@misc{cryptoeprint:2019:031,
    author = {Rishab Goyal and Satyanarayana Vusirikala and Brent Waters},
    title = {Collusion Resistant Broadcast and Trace from Positional Witness Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2019/031},
    year = {2019},
    url = {https://eprint.iacr.org/2019/031},
}