diff --git a/helper/ndn-stack-helper.cpp b/helper/ndn-stack-helper.cpp
index b548844..bd2413e 100644
--- a/helper/ndn-stack-helper.cpp
+++ b/helper/ndn-stack-helper.cpp
@@ -45,6 +45,7 @@
 
 #include "ndn-face-container.hpp"
 #include "ndn-stack-helper.hpp"
+#include "utils/dummy-keychain.hpp"
 
 #include <limits>
 #include <map>
@@ -76,6 +77,13 @@
 {
 }
 
+KeyChain&
+StackHelper::getKeyChain()
+{
+  static ::ndn::DummyKeyChain keyChain;
+  return keyChain;
+}
+
 void
 StackHelper::SetStackAttributes(const std::string& attr1, const std::string& value1,
                                 const std::string& attr2, const std::string& value2,
diff --git a/helper/ndn-stack-helper.hpp b/helper/ndn-stack-helper.hpp
index d32769c..afc43dc 100644
--- a/helper/ndn-stack-helper.hpp
+++ b/helper/ndn-stack-helper.hpp
@@ -292,6 +292,9 @@
   void
   SetDefaultRoutes(bool needSet);
 
+  static KeyChain&
+  getKeyChain();
+
 private:
   shared_ptr<NetDeviceFace>
   DefaultNetDeviceCallback(Ptr<Node> node, Ptr<L3Protocol> ndn, Ptr<NetDevice> netDevice) const;