Cryptology ePrint Archive: BibTeX Citation of Report 2014/119

@misc{cryptoeprint:2014:119,
    author = {Robert Granger and Thorsten Kleinjung and Jens Zumbr\"agel},
    title = {Breaking `128-bit Secure' Supersingular Binary Curves (or how to solve discrete logarithms in ${\mathbb F}_{2^{4 \cdot 1223}}$ and ${\mathbb F}_{2^{12 \cdot 367}}$)},
    howpublished = {Cryptology ePrint Archive, Report 2014/119},
    year = {2014},
    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.