@misc{cryptoeprint:2021:640,
    author = {Marc Schink and Alexander Wagner and Florian Unterstein and Johann Heyszl},
    title = {Security and Trust in Open Source Security Tokens},
    howpublished = {Cryptology ePrint Archive, Report 2021/640},
    year = {2021},
    url = {https://eprint.iacr.org/2021/640},
}