Cryptology ePrint Archive: BibTeX Citation of Report 2007/419

@misc{cryptoeprint:2007:419,
    author = {Leo Dorrendorf and Zvi Gutterman and Benny Pinkas},
    title = {Cryptanalysis of the Random Number Generator of the Windows Operating System},
    howpublished = {Cryptology ePrint Archive, Report 2007/419},
    year = {2007},
    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.