Gnuk Fst 01

GnuK FST-01


The GnuK FST-01 is an STM23 based personal HSM solution available for all typical GPG workflows such as SSH, code/binary/email signing, encryption, etc.

  • 100% of source code and hardware design is public and auditable
  • Design is simple and you can make one at home with inexpensive tooling
  • Firmware can be updated
  • Unusable for Second Factor Authentication (2FA) in most services.
    • No support for Challenge/Response, WebAuthN, U2F, TOTP, etc.
  • Information on supply chain integrity practices are not made public.
  • Does not support physical touch allowing a remote attacker unlimited uses
  • Entropy source is controlled entirely by ARM