@misc{cryptoeprint:2009:385,
    author = {Brent Waters},
    title = {Dual System Encryption: Realizing Fully Secure IBE and HIBE under Simple Assumptions},
    howpublished = {Cryptology ePrint Archive, Report 2009/385},
    year = {2009},
    url = {http://eprint.iacr.org/2009/385},
}