@misc{cryptoeprint:2015:922,
author = {Thalia M. Laing and Keith M. Martin and Maura B. Paterson and Douglas R. Stinson},
title = {Localised Multisecret Sharing},
howpublished = {Cryptology ePrint Archive, Report 2015/922},
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.