@misc{cryptoeprint:2012:379,
author = {Eiichiro Fujisaki},
title = {All-But-Many Encryption: A New Framework for Fully-Equipped UC Commitments},
howpublished = {Cryptology ePrint Archive, Report 2012/379},
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.