diff --git a/src/sync-intro-certificate.h b/src/sync-intro-certificate.h
new file mode 100644
index 0000000..db41627
--- /dev/null
+++ b/src/sync-intro-certificate.h
@@ -0,0 +1,69 @@
+/* -*- 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>
+ */
+
+#ifndef SYNC_INTRO_CERTIFICATE_H
+#define SYNC_INTRO_CERTIFICATE_H
+
+#include <ndn.cxx/security/certificate/certificate.h>
+#include <ndn.cxx/security/certificate/identity-certificate.h>
+
+class SyncIntroCertificate : public ndn::security::Certificate
+{
+public:
+  enum IntroType{
+    PRODUCER,
+    INTRODUCER
+  };
+  
+public:
+  SyncIntroCertificate ();
+  
+  SyncIntroCertificate (const ndn::Name& nameSpace,
+                        const ndn::Name& keyName,
+                        const ndn::Name& signerName,
+                        const ndn::Time& notBefore,
+                        const ndn::Time& notAfter,
+                        const ndn::security::Publickey& key,
+                        const IntroType& introType = PRODUCER);
+  
+  SyncIntroCertificate (const ndn::Name& nameSpace,
+                        const ndn::security::IdentityCertificate& identityCertificate,
+                        const ndn::Name& signerName,
+                        const IntroType& introType);
+  
+  SyncIntroCertificate (const ndn::Data& data);
+  
+  SyncIntroCertificate (const SyncIntroCertificate& chronosIntroCertificate);
+  
+  
+  virtual 
+  ~SyncIntroCertificate ()
+  {}
+  
+  ndn::Data &
+  setName (const ndn::Name& name);
+  
+  inline virtual ndn::Name 
+  getPublicKeyName () const
+  { return m_keyName; }
+  
+  inline IntroType
+  getIntroType()
+  { return m_introType; }
+
+  static bool
+  isSyncIntroCertificate(const ndn::security::Certificate& certificate);
+
+protected:
+  ndn::Name m_keyName;
+  IntroType m_introType;
+};
+
+#endif