Cryptology ePrint Archive: BibTeX Citation of Report 2010/234

@misc{cryptoeprint:2010:234,
    author = {Yan Zhu, Huaixi Wang, Zexing Hu, Gail-Joon Ahn, Hongxin Hu, Stephen S. Yau},
    title = {Efficient provable data possession for hybrid clouds},
    howpublished = {Cryptology ePrint Archive, Report 2010/234},
    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.