diff --git a/KeyStorage.h b/KeyStorage.h
index 72ddfc4..1980acb 100644
--- a/KeyStorage.h
+++ b/KeyStorage.h
@@ -43,7 +43,8 @@
 enum class KeyType {
     DE_SYS,
     DE_USER,
-    CE_USER
+    CE_USER,
+    ME,
 };
 
 extern const KeyAuthentication kEmptyAuthentication;