Affiliation: | [1]Key Laboratory of Cryptologic Technology and Information Security, Ministry of Education, Shandong University, Jinan 250100, China [2]School of Mathemaiics,- Shandong Univers-ity,-Jinan 250100, China [3]Institute for Advanced Study, Tsinghua University, Beijing 100084, China [4]Department of Electrical Engineering and Computer Science, University of Wisconsin-Milwaukee, Milwaukee, WI53201, USA |