eGenix pyOpenSSL Distribution GA

eGenix pyOpenSSL Distribution GA

eGenix is pleased to announce the eGenix pyOpenSSL Distribution for Python 2.4 - 2.7, with source and binaries for Windows, Linux and Mac OS X.


The 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:

>>>   eGenix pyOpenSSL Distribution Page

pyOpenSSL is an open-source Python add-on that allows writing SSL-aware networking applications as as certificate managment tools. It uses the OpenSSL library as performant and robust SSL engine.

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


This new release of the pyOpenSSL Distribution This new release of the 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

  • Updated included OpenSSL libraries from OpenSSL 1.0.1h to 1.0.1i. See for a complete list of changes. Most fixes apply to the OpenSSL DTLS implementation, which pyOpenSSL currently does not support. The following fix is relevant for pyOpenSSL applications:
  • CVE-2014-3511: A flaw in the OpenSSL TLS server code allows a man-in-the-middle attacker to force a downgrade to TLS 1.0.

New in eGenix pyOpenSSL

  • Compiled pyOpenSSL with OPENSSL_LOAD_CONF to have the OpenSSL libs automatically load the openssl.cnf configuration file. This allows easy configuration of additional OpenSSL parameters and defaults, locations of certificate files, hardware engines, etc. without having to change the application code. Please see the documentation for details.
  • Updated the included CA root certificate bundles to Mozilla's 2014-07-15 update.

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 have also added .egg-file distribution versions of our 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.


Please visit the eGenix pyOpenSSL Distribution page for downloads, instructions on installation and documentation of the package.


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.

More Information

For more information on the eGenix pyOpenSSL Distribution, licensing and download instructions, please write to

Enjoy !

Marc-Andre Lemburg,

Published: 2014-08-14