A paper accepted by IEEE ICDCS 2015 March 23 , 2015 June 8, 2017Taeho Lan Zhang, Taeho Jung, Cihang Liu, Xuan Ding, Xiang-Yang Li, Yunhao Liu “POP: Privacy-preserving Outsourced Photo Sharing and Searching for Mobile Devices” IEEE ICDCS, 2015