@misc{cryptoeprint:2011:283,
author = {Mingqiang Wang and Xiaoyun Wang and Tao Zhan},
title = {The Fault Attack ECDLP Revisited},
howpublished = {Cryptology ePrint Archive, Report 2011/283},
year = {2011},
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.