@misc{cryptoeprint:2017:499,
    author = {Fuchun Guo and Rongmao Chen and Willy Susilo and Jianchang Lai and Guomin Yang and Yi Mu},
    title = {Optimal Security Reductions for Unique Signatures: Bypassing Impossibilities with A Counterexample},
    howpublished = {Cryptology ePrint Archive, Report 2017/499},
    year = {2017},
    url = {https://eprint.iacr.org/2017/499},
}