time to remove commoncrypto, fare thee well (#3551)

* time to remove commoncrypto, fare thee well

* remove even more

* update the changelog

* remove more things

* don't need this function

* remove CAST5 CTR tests since that was only supported in commoncrypto

* assert a thing

6 files changed, 0 insertions, 80 deletions

diff --git a/docs/development/getting-started.rst b/docs/development/getting-started.rst
index 29d01c31..66173d40 100644
--- a/docs/development/getting-started.rst
+++ b/docs/development/getting-started.rst
@@ -86,20 +86,6 @@ You may not have all the required Python versions installed, in which case you
 will see one or more ``InterpreterNotFound`` errors.
 
 
-Explicit backend selection
---------------------------
-
-While testing you may want to run tests against a subset of the backends that
-cryptography supports. Explicit backend selection can be done via the
-``--backend`` flag. This flag should be passed to ``py.test`` with a comma
-delimited list of backend names.
-
-
-.. code-block:: console
-
-    $ tox -- --backend=openssl
-    $ py.test --backend=openssl,commoncrypto
-
 Building documentation
 ----------------------
 
diff --git a/docs/hazmat/backends/commoncrypto.rst b/docs/hazmat/backends/commoncrypto.rst
deleted file mode 100644
index e976b6f7..00000000
--- a/docs/hazmat/backends/commoncrypto.rst
+++ /dev/null
@@ -1,30 +0,0 @@
-.. hazmat::
-
-CommonCrypto backend
-====================
-
-The `CommonCrypto`_ C library provided by Apple on macOS and iOS. The
-CommonCrypto backend is only supported on macOS versions 10.8 and above.
-
-.. currentmodule:: cryptography.hazmat.backends.commoncrypto.backend
-
-.. versionadded:: 0.2
-
-.. data:: cryptography.hazmat.backends.commoncrypto.backend
-
-    This is the exposed API for the CommonCrypto backend.
-
-    It implements the following interfaces:
-
-    * :class:`~cryptography.hazmat.backends.interfaces.CipherBackend`
-    * :class:`~cryptography.hazmat.backends.interfaces.HashBackend`
-    * :class:`~cryptography.hazmat.backends.interfaces.HMACBackend`
-    * :class:`~cryptography.hazmat.backends.interfaces.PBKDF2HMACBackend`
-
-    It has one additional public attribute.
-
-    .. attribute:: name
-
-        The string name of this backend: ``"commoncrypto"``
-
-.. _`CommonCrypto`: https://developer.apple.com/library/content/documentation/Security/Conceptual/cryptoservices/GeneralPurposeCrypto/GeneralPurposeCrypto.html#//apple_ref/doc/uid/TP40011172-CH9-SW10
diff --git a/docs/hazmat/backends/index.rst b/docs/hazmat/backends/index.rst
index aec7a1e0..56d18901 100644
--- a/docs/hazmat/backends/index.rst
+++ b/docs/hazmat/backends/index.rst
@@ -31,6 +31,5 @@ Individual backends
     :maxdepth: 1
 
     openssl
-    commoncrypto
     multibackend
     interfaces
diff --git a/docs/hazmat/backends/interfaces.rst b/docs/hazmat/backends/interfaces.rst
index 4f15d5c6..e3c67474 100644
--- a/docs/hazmat/backends/interfaces.rst
+++ b/docs/hazmat/backends/interfaces.rst
@@ -22,7 +22,6 @@ A specific ``backend`` may provide one or more of these interfaces.
     The following backends implement this interface:
 
     * :doc:`/hazmat/backends/openssl`
-    * :doc:`/hazmat/backends/commoncrypto`
 
     .. method:: cipher_supported(cipher, mode)
 
@@ -84,7 +83,6 @@ A specific ``backend`` may provide one or more of these interfaces.
     The following backends implement this interface:
 
     * :doc:`/hazmat/backends/openssl`
-    * :doc:`/hazmat/backends/commoncrypto`
 
     .. method:: hash_supported(algorithm)
 
@@ -118,7 +116,6 @@ A specific ``backend`` may provide one or more of these interfaces.
     The following backends implement this interface:
 
     * :doc:`/hazmat/backends/openssl`
-    * :doc:`/hazmat/backends/commoncrypto`
 
     .. method:: hmac_supported(algorithm)
 
@@ -181,7 +178,6 @@ A specific ``backend`` may provide one or more of these interfaces.
     The following backends implement this interface:
 
     * :doc:`/hazmat/backends/openssl`
-    * :doc:`/hazmat/backends/commoncrypto`
 
     .. method:: pbkdf2_hmac_supported(algorithm)
 
diff --git a/docs/hazmat/bindings/commoncrypto.rst b/docs/hazmat/bindings/commoncrypto.rst
deleted file mode 100644
index 63e734c6..00000000
--- a/docs/hazmat/bindings/commoncrypto.rst
+++ /dev/null
@@ -1,30 +0,0 @@
-.. hazmat::
-
-CommonCrypto binding
-====================
-
-.. currentmodule:: cryptography.hazmat.bindings.commoncrypto.binding
-
-.. versionadded:: 0.2
-
-These are `CFFI`_ bindings to the `CommonCrypto`_ C library. It is only
-available on macOS versions 10.8 and above.
-
-.. class:: cryptography.hazmat.bindings.commoncrypto.binding.Binding()
-
-    This is the exposed API for the CommonCrypto bindings. It has two public
-    attributes:
-
-    .. attribute:: ffi
-
-        This is a ``cffi.FFI`` instance. It can be used to allocate and
-        otherwise manipulate CommonCrypto structures.
-
-    .. attribute:: lib
-
-        This is a ``cffi`` library. It can be used to call CommonCrypto
-        functions, and access constants.
-
-
-.. _`CFFI`: https://cffi.readthedocs.io
-.. _`CommonCrypto`: https://developer.apple.com/library/content/documentation/Security/Conceptual/cryptoservices/GeneralPurposeCrypto/GeneralPurposeCrypto.html#//apple_ref/doc/uid/TP40011172-CH9-SW10
diff --git a/docs/hazmat/bindings/index.rst b/docs/hazmat/bindings/index.rst
index 8075be14..655f4620 100644
--- a/docs/hazmat/bindings/index.rst
+++ b/docs/hazmat/bindings/index.rst
@@ -20,4 +20,3 @@ Individual bindings
     :maxdepth: 1
 
     openssl
-    commoncrypto