Cryptology ePrint Archive: BibTeX Citation of Report 2011/120

@misc{cryptoeprint:2011:120,
    author = {Daniel J. Bernstein and Tanja Lange and Christiane Peters and Peter Schwabe},
    title = {Faster 2-regular information-set decoding},
    howpublished = {Cryptology ePrint Archive, Report 2011/120},
    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.