@misc{cryptoeprint:2006:386,
author = {Mark Wooding},
title = {The Wrestlers Protocol: A simple, practical, secure, deniable protocol for key-exchange},
howpublished = {Cryptology ePrint Archive, Report 2006/386},
year = {2006},
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.