move KDF interface

1 files changed, 2 insertions, 40 deletions

diff --git a/docs/hazmat/primitives/interfaces.rst b/docs/hazmat/primitives/interfaces.rst
index 6029d1a9..f58d324d 100644
--- a/docs/hazmat/primitives/interfaces.rst
+++ b/docs/hazmat/primitives/interfaces.rst
@@ -47,46 +47,8 @@ In 0.8 the EC key interfaces were moved to the
 Key derivation functions
 ------------------------
 
-.. class:: KeyDerivationFunction
-
-    .. versionadded:: 0.2
-
-    .. method:: derive(key_material)
-
-        :param bytes key_material: The input key material. Depending on what
-                                   key derivation function you are using this
-                                   could be either random bytes, or a user
-                                   supplied password.
-        :return: The new key.
-        :raises cryptography.exceptions.AlreadyFinalized: This is raised when
-                                                          :meth:`derive` or
-                                                          :meth:`verify` is
-                                                          called more than
-                                                          once.
-
-        This generates and returns a new key from the supplied key material.
-
-    .. method:: verify(key_material, expected_key)
-
-        :param bytes key_material: The input key material. This is the same as
-                                   ``key_material`` in :meth:`derive`.
-        :param bytes expected_key: The expected result of deriving a new key,
-                                   this is the same as the return value of
-                                   :meth:`derive`.
-        :raises cryptography.exceptions.InvalidKey: This is raised when the
-                                                    derived key does not match
-                                                    the expected key.
-        :raises cryptography.exceptions.AlreadyFinalized: This is raised when
-                                                          :meth:`derive` or
-                                                          :meth:`verify` is
-                                                          called more than
-                                                          once.
-
-        This checks whether deriving a new key from the supplied
-        ``key_material`` generates the same key as the ``expected_key``, and
-        raises an exception if they do not match. This can be used for
-        something like checking whether a user's password attempt matches the
-        stored derived key.
+In 0.8 the key derivation function interface was moved to the
+:mod:`cryptography.hazmat.primitives.kdf` module.
 
 
 `Message Authentication Code`_