Rosario Gennaro Yael Gertner Jonathan Katz Luca Trevisan Bounds on the Efficiency of Generic Cryptographic Constructions. 217-246 2005 35 SIAM J. Comput. 1 http://epubs.siam.org/SICOMP/volume-35/art_44327.html db/journals/siamcomp/siamcomp35.html#GennaroGKT05