Cryptology ePrint Archive: BibTeX Citation of Report 2015/454

@misc{cryptoeprint:2015:454,
    author = {Oscar Garcia-Morchon and Ronald Rietman and Sahil Sharma and Ludo Tolhuizen and Jose Luis Torre-Arce},
    title = {A comprehensive and lightweight security architecture to secure the IoT throughout the lifecycle of a device based on HIMMO},
    howpublished = {Cryptology ePrint Archive, Report 2015/454},
    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.