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+.. hazmat::
+
+Diffie-Hellman key exchange
+===========================
+
+.. currentmodule:: cryptography.hazmat.primitives.asymmetric.dh
+
+
+.. class:: DHPrivateNumbers(x, public_numbers)
+
+    .. versionadded:: 0.8
+
+    The collection of integers that make up a Diffie-Hellman private key.
+
+    .. attribute:: public_numbers
+
+        :type: :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPublicNumbers`
+
+        The :class:`DHPublicNumbers` which makes up the DH public
+        key associated with this DH private key.
+
+    .. attribute:: x
+
+        :type: int
+
+        The private value.
+
+
+.. class:: DHPublicNumbers(parameters, y)
+
+    .. versionadded:: 0.8
+
+    The collection of integers that make up a Diffie-Hellman public key.
+
+     .. attribute:: parameter_numbers
+
+        :type: :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHParameterNumbers`
+
+        The parameters for this DH group.
+
+    .. attribute:: y
+
+        :type: int
+
+        The public value.
+
+
+.. class:: DHParameterNumbers(p, g)
+
+    .. versionadded:: 0.8
+
+    The collection of integers that define a Diffie-Hellman group.
+
+    .. attribute:: p
+
+        :type: int
+
+        The prime modulus value.
+
+    .. attribute:: g
+
+        :type: int
+
+        The generator value.