@misc{cryptoeprint:2004:021,
author = {Claude Barral and Jean-S\'{e}bastien Coron and David Naccache},
title = {Externalized Fingerprint Matching},
howpublished = {Cryptology ePrint Archive, Report 2004/021},
year = {2004},
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.