Cryptology ePrint Archive: BibTeX Citation of Report 2014/177

@misc{cryptoeprint:2014:177,
    author = {Valentina Banciu and Elisabeth Oswald},
    title = {Pragmatism vs. Elegance: comparing two approaches to Simple Power Attacks on AES},
    howpublished = {Cryptology ePrint Archive, Report 2014/177},
    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.