Cryptology ePrint Archive: BibTeX Citation of Report 2009/298

@misc{cryptoeprint:2009:298,
    author = {S.Sharmila Deva Selvi and S.Sree Vivek and C.Pandu Rangan},
    title = {Cryptanalysis of Certificateless Signcryption Schemes and an Efficient Construction Without Pairing},
    howpublished = {Cryptology ePrint Archive, Report 2009/298},
    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.