[egenix-users] ANN: eGenix pyOpenSSL Distribution 0.13.6

eGenix Team: M.-A. Lemburg info at egenix.com
Tue Nov 11 10:05:54 CET 2014


                   eGenix.com pyOpenSSL Distribution

                             Version 0.13.6

             An easy-to-install and easy-to-use distribution
             of the pyOpenSSL Python interface for OpenSSL -
            available for Windows, Mac OS X and Unix platforms

This announcement is also available on our web-site for online reading:


The eGenix.com pyOpenSSL Distribution includes everything you need to
get started with SSL in Python.

It comes with an easy-to-use installer that includes the most recent
OpenSSL library versions in pre-compiled form, making your application
independent of OS provided OpenSSL libraries:


pyOpenSSL is an open-source Python add-on that allows writing SSL/TLS-
aware network applications as well as certificate management tools:


OpenSSL is an open-source implementation of the SSL/TLS protocol:



This new release of the eGenix.com pyOpenSSL Distribution updates the
included OpenSSL version to the latest OpenSSL 1.0.1h version and adds
a few more context options:

New in OpenSSL

 * Reenabled the SSLv2 support in the bundled OpenSSL libraries which
   we had removed in 0.13.5, since removing the SSLv2 symbols resulted
   in too many compatibility problems with existing code such as e.g.

    >>> import OpenSSL
    >>> import ssl
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "ssl.py", line 60, in <module>
        import _ssl
    ImportError: _ssl.so: undefined symbol: SSLv2_method

   The ImportError is the result of using the 0.13.5 version of the
   OpenSSL libs with an ssl module which was compiled against a system
   version with SSLv2 support, effectively making the ssl module

   To protect against SSLv2 and SSLv3 downgrade attacks, please make
   sure you setup the SSL context to disallow using SSLv2 and SSLv3,

    context = SSL.Context(SSL.SSLv23_METHOD)
    context.set_options(SSL.OP_NO_SSLv2 | SSL.OP_NO_SSLv3)

New in pyOpenSSL

 * OpenSSL.__version__ is now updated to the distribution version
   rather than left at "0.13" as it was in previous releases. It now
   shows "0.13.6" for this release.

 * Emphasized on the need to "import OpenSSL" early to prevent Python
   from loading the system OpenSSL libraries instead of the embedded
   ones. Be sure to read the section Loading the embedded OpenSSL
   Libraries of the documentation for details on how to make sure that
   the embedded libraries are loaded:


Please see the product changelog for the full set of changes:


pyOpenSSL / OpenSSL Binaries Included

In addition to providing sources, we make binaries available that
include both pyOpenSSL and the necessary OpenSSL libraries for all
supported platforms: Windows x86 and x64, Linux x86 and x64, Mac OS X
PPC, x86 and x64.

We've also added egg-file distribution versions of our eGenix.com
pyOpenSSL Distribution for Windows, Linux and Mac OS X to the
available download options. These make setups using e.g. zc.buildout
and other egg-file based installers a lot easier.


The download archives and instructions for installing the package can
be found at:



Before installing this version of pyOpenSSL, please make sure that
you uninstall any previously installed pyOpenSSL version. Otherwise,
you could end up not using the included OpenSSL libs.


Commercial support for these packages is available from eGenix.com.
Please see


for details about our support offerings.


For more information about the eGenix pyOpenSSL Distribution, licensing
and download instructions, please visit our web-site or write to
sales at egenix.com.

Marc-Andre Lemburg

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