🔐 Military-grade file encryption for Android. AES-256-GCM with Argon2id, biometric unlock, and background batch processing. 100% offline.
| Home Screen | Encryption | Settings | History |
|---|---|---|---|
 |
 |
 |
 |
| Quick Actions | Choose Security Level | Customize App | Track Operations |
- 🔒 Unbreakable Encryption: AES-256-GCM with Argon2id key derivation
- 👆 Biometric Unlock: Quick access with fingerprint or face recognition
- 🚀 Background Processing: Encrypt large files without blocking your device
- 🎨 Modern UI: Beautiful Material Design 3 interface
- 🌙 Theme Support: Light, Dark, and Material You dynamic colors
- 📁 Batch Operations: Encrypt multiple files or entire folders at once
- 🔐 App Lock: Protect the app itself with authentication
- 💾 Secure Delete: Overwrite originals with random data before deletion
Built with modern Android best practices:
- Kotlin with Coroutines and Flow
- Jetpack Compose for modern declarative UI
- Hilt for dependency injection
- MVVM architecture with Clean Architecture principles
- WorkManager for reliable background processing
- Android Keystore for secure key storage
- AES-256-GCM: Industry-standard authenticated encryption
- Argon2id: Memory-hard key derivation (resistant to GPU/ASIC attacks)
- Biometric Authentication: Fingerprint/Face unlock
- Secure Key Storage: Hardware-backed Android Keystore
- Secure Delete: DoD 5220.22-M style data overwriting
- 100% Offline: No network permissions, all processing local
- Android 8.0 (API 26) or higher
- Kotlin knowledge for development
./gradlew assembleDebugadb install app/build/outputs/apk/debug/app-debug.apkobfesc/
├── app/src/main/java/com/obfs/encrypt/
│ ├── crypto/ # Encryption core (AES-256-GCM, Argon2id)
│ ├── data/ # Data layer (Room database, repositories)
│ ├── di/ # Dependency injection (Hilt modules)
│ ├── security/ # Security features (biometrics, app lock)
│ ├── services/ # Background services (WorkManager)
│ ├── ui/ # UI layer (Compose screens)
│ └── viewmodel/ # ViewModels
├── docs/
│ └── screenshots/ # App screenshots
└── gradle/ # Build configuration
Contributions are welcome! Please read the CONTRIBUTING.md guidelines.
- In the app: Settings → Support → Report a bug
- Add a short description, then Share or Copy
- Open a GitHub issue using the Bug report template and paste the diagnostics
The report is built on-device and never includes passwords, keys, file contents, or full file paths. See docs/BUG_REPORTING.md for the privacy contract and developer triage guide.
Licensed under the Apache License 2.0. See LICENSE for details.
For security vulnerabilities, please see SECURITY.md.
Your files deserve military-grade protection.