NIU Ben, received his B.E. and M.E. degrees in School of Telecommunications Engineering from Xidian Uni- versity, China in 2006 and 2010, respectively. He is currently a Ph.D. candidate in School of Telecommu- nications Engineering at Xidian University, China. Fr- om 2011, he has been with the Department of Com- puter Science and Engineering, Pennsylvania State University, USA, as a visiting Ph.D. candidate for two years. His research interests are security and privacy in mobile social networks, and RFID security protocol. Email: xd.niuben@gmail.com ZHU )iaoyan. received her B.E., M.E. and Ph.D. de- grees from School of Telecommunications Engineer- ing, Xidian University, China in 2000, 2004 and 2009 respectively. She was a visiting scholar in the Dep~ artment of Electrical and Computer Engineering at University of Florida, USA, from 2008 to 2010. She is currently an Associate Professor in School of Telecom- munications Engineering, Xidian University. Her re- search interests include wireless networks and net- work security. Email: xyzhu@mail.xidian.edu.cn CHI Haotian, received his B.E. degree in School of Telecommunications Engineering from Xidian Uni- versity, China in 2012. He is currently an M.E. candi- date in School of Telecommunications Engineering of Xidian University. His research interests are the secu- rity and privacy in mobile social network and the privacy of RFID. Email: cht148213@gmail.com LI Hui, received his B.E. degree from Fudan University, China in 1990, Ph.D. degree in communication and electronic engineering from Xidian University, China in 1998. In 2009, he was with the Department of Ele- ctrical and Computer Engineering, University of Wate- rloo, Canada, as a visiting scholar. His research inter- ests include information security, coding theory and wireless network security. He served as TPC Co-Chair of ISPEC 2009 and IAS 2009, general Co-Chair of E-Forensic 2010, ProvSec 2011 and ISC 2011. Email: lihui@ mail.xidian.edu.cn