Cryptology ePrint Archive: BibTeX Citation of Report 2009/454

@misc{cryptoeprint:2009:454,
    author = {Jacob C. N. Schuldt and Kanta Matsuura},
    title = {An Efficient Convertible Undeniable Signature Scheme with Delegatable Verification},
    howpublished = {Cryptology ePrint Archive, Report 2009/454},
    year = {2009},
    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.