Cryptology ePrint Archive: BibTeX Citation of Report 2014/498

@misc{cryptoeprint:2014:498,
    author = {Souvik Kolay and Debdeep Mukhopadhyay},
    title = {Lightweight Diffusion Layer from the $k^{th}$ root of the MDS Matrix},
    howpublished = {Cryptology ePrint Archive, Report 2014/498},
    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.