@misc{cryptoeprint:2016:157,
    author = {Maciej Skorski},
    title = {Key Derivation for Squared-Friendly Applications: Lower Bounds},
    howpublished = {Cryptology ePrint Archive, Report 2016/157},
    year = {2016},
    url = {https://eprint.iacr.org/2016/157},
}