@misc{cryptoeprint:2012:441,
author = {Sanjam Garg and Amit Sahai},
title = {Adaptively Secure Multi-Party Computation with Dishonest Majority},
howpublished = {Cryptology ePrint Archive, Report 2012/441},
year = {2012},
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.