Benny Applebaum Yuval Ishai Eyal Kushilevitz Cryptography in NC<sup>0</sup>. 845-888 2006 36 SIAM J. Comput. 4 http://dx.doi.org/10.1137/S0097539705446950 db/journals/siamcomp/siamcomp36.html#ApplebaumIK06