From 98429643e0453b6ad7f9daa872cccad5f410149a Mon Sep 17 00:00:00 2001
From: Paul Kehrer <paul.l.kehrer@gmail.com>
Date: Sun, 22 Jun 2014 16:37:21 -0600
Subject: add DSAWithNumbers subinterfaces

---
 cryptography/hazmat/primitives/interfaces.py | 27 +++++++++++++++
 docs/hazmat/primitives/interfaces.rst        | 51 ++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+)

diff --git a/cryptography/hazmat/primitives/interfaces.py b/cryptography/hazmat/primitives/interfaces.py
index dd901aae..c375ce9a 100644
--- a/cryptography/hazmat/primitives/interfaces.py
+++ b/cryptography/hazmat/primitives/interfaces.py
@@ -296,6 +296,15 @@ class DSAParameters(object):
         """
 
 
+@six.add_metaclass(abc.ABCMeta)
+class DSAParametersWithNumbers(DSAParameters):
+    @abc.abstractmethod
+    def parameter_numbers(self):
+        """
+        Returns a DSAParameterNumbers.
+        """
+
+
 @six.add_metaclass(abc.ABCMeta)
 class DSAPrivateKey(object):
     @abc.abstractproperty
@@ -329,6 +338,15 @@ class DSAPrivateKey(object):
         """
 
 
+@six.add_metaclass(abc.ABCMeta)
+class DSAPrivateKeyWithNumbers(DSAPrivateKey):
+    @abc.abstractmethod
+    def private_numbers(self):
+        """
+        Returns a DSAPrivateNumbers.
+        """
+
+
 @six.add_metaclass(abc.ABCMeta)
 class DSAPublicKey(object):
     @abc.abstractproperty
@@ -350,6 +368,15 @@ class DSAPublicKey(object):
         """
 
 
+@six.add_metaclass(abc.ABCMeta)
+class DSAPublicKeyWithNumbers(DSAPublicKey):
+    @abc.abstractmethod
+    def public_numbers(self):
+        """
+        Returns a DSAPublicNumbers.
+        """
+
+
 @six.add_metaclass(abc.ABCMeta)
 class AsymmetricSignatureContext(object):
     @abc.abstractmethod
diff --git a/docs/hazmat/primitives/interfaces.rst b/docs/hazmat/primitives/interfaces.rst
index 029c4c1f..b8aca0c2 100644
--- a/docs/hazmat/primitives/interfaces.rst
+++ b/docs/hazmat/primitives/interfaces.rst
@@ -287,6 +287,23 @@ Asymmetric interfaces
         in the DSA signing and verification processes. Alias for :attr:`generator`.
 
 
+.. class:: DSAParametersWithNumbers
+
+    .. versionadded:: 0.5
+
+    Extends :class:`DSAParameters`.
+
+    .. method:: parameter_numbers()
+
+        Create a
+        :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameterNumbers`
+        object.
+
+        :returns: A
+            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameterNumbers`
+            instance.
+
+
 .. class:: DSAPrivateKey
 
     .. versionadded:: 0.3
@@ -341,6 +358,23 @@ Asymmetric interfaces
         The public key.
 
 
+.. class:: DSAPrivateKeyWithNumbers
+
+    .. versionadded:: 0.5
+
+    Extends :class:`DSAPrivateKey`.
+
+    .. method:: private_numbers()
+
+        Create a
+        :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateNumbers`
+        object.
+
+        :returns: A
+            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateNumbers`
+            instance.
+
+
 .. class:: DSAPublicKey
 
     .. versionadded:: 0.3
@@ -387,6 +421,23 @@ Asymmetric interfaces
             :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricVerificationContext`
 
 
+.. class:: DSAPublicKeyWithNumbers
+
+    .. versionadded:: 0.5
+
+    Extends :class:`DSAPublicKey`.
+
+    .. method:: private_numbers()
+
+        Create a
+        :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicNumbers`
+        object.
+
+        :returns: A
+            :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicNumbers`
+            instance.
+
+
 .. class:: EllipticCurve
 
     .. versionadded:: 0.5
-- 
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