Cryptology ePrint Archive: BibTeX Citation of Report 2015/832

@misc{cryptoeprint:2015:832,
    author = {David McCann, Kerstin Eder, Elisabeth Oswald},
    title = {Characterising and Comparing the Energy Consumption of Side Channel Attack Countermeasures and Lightweight Cryptography on Embedded Devices},
    howpublished = {Cryptology ePrint Archive, Report 2015/832},
    year = {2015},
    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.