Cryptology ePrint Archive: BibTeX Citation of Report 2005/428

@misc{cryptoeprint:2005:428,
    author = {Michael T. Goodrich, Michael Sirivianos, John Solis, Gene Tsudik and Ersin Uzun},
    title = {Loud and Clear: Human-Verifiable Authentication Based on Audio},
    howpublished = {Cryptology ePrint Archive, Report 2005/428},
    year = {2005},
    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.