@misc{cryptoeprint:2018:191,
    author = {Michael Backes and Lucjan Hanzlik and Kamil Kluczniak and Jonas Schneider},
    title = {Signatures with Flexible Public Key: A Unified Approach to Privacy-Preserving Signatures (Full Version)},
    howpublished = {Cryptology ePrint Archive, Report 2018/191},
    year = {2018},
    url = {https://eprint.iacr.org/2018/191},
}