Cryptology ePrint Archive: BibTeX Citation of Report 2010/411

@misc{cryptoeprint:2010:411,
    author = {Vivien Dubois and Jean-Gabriel Kammerer},
    title = {Cryptanalysis of Cryptosystems Based on Noncommutative Skew Polynomials.},
    howpublished = {Cryptology ePrint Archive, Report 2010/411},
    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.