Po-Wen ChiCHIN-LAUNG LEI2018-09-102018-09-102015-01http://scholars.lib.ntu.edu.tw/handle/123456789/394567[SDGs]SDG16Audit-Free Cloud Storage via Deniable Attribute-based Encryptionjournal article10.1109/TCC.2015.24248822-s2.0-84979740049