Cryptology ePrint Archive: BibTeX Citation of Report 2011/012

@misc{cryptoeprint:2011:012,
    author = {Jens Groth},
    title = {Minimizing Non-interactive Zero-Knowledge Proofs Using Fully Homomorphic Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2011/012},
    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.