A photo vault app that disguises as a calculator. Developed using Dagger 2, Butterknife, Glide. The coding architecture follows the MVP pattern.
- A simple calculator interface that also acts as the keypad to enter the vault PIN code.
- Decrypts the encrypted images and opens the photo vault when the PIN code and the selected activation button is pressed.
- Hides photo activity and removes all the temporary decrypted images whenever the app goes in background or device gets locked. Opens the calculator interface when restarted.
- A 256 bit secure encryption key is generated (using the PBKDF2 algorithm) based on the PIN code and a random salt.
- Image files are encrypted/decrypted using AES in GCM Mode
- New Initialization Vector (IV) is generated for each new photo and stored in the file name for later decryption.
