Cryptology ePrint Archive: BibTeX Citation of Report 2006/148

@misc{cryptoeprint:2006:148,
    author = {Akinori Kawachi and Takeshi Koshiba and Harumichi Nishimura and Tomoyuki Yamakami},
    title = {Computational Indistinguishability between Quantum States and Its Cryptographic Application},
    howpublished = {Cryptology ePrint Archive, Report 2006/148},
    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.