Cryptology ePrint Archive: BibTeX Citation of Report 2007/271

@misc{cryptoeprint:2007:271,
    author = {Mihir Bellare and Thomas Ristenpart},
    title = {Hash Functions in the Dedicated-Key Setting: Design Choices and MPP Transforms},
    howpublished = {Cryptology ePrint Archive, Report 2007/271},
    year = {2007},
    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.