diff --git a/src/security/sec-public-info-sqlite3.hpp b/src/security/sec-public-info-sqlite3.hpp
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+++ b/src/security/sec-public-info-sqlite3.hpp
@@ -0,0 +1,224 @@
+/* -*- 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>
+ * @author: Jeff Thompson <jefft0@remap.ucla.edu>
+ * See COPYING for copyright and distribution information.
+ */
+
+#ifndef NDN_SEC_PUBLIC_INFO_SQLITE3_HPP
+#define NDN_SEC_PUBLIC_INFO_SQLITE3_HPP
+
+// Only compile if ndn-cpp-config.h defines NDN_CPP_HAVE_SQLITE3.
+#include "ndn-cpp-config.h"
+#ifdef NDN_CPP_HAVE_SQLITE3
+
+#include "../common.hpp"
+#include "sec-public-info.hpp"
+
+struct sqlite3;
+
+namespace ndn
+{
+  
+/**
+ * BasicIdentityStorage extends IdentityStorage to implement a basic storage of identity, public keys and certificates
+ * using SQLite.
+ */
+class SecPublicInfoSqlite3 : public SecPublicInfo {
+public:
+  struct Error : public SecPublicInfo::Error { Error(const std::string &what) : SecPublicInfo::Error(what) {} };
+
+  SecPublicInfoSqlite3();
+  
+  /**
+   * The virtual Destructor.
+   */
+  virtual 
+  ~SecPublicInfoSqlite3();
+
+  // from SecPublicInfo
+  /**
+   * Check if the specified identity already exists.
+   * @param identityName The identity name.
+   * @return true if the identity exists, otherwise false.
+   */
+  virtual bool 
+  doesIdentityExist(const Name& identityName);
+
+  /**
+   * Add a new identity. An exception will be thrown if the identity already exists.
+   * @param identityName The identity name to be added.
+   */
+  virtual void
+  addIdentity(const Name& identityName);
+
+  /**
+   * Revoke the identity.
+   * @return true if the identity was revoked, false if not.
+   */
+  virtual bool 
+  revokeIdentity();
+
+  /**
+   * Check if the specified key already exists.
+   * @param keyName The name of the key.
+   * @return true if the key exists, otherwise false.
+   */
+  virtual bool 
+  doesPublicKeyExist(const Name& keyName);
+
+  /**
+   * Add a public key to the identity storage.
+   * @param keyName The name of the public key to be added.
+   * @param keyType Type of the public key to be added.
+   * @param publicKeyDer A blob of the public key DER to be added.
+   */
+  virtual void 
+  addPublicKey(const Name& keyName, KeyType keyType, const PublicKey& publicKeyDer);
+
+  /**
+   * Get the public key DER blob from the identity storage.
+   * @param keyName The name of the requested public key.
+   * @return The DER Blob.  If not found, return a Blob with a null pointer.
+   */
+  virtual ptr_lib::shared_ptr<PublicKey>
+  getPublicKey(const Name& keyName);
+
+  /**
+   * Activate a key.  If a key is marked as inactive, its private part will not be used in packet signing.
+   * @param keyName name of the key
+   */
+  virtual inline void 
+  activatePublicKey(const Name& keyName);
+
+  /**
+   * Deactivate a key. If a key is marked as inactive, its private part will not be used in packet signing.
+   * @param keyName name of the key
+   */
+  virtual inline void 
+  deactivatePublicKey(const Name& keyName);
+
+  /**
+   * Check if the specified certificate already exists.
+   * @param certificateName The name of the certificate.
+   * @return true if the certificate exists, otherwise false.
+   */
+  virtual bool
+  doesCertificateExist(const Name& certificateName);
+
+  /**
+   * Add a certificate in to the identity storage without checking if the identity and key exists.
+   * @param certificate The certificate to be added.
+   */
+  virtual void
+  addAnyCertificate (const IdentityCertificate& certificate);
+
+  /**
+   * Add a certificate to the identity storage.
+   * @param certificate The certificate to be added.  This makes a copy of the certificate.
+   */
+  virtual void 
+  addCertificate(const IdentityCertificate& certificate);
+
+  /**
+   * Get a certificate from the identity storage.
+   * @param certificateName The name of the requested certificate.
+   * @param allowAny If false, only a valid certificate will be returned, otherwise validity is disregarded.
+   * @return The requested certificate.  If not found, return a shared_ptr with a null pointer.
+   */
+  virtual ptr_lib::shared_ptr<IdentityCertificate> 
+  getCertificate(const Name &certificateName);
+
+
+  /*****************************************
+   *            Default Getter             *
+   *****************************************/
+
+  /**
+   * Get the default identity. 
+   * @param return The name of default identity, or an empty name if there is no default.
+   */
+  virtual Name 
+  getDefaultIdentity();
+
+  /**
+   * Get the default key name for the specified identity.
+   * @param identityName The identity name.
+   * @return The default key name.
+   */
+  virtual Name 
+  getDefaultKeyNameForIdentity(const Name& identityName);
+
+  /**
+   * Get the default certificate name for the specified key.
+   * @param keyName The key name.
+   * @return The default certificate name.
+   */
+  virtual Name 
+  getDefaultCertificateNameForKey(const Name& keyName);
+
+  virtual std::vector<Name>
+  getAllIdentities(bool isDefault);
+
+  virtual std::vector<Name>
+  getAllKeyNames(bool isDefault);
+
+  virtual std::vector<Name>
+  getAllKeyNamesOfIdentity(const Name& identity, bool isDefault);
+    
+  virtual std::vector<Name>
+  getAllCertificateNames(bool isDefault);
+
+  virtual std::vector<Name>
+  getAllCertificateNamesOfKey(const Name& keyName, bool isDefault);
+  
+protected:
+  /**
+   * Set the default identity.  If the identityName does not exist, then clear the default identity
+   * so that getDefaultIdentity() returns an empty name.
+   * @param identityName The default identity name.
+   */
+  virtual void 
+  setDefaultIdentityInternal(const Name& identityName);
+
+  /**
+   * Set the default key name for the specified identity.
+   * @param keyName The key name.
+   * @param identityNameCheck (optional) The identity name to check the keyName.
+   */
+  virtual void
+  setDefaultKeyNameForIdentityInternal(const Name& keyName);
+
+  /**
+   * Set the default key name for the specified identity.
+   * @param keyName The key name.
+   * @param certificateName The certificate name.
+   */
+  virtual void 
+  setDefaultCertificateNameForKeyInternal(const Name& certificateName);  
+  
+private:
+  void
+  updateKeyStatus(const Name& keyName, bool isActive);
+
+  sqlite3 *database_;
+};
+
+void
+SecPublicInfoSqlite3::activatePublicKey(const Name& keyName)
+{
+  updateKeyStatus(keyName, true);
+}
+
+void
+SecPublicInfoSqlite3::deactivatePublicKey(const Name& keyName)
+{
+  updateKeyStatus(keyName, false);
+}
+
+}
+
+#endif // NDN_CPP_HAVE_SQLITE3
+
+#endif