(1) Professor of Beijing Institute of Electronic Technology (200 1). He has served as deputy director of the Department of Electronic Information Engineering, director of the Department of Computer Science and Technology, and director of the Graduate Division.

(2) xidian university is an adjunct professor, xidian university is a doctoral supervisor (cryptography major) and xidian university is a master tutor (computer system structure and cryptography major).

(3) Adjunct Professor of Fujian Normal University

(4) Editorial Committee of Journal of Electronics and Journal of Communication.

(5) Expert in the special review/acceptance of information security technology in the information technology field of the National 863 Plan, and member of the expert advisory group of the overall group of the major scientific and technological project "Digital Rights Protection Technology R&D Plan" of the General Administration of Press and Publication.

(6) Received special government allowance from the State Council (200 1), the fourth "Top Ten Youth" in the General Office of the Central Committee of the CPC (2003), outstanding young backbone teachers in Beijing universities (1996), and member of the Third Youth Federation of the Central Committee (2005).

(7) Senior member of Chinese Institute of Electronics; Senior member of China Computer Federation, member of Information Storage Technology Committee of China Computer Federation, member of Information Privacy Committee of China Computer Federation, and member of E-government and Office Automation Committee of China Computer Federation.