@misc{cryptoeprint:2009:099,
author = {Hugue Blier and Alain Tapp},
title = {A Single Initialization Server for Multi-Party Cryptography},
howpublished = {Cryptology ePrint Archive, Report 2009/099},
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.