Cryptology ePrint Archive: BibTeX Citation of Report 2006/375

@misc{cryptoeprint:2006:375,
    author = {Steven D. Galbraith and Jordi Pujol\`as and Christophe Ritzenthaler and Benjamin Smith},
    title = {Distortion maps for genus two curves},
    howpublished = {Cryptology ePrint Archive, Report 2006/375},
    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.