1 files changed, 12 insertions, 0 deletions
diff --git a/src/cryptography/x509/base.py b/src/cryptography/x509/base.py
index 01eadfcb..ad561b94 100644
--- a/src/cryptography/x509/base.py
+++ b/src/cryptography/x509/base.py
@@ -117,6 +117,18 @@ class Certificate(object):
         Returns an Extensions object.
         """
 
+    @abc.abstractproperty
+    def signature(self):
+        """
+        Returns the signature bytes.
+        """
+
+    @abc.abstractproperty
+    def tbs_certificate_bytes(self):
+        """
+        Returns the tbsCertificate payload bytes as defined in RFC 5280.
+        """
+
     @abc.abstractmethod
     def __eq__(self, other):
         """