@misc{cryptoeprint:2001:067,
    author = {Jeff Jianxin Yan and Yongdong Wu},
    title = {An Attack on A Traitor Tracing Scheme},
    howpublished = {Cryptology ePrint Archive, Report 2001/067},
    year = {2001},
    url = {http://eprint.iacr.org/2001/067},
}