diff --git a/ndn-cpp/security/certificate/oid.hpp b/ndn-cpp/security/certificate/oid.hpp
new file mode 100644
index 0000000..bcbcfe9
--- /dev/null
+++ b/ndn-cpp/security/certificate/oid.hpp
@@ -0,0 +1,62 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/**
+ * Copyright (C) 2013 Regents of the University of California.
+ * @author: Yingdi Yu <yingdi@cs.ucla.edu>
+ * @author: Jeff Thompson <jefft0@remap.ucla.edu>
+ * See COPYING for copyright and distribution information.
+ */
+
+#ifndef NDN_OID_HPP
+#define	NDN_OID_HPP
+
+#include <vector>
+#include <string>
+
+namespace ndn {
+
+class OID {
+public:
+  OID () 
+  {
+  }
+    
+  OID(const std::string& oid);
+
+  OID(const std::vector<int>& oid)
+  : oid_(oid)
+  {
+  }
+
+  const std::vector<int> &
+  getIntegerList() const
+  {
+    return oid_;
+  }
+
+  void
+  setIntegerList(const std::vector<int>& value){
+    oid_ = value;
+  }
+
+  std::string 
+  toString();
+
+  bool operator == (const OID& oid)
+  {
+    return equal(oid);
+  }
+
+  bool operator != (const OID& oid)
+  {
+    return !equal(oid);
+  }
+  
+private:
+  bool equal(const OID& oid);
+
+  std::vector<int> oid_;
+};
+
+}
+
+#endif