Cryptology ePrint Archive: BibTeX Citation of Report 2010/500

@misc{cryptoeprint:2010:500,
    author = {Konstantinos Chalkias and Foteini Baldimtsi and Dimitrios Hristu-Varsakelis and Spyros T. Halkidis and George Stephanides},
    title = {ATTACKS ON THE AKACP PROTOCOL},
    howpublished = {Cryptology ePrint Archive, Report 2010/500},
    year = {2010},
    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.