Cryptology ePrint Archive: BibTeX Citation of Report 2006/028

@misc{cryptoeprint:2006:028,
    author = {Thulasi Goriparthi, Manik Lal Das, Atul Negi and Ashutosh Saxena},
    title = {Cryptanalysis of recently proposed Remote User Authentication Schemes},
    howpublished = {Cryptology ePrint Archive, Report 2006/028},
    year = {2006},
    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.