@misc{cryptoeprint:2009:295,
    author = {Shucheng Yu and Kui Ren and Wenjing Lou and Jin Li},
    title = {Defending Against Key Abuse Attacks in KP-ABE Enabled Broadcast Systems},
    howpublished = {Cryptology ePrint Archive, Report 2009/295},
    year = {2009},
    url = {http://eprint.iacr.org/2009/295},
}