@misc{cryptoeprint:2000:001,
author = {Oded Goldreich },
title = {On Security Preserving Reductions -- Revised Terminology },
howpublished = {Cryptology ePrint Archive, Report 2000/001},
year = {2000},
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.