Cryptology ePrint Archive: BibTeX Citation of Report 2011/695

@misc{cryptoeprint:2011:695,
    author = {S. Sharmila Deva Selvi and S. Sree Vivek and C. Pandu Rangan},
    title = {Deterministic Identity Based Signature Scheme and its Application for Aggregate Signatures},
    howpublished = {Cryptology ePrint Archive, Report 2011/695},
    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.