Cryptology ePrint Archive: BibTeX Citation of Report 2011/436

@misc{cryptoeprint:2011:436,
    author = {Yuanmi Chen and Phong Q. Nguyen},
    title = {Faster Algorithms for Approximate Common Divisors: Breaking Fully-Homomorphic-Encryption Challenges over the Integers},
    howpublished = {Cryptology ePrint Archive, Report 2011/436},
    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.