@misc{cryptoeprint:2015:1167,
    author = {Dan Boneh and Kevin Lewi and David J. Wu},
    title = {Constraining Pseudorandom Functions Privately},
    howpublished = {Cryptology ePrint Archive, Report 2015/1167},
    year = {2015},
    url = {https://eprint.iacr.org/2015/1167},
}