diff --git a/src/group-manager.hpp b/src/group-manager.hpp
index 2e19ab1..56feb28 100644
--- a/src/group-manager.hpp
+++ b/src/group-manager.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014-2015,  Regents of the University of California
+ * Copyright (c) 2014-2018,  Regents of the University of California
  *
  * This file is part of ndn-group-encrypt (Group-based Encryption Protocol for NDN).
  * See AUTHORS.md for complete list of ndn-group-encrypt authors and contributors.
@@ -16,7 +16,7 @@
  * You should have received a copy of the GNU General Public License along with
  * ndn-group-encrypt, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  *
- * @author Zhiyi Zhang <dreamerbarrychang@gmail.com>
+ * @author Zhiyi Zhang <zhiyi@cs.ucla.edu>
  */
 
 #ifndef NDN_GEP_GROUP_MANAGER_HPP
@@ -36,8 +36,7 @@
   class Error : public std::runtime_error
   {
   public:
-    explicit
-    Error(const std::string& what)
+    explicit Error(const std::string& what)
       : std::runtime_error(what)
     {
     }
@@ -53,8 +52,11 @@
    * The group key will be an RSA key with @p paramLength bits.
    * The FreshnessPeriod of data packet carrying the keys will be set to @p freshPeriod hours.
    */
-  GroupManager(const Name& prefix, const Name& dataType, const std::string& dbPath,
-               const int paramLength, const int freshPeriod);
+  GroupManager(const Name& prefix,
+               const Name& dataType,
+               const std::string& dbPath,
+               const int paramLength,
+               const int freshPeriod);
 
   /**
    * @brief Create a group key for interval which
@@ -90,6 +92,9 @@
   void
   addMember(const std::string& scheduleName, const Data& memCert);
 
+  void
+  addMember(const std::string& scheduleName, const Name& keyName, const Buffer& key);
+
   /// @brief Remove member with name @p identity from the group.
   void
   removeMember(const Name& identity);
@@ -99,7 +104,7 @@
   updateMemberSchedule(const Name& identity, const std::string& scheduleName);
 
 
-PUBLIC_WITH_TESTS_ELSE_PRIVATE:
+PUBLIC_WITH_TESTS_ELSE_PRIVATE :
   /**
    * @brief Calculate interval that covers @p timeslot
    * and fill @p memberKeys with the info of members who is allowed to access the interval.
@@ -117,13 +122,15 @@
 
   /// @brief Create E-KEY data.
   Data
-  createEKeyData(const std::string& startTs, const std::string& endTs,
-                 const Buffer& pubKeyBuf);
+  createEKeyData(const std::string& startTs, const std::string& endTs, const Buffer& pubKeyBuf);
 
   /// @brief Create D-KEY data.
   Data
-  createDKeyData(const std::string& startTs, const std::string& endTs, const Name& keyName,
-                 const Buffer& priKeyBuf, const Buffer& certKey);
+  createDKeyData(const std::string& startTs,
+                 const std::string& endTs,
+                 const Name& keyName,
+                 const Buffer& priKeyBuf,
+                 const Buffer& certKey);
 
   /// @brief Add a EKey to the database
   void