diff --git a/src/security/sec-rule-specific.cpp b/src/security/sec-rule-specific.cpp
new file mode 100644
index 0000000..1479b6d
--- /dev/null
+++ b/src/security/sec-rule-specific.cpp
@@ -0,0 +1,55 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/**
+ * Copyright (C) 2013 Regents of the University of California.
+ * @author: Yingdi Yu <yingdi@cs.ucla.edu>
+ * See COPYING for copyright and distribution information.
+ */
+
+#include "sec-rule-specific.hpp"
+#include "signature-sha256-with-rsa.hpp"
+
+using namespace ndn;
+using namespace std;
+
+namespace ndn{
+
+SecRuleSpecific::SecRuleSpecific(shared_ptr<Regex> dataRegex,
+                                 shared_ptr<Regex> signerRegex)
+  : SecRule(true)
+  , m_dataRegex(dataRegex)
+  , m_signerRegex(signerRegex)
+{}
+
+SecRuleSpecific::SecRuleSpecific(const SecRuleSpecific& rule)
+  : SecRule(true)
+  , m_dataRegex(rule.m_dataRegex)
+  , m_signerRegex(rule.m_signerRegex)
+{}
+
+bool 
+SecRuleSpecific::matchDataName(const Data& data)
+{ return m_dataRegex->match(data.getName()); }
+
+bool 
+SecRuleSpecific::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
+SecRuleSpecific::satisfy(const Data & data)
+{ return (matchDataName(data) && matchSignerName(data)) ? true : false ; }
+
+bool
+SecRuleSpecific::satisfy(const Name & dataName, const Name & signerName)
+{ return (m_dataRegex->match(dataName) && m_signerRegex->match(signerName)); }
+
+}