@misc{cryptoeprint:2014:930,
author = {Dan Boneh and David J. Wu and Joe Zimmerman},
title = {Immunizing Multilinear Maps Against Zeroizing Attacks},
howpublished = {Cryptology ePrint Archive, Report 2014/930},
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.