A version of Midbar data vault adapted for the ESP32 CYD and WebFlash. It keeps the cryptographic keys in the ESP32 RAM and stores the ciphertexts (encrypted data) in the Google Firebase.
The tutorial is available at: https://www.instructables.com/How-to-Turn-ESP32-CYD-Into-a-Secure-IoT-Data-Vault/
WebFlash for ESP32-CYD: https://northstrix.github.io/Midbar-ESP32-CYD-Firebase-Edition/flash
WebFlash for ESP32-CYD2USB: https://northstrix.github.io/Midbar-ESP32-CYD2USB-Firebase-Edition/flash