@misc{cryptoeprint:2015:752,
author = {Gilad Asharov and Gil Segev},
title = {On Constructing One-Way Permutations from Indistinguishability Obfuscation},
howpublished = {Cryptology ePrint Archive, Report 2015/752},
year = {2015},
note = {\url{http://eprint.iacr.org/}},
}
You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.