diff --git a/docs/hazmat/backends/interfaces.rst b/docs/hazmat/backends/interfaces.rst
index 218bc0c..14f72cf 100644
--- a/docs/hazmat/backends/interfaces.rst
+++ b/docs/hazmat/backends/interfaces.rst
@@ -29,11 +29,11 @@
         Check if a ``cipher`` and ``mode`` combination is supported by
         this backend.
 
-        :param cipher: An instance of a
-            :class:`~cryptography.hazmat.primitives.ciphers.CipherAlgorithm`
-            provider.
-        :param mode: An instance of a
-            :class:`~cryptography.hazmat.primitives.ciphers.modes.Mode` provider.
+        :param cipher: An instance of
+            :class:`~cryptography.hazmat.primitives.ciphers.CipherAlgorithm`.
+
+        :param mode: An instance of
+            :class:`~cryptography.hazmat.primitives.ciphers.modes.Mode`.
 
         :returns: ``True`` if the specified ``cipher`` and ``mode`` combination
             is supported by this backend, otherwise ``False``
@@ -46,11 +46,11 @@
         can be used for encrypting data with the symmetric ``cipher`` using
         the given ``mode``.
 
-        :param cipher: An instance of a
-            :class:`~cryptography.hazmat.primitives.ciphers.CipherAlgorithm`
-            provider.
-        :param mode: An instance of a
-            :class:`~cryptography.hazmat.primitives.ciphers.modes.Mode` provider.
+        :param cipher: An instance of
+            :class:`~cryptography.hazmat.primitives.ciphers.CipherAlgorithm`.
+
+        :param mode: An instance of
+            :class:`~cryptography.hazmat.primitives.ciphers.modes.Mode`.
 
         :returns:
             :class:`~cryptography.hazmat.primitives.ciphers.CipherContext`
@@ -65,11 +65,11 @@
         can be used for decrypting data with the symmetric ``cipher`` using
         the given ``mode``.
 
-        :param cipher: An instance of a
-            :class:`~cryptography.hazmat.primitives.ciphers.CipherAlgorithm`
-            provider.
-        :param mode: An instance of a
-            :class:`~cryptography.hazmat.primitives.ciphers.modes.Mode` provider.
+        :param cipher: An instance of
+            :class:`~cryptography.hazmat.primitives.ciphers.CipherAlgorithm`.
+
+        :param mode: An instance of
+            :class:`~cryptography.hazmat.primitives.ciphers.modes.Mode`.
 
         :returns:
             :class:`~cryptography.hazmat.primitives.ciphers.CipherContext`
@@ -90,9 +90,8 @@
 
         Check if the specified ``algorithm`` is supported by this backend.
 
-        :param algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`
-            provider.
+        :param algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`.
 
         :returns: ``True`` if the specified ``algorithm`` is supported by this
             backend, otherwise ``False``.
@@ -104,9 +103,8 @@
         :class:`~cryptography.hazmat.primitives.hashes.HashContext` that
         uses the specified ``algorithm`` to calculate a message digest.
 
-        :param algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`
-            provider.
+        :param algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`.
 
         :returns:
             :class:`~cryptography.hazmat.primitives.hashes.HashContext`
@@ -126,9 +124,8 @@
 
         Check if the specified ``algorithm`` is supported by this backend.
 
-        :param algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`
-            provider.
+        :param algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`.
 
         :returns: ``True`` if the specified ``algorithm`` is supported for HMAC
             by this backend, otherwise ``False``.
@@ -142,9 +139,8 @@
 
         :param bytes key: Secret key as ``bytes``.
 
-        :param algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`
-            provider.
+        :param algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`.
 
         :returns:
             :class:`~cryptography.hazmat.primitives.hashes.HashContext`
@@ -158,9 +154,9 @@
 
     .. method:: cmac_algorithm_supported(algorithm)
 
-        :param algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.ciphers.BlockCipherAlgorithm`
-            provider.
+        :param algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.ciphers.BlockCipherAlgorithm`.
+
         :return: Returns True if the block cipher is supported for CMAC by this backend
 
     .. method:: create_cmac_ctx(algorithm)
@@ -169,9 +165,8 @@
         :class:`~cryptography.hazmat.primitives.interfaces.MACContext` that
         uses the specified ``algorithm`` to calculate a message authentication code.
 
-        :param algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.ciphers.BlockCipherAlgorithm`
-            provider.
+        :param algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.ciphers.BlockCipherAlgorithm`.
 
         :returns:
             :class:`~cryptography.hazmat.primitives.interfaces.MACContext`
@@ -192,18 +187,16 @@
 
         Check if the specified ``algorithm`` is supported by this backend.
 
-        :param algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`
-            provider.
+        :param algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`.
 
         :returns: ``True`` if the specified ``algorithm`` is supported for
             PBKDF2 HMAC by this backend, otherwise ``False``.
 
     .. method:: derive_pbkdf2_hmac(self, algorithm, length, salt, iterations, key_material)
 
-        :param algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`
-            provider.
+        :param algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`.
 
         :param int length: The desired length of the derived key. Maximum is
             (2\ :sup:`32` - 1) * ``algorithm.digest_size``
@@ -235,9 +228,8 @@
         :param int key_size: The length in bits of the modulus. Should be
             at least 2048.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`.
 
         :raises ValueError: If the public_exponent is not valid.
 
@@ -245,9 +237,8 @@
 
         Check if the specified ``padding`` is supported by the backend.
 
-        :param padding: An instance of an
-            :class:`~cryptography.hazmat.primitives.asymmetric.padding.AsymmetricPadding`
-            provider.
+        :param padding: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.padding.AsymmetricPadding`.
 
         :returns: ``True`` if the specified ``padding`` is supported by this
             backend, otherwise ``False``.
@@ -266,7 +257,7 @@
         :param numbers: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateNumbers`.
 
-        :returns: A provider of
+        :returns: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`.
 
         :raises ValueError: This is raised when the values of ``p``, ``q``,
@@ -281,7 +272,7 @@
         :param numbers: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateNumbers`.
 
-        :returns: A provider of
+        :returns: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey`.
 
         :raises ValueError: This is raised when the values of
@@ -307,19 +298,16 @@
             support for larger key sizes specified in FIPS 186-3 and are still
             restricted to only the 1024-bit keys specified in FIPS 186-2.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameters`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameters`.
 
     .. method:: generate_dsa_private_key(parameters)
 
-        :param parameters: A
-            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameters`
-            provider.
+        :param parameters: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameters`.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`.
 
         :raises ValueError: This is raised if the key size is not one of 1024,
             2048, or 3072.
@@ -333,18 +321,16 @@
             support for larger key sizes specified in FIPS 186-3 and are still
             restricted to only the 1024-bit keys specified in FIPS 186-2.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`.
 
         :raises ValueError: This is raised if the key size is not supported
             by the backend.
 
     .. method:: dsa_hash_supported(algorithm)
 
-        :param algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`
-            provider.
+        :param algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`.
 
         :returns: ``True`` if the specified ``algorithm`` is supported by this
             backend, otherwise ``False``.
@@ -365,7 +351,7 @@
         :param numbers: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameterNumbers`.
 
-        :returns: A provider of
+        :returns: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameters`.
 
         :raises cryptography.exceptions.UnsupportedAlgorithm: This is raised
@@ -376,7 +362,7 @@
         :param numbers: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateNumbers`.
 
-        :returns: A provider of
+        :returns: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`.
 
         :raises cryptography.exceptions.UnsupportedAlgorithm: This is raised
@@ -387,7 +373,7 @@
         :param numbers: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicNumbers`.
 
-        :returns: A provider of
+        :returns: An instance of
             :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey`.
 
         :raises cryptography.exceptions.UnsupportedAlgorithm: This is raised
@@ -400,49 +386,41 @@
 
     .. method:: elliptic_curve_supported(curve)
 
-        :param curve: An instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurve`
-            provider.
+        :param curve: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurve`.
 
         :returns: True if the elliptic curve is supported by this backend.
 
     .. method:: elliptic_curve_signature_algorithm_supported(signature_algorithm, curve)
 
-        :param signature_algorithm: An instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurveSignatureAlgorithm`
-            provider.
+        :param signature_algorithm: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurveSignatureAlgorithm`.
 
-        :param curve: An instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurve`
-            provider.
+        :param curve: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurve`.
 
         :returns: True if the signature algorithm and curve are supported by this backend.
 
     .. method:: generate_elliptic_curve_private_key(curve)
 
-        :param curve: An instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurve`
-            provider.
+        :param curve: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurve`.
 
     .. method:: load_elliptic_curve_private_numbers(numbers)
 
-        :param numbers: An instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateNumbers`
-            provider.
+        :param numbers: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateNumbers`.
 
-        :returns: An instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey`
-            provider.
+        :returns: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey`.
 
     .. method:: load_elliptic_curve_public_numbers(numbers)
 
-        :param numbers: An instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers`
-            provider.
+        :param numbers: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers`.
 
-        :returns: An instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey`
-            provider.
+        :returns: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey`.
 
 .. class:: PEMSerializationBackend
 
@@ -608,29 +586,25 @@
 
         :param int key_size: The bit length of the prime modulus to generate.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHParameters`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHParameters`.
 
         :raises ValueError: If ``key_size`` is not at least 512.
 
     .. method:: generate_dh_private_key(parameters)
 
-        :param parameters: A
-            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHParameters`
-            provider.
+        :param parameters: An instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHParameters`.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKey`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKey`.
 
     .. method:: generate_dh_private_key_and_parameters(self, key_size)
 
         :param int key_size: The bit length of the prime modulus to generate.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKey`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKey`.
 
         :raises ValueError: If ``key_size`` is not at least 512.
 
@@ -640,9 +614,8 @@
             :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateNumbers`
             instance.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKey`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKey`.
 
         :raises cryptography.exceptions.UnsupportedAlgorithm: This is raised
             when any backend specific criteria are not met.
@@ -653,9 +626,8 @@
             :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPublicNumbers`
             instance.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPublicKey`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPublicKey`.
 
         :raises cryptography.exceptions.UnsupportedAlgorithm: This is raised
             when any backend specific criteria are not met.
@@ -666,9 +638,8 @@
             :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHParameterNumbers`
             instance.
 
-        :return: A new instance of a
-            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHParameters`
-            provider.
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHParameters`.
 
         :raises cryptography.exceptions.UnsupportedAlgorithm: This is raised
             when any backend specific criteria are not met.