Cryptology ePrint Archive: BibTeX Citation of Report 2014/233

@misc{cryptoeprint:2014:233,
    author = {Yark{\i}n Dor\"{o}z, Aria Shahverdi, Thomas Eisenbarth, and Berk Sunar},
    title = {Toward Practical Homomorphic Evaluation of Block Ciphers Using Prince},
    howpublished = {Cryptology ePrint Archive, Report 2014/233},
    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.