Cryptology ePrint Archive: BibTeX Citation of Report 2003/110

@misc{cryptoeprint:2003:110,
    author = {Yukio Itakura and Shigeo Tsujii},
    title = {Proposal on Personal Authentication System in which Biological Information is embedded in Cryptosystem Key},
    howpublished = {Cryptology ePrint Archive, Report 2003/110},
    year = {2003},
    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.