@misc{cryptoeprint:2013:530,
author = {Ivica Nikolic and Lei Wang and Shuang Wu},
title = {The Parallel-Cut Meet-In-The-Middle Attack},
howpublished = {Cryptology ePrint Archive, Report 2013/530},
year = {2013},
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.