@misc{cryptoeprint:2011:021,
    author = {Jae Hong Seo and Jung Hee Cheon},
    title = {Fully Secure Anonymous Hierarchical Identity-Based  Encryption with Constant Size Ciphertexts},
    howpublished = {Cryptology ePrint Archive, Report 2011/021},
    year = {2011},
    url = {http://eprint.iacr.org/2011/021},
}