@misc{cryptoeprint:2017:477,
    author = {Dan Boneh and Sam Kim and David J. Wu},
    title = {Constrained Keys for Invertible Pseudorandom Functions},
    howpublished = {Cryptology ePrint Archive, Report 2017/477},
    year = {2017},
    url = {https://eprint.iacr.org/2017/477},
}