@misc{cryptoeprint:2009:257,
    author = {Ulf T. Mattsson},
    title = {FORMAT CONTROLLING ENCRYPTION USING DATATYPE PRESERVING ENCRYPTION},
    howpublished = {Cryptology ePrint Archive, Report 2009/257},
    year = {2009},
    url = {http://eprint.iacr.org/2009/257},
}