may also include some tools or sample code licensed under the GPL 2.0
|
||||
or 3.0. Any such code will be marked clearly as such. Documentation
|
||||
will be covered by both the GPLv3+ as with the GPGME documentation and
|
||||
the [[http://creativecommons.org][Creative Commons]] [[http://creativecommons.org/licenses/by-sa/3.0/legalcode][Attribution-ShareAlike 3.0 Unported Public
|
||||
License]] (CC BY-SA 3.0) and the [[http://creativecommons.org/licenses/by-sa/4.0/legalcode][Attribution-ShareAlike 4.0
|
||||
International Public License]] (CC BY-SA 4.0).
|
||||
|
||||
Contributions to GPyGME require the same licensing and assurances be
|
||||
granted the project as are presently required by GPGME. Specifically
|
||||
that authors agree to license their contributions under both the LGPL
|
||||
version 2.1 and the GPL version 2.0; using the "or any later" clause
|
||||
in both cases. Documentation authors are required to include the
|
||||
matching both the Creative Commons BY-SA 3.0 and 4.0 licenses in
|
||||
addition to the GPL and LGPL.
|
||||
|
||||
While we do not request the copyright of these contributions be signed
|
||||
over to the Free Software Foundation, we do request developers and
|
||||
authors include a signed copy of the [[http://git.gnupg.org/cgi-bin/gitweb.cgi?p%3Dgpgme.git%3Ba%3Dblob_plain%3Bf%3Ddoc/DCO%3Bhb%3DHEAD][GPGME Developers' Certificate of
|
||||
Origin]] (DCO) as per the instructions provided with the GPGME
|
||||
documentation. See the [[http://git.gnupg.org/cgi-bin/gitweb.cgi?p%3Dgpgme.git%3Ba%3Dblob_plain%3Bf%3Ddoc/HACKING%3Bhb%3DHEAD][hacking]] document for more details.
|
||||
|
||||
Note that interacting with the GPyGME API as a stand alone interface
|
||||
(i.e. sending and receiving JSON data to it via a socket, command or
|
||||
other connection type) does not require conforming with either the GPL
|
||||
or LGPL licenses. Only when importing or integrating this code into
|
||||
your own application does that become a requirement.
|
||||
|
||||
** Feedback
|
||||
|
||||
GPyGME is written and maintained by [[mailto:ben@adversary.org][Ben McGinnes]], but discussion ought
|
||||
to be conducted on the [[https://lists.gnupg.org/mailman/listinfo/gnupg-devel][gnupg-devel]] mailing list.
|
1
lang/gpygme/requirements.txt
Normal file
1
lang/gpygme/requirements.txt
Normal file
@ -0,0 +1 @@
|
||||
cffi>=1.0.2
|
66
lang/gpygme/setup.py
Normal file
66
lang/gpygme/setup.py
Normal file
@ -0,0 +1,66 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
import os
|
||||
import sys
|
||||
|
||||
try:
|
||||
from setuptools import setup
|
||||
except ImportError:
|
||||
from distutils.core import setup
|
||||
|
||||
__author__ = 'Ben McGinnes <ben@adversary.org>'
|
||||
__version__ = '0.0.1'
|
||||
|
||||
packages = [
|
||||
'gpygme',
|
||||
'gpygme.gnupg',
|
||||
'gpygme.gpgsm'
|
||||
]
|
||||
|
||||
if sys.argv[-1] == 'publish':
|
||||
os.system('python setup.py sdist upload')
|
||||
sys.exit()
|
||||
|
||||
setup(
|
||||
name='GPyGME',
|
||||
version=__version__,
|
||||
install_requires=['cffi>=1.0.2'],
|
||||
author='Ben McGinnes',
|
||||
author_email='ben@adversary.org',
|
||||
license=open('COPYING.LESSER').read(),
|
||||
license=open('COPYING').read(),
|
||||
url='http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gpgme.git;a=summary',
|
||||
keywords='gpg gnupg openpgp api rest-like json encryption signing',
|
||||
description='Actively maintained, pure Python wrapper and API for the \
|
||||
GPGME cryptographic engine C API. Provides Python modules for Python \
|
||||
3 and a stand alone API for developers using any other language.',
|
||||
long_description=open('README.org').read() + '\n\n' +
|
||||
open('FAQ.org').read(),
|
||||
include_package_data=True,
|
||||
packages=packages,
|
||||
classifiers=[
|
||||
'Development Status :: 3 - Alpha',
|
||||
'Intended Audience :: Developers',
|
||||
'Natural Language :: English',
|
||||
'License :: OSI Approved :: LGPL 2.1+',
|
||||
'License :: OSI Approved :: GPL 2.0+',
|
||||
'Programming Language :: Python',
|
||||
'Programming Language :: Python :: 2.7',
|
||||
'Programming Language :: Python :: 3',
|
||||
'Programming Language :: Python :: 3.3',
|
||||
'Programming Language :: Python :: 3.4',
|
||||
'Topic :: Software Development :: Libraries :: Python Modules',
|
||||
'Topic :: Software Development :: API',
|
||||
'Topic :: Security :: Cryptography',
|
||||
'Topic :: Security :: Cryptography :: Encryption',
|
||||
'Topic :: Security :: Cryptography :: Decryption',
|
||||
'Topic :: Security :: Cryptography :: Digital Signing',
|
||||
'Topic :: Security :: Cryptography :: Digital Signature Validation',
|
||||
'Topic :: Security :: Cryptography :: Authentication',
|
||||
'Topic :: Internet'
|
||||
]
|
||||
# extras_require={
|
||||
# 'security': ['pyOpenSSL'],
|
||||
# 'library': ['cython']
|
||||
# },
|
||||
)
|
Loading…
Reference in New Issue
Block a user