Benny Applebaum Yuval Ishai Eyal Kushilevitz Cryptography in NC<sup>0</sup>. 166-175 2004 conf/focs/2004 FOCS http://csdl.computer.org/comp/proceedings/focs/2004/2228/00/22280166abs.htm db/conf/focs/focs2004.html#ApplebaumIK04