diff --git a/CimWriter/CimWriter.dll b/CimWriter/CimWriter.dll
new file mode 100644
index 0000000..8af53cc
Binary files /dev/null and b/CimWriter/CimWriter.dll differ
diff --git a/CimWriter/LICENSE.pdf b/CimWriter/LICENSE.pdf
new file mode 100644
index 0000000..cdbcaa5
Binary files /dev/null and b/CimWriter/LICENSE.pdf differ
diff --git a/CimWriter/README.txt b/CimWriter/README.txt
new file mode 100644
index 0000000..41b6ba3
--- /dev/null
+++ b/CimWriter/README.txt
@@ -0,0 +1,5 @@
+CimWriter.dll is used to create integrity checked CIM files. These are used to ensure that
+container image layers are genuine.
+
+Changes were made to CimFS.dll to support the Confidential WCOW project. For internal reasons
+these changes are not yet in a suitable Windows OS release. As a result we have to supply the dll here.
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
index 49d2166..787bf1c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,3 +1,5 @@
+This license does not apply to CimWriter directory, see CimWriter/LICENSE.pdf regarding CimWriter.dll
+
 The MIT License (MIT)
 
 Copyright (c) 2015 Microsoft