Cryptology ePrint Archive: BibTeX Citation of Report 2012/127

@misc{cryptoeprint:2012:127,
    author = {Deep Singh and Maheshanand Bhaintwal },
    title = {Additive autocorrelation of some classes of cubic semi-bent Boolean functions},
    howpublished = {Cryptology ePrint Archive, Report 2012/127},
    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.