@misc{cryptoeprint:2018:420,
    author = {Shuichi Katsumata and Takahiro Matsuda and Atsushi Takayasu},
    title = {Lattice-based Revocable (Hierarchical) IBE with Decryption Key Exposure Resistance},
    howpublished = {Cryptology ePrint Archive, Report 2018/420},
    year = {2018},
    url = {https://eprint.iacr.org/2018/420},
}