Ronald Cramer Goichiro Hanaoka Dennis Hofheinz Hideki Imai Eike Kiltz Rafael Pass Abhi Shelat Vinod Vaikuntanathan Bounded CCA2-Secure Encryption. 502-518 2007 ASIACRYPT http://dx.doi.org/10.1007/978-3-540-76900-2_31 db/conf/asiacrypt/asiacrypt2007.html#CramerHHIKPSV07