Cryptology ePrint Archive: BibTeX Citation of Report 2002/070

@misc{cryptoeprint:2002:070,
    author = {Jens-Matthias Bohli and Maria Isabel Gonzalez Vasco and Consuelo Martinez and Rainer Steinwandt},
    title = {Weak Keys in MST1},
    howpublished = {Cryptology ePrint Archive, Report 2002/070},
    year = {2002},
    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.