expose tbs_certrequest_bytes and signature on CertificateSigningRequest
diff --git a/docs/x509/reference.rst b/docs/x509/reference.rst
index 35c00e6..0fea616 100644
--- a/docs/x509/reference.rst
+++ b/docs/x509/reference.rst
@@ -734,6 +734,25 @@
over the network to be signed by the certificate
authority.
+ .. attribute:: signature
+
+ .. versionadded:: 1.2
+
+ :type: bytes
+
+ The bytes of the certificate signing request's signature.
+
+ .. attribute:: tbs_certrequest_bytes
+
+ .. versionadded:: 1.2
+
+ :type: bytes
+
+ The DER encoded bytes payload (as defined by :rfc:`2986`) that is
+ hashed and then signed by the private key (corresponding to the public
+ key embedded in the CSR). This data may be used to validate the CSR
+ signature.
+
X.509 Revoked Certificate Object
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~