@misc{cryptoeprint:2014:777,
author = {Koji Nuida and Kaoru Kurosawa},
title = {(Batch) Fully Homomorphic Encryption over Integers for Non-Binary Message Spaces},
howpublished = {Cryptology ePrint Archive, Report 2014/777},
year = {2014},
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.