@misc{cryptoeprint:2011:219,
author = {Tibor Jager, Florian Kohlar, Sven Schäge, and Jörg Schwenk },
title = {On the Security of TLS-DHE in the Standard Model},
howpublished = {Cryptology ePrint Archive, Report 2011/219},
year = {2011},
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.