Cryptology ePrint Archive: BibTeX Citation of Report 2009/290

@misc{cryptoeprint:2009:290,
    author = {S.Sharmila Deva Selvi and S.Sree Vivek and J.Shriram and S.Kalaivani and C.Pandu Rangan},
    title = {Security Analysis of Aggregate signature and Batch verification signature schemes},
    howpublished = {Cryptology ePrint Archive, Report 2009/290},
    year = {2009},
    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.