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;
diff --git a/utils/dummy-keychain.cpp b/utils/dummy-keychain.cpp
new file mode 100644
index 0000000..3cb3bde
--- /dev/null
+++ b/utils/dummy-keychain.cpp
@@ -0,0 +1,348 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2011-2014 University of California, Los Angeles
+ *
+ * See AUTHORS.md for complete list of authors and contributors.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "dummy-keychain.hpp"
+
+#include <ndn-cxx/util/io.hpp>
+#include <boost/iostreams/device/array.hpp>
+
+namespace ndn {
+namespace security {
+
+static const uint8_t DUMMY_CERT[] =
+  "Bv0C8Ac4CAVkdW1teQgDa2V5CANLRVkIEWtzay0xNDE4NjAwMzkxMDUwCAdJRC1D"
+  "RVJUCAn9AAABSkssIl4UAxgBAhX9AXMwggFvMCIYDzIwMTQxMjE0MjMzOTUxWhgP"
+  "MjAzNDEyMDkyMzM5NTFaMCUwIwYDVQQpExwvZHVtbXkva2V5L2tzay0xNDE4NjAw"
+  "MzkxMDUwMIIBIDANBgkqhkiG9w0BAQEFAAOCAQ0AMIIBCAKCAQEAxUfhv54Jdgeq"
+  "0wmQ/ru9ew/ByCKcQawaZT9Xm9o/sMahwQ9IbNx2Dz4Jkelaxra7+DI0QP3pYctv"
+  "Ykn/jwq5y3cO0LJQB+kf/7FtSKG9qBEv8aqq5hDVteBUKiyUXqDmQzbe+mTcJ9Yd"
+  "D7siF1dhrjnM3KL1xpcXu3QaV5m/I6cKVwYrJxp3JKr6k5pHhxJlPIyUu7oU3kFW"
+  "7bHq2uq4ec9gBXCKwA64IVYVQm1GVDk+V0wr7pw9qD6QNa7eMzrCME6vfM0deSiU"
+  "a4TovUJDQFDsM287kYm3tZu7iuJzmOC63tl4YZdyqyOgnqSrUGE1soNHfLokI13H"
+  "hSwxok7nuQIBERY0GwEBHC8HLQgFZHVtbXkIA2tleQgDS0VZCBFrc2stMTQxODYw"
+  "MDM5MTA1MAgHSUQtQ0VSVBf9AQBLLJoQt9HE93NI3Mv1JCb3ezBCWMwTDnZA+XQV"
+  "UgVSvISJfU/lo2sne0SfGp4KsUhj206CDpuh3q0Th5gKSJeysy/bv66V2m2G8aDn"
+  "OkJ7Ut+2o/QnFpIMJz+oZf2f9Z0Pchocmkv8y4Fj02t8HCuFO1ekEvOcocZvWbKy"
+  "HX+P0OdefPzSC535/rsNHXTzgPsoV+yb13vrm4wPeqPPBs+scQYneIFKkRkGE5PU"
+  "pkncAMBN6iWgmSA2RcjcbmT6utCjJTqWviX1XPQtHoF/hBGC0D/TtQDgwVGGibXB"
+  "zb+klRHvCC/uUIfjU2HrE705kaw8btPhTP5/PMe8YKkk+hjh";
+
+static const uint8_t DUMMY_SIGNATURE[] =
+  {0x17, 0xfd, 0x01, 0x00, 0x93, 0x15, 0x09, 0x49, 0x79, 0x9e, 0xb7, 0x9c, 0xd3, 0xc1, 0xbf, 0x61,
+   0x89, 0xd5, 0xd9, 0xca, 0xf2, 0xb0, 0x14, 0xae, 0x72, 0x7c, 0x1f, 0x8f, 0xf5, 0xb1, 0x70, 0xd6,
+   0x9b, 0x8f, 0xf8, 0xd7, 0x2d, 0xbc, 0x92, 0x6f, 0x7d, 0x77, 0x96, 0x46, 0xea, 0xd4, 0x7d, 0x90,
+   0xbc, 0x7a, 0xeb, 0xe2, 0x03, 0x93, 0xb1, 0xd2, 0x62, 0xec, 0x9d, 0xff, 0x9c, 0x9c, 0x2a, 0x14,
+   0x7d, 0x23, 0xca, 0x29, 0x3d, 0x15, 0x1a, 0x40, 0x42, 0x2c, 0x59, 0x33, 0x8a, 0xf7, 0xc0, 0x6b,
+   0xc4, 0x9c, 0xf3, 0xc4, 0x99, 0xa4, 0x1a, 0x60, 0xf5, 0x28, 0x7d, 0x4c, 0xef, 0x43, 0x7d, 0xbd,
+   0x7d, 0x00, 0x51, 0xee, 0x41, 0xf5, 0x25, 0x80, 0xce, 0xe6, 0x64, 0x4f, 0x75, 0x54, 0xf3, 0xb2,
+   0x99, 0x9a, 0x0f, 0x93, 0x9a, 0x28, 0x1d, 0xfe, 0x12, 0x8a, 0xe0, 0xc1, 0x02, 0xeb, 0xa4, 0x35,
+   0x52, 0x88, 0xac, 0x44, 0x1a, 0x44, 0x82, 0x97, 0x4f, 0x5f, 0xa8, 0xd8, 0x9f, 0x67, 0x38, 0xa8,
+   0x64, 0xb6, 0x62, 0x99, 0xbd, 0x96, 0x3c, 0xf5, 0x86, 0x09, 0x5c, 0x97, 0x6b, 0x8f, 0xae, 0xe0,
+   0x60, 0xe7, 0x23, 0x98, 0x6a, 0xee, 0xc1, 0xb0, 0x14, 0xbe, 0x46, 0x2c, 0xfb, 0xa7, 0x27, 0x73,
+   0xe4, 0xf3, 0x26, 0x33, 0xba, 0x99, 0xd4, 0x01, 0x38, 0xa8, 0xf2, 0x9e, 0x87, 0xe0, 0x71, 0x0b,
+   0x25, 0x44, 0x07, 0x35, 0x88, 0xab, 0x67, 0x27, 0x56, 0x0e, 0xb5, 0xb5, 0xe8, 0x27, 0xb4, 0x49,
+   0xdc, 0xb8, 0x48, 0x31, 0xff, 0x99, 0x48, 0xab, 0x11, 0xb4, 0xa0, 0xdf, 0x8a, 0x6d, 0xff, 0x43,
+   0x69, 0x32, 0xa7, 0xbc, 0x63, 0x9d, 0x0f, 0xe0, 0x95, 0x34, 0x36, 0x25, 0x4b, 0x3e, 0x36, 0xbd,
+   0x81, 0x91, 0x0b, 0x91, 0x9f, 0x3a, 0x04, 0xa2, 0x44, 0x28, 0x19, 0xa1, 0x38, 0x21, 0x4f, 0x25,
+   0x59, 0x8a, 0x48, 0xc2};
+
+bool
+DummyPublicInfo::doesIdentityExist(const Name& identityName)
+{
+  return true;
+}
+
+void
+DummyPublicInfo::addIdentity(const Name& identityName)
+{
+}
+
+bool
+DummyPublicInfo::revokeIdentity()
+{
+  return true;
+}
+
+bool
+DummyPublicInfo::doesPublicKeyExist(const Name& keyName)
+{
+  return true;
+}
+
+void
+DummyPublicInfo::addKey(const Name& keyName, const PublicKey& publicKey)
+{
+}
+
+shared_ptr<PublicKey>
+DummyPublicInfo::getPublicKey(const Name& keyName)
+{
+  static shared_ptr<PublicKey> publicKey = nullptr;
+  if (publicKey == nullptr) {
+    typedef boost::iostreams::stream<boost::iostreams::array_source> arrayStream;
+    arrayStream
+    is(reinterpret_cast<const char*>(DUMMY_CERT), sizeof(DUMMY_CERT));
+    auto cert = io::load<IdentityCertificate>(is, io::NO_ENCODING);
+    publicKey = make_shared<PublicKey>(cert->getPublicKeyInfo());
+  }
+
+  return publicKey;
+}
+
+KeyType
+DummyPublicInfo::getPublicKeyType(const Name& keyName)
+{
+  return KEY_TYPE_RSA;
+}
+
+bool
+DummyPublicInfo::doesCertificateExist(const Name& certificateName)
+{
+  return true;
+}
+
+void
+DummyPublicInfo::addCertificate(const IdentityCertificate& certificate)
+{
+}
+
+shared_ptr<IdentityCertificate>
+DummyPublicInfo::getCertificate(const Name& certificateName)
+{
+  static shared_ptr<IdentityCertificate> cert = nullptr;
+  if (cert == nullptr) {
+    typedef boost::iostreams::stream<boost::iostreams::array_source> arrayStream;
+    arrayStream
+    is(reinterpret_cast<const char*>(DUMMY_CERT), sizeof(DUMMY_CERT));
+    cert = io::load<IdentityCertificate>(is, io::BASE_64);
+  }
+
+  return cert;
+}
+
+Name
+DummyPublicInfo::getDefaultIdentity()
+{
+  return "/dummy/key";
+}
+
+Name
+DummyPublicInfo::getDefaultKeyNameForIdentity(const Name& identityName)
+{
+  return "/dummy/key/ksk-1418600391050";
+}
+
+Name
+DummyPublicInfo::getDefaultCertificateNameForKey(const Name& keyName)
+{
+  return "/dummy/key/KEY/ksk-1418600391050/ID-CERT/%FD%00%00%01JK%2C%22%5E";
+}
+
+void
+DummyPublicInfo::getAllIdentities(std::vector<Name>& nameList, bool isDefault)
+{
+  if (isDefault) {
+    nameList.push_back("/dummy");
+  }
+}
+
+void
+DummyPublicInfo::getAllKeyNames(std::vector<Name>& nameList, bool isDefault)
+{
+  if (isDefault) {
+    nameList.push_back("/dummy/key/ksk-1418600391050");
+  }
+}
+
+void
+DummyPublicInfo::getAllKeyNamesOfIdentity(const Name& identity, std::vector<Name>& nameList,
+                                          bool isDefault)
+{
+  if (isDefault) {
+    nameList.push_back("/dummy/key/ksk-1418600391050");
+  }
+}
+
+void
+DummyPublicInfo::getAllCertificateNames(std::vector<Name>& nameList, bool isDefault)
+{
+  if (isDefault) {
+    nameList.push_back("/dummy/key/KEY/ksk-1418600391050/ID-CERT/%FD%00%00%01JK%2C%22%5E");
+  }
+}
+
+void
+DummyPublicInfo::getAllCertificateNamesOfKey(const Name& keyName, std::vector<Name>& nameList,
+                                             bool isDefault)
+{
+  if (isDefault) {
+    nameList.push_back("/dummy/key/KEY/ksk-1418600391050/ID-CERT/%FD%00%00%01JK%2C%22%5E");
+  }
+}
+
+void
+DummyPublicInfo::deleteCertificateInfo(const Name& certificateName)
+{
+}
+
+void
+DummyPublicInfo::deletePublicKeyInfo(const Name& keyName)
+{
+}
+
+void
+DummyPublicInfo::deleteIdentityInfo(const Name& identity)
+{
+}
+
+void
+DummyPublicInfo::setDefaultIdentityInternal(const Name& identityName)
+{
+}
+
+void
+DummyPublicInfo::setDefaultKeyNameForIdentityInternal(const Name& keyName)
+{
+}
+
+void
+DummyPublicInfo::setDefaultCertificateNameForKeyInternal(const Name& certificateName)
+{
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+
+void
+DummyTpm::setTpmPassword(const uint8_t* password, size_t passwordLength)
+{
+}
+
+void
+DummyTpm::resetTpmPassword()
+{
+}
+
+void
+DummyTpm::setInTerminal(bool inTerminal)
+{
+}
+
+bool
+DummyTpm::getInTerminal() const
+{
+  return false;
+}
+
+bool
+DummyTpm::isLocked()
+{
+  return false;
+}
+
+bool
+DummyTpm::unlockTpm(const char* password, size_t passwordLength, bool usePassword)
+{
+  return true;
+}
+
+void
+DummyTpm::generateKeyPairInTpm(const Name& keyName, const KeyParams& params)
+{
+}
+
+void
+DummyTpm::deleteKeyPairInTpm(const Name& keyName)
+{
+}
+
+shared_ptr<PublicKey>
+DummyTpm::getPublicKeyFromTpm(const Name& keyName)
+{
+  return nullptr;
+}
+
+Block
+DummyTpm::signInTpm(const uint8_t* data, size_t dataLength, const Name& keyName,
+                    DigestAlgorithm digestAlgorithm)
+{
+  return Block(DUMMY_SIGNATURE, sizeof(DUMMY_SIGNATURE));
+}
+
+ConstBufferPtr
+DummyTpm::decryptInTpm(const uint8_t* data, size_t dataLength, const Name& keyName,
+                       bool isSymmetric)
+{
+  throw Error("Not supported");
+}
+
+ConstBufferPtr
+DummyTpm::encryptInTpm(const uint8_t* data, size_t dataLength, const Name& keyName,
+                       bool isSymmetric)
+{
+  throw Error("Not supported");
+}
+
+void
+DummyTpm::generateSymmetricKeyInTpm(const Name& keyName, const KeyParams& params)
+{
+}
+
+bool
+DummyTpm::doesKeyExistInTpm(const Name& keyName, KeyClass keyClass)
+{
+  return true;
+}
+
+bool
+DummyTpm::generateRandomBlock(uint8_t* res, size_t size)
+{
+  return false;
+}
+
+void
+DummyTpm::addAppToAcl(const Name& keyName, KeyClass keyClass, const std::string& appPath,
+                      AclType acl)
+{
+}
+
+ConstBufferPtr
+DummyTpm::exportPrivateKeyPkcs8FromTpm(const Name& keyName)
+{
+  throw Error("Not supported");
+}
+
+bool
+DummyTpm::importPrivateKeyPkcs8IntoTpm(const Name& keyName, const uint8_t* buffer,
+                                       size_t bufferSize)
+{
+  return false;
+}
+
+bool
+DummyTpm::importPublicKeyPkcs1IntoTpm(const Name& keyName, const uint8_t* buffer, size_t bufferSize)
+{
+  return false;
+}
+
+} // namespace security
+} // namespace ndn
diff --git a/utils/dummy-keychain.hpp b/utils/dummy-keychain.hpp
new file mode 100644
index 0000000..2af451d
--- /dev/null
+++ b/utils/dummy-keychain.hpp
@@ -0,0 +1,184 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2011-2014 University of California, Los Angeles
+ *
+ * See AUTHORS.md for complete list of authors and contributors.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef NDNSIM_UTILS_DUMMY_KEYCHAIN_HPP
+#define NDNSIM_UTILS_DUMMY_KEYCHAIN_HPP
+
+#include <ndn-cxx/security/key-chain.hpp>
+
+namespace ndn {
+namespace security {
+
+class DummyPublicInfo : public SecPublicInfo {
+public:
+  virtual bool
+  doesIdentityExist(const Name& identityName);
+
+  virtual void
+  addIdentity(const Name& identityName);
+
+  virtual bool
+  revokeIdentity();
+
+  virtual bool
+  doesPublicKeyExist(const Name& keyName);
+
+  virtual void
+  addKey(const Name& keyName, const PublicKey& publicKey);
+
+  virtual shared_ptr<PublicKey>
+  getPublicKey(const Name& keyName);
+
+  virtual KeyType
+  getPublicKeyType(const Name& keyName);
+
+  virtual bool
+  doesCertificateExist(const Name& certificateName);
+
+  virtual void
+  addCertificate(const IdentityCertificate& certificate);
+
+  virtual shared_ptr<IdentityCertificate>
+  getCertificate(const Name& certificateName);
+
+  virtual Name
+  getDefaultIdentity();
+
+  virtual Name
+  getDefaultKeyNameForIdentity(const Name& identityName);
+
+  virtual Name
+  getDefaultCertificateNameForKey(const Name& keyName);
+
+  virtual void
+  getAllIdentities(std::vector<Name>& nameList, bool isDefault);
+
+  virtual void
+  getAllKeyNames(std::vector<Name>& nameList, bool isDefault);
+
+  virtual void
+  getAllKeyNamesOfIdentity(const Name& identity, std::vector<Name>& nameList, bool isDefault);
+
+  virtual void
+  getAllCertificateNames(std::vector<Name>& nameList, bool isDefault);
+
+  virtual void
+  getAllCertificateNamesOfKey(const Name& keyName, std::vector<Name>& nameList, bool isDefault);
+
+  virtual void
+  deleteCertificateInfo(const Name& certificateName);
+
+  virtual void
+  deletePublicKeyInfo(const Name& keyName);
+
+  virtual void
+  deleteIdentityInfo(const Name& identity);
+
+protected:
+  virtual void
+  setDefaultIdentityInternal(const Name& identityName);
+
+  virtual void
+  setDefaultKeyNameForIdentityInternal(const Name& keyName);
+
+  virtual void
+  setDefaultCertificateNameForKeyInternal(const Name& certificateName);
+};
+
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+
+class DummyTpm : public SecTpm {
+public:
+  virtual void
+  setTpmPassword(const uint8_t* password, size_t passwordLength);
+
+  virtual void
+  resetTpmPassword();
+
+  virtual void
+  setInTerminal(bool inTerminal);
+
+  virtual bool
+  getInTerminal() const;
+
+  virtual bool
+  isLocked();
+
+  virtual bool
+  unlockTpm(const char* password, size_t passwordLength, bool usePassword);
+
+  virtual void
+  generateKeyPairInTpm(const Name& keyName, const KeyParams& params);
+
+  virtual void
+  deleteKeyPairInTpm(const Name& keyName);
+
+  virtual shared_ptr<PublicKey>
+  getPublicKeyFromTpm(const Name& keyName);
+
+  virtual Block
+  signInTpm(const uint8_t* data, size_t dataLength, const Name& keyName,
+            DigestAlgorithm digestAlgorithm);
+
+  virtual ConstBufferPtr
+  decryptInTpm(const uint8_t* data, size_t dataLength, const Name& keyName, bool isSymmetric);
+
+  virtual ConstBufferPtr
+  encryptInTpm(const uint8_t* data, size_t dataLength, const Name& keyName, bool isSymmetric);
+
+  virtual void
+  generateSymmetricKeyInTpm(const Name& keyName, const KeyParams& params);
+
+  virtual bool
+  doesKeyExistInTpm(const Name& keyName, KeyClass keyClass);
+
+  virtual bool
+  generateRandomBlock(uint8_t* res, size_t size);
+
+  virtual void
+  addAppToAcl(const Name& keyName, KeyClass keyClass, const std::string& appPath, AclType acl);
+
+protected:
+  virtual ConstBufferPtr
+  exportPrivateKeyPkcs8FromTpm(const Name& keyName);
+
+  virtual bool
+  importPrivateKeyPkcs8IntoTpm(const Name& keyName, const uint8_t* buffer, size_t bufferSize);
+
+  virtual bool
+  importPublicKeyPkcs1IntoTpm(const Name& keyName, const uint8_t* buffer, size_t bufferSize);
+};
+
+typedef KeyChainTraits<DummyPublicInfo, DummyTpm> DummyKeyChainTraits;
+
+} // namespace security
+
+class DummyKeyChain : public KeyChain {
+public:
+  DummyKeyChain()
+    : KeyChain(security::DummyKeyChainTraits())
+  {
+  }
+};
+
+} // namespace ndn
+
+#endif // NDNSIM_UTILS_DUMMY_KEYCHAIN_HPP