edan_f0/docs/source/releases/v0.5.2.rst

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Oscar 0.5.2 release notes
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This is Oscar 0.5.2, a security release for Oscar 0.5.

Insecure use of ``SECRET_KEY`` in basket cookie
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For anonymous users, the basket ID is stored in a cookie.  Previously, the
value was signed using a simple CRC32 hash using the ``SECRET_KEY``.
However, a good rule of thumb is to never roll your own encryption, and it is
possible that this method weakens the security of the ``SECRET_KEY``.

`The fix`_ uses Django's cryptographic signing functionality to sign the cookie
in a more secure manner.

.. _`The fix`: https://github.com/django-oscar/django-oscar/commit/876f723