diff --git a/src/panel-policy-manager.cpp b/src/panel-policy-manager.cpp
new file mode 100644
index 0000000..d3c7260
--- /dev/null
+++ b/src/panel-policy-manager.cpp
@@ -0,0 +1,191 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013, Regents of the University of California
+ *                     Yingdi Yu
+ *
+ * BSD license, See the LICENSE file for more information
+ *
+ * Author: Yingdi Yu <yingdi@cs.ucla.edu>
+ */
+
+#include "panel-policy-manager.h"
+
+#include <ndn.cxx/security/certificate/identity-certificate.h>
+#include <boost/bind.hpp>
+
+#include "logging.h"
+
+using namespace std;
+using namespace ndn;
+using namespace ndn::security;
+
+INIT_LOGGER("PanelPolicyManager");
+
+PanelPolicyManager::PanelPolicyManager(const int & stepLimit,
+						 Ptr<CertificateCache> certificateCache)
+  : m_stepLimit(stepLimit)
+  , m_certificateCache(certificateCache)
+  , m_localPrefixRegex(Ptr<Regex>(new Regex("^<local><ndn><prefix><><>$")))
+{
+  m_invitationDataSigningRule = Ptr<IdentityPolicyRule>(new IdentityPolicyRule("^<ndn><broadcast><chronos><invitation>([^<chatroom>]*)<chatroom>", 
+        								"^([^<KEY>]*)<KEY><dsk-.*><ID-CERT><>$", 
+        								"==", "\\1", "\\1", true));
+  
+  m_dskRule = Ptr<IdentityPolicyRule>(new IdentityPolicyRule("^([^<KEY>]*)<KEY><dsk-.*><ID-CERT><>$", 
+							     "^([^<KEY>]*)<KEY>(<>*)<ksk-.*><ID-CERT>$", 
+							     "==", "\\1", "\\1\\2", true));
+
+  m_keyNameRegex = Ptr<Regex>(new Regex("^([^<KEY>]*)<KEY>(<>*<ksk-.*>)<ID-CERT>$", "\\1\\2"));
+
+  m_signingCertificateRegex = Ptr<Regex>(new Regex("^<ndn><broadcast><chronos><invitation>([^<chatroom>]*)<chatroom>", "\\1"));
+}
+
+bool 
+PanelPolicyManager::skipVerifyAndTrust (const Data & data)
+{
+  if(m_localPrefixRegex->match(data.getName()))
+    return true;
+  
+  return false;
+}
+
+bool
+PanelPolicyManager::requireVerify (const Data & data)
+{
+  // if(m_invitationDataRule->matchDataName(data))
+  //   return true;
+
+  if(m_dskRule->matchDataName(data))
+    return true;
+
+  return false;
+}
+
+Ptr<ValidationRequest>
+PanelPolicyManager::checkVerificationPolicy(Ptr<Data> data, 
+						 const int & stepCount, 
+						 const DataCallback& verifiedCallback,
+						 const UnverifiedCallback& unverifiedCallback)
+{
+  _LOG_DEBUG("checkVerificationPolicy");
+  if(m_stepLimit == stepCount)
+    {
+      _LOG_DEBUG("reach the maximum steps of verification");
+      unverifiedCallback(data);
+      return NULL;
+    }
+
+  Ptr<const signature::Sha256WithRsa> sha256sig = boost::dynamic_pointer_cast<const signature::Sha256WithRsa> (data->getSignature());    
+
+  if(KeyLocator::KEYNAME != sha256sig->getKeyLocator().getType())
+    {
+      unverifiedCallback(data);
+      return NULL;
+    }
+
+  const Name & keyLocatorName = sha256sig->getKeyLocator().getKeyName();
+
+  // if(m_invitationDataRule->satisfy(*data))
+  //   {
+  //     Ptr<const IdentityCertificate> trustedCert = m_certificateCache->getCertificate(keyLocatorName);
+      
+  //     if(NULL != trustedCert){
+  //       if(verifySignature(*data, trustedCert->getPublicKeyInfo()))
+  //         verifiedCallback(data);
+  //       else
+  //         unverifiedCallback(data);
+
+  //       return NULL;
+  //     }
+  //     else{
+  //       _LOG_DEBUG("KeyLocator has not been cached and validated!");
+
+  //       DataCallback recursiveVerifiedCallback = boost::bind(&PanelPolicyManager::onCertificateVerified, 
+  //       						     this, 
+  //       						     _1, 
+  //       						     data, 
+  //       						     verifiedCallback, 
+  //       						     unverifiedCallback);
+
+  //       UnverifiedCallback recursiveUnverifiedCallback = boost::bind(&PanelPolicyManager::onCertificateUnverified, 
+  //       							     this, 
+  //       							     _1, 
+  //       							     data, 
+  //       							     unverifiedCallback);
+
+
+  //       Ptr<Interest> interest = Ptr<Interest>(new Interest(sha256sig->getKeyLocator().getKeyName()));
+	
+  //       Ptr<ValidationRequest> nextStep = Ptr<ValidationRequest>(new ValidationRequest(interest, 
+  //       									       recursiveVerifiedCallback,
+  //       									       recursiveUnverifiedCallback,
+  //       									       0,
+  //       									       stepCount + 1)
+  //       							 );
+  //       return nextStep;
+  //     }
+  //   }
+
+  if(m_dskRule->satisfy(*data))
+    {
+      m_keyNameRegex->match(keyLocatorName);
+      Name keyName = m_keyNameRegex->expand();
+      _LOG_DEBUG(keyName.toUri());
+
+      if(m_trustAnchors.end() != m_trustAnchors.find(keyName))
+        if(verifySignature(*data, m_trustAnchors[keyName]))
+          verifiedCallback(data);
+        else
+          unverifiedCallback(data);
+      else
+        unverifiedCallback(data);
+
+      return NULL;	
+    }
+  _LOG_DEBUG("Unverified!");
+
+  unverifiedCallback(data);
+  return NULL;
+}
+
+// void 
+// PanelPolicyManager::onCertificateVerified(Ptr<Data> certData, 
+// 					       Ptr<Data> originalData,
+// 					       const DataCallback& verifiedCallback, 
+// 					       const UnverifiedCallback& unverifiedCallback)
+// {
+//   IdentityCertificate certificate(*certData);
+
+//   if(verifySignature(*originalData, certificate.getPublicKeyInfo()))
+//     verifiedCallback(originalData);
+//   else
+//     unverifiedCallback(originalData);
+// }
+
+// void
+// PanelPolicyManager::onCertificateUnverified(Ptr<Data> certData, 
+// 						 Ptr<Data> originalData,
+// 						 const UnverifiedCallback& unverifiedCallback)
+// { unverifiedCallback(originalData); }
+
+bool 
+PanelPolicyManager::checkSigningPolicy(const Name & dataName, const Name & certificateName)
+{
+  return m_invitationDataSigningRule->satisfy(dataName, certificateName);
+}
+
+Name 
+PanelPolicyManager::inferSigningIdentity(const Name & dataName)
+{
+  if(m_signingCertificateRegex->match(dataName))
+    return m_signingCertificateRegex->expand();
+  else
+    return Name();
+}
+
+void
+PanelPolicyManager::addTrustAnchor(const EndorseCertificate& selfEndorseCertificate)
+{ 
+  _LOG_DEBUG(selfEndorseCertificate.getPublicKeyName().toUri());
+  m_trustAnchors.insert(pair <Name, Publickey > (selfEndorseCertificate.getPublicKeyName(), selfEndorseCertificate.getPublicKeyInfo())); 
+}