Cryptology ePrint Archive: BibTeX Citation of Report 2014/534

@misc{cryptoeprint:2014:534,
    author = {Cong Chen and Thomas Eisenbarth and Ingo von Maurich and Rainer Steinwandt},
    title = {Differential Power Analysis of a McEliece Cryptosystem},
    howpublished = {Cryptology ePrint Archive, Report 2014/534},
    year = {2014},
    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.