@misc{cryptoeprint:2019:058,
    author = {Roman Langrehr and Jiaxin Pan},
    title = {Tightly secure hierarchical identity-based encryption},
    howpublished = {Cryptology ePrint Archive, Report 2019/058},
    year = {2019},
    url = {https://eprint.iacr.org/2019/058},
}