@misc{cryptoeprint:2013:042,
author = {Hemanta K. Maji and Manoj Prabhakaran and Mike Rosulek},
title = {Complexity of Multi-Party Computation Functionalities},
howpublished = {Cryptology ePrint Archive, Report 2013/042},
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.