@misc{cryptoeprint:2007:011,
author = {Jin Zhou and TingMao Chang and YaJuan Zhang and YueFei Zhu},
title = {Universally Composable Key-evolving Signature},
howpublished = {Cryptology ePrint Archive, Report 2007/011},
year = {2007},
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.