@misc{cryptoeprint:2006:347,
author = {Fumiyuki Momose and Jinhui Chao},
title = {Classification of Weil Restrictions Obtained by (2,...,2) Coverings of P^1},
howpublished = {Cryptology ePrint Archive, Report 2006/347},
year = {2006},
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.