Cryptology ePrint Archive: BibTeX Citation of Report 2002/142

@misc{cryptoeprint:2002:142,
    author = {Greg Rose and Philip Hawkes},
    title = {On the Applicability of Distinguishing Attacks Against Stream Ciphers},
    howpublished = {Cryptology ePrint Archive, Report 2002/142},
    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.