Authors:
Rui Zhang and Hongwei Li, University of Electronic Science and Technology of China; Rui Wen, CISPA Helmholtz Center for Information Security; Wenbo Jiang and Yuan Zhang, University of Electronic Science and Technology of China; Michael Backes, CISPA Helmholtz Center for Information Security; Yun Shen, Netapp; Yang Zhang, CISPA Helmholtz Center for Information Security
