Cryptology ePrint Archive: BibTeX Citation of Report 2014/761

@misc{cryptoeprint:2014:761,
    author = {Qingju Wang and Zhiqiang Liu and Kerem Varici and Yu Sasaki and Vincent Rijmen and Yosuke Todo},
    title = {Cryptanalysis of Reduced-round SIMON32 and SIMON48},
    howpublished = {Cryptology ePrint Archive, Report 2014/761},
    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.