@misc{cryptoeprint:2021:608,
    author = {Daniel R. L. Brown},
    title = {Layering diverse cryptography to lower future secret attack risks: post-quantum estimates},
    howpublished = {Cryptology ePrint Archive, Report 2021/608},
    year = {2021},
    url = {https://eprint.iacr.org/2021/608},
}