Cryptology ePrint Archive: BibTeX Citation of Report 2010/474

@misc{cryptoeprint:2010:474,
    author = {Sarah Meiklejohn and Hovav Shacham and David Mandell Freeman},
    title = {Limitations on Transformations from Composite-Order to Prime-Order Groups: The Case of Round-Optimal Blind Signatures},
    howpublished = {Cryptology ePrint Archive, Report 2010/474},
    year = {2010},
    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.