RSA key docs
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+.. hazmat::
+
+RSA
+===
+
+.. currentmodule:: cryptography.hazmat.primitives.asymmetric.rsa
+
+`RSA`_ is a `public-key`_ algorithm for encrypting and signing messages.
+
+.. class:: RSAPrivateKey(p, q, private_exponent, public_exponent, modulus)
+
+ .. versionadded:: 0.2
+
+ An RSA private key is required for decryption and signing of messages.
+
+ Normally you do not need to directly construct private keys because you'll
+ be loading them from a file or generating them automatically.
+
+ This class conforms to the
+ :class:`~cryptography.hazmat.primitives.interfaces.RSAPrivateKey`
+ interface.
+
+ :raises TypeError: This is raised when the arguments are not all integers.
+
+ :raises ValueError: This is raised when the values of `private_exponent`,
+ `public_exponent` or `modulus` do not match the bounds
+ specified in `RFC 3447`_
+
+.. class:: RSAPublicKey(public_exponent, modulus)
+
+ .. versionadded:: 0.2
+
+ An RSA public key is required for encryption and verification of messages.
+
+ Normally you do not need to directly construct public keys because you'll
+ be loading them from a file, generating them automatically or receiving
+ them from a 3rd party.
+
+ This class conforms to the
+ :class:`~cryptography.hazmat.primitives.interfaces.RSAPublicKey`
+ interface.
+
+ :raises TypeError: This is raised when the arguments are not all integers.
+
+ :raises ValueError: This is raised when the values of `public_exponent` or
+ `modulus` do not match the bounds specified in
+ `RFC 3447`_
+
+.. _`RSA`: https://en.wikipedia.org/wiki/RSA_(cryptosystem)
+.. _`public-key`: https://en.wikipedia.org/wiki/Public-key_cryptography
+.. _`RFC 3447`: https://tools.ietf.org/html/rfc3447