ESP8266 version of Midbar utilizes the 3DES + AES + Blowfish + Serpent encryption algorithm alongside the ESP8266's built-in memory to store eight passwords and four credit cards in the encrypted form. It also utilizes the HMAC SHA-256 to verify the integrity of the stored logins.
ESP32 version of Midbar is a password, credit card, note, and phone number vault that utilizes a strong encryption algorithm (AES-256 + Serpent + AES-256) combined with a sophisticated embedded database (SQLite3) to keep your personal data safe.
The purpose of Midbar is to significantly increase the cost of unauthorized access to its user's personal data.
You can find the tutorial here:
ESP8266 Version: https://www.instructables.com/Midbar-ESP8266-Version/
ESP32 Version: https://www.instructables.com/Project-Midbar/