RSA encryption support
diff --git a/docs/hazmat/backends/interfaces.rst b/docs/hazmat/backends/interfaces.rst
index 0349901..ef7c084 100644
--- a/docs/hazmat/backends/interfaces.rst
+++ b/docs/hazmat/backends/interfaces.rst
@@ -275,6 +275,18 @@
:class:`~cryptography.hazmat.primitives.interfaces.AsymmetricPadding`
provider.
+ .. method:: encrypt_rsa(public_key, plaintext, padding)
+
+ :param public_key: An instance of an
+ :class:`~cryptography.hazmat.primitives.interfaces.RSAPublicKey`
+ provider.
+
+ :param bytes plaintext: The plaintext to encrypt.
+
+ :param padding: An instance of an
+ :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricPadding`
+ provider.
+
.. class:: OpenSSLSerializationBackend