Cryptology ePrint Archive: BibTeX Citation of Report 2011/538

@misc{cryptoeprint:2011:538,
    author = {Jia Xu and Ee-Chien Chang and Jianying Zhou},
    title = {Leakage-Resilient Client-side Deduplication of Encrypted Data in Cloud Storage},
    howpublished = {Cryptology ePrint Archive, Report 2011/538},
    year = {2011},
    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.