diff --git a/src/sec-rule-sync-specific.cc b/src/sec-rule-sync-specific.cc
new file mode 100644
index 0000000..802ed4f
--- /dev/null
+++ b/src/sec-rule-sync-specific.cc
@@ -0,0 +1,56 @@
+/* -*- 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 "sec-rule-sync-specific.h"
+#include <ndn-cpp/security/signature-sha256-with-rsa.hpp>
+
+using namespace ndn;
+using namespace ndn::ptr_lib;
+using namespace std;
+
+
+SecRuleSyncSpecific::SecRuleSyncSpecific(shared_ptr<Regex> dataRegex,
+                                         shared_ptr<Regex> signerRegex)
+  : SecRule(SecRule::IDENTITY_RULE, true)
+  , m_dataRegex(dataRegex)
+  , m_signerRegex(signerRegex)
+{}
+
+SecRuleSyncSpecific::SecRuleSyncSpecific(const SecRuleSyncSpecific& rule)
+  : SecRule(SecRule::IDENTITY_RULE, true)
+  , m_dataRegex(rule.m_dataRegex)
+  , m_signerRegex(rule.m_signerRegex)
+{}
+
+bool 
+SecRuleSyncSpecific::matchDataName(const Data& data)
+{ return m_dataRegex->match(data.getName()); }
+
+bool 
+SecRuleSyncSpecific::matchSignerName(const Data& data)
+{ 
+  try{
+    SignatureSha256WithRsa sig(data.getSignature());
+    Name signerName = sig.getKeyLocator().getName ();
+    return m_signerRegex->match(signerName); 
+  }catch(SignatureSha256WithRsa::Error &e){
+    return false;
+  }catch(KeyLocator::Error &e){
+    return false;
+  }
+}
+
+bool
+SecRuleSyncSpecific::satisfy(const Data & data)
+{ return (matchDataName(data) && matchSignerName(data)) ? true : false ; }
+
+bool
+SecRuleSyncSpecific::satisfy(const Name & dataName, const Name & signerName)
+{ return (m_dataRegex->match(dataName) && m_signerRegex->match(signerName)); }