Secured personal notes using face recognition-based decryption

Abstract

Data are kept in our local database and used by the Android Note program. The data for this project was stored in a cloud database, and anyone with the necessary login information can view the data from any device. The data is encrypted using a monoalphabetic substitution cipher encryption method, which is also used for decryption, to increase security. However, the decryption process adds an extra layer of security with the aid of a machine learning model. The program requests that the user's face be recognized in order to the data decrypted; otherwise, data cannot be decrypted. Cloud-based info will be encrypted and kept safe.