@misc{cryptoeprint:2014:108,
author = {Jooyoung Lee and Martijn Stam},
title = {MJH: A Faster Alternative to MDC-2},
howpublished = {Cryptology ePrint Archive, Report 2014/108},
year = {2014},
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.