Cryptology ePrint Archive: BibTeX Citation of Report 2007/049

@misc{cryptoeprint:2007:049,
    author = {jin zhou and ya-juan zhang and yue-fei zhu},
    title = {Security Arguments for a Class of ID-based Signatures},
    howpublished = {Cryptology ePrint Archive, Report 2007/049},
    year = {2007},
    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.