@misc{cryptoeprint:2008:383,
    author = {Craig Gentry and Shai Halevi},
    title = {Hierarchical Identity Based Encryption with Polynomially Many Levels},
    howpublished = {Cryptology ePrint Archive, Report 2008/383},
    year = {2008},
    url = {http://eprint.iacr.org/2008/383},
}