Cryptology ePrint Archive: BibTeX Citation of Report 2013/044

@misc{cryptoeprint:2013:044,
    author = {Fangguo Zhang and Xu Ma and Shengli Liu},
    title = {Efficient  Computation  Outsourcing for Inverting a Class of Homomorphic Functions},
    howpublished = {Cryptology ePrint Archive, Report 2013/044},
    year = {2013},
    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.