Cryptology ePrint Archive: BibTeX Citation of Report 2012/409

@misc{cryptoeprint:2012:409,
    author = {Rafael Misoczki and Jean-Pierre Tillich and Nicolas Sendrier and Paulo S. L. M. Barreto},
    title = {MDPC-McEliece: New McEliece Variants from Moderate Density Parity-Check Codes},
    howpublished = {Cryptology ePrint Archive, Report 2012/409},
    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.