ESP32 POTP (Portable Google Authenticator)

[status: in developing]

Portable EAP Protected One-Time Password (EAP-POTP) or GoogleAuthenticator hardware for provides two-factor user authentication. This is a PlatformIO DIY project for WeMOS like board with ESP32 and OLED SSD1306 display, see materials and instructions below.

Development Status:

• WifiManager
• Wifi OTA Handler
• DeepSleep mode (testing)
• GUI overlay tests
• RFC 4793 implementation
• Sync RTC via Bluetooth
• GUI Page viewer for OTP codes
• Android GoogleAuth POTP sync
• Vulnerability security test
• 3D print case?
• Resina case?
• Latex case?

DIY Building

Dependencies

Please install before, PlatformIO open source ecosystem for IoT development.

Compile and firmware upload

Setup WiFi

Setup your WiFi on secrets.load and run:

git clone https://github.com/hpsaturn/esp32_wemos_oled.git
cd esp32_wemos_oled
cp secrets.load.sample secrets.load
chmod 755 secrets.load

Compile firmware and deploy

platformio run --target upload

OTA Updates (Optional)

For faster firmware updates via air (OTA)

platformio run --target upload --upload-port 192.168.1.107

Library installation Troubleshooting

if you have the next error:

src/Main.cpp:27:18: fatal error: sha1.h: No such file or directory
compilation terminated.

it is because the TOTP Arduino library is broken, please clean and remove hidden directories with rm -rf .pioenvs .piolibdeps and run git pull origin master again.

Basic Connection

Board WeMOS like OLED: