Cryptology ePrint Archive: BibTeX Citation of Report 2009/449

@misc{cryptoeprint:2009:449,
    author = {Stefan Mangard and Elisabeth Oswald and Francois-Xavier Standaert},
    title = {One for All - All for One: Unifying Standard DPA Attacks},
    howpublished = {Cryptology ePrint Archive, Report 2009/449},
    year = {2009},
    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.