@misc{cryptoeprint:2009:549,
author = {Koji Nuida},
title = {Making Collusion-Secure Codes (More) Robust against Bit Erasure},
howpublished = {Cryptology ePrint Archive, Report 2009/549},
year = {2009},
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.