@misc{cryptoeprint:2007:337,
    author = {W. Bamberger and O. Welter and S. Spitz and M. Marhöfer},
    title = {Mobile Phones as Secure Gateways for Message-Based Ubiquitous Communication (Revised)},
    howpublished = {Cryptology ePrint Archive, Report 2007/337},
    year = {2007},
    url = {http://eprint.iacr.org/2007/337},
}