Cryptology ePrint Archive: BibTeX Citation of Report 2015/669

@misc{cryptoeprint:2015:669,
    author = {Ekawat Homsirikamol and William Diehl and Ahmed Ferozpuri and Farnoud Farahmand and Malik Umar Sharif and Kris Gaj},
    title = {GMU Hardware API for Authenticated Ciphers},
    howpublished = {Cryptology ePrint Archive, Report 2015/669},
    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.