@misc{cryptoeprint:2018:1221,
    author = {M. Delcourt and T. Kleinjung and A.K. Lenstra and S. Nath and D. Page and N. Smart},
    title = {Using the Cloud to Determine Key Strengths -- Triennial Update},
    howpublished = {Cryptology ePrint Archive, Report 2018/1221},
    year = {2018},
    url = {https://eprint.iacr.org/2018/1221},
}