Cryptology ePrint Archive: BibTeX Citation of Report 2011/187

@misc{cryptoeprint:2011:187,
    author = {Hyung Tae Lee and Jung Hee Cheon and Jin Hong},
    title = {Accelerating ID-based Encryption based on Trapdoor DL using Pre-computation},
    howpublished = {Cryptology ePrint Archive, Report 2011/187},
    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.