2 files changed, 48 insertions, 0 deletions
diff --git a/src/cryptography/x509/__init__.py b/src/cryptography/x509/__init__.py
index 51914e1e..38ae0f07 100644
--- a/src/cryptography/x509/__init__.py
+++ b/src/cryptography/x509/__init__.py
@@ -4,6 +4,7 @@
 
 from __future__ import absolute_import, division, print_function
 
+from cryptography.x509 import certificate_transparency
 from cryptography.x509.base import (
     Certificate, CertificateBuilder, CertificateRevocationList,
     CertificateRevocationListBuilder,
@@ -110,6 +111,7 @@ OID_OCSP = AuthorityInformationAccessOID.OCSP
 
 
 __all__ = [
+    "certificate_transparency",
     "load_pem_x509_certificate",
     "load_der_x509_certificate",
     "load_pem_x509_csr",
diff --git a/src/cryptography/x509/certificate_transparency.py b/src/cryptography/x509/certificate_transparency.py
new file mode 100644
index 00000000..d00fe812
--- /dev/null
+++ b/src/cryptography/x509/certificate_transparency.py
@@ -0,0 +1,46 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+from enum import Enum
+
+import six
+
+
+class LogEntryType(Enum):
+    X509_CERTIFICATE = 0
+    PRE_CERTIFICATE = 1
+
+
+class Version(Enum):
+    v1 = 0
+
+
+@six.add_metaclass(abc.ABCMeta)
+class SignedCertificateTimestamp(object):
+    @abc.abstractproperty
+    def version(self):
+        """
+        Returns the SCT version.
+        """
+
+    @abc.abstractproperty
+    def log_id(self):
+        """
+        Returns an identifier indicating which log this SCT is for.
+        """
+
+    @abc.abstractproperty
+    def timestamp(self):
+        """
+        Returns the timestamp for this SCT.
+        """
+
+    @abc.abstractproperty
+    def entry_type(self):
+        """
+        Returns whether this is an SCT for a certificate or pre-certificate.
+        """