Python wrapper module around the OpenSSL library

pyOpenSSL is a set of Python bindings for OpenSSL.  It includes some low-level
cryptography APIs but is primarily focused on providing an API for using the
TLS protocol from Python.

pyOpenSSL is now a pure-Python project with a dependency on a new project,
cryptography (<https://github.com/pyca/cryptography>), which provides (among
other things) a cffi-based interface to OpenSSL.