@misc{cryptoeprint:2010:210,
    author = {Yu  Chen},
    title = {Fully Secure Identity-Based Encryption Without Random Oracles: A variant of Boneh-Boyen HIBE },
    howpublished = {Cryptology ePrint Archive, Report 2010/210},
    year = {2010},
    url = {http://eprint.iacr.org/2010/210},
}