Cryptology ePrint Archive: BibTeX Citation of Report 2015/386

@misc{cryptoeprint:2015:386,
    author = {David J. Wu and Tony Feng and Michael Naehrig and Kristin Lauter},
    title = {Privately Evaluating Decision Trees and Random Forests},
    howpublished = {Cryptology ePrint Archive, Report 2015/386},
    year = {2015},
    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.