Cryptology ePrint Archive: BibTeX Citation of Report 2006/195

@misc{cryptoeprint:2006:195,
    author = {Raylin Tso and Chunxiang Gu and Takeshi Okamoto and Eiji Okamoto},
    title = {An Efficient ID-based Digital Signature with Message Recovery Based on Pairing},
    howpublished = {Cryptology ePrint Archive, Report 2006/195},
    year = {2006},
    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.