Cryptology ePrint Archive: BibTeX Citation of Report 2006/173

@misc{cryptoeprint:2006:173,
    author = {Le Trieu Phong and Ogata Wakaha},
    title = {Some Practical Public-Key Encryption Schemes in both Standard Model and Random Oracle Model},
    howpublished = {Cryptology ePrint Archive, Report 2006/173},
    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.