Cryptology ePrint Archive: BibTeX Citation of Report 2008/275

@misc{cryptoeprint:2008:275,
    author = {Joseph K. Liu \and Joonsang Baek \and Willy Susilo \and Jianying Zhou},
    title = {Certificate-Based Signature Schemes without Pairings or Random Oracles},
    howpublished = {Cryptology ePrint Archive, Report 2008/275},
    year = {2008},
    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.