Cryptology ePrint Archive: BibTeX Citation of Report 2012/396

@misc{cryptoeprint:2012:396,
    author = {Brajesh Kumar Singh },
    title = {On second-order nonlinearity and maximum algebraic immunity of some bent functions in $\cP S^+$},
    howpublished = {Cryptology ePrint Archive, Report 2012/396},
    year = {2012},
    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.