作者机构:[1]State Key Laboratory of Information Security, the Graduate School of Chinese Academy of Sciences, Beijing 100039, China
相关基金:supported by the National Key Foundation Rcsearch "973" project (No.G 1999035802) and the National Natural Science Foundation of China (No.60273027).
Communication author: Ma Weiju, born in 1978, male, Ph.D. candidate. State Key Laboratory of Information Security, the Graduate School of Chinese Academy of Sciences, Beijing 100039, China. weijuma@sohu.com.