@misc{cryptoeprint:2005:155,
    author = {Eli Biham and Jennifer Seberry},
    title = {Py (Roo): A Fast and Secure Stream Cipher using Rolling Arrays},
    howpublished = {Cryptology ePrint Archive, Report 2005/155},
    year = {2005},
    url = {http://eprint.iacr.org/2005/155},
}