@misc{cryptoeprint:2009:483,
author = {Jean-Charles Faugère and Ludovic Perret },
title = {On the Security of UOV},
howpublished = {Cryptology ePrint Archive, Report 2009/483},
year = {2009},
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.