Cryptology ePrint Archive: BibTeX Citation of Report 2007/416

@misc{cryptoeprint:2007:416,
    author = {Donghoon Chang,  Mridul Nandi, Jesang Lee, Jaechul Sung and Seokhie Hong},
    title = {Compression Function Design Principles Supporting Variable Output Lengths from a Single Small Function},
    howpublished = {Cryptology ePrint Archive, Report 2007/416},
    year = {2007},
    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.