@misc{cryptoeprint:2014:082,
author = {Craig Gentry and Shai Halevi and Mariana Raykova and Daniel Wichs},
title = {Garbled RAM Revisited, Part I},
howpublished = {Cryptology ePrint Archive, Report 2014/082},
year = {2014},
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.