Cryptology ePrint Archive: BibTeX Citation of Report 2010/122

@misc{cryptoeprint:2010:122,
    author = {Akinori Kawachi and Akira Numayama and Keisuke Tanaka and Keita Xagawa},
    title = {Security of Encryption Schemes in Weakened Random Oracle Models},
    howpublished = {Cryptology ePrint Archive, Report 2010/122},
    year = {2010},
    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.