@misc{cryptoeprint:2019:221,
    author = {Shuichi Katsumata and Shota Yamada},
    title = {Group Signatures without NIZK: From Lattices in the Standard Model},
    howpublished = {Cryptology ePrint Archive, Report 2019/221},
    year = {2019},
    url = {https://eprint.iacr.org/2019/221},
}