Experimental Python wrapper for OpenSSL. Do NOT use for anything serious. This code has not been properly tested/reviewed and is absolutely not production ready. For example, SslClient does not properly check SSL certificates.
Classes implemented in Python are part of the nassl namespace. This currently includes SslClient.py, OcspResponse.py and X509Certificate.py. Such classes are designed to provide a simpler, higher-level interface to perform SSL connections.
Classes implemented in C are part of the nassl._nassl namespace. They try to stay as close as possible to OpenSSL's API. In most cases, Python methods of such objects directly match the OpenSSL function with same name. For example the _nassl.SSL.read() Python method matches OpenSSL's SSL_read() function. These C classes should be considered internal.
Multiple build scripts are available. They will consecutively build Zlib, OpenSSL and nassl.
Regardless of the platform you're targeting, you will need to:
- Download OpenSSL 1.0.1e at https://www.openssl.org/source/openssl-1.0.1e.tar.gz and extract the content of the source package to nassl/openssl-1.0.1e
- Download Zlib at http://zlib.net/zlib-1.2.8.tar.gz and extract the content of the source package to nassl/zlib-1.2.8.
Build script for OS X 64 bits and Linux 32/64 bits. It was tested on OS X Mavericks, Ubuntu 13.04 and Debian 7. This is the easiest build script to use.
Build script for Windows 7 32 bits. It expects Python to be installed in C:\Python27_32.
Build script for Windows 7 64 bits. It expects Python to be installed in C:\Python27. This build script will crash after building OpenSSL but you can still manage to get a full build of nassl, if you can figure it out...
I'm the author of SSLyze, an SSL scanner written in Python: https://github.com/iSECPartners/sslyze. Scanning SSL servers requires access to low-level SSL functions within the OpenSSL API, for example to test for things like insecure renegotiation or session resumption.
None of the existing OpenSSL wrappers for Python (including ssl, M2Crypto and pyOpenSSL) expose the APIs that I need for SSLyze, so I had to write my own wrapper.
Copyright 2013 Alban Diquet
Licensed under the GPLv2; see ./LICENSE
Please contact me if this license doesn't work for you.
Alban Diquet - http://nabla-c0d3.github.io