Cryptology ePrint Archive: BibTeX Citation of Report 2005/142

@misc{cryptoeprint:2005:142,
    author = {Mahalingam Ramkumar},
    title = {Broadcast Encryption with Random Key Pre-distribution Schemes},
    howpublished = {Cryptology ePrint Archive, Report 2005/142},
    year = {2005},
    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.