@misc{cryptoeprint:2012:219,
author = {Siamak F. Shahandashti and Reihaneh Safavi-Naini and Philip Ogunbona},
title = {Private Fingerprint Matching},
howpublished = {Cryptology ePrint Archive, Report 2012/219},
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.