Cryptology ePrint Archive: BibTeX Citation of Report 2005/306

@misc{cryptoeprint:2005:306,
    author = {Yasuyuki MURAKAMI, Masao KASAHARA},
    title = {Murakami-Kasahara ID-based Key Sharing Scheme Revisited ---In Comparison with Maurer-Yacobi Schemes---},
    howpublished = {Cryptology ePrint Archive, Report 2005/306},
    year = {2005},
    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.