Cryptology ePrint Archive: BibTeX Citation of Report 2015/999

@misc{cryptoeprint:2015:999,
    author = {Robert Granger and Philipp Jovanovic and Bart Mennink and Samuel Neves},
    title = {Improved Masking for Tweakable Blockciphers with Applications to Authenticated Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2015/999},
    year = {2015},
    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.