中文摘要：

CHEN Hefeng, is a Ph.D. candidate at Xidian Uni- versity. Her curent research focuses on cryptography and information security. E-mail： chenhefeng1118 @163.com MA Wenping, is a professor and Ph.D. supervisor in the School of Communication Engineering at Xidian University. His research interests include network and information security, cryptography. E-mail： wp_ma@ mail.xidian.edu.cn ZHANG Chengli, is a Ph.D. candidate at Xidian University. Her research interests include information security, cryptography. E-mail： zcl0719 @163.com SUN Changxia, is an associate professor in the Information and Management Sciences School at Henan Agricultural University. Her research interests include information security and cryptography. E-mail： sunchang_xia@126.com