Hardware-Hardened App Lock Engine
RootLock protects your sensitive banking, message, and authentication applications with isolated credentials. Powered by an offline native C++ PBKDF2 cryptography engine, it verifies access credentials locally, keeping your master pins safely zeroed out of system memory.
App Launch
Foreground service intercepts launch context
Prompt Overlay
Displays glassmorphic credentials pad
JNI Bridge
Kotlin transfers candidate keys to C++ heap
PBKDF2 Compute
Hardened cryptography verify checks hash
Memory Purge
Sensitive buffers are instantly zeroed and freed
Hardened Cryptography Core
- Native Verifier: Full PBKDF2-HMAC-SHA512 verification lives inside isolated C++17 JNI.
- Memory Hygiene: Secrets copy directly into `mlock`-ed buffers, zeroed on free to prevent heap dumps.
- Independent Salts: Unique 16-byte random salts per locked app to stop side-channel attacks.
- Self-Diagnostics: Performs automated engine self-tests on every device boot.
Graduated Lockout Policy
- Anti-Brute Force: Access is frozen for 30 seconds after 3 failed password attempts.
- Graduated Scale: Cooldown expands to 60 seconds at 5 failures, and 5 minutes at 10.
- System Intruder Capture: Declares failure callbacks for third-party camera snapping modules.
- Decoy Pins: Input decoy passwords to unlock dummy mock app layouts.
Material 3 & Glassmorphism
- Dynamic Styling: System-wide compatibility with Android Material You dynamic palettes.
- Immersive Overlay: Luxurious frosted glass overlay hides application backdrops in real-time.
- 7 Built-in Themes: Switch between Light, Dark, Sepia, Emerald, Indigo, and OLED black.
- Spring Motion: Interactive feedback utilizes highly polished, native spring-physics animations.
Privately Logged Statistics
- Local Database: Verification audits are compiled strictly inside offline room sandboxes.
- Interactive Charts: Visualizes daily summaries, failed locks, and app opened ratios.
- Score Engine: Generates a cumulative privacy health score of your device app locks.
- No Network Sync: Lock records are never transmitted outside your physical hardware.
Android Environment
| Component | Detail |
|---|---|
| Target platform | Android Platform 36 (Baklava / 16) |
| Minimum SDK | API 26 (Android 8.0) |
| Presentation | Jetpack Compose & Material 3 |
| Memory management | 16 KB Page-aligned loader layout |
Security Specs
| Specification | Detail |
|---|---|
| Native Core | C++17 compiler via Android NDK & CMake |
| Primitives | PBKDF2-HMAC-SHA512 (100,000 iterations) |
| Salt allocation | 16-Byte cryptographically secure random bytes |
| Database | Room local SQLite with hardware master keys |
What is RootLock (Root Lock) by RebelRoot?
−RootLock (also known as Root Lock or RebelRoot RootLock) is a premium, privacy-first per-app locker for Android developed by RebelRoot. Unlike standard app lockers, each app gets its own isolated credential (PIN, password, pattern, or biometric) protected by a hardened native C++ PBKDF2 security core.
How is RootLock different from other Android app lockers?
+Is RootLock free and open source?
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