Cryptology ePrint Archive: BibTeX Citation of Report 2015/423

@misc{cryptoeprint:2015:423,
    author       = {Santosh Ghosh, Amit Kumar, Amitabh Das and
		    Ingrid Verbauwhede},
    title        = {On the Implementation of Unified Arithmetic on Binary Huff Curves},
    howpublished = {Cryptology ePrint Archive, Report 2015/423},
    year         = {2015},
    note         = {\url{https://ia.cr/2015/423}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.