@misc{cryptoeprint:2012:377,
author = {Aniket Kate and Yizhou Huang and Ian Goldberg},
title = {Distributed Key Generation in the Wild},
howpublished = {Cryptology ePrint Archive, Report 2012/377},
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.