@misc{cryptoeprint:2015:320,
author = {James Alderman and Christian Janson and Carlos Cid and Jason Crampton},
title = {Hybrid Publicly Verifiable Computation},
howpublished = {Cryptology ePrint Archive, Report 2015/320},
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.