@misc{cryptoeprint:2010:132,
author = {Junfeng Fan and Jens Hermans and Frederik Vercauteren},
title = {On the claimed privacy of EC-RAC III},
howpublished = {Cryptology ePrint Archive, Report 2010/132},
year = {2010},
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.