@misc{cryptoeprint:2012:670,
    author = {Joppe W. Bos and Craig Costello and Huseyin Hisil and Kristin Lauter},
    title = {Two is Greater than One},
    howpublished = {Cryptology ePrint Archive, Report 2012/670},
    year = {2012},
    url = {http://eprint.iacr.org/2012/670},
}