RSA encryption support
diff --git a/docs/hazmat/primitives/interfaces.rst b/docs/hazmat/primitives/interfaces.rst
index 3b837a0..c76582c 100644
--- a/docs/hazmat/primitives/interfaces.rst
+++ b/docs/hazmat/primitives/interfaces.rst
@@ -263,6 +263,23 @@
:returns:
:class:`~cryptography.hazmat.primitives.interfaces.AsymmetricVerificationContext`
+ .. method:: encrypt(plaintext, padding, backend)
+
+ .. versionadded:: 0.4
+
+ Encrypt data with the public key.
+
+ :param bytes plaintext: The plaintext to encrypt.
+
+ :param padding: An instance of a
+ :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricPadding`
+ provider.
+
+ :param backend: A
+ :class:`~cryptography.hazmat.backends.interfaces.RSABackend`
+ provider.
+
+ :return bytes: Encrypted data.
.. attribute:: modulus