Cryptology ePrint Archive: BibTeX Citation of Report 2010/220

@misc{cryptoeprint:2010:220,
    author = {Giuseppe Ateniese and Emiliano De Cristofaro and Gene Tsudik},
    title = {(If) Size Matters: Size-Hiding Private Set Intersection},
    howpublished = {Cryptology ePrint Archive, Report 2010/220},
    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.