tenth-package0/mezgeb

Offline-first encrypted photo and file vault with Ethiopian calendar organization. # Mezgeb Mezgeb is an offline-first Flutter app for protecting photos and files locally, with Ethiopian calendar dates and a choice of clean modern themes. ## Why Mezgeb Private memories should not require a cloud account. Mezgeb keeps its core vault workflow on the device while adding Ethiopian calendar organization for people who want their files presented in a culturally familiar timeline. The app does not request internet access, use analytics, show ads, or create user accounts. ## Run ```powershell flutter pub get flutter run ``` If no Android phone or emulator appears, run: ```powershell flutter devices flutter emulators ``` ## Verify ```powershell flutter analyze flutter test flutter build apk --debug ``` Format and analyze changes before opening a pull request: ```sh dart format --output=none --set-exit-if-changed lib test flutter analyze flutter test ``` The debug APK is built at: ```text build/app/outputs/flutter-apk/app-debug.apk ``` ## Current v1 - Flutter app named `Mezgeb` - PIN onboarding and PIN unlock - Biometric/device auth through `local_auth` - `FLAG_SECURE` enabled in the Android host activity - SQLCipher-backed metadata database - AES-GCM encrypted files in app-private storage - Android system document picker through a small MethodChannel - Ethiopian calendar converter with Amharic month names - Timeline year/month/day browsing with pinch zoom-out - Albums, fullscreen viewer, Settings, and theme picker - Themes: One Light, Sky Glass, Forest, Rose, Midnight ## Security Design - PINs are derived with PBKDF2-HMAC-SHA256 and a random per-user salt - Encryption keys are generated with a cryptographically secure random source - Keys are stored through Android secure storage - File contents use AES-GCM authenticated encryption - Metadata is stored in a SQLCipher-backed database - Screenshots and app-switcher previews are blocked with `FLAG_SECURE` - The app locks when moved to the background This project has not received an independ …