@misc{cryptoeprint:2019:382,
    author = {Daniel Gardham and Mark Manulis},
    title = {Hierarchical Attribute-based Signatures: Short Keys and Optimal Signature Length},
    howpublished = {Cryptology ePrint Archive, Report 2019/382},
    year = {2019},
    url = {https://eprint.iacr.org/2019/382},
}