Cryptography

~~~~~~~~~~~~~~~~~~

* Fix a bug where importing cryptography from multiple paths could cause
initialization to fail.


.. _v0-2:

~~~~~~~~~~~~~~~~

* Added ``commoncrypto``.
* Added initial ``commoncrypto``.
* Removed ``register_cipher_adapter`` method from ``CipherBackend``.
* Added support for the OpenSSL backend under Windows.
* Improved thread-safety for the OpenSSL backend.
* Fixed compilation on systems where OpenSSL's ``ec.h`` header is not
available, such as CentOS.
* Added :class:`~cryptography.hazmat.primitives.kdf.pbkdf2.PBKDF2HMAC`.
* Added :class:`~cryptography.hazmat.primitives.kdf.hkdf.HKDF`.
* Added ``multibackend``.
* Set default random for ``openssl`` to the OS random engine.
* Added :class:`~cryptography.hazmat.primitives.ciphers.algorithms.CAST5`
(CAST-128) support.


.. _v0-1:

~~~~~~~~~~~~~~~~

* Initial release.

.. _`as documented here`: https://docs.rs/openssl/latest/openssl/#automatic
.. _`main`: https://github.com/pyca/cryptography/
.. _`cffi`: https://cffi.readthedocs.io/