Cryptology ePrint Archive: BibTeX Citation of Report 2015/324

@misc{cryptoeprint:2015:324,
    author = {Divesh Aggarwal and Alexander Golovnev},
    title = {A Note on Lower Bounds for Non-interactive Message Authentication Using Weak Keys},
    howpublished = {Cryptology ePrint Archive, Report 2015/324},
    year = {2015},
    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.