remove multibackend (#3555)
* remove multibackend
* oops
* goodbye pointless tests
diff --git a/docs/hazmat/backends/index.rst b/docs/hazmat/backends/index.rst
index 56d1890..a8a1ff3 100644
--- a/docs/hazmat/backends/index.rst
+++ b/docs/hazmat/backends/index.rst
@@ -8,15 +8,11 @@
.. currentmodule:: cryptography.hazmat.backends
-``cryptography`` aims to support multiple backends to ensure it can provide
-the widest number of supported cryptographic algorithms as well as supporting
-platform specific implementations.
+``cryptography`` was originally designed to support multiple backends, but
+this design has been deprecated.
You can get the default backend by calling :func:`~default_backend`.
-The default backend will change over time as we implement new backends and
-the libraries we use in those backends changes.
-
.. function:: default_backend()
@@ -31,5 +27,4 @@
:maxdepth: 1
openssl
- multibackend
interfaces
diff --git a/docs/hazmat/backends/multibackend.rst b/docs/hazmat/backends/multibackend.rst
deleted file mode 100644
index 0aae04a..0000000
--- a/docs/hazmat/backends/multibackend.rst
+++ /dev/null
@@ -1,45 +0,0 @@
-.. hazmat::
-
-MultiBackend
-============
-
-.. currentmodule:: cryptography.hazmat.backends.multibackend
-
-.. class:: MultiBackend(backends)
-
- .. versionadded:: 0.2
-
- This class allows you to combine multiple backends into a single backend
- that offers the combined features of all of its constituents.
-
- .. testsetup::
-
- from cryptography import utils
- from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
- from cryptography.hazmat.backends.interfaces import HashBackend
- from cryptography.hazmat.backends.openssl.backend import backend as backend2
-
- @utils.register_interface(HashBackend)
- class DummyHashBackend(object):
- def hash_supported(self, algorithm):
- return False
-
- def create_hash_ctx(self, algorithm):
- raise UnsupportedAlgorithm("", _Reasons.UNSUPPORTED_HASH)
-
- backend1 = DummyHashBackend()
-
- .. doctest::
-
- >>> from cryptography.hazmat.backends.multibackend import MultiBackend
- >>> from cryptography.hazmat.primitives import hashes
- >>> backend1.hash_supported(hashes.SHA256())
- False
- >>> backend2.hash_supported(hashes.SHA256())
- True
- >>> multi_backend = MultiBackend([backend1, backend2])
- >>> multi_backend.hash_supported(hashes.SHA256())
- True
-
- :param backends: A ``list`` of backend objects. Backends are checked for
- feature support in the order they appear in this list.