1. Westone Cryptologic Research Center, Westone Information Industry Inc. Beijing China
2. State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing China
3. Yanqi Lake Beijing Institute of Mathematical Sciences and Applications Beijing China
4. Department of Computer Science and Engineering, Chalmers University of Technology Gothenburg Sweden
5. School of Computer Science, University of St. Gallen St. Gallen Switzerland
6. School of Cyber Security University of Chinese Academy of Sciences Beijing China