Cryptology ePrint Archive: BibTeX Citation of Report 2014/999

@misc{cryptoeprint:2014:999,
    author = {Yongdae Kim and Hyunsoo Yoon},
    title = {First Experimental Result of Power Analysis Attacks on a FPGA Implementation of LEA},
    howpublished = {Cryptology ePrint Archive, Report 2014/999},
    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.