Eike Kiltz Krzysztof Pietrzak Martijn Stam Moti Yung A New Randomness Extraction Paradigm for Hybrid Encryption. 590-609 2009 EUROCRYPT http://dx.doi.org/10.1007/978-3-642-01001-9_34 conf/eurocrypt/2009 db/conf/eurocrypt/eurocrypt2009.html#KiltzPSY09