Cryptology ePrint Archive: BibTeX Citation of Report 2014/524

@misc{cryptoeprint:2014:524,
    author = {Chunming Tang and Yanfeng Qi},
    title = {Constructing hyper-bent functions from Boolean functions with the Walsh spectrum taking the same value twice},
    howpublished = {Cryptology ePrint Archive, Report 2014/524},
    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.