@misc{cryptoeprint:2017:566,
    author = {Matteo Campanelli and Rosario Gennaro and Steven Goldfeder and Luca Nizzardo},
    title = {Zero-Knowledge Contingent Payments Revisited: Attacks and Payments for Services},
    howpublished = {Cryptology ePrint Archive, Report 2017/566},
    year = {2017},
    url = {https://eprint.iacr.org/2017/566},
}