Cryptology ePrint Archive: BibTeX Citation of Report 2010/019

@misc{cryptoeprint:2010:019,
    author = {Jongsung Kim and Seokhie Hong and Bart Preneel and Eli Biham and Orr Dunkelman and Nathan Keller},
    title = {Related-Key Boomerang and Rectangle Attacks},
    howpublished = {Cryptology ePrint Archive, Report 2010/019},
    year = {2010},
    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.