@misc{cryptoeprint:2015:827,
    author = {Geumsook Ryu and Kwangsu Lee and Seunghwan Park and Dong Hoon Lee},
    title = {Unbounded Hierarchical Identity-Based Encryption with Efficient Revocation},
    howpublished = {Cryptology ePrint Archive, Report 2015/827},
    year = {2015},
    url = {https://eprint.iacr.org/2015/827},
}