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Key Crypt

  • A demonstration of Onboard Keystroke Encryption
  • This keyboard is an attempt to close a large vulnerability in secure text input by encrypting keystrokes before they enter a host operating system.

Keyboard

Features

  • Secure input and local encryption on the keyboard's processor.
  • No driver software needed, all work is done locally in QMK.
  • Clear visual menus and settings onboard.
  • Sample console software for live decryption.

Repository organization

  • Hardware
    • Design files for top plate and case
    • Wiring diagram
    • Key layout editor data
    • Hardware assembly instructions and photos
  • Software
    • Makefile
    • aes.c (an implementation of AES in c)
    • aes.h
    • screens.c (a console that mimics the oled of the keyboard)
    • screens.h
    • tests.py (testing file for AES verification)
    • translate.py
    • demo.py (simple decryption app)
    • Console applications / hid listeners (in progress)
  • Firmware
    • keymaps/default
      • config.h
      • keymap.c
      • readme.md
    • aes.c
    • aes.h
    • config.h
    • key_crypt.c
    • key_crypt.h
    • info.json
    • readme.md
    • rules.mk

Credits

See bibliography for more comprehensive listings and citations

  • Eric Roberts - for advising me, providing feedback and guidance
  • Jay Ewing - for help with hardware design, planning and assembly
  • NIST - for clear and helpful documentation for AES encryption and decryption
  • QMK - for creating a strong open source foundation for keyboard programming
  • PDXKBC - for providing feedback on design and usability

License

MIT

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Onboard Keystroke Encryption for Secure Entry

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