@misc{cryptoeprint:2015:817,
author = {Varsha Bhat and Harsimran Singh and S.R.S. Iyengar},
title = {Secure Multi-party Graph Computation},
howpublished = {Cryptology ePrint Archive, Report 2015/817},
year = {2015},
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.