diff --git a/ndn-cxx/security/key-chain.cpp b/ndn-cxx/security/key-chain.cpp
index f65b2861..5806c784 100644
--- a/ndn-cxx/security/key-chain.cpp
+++ b/ndn-cxx/security/key-chain.cpp
@@ -155,7 +155,7 @@ KeyChain::getDefaultKeyParams()
 //
 
 KeyChain::KeyChain()
-  : KeyChain(getDefaultPibLocator(), getDefaultTpmLocator(), true)
+  : KeyChain("pib-dummy", "tpm-dummy", true)
 {
 }
 
diff --git a/ndn-cxx/util/dummy-keychain.cpp b/ndn-cxx/util/dummy-keychain.cpp
new file mode 100644
index 00000000..dfee171a
--- /dev/null
+++ b/ndn-cxx/util/dummy-keychain.cpp
@@ -0,0 +1,352 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2011-2015  Regents of the University of California.
+ *
+ * This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM authors and
+ * contributors.
+ *
+ * ndnSIM is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * ndnSIM 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
+ * ndnSIM, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include "dummy-keychain.hpp"
+
+#include <ndn-cxx/util/io.hpp>
+#include <ndn-cxx/security/transform/public-key.hpp>
+#include <boost/iostreams/device/array.hpp>
+#include <boost/iostreams/stream.hpp>
+
+namespace ndn {
+namespace security {
+
+static const uint8_t DUMMY_CERT[] =
+    "Bv0CqQclCAVkdW1teQgDS0VZCAgtnChyuKo7YAgCTkEICf0AAAFe3zzGfBQJGAEC"
+    "GQQANu6AFf0BJjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAOJSa1j6"
+    "JAzobrmtlUdJi38EWQZOigLykf9psImvIu7pa29Q3apBXENcV1E9687FmfY85Ec3"
+    "/onMtN7WG/wiuKiu/9eOr5WslD3VGDgxhesx80ygP0GNsN8FzsMl0lRKduXx3wG4"
+    "MCT8CX7uA4n4JbHY+0QaKUEEMRCiXcRAtF+yKfr+GaVeSemg+i/LR+6CSgpOyH0K"
+    "ogH9nlNhBn1Hxyc8X+B/nEu6P6NNEKkSnhT1jAbWtT1eL3BPGK/HNY19w9k2Ln6/"
+    "OYlhaHfB4m0oR/ePcUguQBwTgYS+40YQYUPivBsSQv3X2/7+gGLhIzA4YppwOooK"
+    "RGhbmL8zF2evmJ8CAwEAARZHGwEBHBgHFggFZHVtbXkIA0tFWQgILZwocriqO2D9"
+    "AP0m/QD+DzIwMTcxMDAyVDIyMzczNv0A/w8yMDE4MTAwMlQyMjM3MzUX/QEAMBUV"
+    "O51BEQwxp646i7IuHkuc1C/LISnOP2+wBFF2Ea1ht9MKjKkyJdmB1/GAOiR3njKd"
+    "UgRjBlownL11EwYDxkPY39RR05TmhF6PkpP81Ro/Vzv7rtSi/dxFIZXCiyuKPRUx"
+    "E0pZelPWVs3zMfqQ+8rWG89Kqs1vM0dglLBzlX9Lbim71TyLmaJaMmmBKv8+eQ22"
+    "CN71sRZOovl1kKcTHpOm61nD3C1n9GRflFtaMAXE/XU4zMJVzBv6XwQl6PCIc9H2"
+    "vjLa28ruVjhMGxqCGhziTC2eR56SUixrnEcbOKT0R+8+0AFnZIjdYglOZPcVwTVB"
+    "G6OxECJOuSoREcd1Ww==;";
+
+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};
+
+const std::string DummyPib::SCHEME = "pib-dummy";
+const std::string DummyTpm::SCHEME = "tpm-dummy";
+
+NDN_CXX_KEYCHAIN_REGISTER_PIB_BACKEND(DummyPib);
+NDN_CXX_KEYCHAIN_REGISTER_TPM_BACKEND(DummyTpm);
+
+DummyPib::DummyPib(const std::string& locator)
+{
+}
+
+void
+DummyPib::setTpmLocator(const std::string& tpmLocator)
+{
+  m_tpmLocator = tpmLocator;
+}
+
+std::string
+DummyPib::getTpmLocator() const
+{
+  return m_tpmLocator;
+}
+
+bool
+DummyPib::hasIdentity(const Name& identityName) const
+{
+  return true;
+}
+
+void
+DummyPib::addIdentity(const Name& identityName)
+{
+}
+
+void
+DummyPib::removeIdentity(const Name& identity)
+{
+}
+
+void
+DummyPib::clearIdentities()
+{
+}
+
+std::set<Name>
+DummyPib::getIdentities() const
+{
+  std::set<Name> identities;
+  identities.insert("/dummy");
+  return identities;
+}
+
+void
+DummyPib::setDefaultIdentity(const Name& identityName)
+{
+}
+
+Name
+DummyPib::getDefaultIdentity() const
+{
+  return "/dummy";
+}
+
+bool
+DummyPib::hasKey(const Name& keyName) const
+{
+  return true;
+}
+
+void
+DummyPib::addKey(const Name& identity, const Name& keyName,
+                 span<const uint8_t> key)
+{
+}
+
+void
+DummyPib::removeKey(const Name& keyName)
+{
+}
+
+Buffer
+DummyPib::getKeyBits(const Name& keyName) const
+{
+    typedef boost::iostreams::stream<boost::iostreams::array_source> arrayStream;
+    arrayStream
+    is(reinterpret_cast<const char*>(DUMMY_CERT), sizeof(DUMMY_CERT));
+    auto cert = io::load<v2::Certificate>(is, io::BASE64);
+    return Buffer(cert->getContent().value(), cert->getContent().value_size());
+}
+
+std::set<Name>
+DummyPib::getKeysOfIdentity(const Name& identity) const
+{
+  std::set<Name> keys;
+  keys.insert("/dummy/KEY/-%9C%28r%B8%AA%3B%60");
+  return keys;
+}
+
+void
+DummyPib::setDefaultKeyOfIdentity(const Name& identity, const Name& keyName)
+{
+}
+
+Name
+DummyPib::getDefaultKeyOfIdentity(const Name& identity) const
+{
+  return "/dummy/KEY/-%9C%28r%B8%AA%3B%60";
+}
+
+bool
+DummyPib::hasCertificate(const Name& certName) const
+{
+  return true;
+}
+
+void
+DummyPib::addCertificate(const v2::Certificate& certificate)
+{
+}
+
+void
+DummyPib::removeCertificate(const Name& certName)
+{
+}
+
+v2::Certificate
+DummyPib::getCertificate(const Name& certificateName) const
+{
+  static shared_ptr<v2::Certificate> 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<v2::Certificate>(is, io::BASE64);
+  }
+
+  return *cert;
+}
+
+std::set<Name>
+DummyPib::getCertificatesOfKey(const Name& keyName) const
+{
+  std::set<Name> certs;
+  certs.insert("/dummy/KEY/-%9C%28r%B8%AA%3B%60/self/%FD%00%00%01%5E%DF%3Bv%01");
+  return certs;
+}
+
+void
+DummyPib::setDefaultCertificateOfKey(const Name& keyName, const Name& certName)
+{
+}
+
+v2::Certificate
+DummyPib::getDefaultCertificateOfKey(const Name& keyName) const
+{
+  static shared_ptr<v2::Certificate> 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<v2::Certificate>(is, io::BASE64);
+  }
+
+  return *cert;
+}
+
+std::string
+DummyPib::getScheme()
+{
+  return DummyPib::SCHEME;
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+
+namespace tpm {
+
+DummyKeyHandle::DummyKeyHandle(shared_ptr<transform::PrivateKey> key)
+{
+}
+
+ConstBufferPtr
+DummyKeyHandle::doSign(DigestAlgorithm digestAlgorithm, const InputBuffers& bufs) const
+{
+  return make_shared<Buffer>(DUMMY_SIGNATURE, sizeof(DUMMY_SIGNATURE));
+}
+
+bool
+DummyKeyHandle::doVerify(DigestAlgorithm digestAlgorithm, const InputBuffers& bufs,
+                         span<const uint8_t> sig) const
+{
+  return true;
+}
+
+ConstBufferPtr
+DummyKeyHandle::doDecrypt(span<const uint8_t> cipherText) const
+{
+  throw Error("Not supported");
+}
+
+ConstBufferPtr
+DummyKeyHandle::doDerivePublicKey() const
+{
+  throw Error("Not supported");
+}
+
+} // namespace tpm
+
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+
+DummyTpm::DummyTpm(const std::string& locator)
+{
+}
+
+bool
+DummyTpm::isTerminalMode() const
+{
+  return false;
+}
+
+void
+DummyTpm::setTerminalMode(bool isTerminal) const
+{
+}
+
+bool
+DummyTpm::isTpmLocked() const
+{
+  return false;
+}
+
+bool
+DummyTpm::doHasKey(const Name& keyName) const
+{
+  return false;
+}
+
+unique_ptr<tpm::KeyHandle>
+DummyTpm::doGetKeyHandle(const Name& keyName) const
+{
+  unique_ptr<tpm::KeyHandle> m_dummyKeyHandle = make_unique<tpm::DummyKeyHandle>(nullptr);
+  return m_dummyKeyHandle;
+}
+
+unique_ptr<tpm::KeyHandle>
+DummyTpm::doCreateKey(const Name& identity, const KeyParams& params)
+{
+  unique_ptr<tpm::KeyHandle> m_dummyKeyHandle = make_unique<tpm::DummyKeyHandle>(nullptr);
+  return m_dummyKeyHandle;
+}
+
+void
+DummyTpm::doDeleteKey(const Name& keyName)
+{
+  throw Error("Not supported");
+}
+
+ConstBufferPtr
+DummyTpm::doExportKey(const Name& keyName, const char* pw, size_t pwLen)
+{
+  throw Error("Not supported");
+}
+
+void
+DummyTpm::doImportKey(const Name& keyName, span<const uint8_t> pkcs8, const char* pw, size_t pwLen)
+{
+  throw Error("Not supported");
+}
+
+void
+DummyTpm::doImportKey(const Name& keyName, shared_ptr<transform::PrivateKey> key)
+{
+  throw Error("Not supported");
+}
+
+std::string
+DummyTpm::getScheme()
+{
+  return DummyTpm::SCHEME;
+}
+
+} // namespace security
+} // namespace ndn
diff --git a/ndn-cxx/util/dummy-keychain.hpp b/ndn-cxx/util/dummy-keychain.hpp
new file mode 100644
index 00000000..5f6a4350
--- /dev/null
+++ b/ndn-cxx/util/dummy-keychain.hpp
@@ -0,0 +1,226 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2011-2015  Regents of the University of California.
+ *
+ * This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM authors and
+ * contributors.
+ *
+ * ndnSIM is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * ndnSIM 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
+ * ndnSIM, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#ifndef NDNSIM_UTILS_DUMMY_KEYCHAIN_HPP
+#define NDNSIM_UTILS_DUMMY_KEYCHAIN_HPP
+
+#include <ndn-cxx/security/key-chain.hpp>
+#include <ndn-cxx/security/security-common.hpp>
+#include <ndn-cxx/security/pib/pib-impl.hpp>
+#include <ndn-cxx/security/tpm/back-end.hpp>
+#include <ndn-cxx/security/transform/private-key.hpp>
+
+namespace ndn {
+namespace security {
+
+using pib::PibImpl;
+using tpm::BackEnd;
+using tpm::KeyHandle;
+
+class DummyPib : public PibImpl
+{
+public:
+  class Error : public PibImpl::Error
+  {
+  public:
+    explicit
+    Error(const std::string& what)
+      : PibImpl::Error(what)
+    {
+    }
+  };
+
+public:
+  explicit DummyPib(const std::string& locator);
+
+  // TPM management
+  void
+  setTpmLocator(const std::string& tpmLocator) override;
+
+  std::string
+  getTpmLocator() const override;
+
+  // Identity manangement
+  bool
+  hasIdentity(const Name& identityName) const override;
+
+  void
+  addIdentity(const Name& identityName) override;
+
+  void
+  removeIdentity(const Name& identity) override;
+
+  void
+  clearIdentities() override;
+
+  std::set<Name>
+  getIdentities() const override;
+
+  void
+  setDefaultIdentity(const Name& identityName) override;
+
+  Name
+  getDefaultIdentity() const override;
+
+  // Key management
+  bool
+  hasKey(const Name& keyName) const override;
+
+  void
+  addKey(const Name& identity, const Name& keyName,
+         span<const uint8_t> key) override;
+
+  void
+  removeKey(const Name& keyName) override;
+
+  Buffer
+  getKeyBits(const Name& keyName) const override;
+
+  std::set<Name>
+  getKeysOfIdentity(const Name& identity) const override;
+
+  void
+  setDefaultKeyOfIdentity(const Name& identity, const Name& keyName) override;
+
+  Name
+  getDefaultKeyOfIdentity(const Name& identity) const override;
+
+  // certificate management
+  bool
+  hasCertificate(const Name& certName) const override;
+
+  void
+  addCertificate(const v2::Certificate& certificate) override;
+
+  void
+  removeCertificate(const Name& certName) override;
+
+  v2::Certificate
+  getCertificate(const Name& certificateName) const override;
+
+  std::set<Name>
+  getCertificatesOfKey(const Name& keyName) const override;
+
+  void
+  setDefaultCertificateOfKey(const Name& keyName, const Name& certName) override;
+
+  v2::Certificate
+  getDefaultCertificateOfKey(const Name& keyName) const override;
+
+  static std::string
+  getScheme();
+
+  static const std::string SCHEME;
+
+private:
+  std::string m_tpmLocator;
+};
+
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+
+namespace tpm {
+
+class DummyKeyHandle : public KeyHandle
+{
+public:
+  explicit
+  DummyKeyHandle(shared_ptr<transform::PrivateKey> key);
+
+private:
+  ConstBufferPtr
+  doSign(DigestAlgorithm digestAlgorithm, const InputBuffers& bufs) const final;
+
+  bool
+  doVerify(DigestAlgorithm digestAlgorithm, const InputBuffers& bufs,
+            span<const uint8_t> sig) const final;
+
+  ConstBufferPtr
+  doDecrypt(span<const uint8_t> cipherText) const final;
+
+  ConstBufferPtr
+  doDerivePublicKey() const final;
+};
+
+} // namespace tpm
+
+//////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////////////////
+
+class DummyTpm : public BackEnd
+{
+public:
+  class Error : public BackEnd::Error
+  {
+  public:
+    explicit
+    Error(const std::string& what)
+      : BackEnd::Error(what)
+    {
+    }
+  };
+
+public:
+  explicit DummyTpm(const std::string& locator);
+
+  bool
+  isTerminalMode() const override;
+
+  void
+  setTerminalMode(bool isTerminal) const override;
+
+  bool
+  isTpmLocked() const override;
+
+  ConstBufferPtr
+  sign(const uint8_t* buf, size_t size, const Name& keyName, DigestAlgorithm digestAlgorithm) const;
+
+  static std::string
+  getScheme();
+
+private:
+  bool
+  doHasKey(const Name& keyName) const final;
+
+  unique_ptr<tpm::KeyHandle>
+  doGetKeyHandle(const Name& keyName) const final;
+
+  unique_ptr<tpm::KeyHandle>
+  doCreateKey(const Name& identity, const KeyParams& params) final;
+
+  void
+  doDeleteKey(const Name& keyName) final;
+
+  ConstBufferPtr
+  doExportKey(const Name& keyName, const char* pw, size_t pwLen) final;
+
+  void
+  doImportKey(const Name& keyName, span<const uint8_t> pkcs8, const char* pw, size_t pwLen) final;
+
+  void
+  doImportKey(const Name& keyName, shared_ptr<transform::PrivateKey> key) final;
+
+public:
+  static const std::string SCHEME;
+};
+
+} // namespace security
+} // namespace ndn
+
+#endif // NDNSIM_UTILS_DUMMY_KEYCHAIN_HPP