Cryptology ePrint Archive: BibTeX Citation of Report 2011/350

@misc{cryptoeprint:2011:350,
    author = {Carl Bosley and Kristiyan Haralambiev and Antonio Nicolosi},
    title = {$HB^N$: An HB-like protocol secure against man-in-the-middle attacks},
    howpublished = {Cryptology ePrint Archive, Report 2011/350},
    year = {2011},
    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.