Sabrina De Capitani di Vimercati Sara Foresti Sushil Jajodia Stefano Paraboschi Gerardo Pelosi Pierangela Samarati Encryption-Based Policy Enforcement for Cloud Storage. 42-51 2010 ICDCS Workshops http://dx.doi.org/10.1109/ICDCSW.2010.35 conf/icdcsw/2010 db/conf/icdcsw/icdcsw2010.html#VimercatiFJPPS10