Cryptology ePrint Archive: BibTeX Citation of Report 2012/226

@misc{cryptoeprint:2012:226,
    author = {Sarah Meiklejohn and C. Chris Erway and Alptekin Küpçü and Theodora Hinkle and Anna Lysyanskaya},
    title = {ZKPDL: A Language-Based System for Efficient Zero-Knowledge Proofs and Electronic Cash},
    howpublished = {Cryptology ePrint Archive, Report 2012/226},
    year = {2012},
    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.