He received his B.Eng., M.Eng., and Ph.D. degrees in Computer Science and Cryptography from Xidian University, in 1998, 2005, and 2008, respectively. He is now a professor and member of the State Key Laboratory of Integrated Services Networks as well as a Professional Member of ACM and Senior Member of IEEE, Chinese Institute of Electronics and China Computer Federation. He is also the director of the Shaanxi Key Laboratory of Blockchain and Secure Computing. His research interests include Digital Contents Protection and Wireless Networks and Security.