2 files changed, 27 insertions, 0 deletions
diff --git a/src/cryptography/hazmat/backends/openssl/x509.py b/src/cryptography/hazmat/backends/openssl/x509.py
index 3afbc40f..8fa43ea8 100644
--- a/src/cryptography/hazmat/backends/openssl/x509.py
+++ b/src/cryptography/hazmat/backends/openssl/x509.py
@@ -818,6 +818,21 @@ class _CertificateRevocationList(object):
         self._backend.openssl_assert(lu != self._backend._ffi.NULL)
         return self._backend._parse_asn1_time(lu)
 
+    @property
+    def signature(self):
+        return self._backend._asn1_string_to_bytes(self._x509_crl.signature)
+
+    @property
+    def tbs_certlist_bytes(self):
+        pp = self._backend._ffi.new("unsigned char **")
+        # the X509_CRL_INFO struct holds the tbsCertList data
+        res = self._backend._lib.i2d_X509_CRL_INFO(self._x509_crl.crl, pp)
+        self._backend.openssl_assert(res > 0)
+        pp = self._backend._ffi.gc(
+            pp, lambda pointer: self._backend._lib.OPENSSL_free(pointer[0])
+        )
+        return self._backend._ffi.buffer(pp[0], res)[:]
+
     def _revoked_certificates(self):
         revoked = self._backend._lib.X509_CRL_get_REVOKED(self._x509_crl)
         self._backend.openssl_assert(revoked != self._backend._ffi.NULL)
diff --git a/src/cryptography/x509/base.py b/src/cryptography/x509/base.py
index ad561b94..6c2386f6 100644
--- a/src/cryptography/x509/base.py
+++ b/src/cryptography/x509/base.py
@@ -194,6 +194,18 @@ class CertificateRevocationList(object):
         Returns an Extensions object containing a list of CRL extensions.
         """
 
+    @abc.abstractproperty
+    def signature(self):
+        """
+        Returns the signature bytes.
+        """
+
+    @abc.abstractproperty
+    def tbs_certlist_bytes(self):
+        """
+        Returns the tbsCertList payload bytes as defined in RFC 5280.
+        """
+
     @abc.abstractmethod
     def __eq__(self, other):
         """