Cryptology ePrint Archive: BibTeX Citation of Report 2011/161

@misc{cryptoeprint:2011:161,
    author = {Debrup Chakraborty and  Cuauhtemoc Mancillas-Lopez and Francisco Rodriguez-Henriquez and Palash Sarkar},
    title = {Efficient Hardware Implementations of BRW Polynomials and Tweakable Enciphering Schemes},
    howpublished = {Cryptology ePrint Archive, Report 2011/161},
    year = {2011},
    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.