Cryptology ePrint Archive: BibTeX Citation of Report 2005/070

@misc{cryptoeprint:2005:070,
    author = {Jean-Camille Birget and Spyros S. Magliveras and Michal Sramka},
    title = {On public-key cryptosystems based on combinatorial group theory},
    howpublished = {Cryptology ePrint Archive, Report 2005/070},
    year = {2005},
    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.