2 layers45.9 × 14.2 mm

KiCad boards from 3 GitHub repositories tagged “cryptography”, the most starred first; open any of them in PCBKit.



quantrng/quantrng.github.io
Hardware Quantum Random Number Generator (QRNG) based on avalanche transistor noise and FT232H / MCU interface. Open-source hardware, KiCad schematics, and Python entropy testing scripts.