diff --git a/cryptography/hazmat/primitives/interfaces.py b/cryptography/hazmat/primitives/interfaces.py
index e70338b..4d92ef2 100644
--- a/cryptography/hazmat/primitives/interfaces.py
+++ b/cryptography/hazmat/primitives/interfaces.py
@@ -185,6 +185,12 @@
 
 @six.add_metaclass(abc.ABCMeta)
 class RSAPrivateKey(object):
+    @abc.abstractmethod
+    def signer(self, padding, algorithm, backend):
+        """
+        Returns an AsymmetricSignatureContext used for signing data.
+        """
+
     @abc.abstractproperty
     def modulus(self):
         """
@@ -270,6 +276,12 @@
 
 @six.add_metaclass(abc.ABCMeta)
 class RSAPublicKey(object):
+    @abc.abstractmethod
+    def verifier(self, signature, padding, algorithm, backend):
+        """
+        Returns an AsymmetricVerificationContext used for verifying signatures.
+        """
+
     @abc.abstractproperty
     def modulus(self):
         """
diff --git a/docs/hazmat/primitives/interfaces.rst b/docs/hazmat/primitives/interfaces.rst
index cdb925e..f4fb8de 100644
--- a/docs/hazmat/primitives/interfaces.rst
+++ b/docs/hazmat/primitives/interfaces.rst
@@ -112,6 +112,27 @@
 
     An `RSA`_ private key.
 
+    .. method:: signer(padding, algorithm, backend)
+
+        .. versionadded:: 0.3
+
+        Sign data which can be verified later by others using the public key.
+
+        :param padding: An instance of a
+            :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricPadding`
+            provider.
+
+        :param algorithm: An instance of a
+            :class:`~cryptography.hazmat.primitives.interfaces.HashAlgorithm`
+            provider.
+
+        :param backend: A
+            :class:`~cryptography.hazmat.backends.interfaces.RSABackend`
+            provider.
+
+        :returns:
+            :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricSignatureContext`
+
     .. method:: public_key()
 
         :return: :class:`~cryptography.hazmat.primitives.interfaces.RSAPublicKey`
@@ -200,6 +221,31 @@
 
     An `RSA`_ public key.
 
+    .. method:: verifier(signature, padding, algorithm, backend)
+
+        .. versionadded:: 0.3
+
+        Verify data was signed by the private key associated with this public
+        key.
+
+        :param bytes signature: The signature to verify.
+
+        :param padding: An instance of a
+            :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricPadding`
+            provider.
+
+        :param algorithm: An instance of a
+            :class:`~cryptography.hazmat.primitives.interfaces.HashAlgorithm`
+            provider.
+
+        :param backend: A
+            :class:`~cryptography.hazmat.backends.interfaces.RSABackend`
+            provider.
+
+        :returns:
+            :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricVerificationContext`
+
+
     .. attribute:: modulus
 
         :type: int