The Gnuk Smartcard Based on the STM32F1x and Geehy APM32
Sign, authenticate and encrypt with a USB dongle at the cost of a soda. The goal here was to easily program around ~20 Gnuk devices at the budget of a single dongle of the commercial solution. Contains every step and fixes to get it running on current and next Ubuntu and Debian versions.
In plain words
Gnuk is a USB smartcard device based on STM32F1x and Geehy APM32 microcontrollers that performs cryptographic operations including signing, authentication, and encryption. Designed for developers and organizations needing affordable security tokens, it costs significantly less than commercial alternatives while enabling the programming of multiple devices at scale. The project includes complete setup instructions and compatibility fixes for current Ubuntu and Debian systems.
written from the facts on this page · September 2026
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