@misc{cryptoeprint:2007:092,
author = {Grzegorz Wojtenko},
title = {PRIME POINTS ON ELLIPTIC CURVES AND ITS IMPACT ON ECDLP},
howpublished = {Cryptology ePrint Archive, Report 2007/092},
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.