Cryptology ePrint Archive: BibTeX Citation of Report 2002/126

@misc{cryptoeprint:2002:126,
    author = {Ahmad-Reza Sadeghi and Michael Steiner},
    title = {Assumptions Related to Discrete Logarithms: Why Subtleties Make a Real Difference},
    howpublished = {Cryptology ePrint Archive, Report 2002/126},
    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.