Cryptology ePrint Archive: BibTeX Citation of Report 2011/309

@misc{cryptoeprint:2011:309,
    author = {Frederik Armknecht and  Daniel Augot and Ludovic Perret and Ahmad-Reza Sadeghi},
    title = {On Constructing Homomorphic Encryption Schemes from Coding Theory},
    howpublished = {Cryptology ePrint Archive, Report 2011/309},
    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.