SecureVault Android

A secure, offline-first password manager for Android built with modern technologies including Jetpack Compose, Room Database, and biometric authentication.

Features

Security

• AES Encryption: All passwords encrypted using Android Keystore
• Biometric Authentication: Fingerprint and face unlock support
• PIN Fallback: Secure PIN authentication when biometrics unavailable
• Offline-First: No internet permissions - your data stays local
• Encrypted Backups: Export/import with password-protected encryption

User Experience

• Material 3 Design: Modern, clean interface following Material Design 3
• Dark/Light Themes: Automatic theme switching based on system preference
• Search & Filter: Quick password search and category filtering
• Auto-Clear Clipboard: Automatic clipboard clearing after password copy
• Intuitive Navigation: Simple, user-friendly interface

Technical

• Clean Architecture: Repository pattern with separation of concerns
• Jetpack Compose: Modern declarative UI framework
• Room Database: Local encrypted database storage
• Kotlin: 100% Kotlin codebase
• Modern Android: Targets Android 14 (API 35), supports Android 7.0+ (API 24)

Screenshots

Main Screen	Add Password	Settings	Advanced Theme

Installation

From Releases (Recommended)

1. Download the latest APK from Releases
2. Enable "Install from unknown sources" in Android settings
3. Install the APK file
4. Grant biometric permissions when prompted

From Source

git clone https://github.com/YourUsername/SecureVault-Android.git
cd SecureVault-Android
./gradlew assembleRelease

Requirements

• Minimum Android Version: Android 7.0 (API level 24)
• Target Android Version: Android 14 (API level 35)
• Recommended: Device with biometric hardware (fingerprint/face)
• Storage: ~10MB for app installation

Architecture

SecureVault follows Clean Architecture principles:

┌─────────────────────────────────────────────────────┐
│                    UI Layer                         │
│  ┌─────────────────┐  ┌─────────────────────────────┐│
│  │     Screens     │  │       ViewModels           ││
│  │   (Compose)     │  │    (State Management)      ││
│  └─────────────────┘  └─────────────────────────────┘│
└─────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────┐
│                  Domain Layer                       │
│  ┌─────────────────────────────────────────────────┐│
│  │              Use Cases                          ││
│  │         (Business Logic)                        ││
│  └─────────────────────────────────────────────────┘│
└─────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────┐
│                   Data Layer                        │
│  ┌─────────────────┐  ┌─────────────────────────────┐│
│  │   Repository    │  │     Local Database         ││
│  │ (Abstraction)   │  │   (Room + Encryption)      ││
│  └─────────────────┘  └─────────────────────────────┘│
└─────────────────────────────────────────────────────┘

Key Components

• Screens: Jetpack Compose UI screens
• ViewModels: State management and UI logic
• Use Cases: Domain-specific business logic
• Repository: Data access abstraction
• Room Database: Local encrypted storage
• Security Manager: Encryption and key management

Security Details

Encryption

• Algorithm: AES-256-GCM encryption
• Key Storage: Android Keystore system
• Data: All passwords encrypted at rest
• Backups: Export files are password-encrypted

Authentication

• Primary: Biometric authentication (fingerprint/face)
• Fallback: PIN-based authentication
• Session: Automatic logout after inactivity

Privacy

• No Network: Zero internet permissions
• Local Only: All data stored locally on device
• No Analytics: No tracking or data collection
• Open Source: Fully auditable code

Development

Prerequisites

• Android Studio Arctic Fox or newer
• JDK 11 or newer
• Android SDK with API 35

Setup

git clone https://github.com/YourUsername/SecureVault-Android.git
cd SecureVault-Android
./gradlew build

Running Tests

# Unit tests
./gradlew test

# Instrumented tests
./gradlew connectedAndroidTest

# Lint check
./gradlew lint

Build Commands

# Debug APK
./gradlew assembleDebug

# Release APK (requires signing)
./gradlew assembleRelease

Contributing

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Code Style

• Follow Kotlin coding conventions
• Use meaningful variable and function names
• Add comments for complex logic
• Ensure all tests pass before submitting

Technologies Used

• Kotlin: Primary programming language
• Jetpack Compose: Modern UI toolkit
• Room Database: Local database solution
• Android Keystore: Secure key management
• Biometric API: Fingerprint/face authentication
• Security Crypto: Encryption utilities
• Material 3: Design system
• Clean Architecture: Architectural pattern

Roadmap

• Cloud sync (optional, encrypted)
• Password generator with customizable rules
• Secure notes storage
• Password strength analysis
• Import from other password managers
• Wear OS companion app
• Auto-fill service integration

Support

• Issues: Report bugs via GitHub Issues
• Discussions: Feature requests and questions in Discussions
• Security: Report security vulnerabilities privately

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

• Android Jetpack team for excellent libraries
• Material Design team for design guidelines
• Contributors and testers
• Open source community

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⚠️ Security Notice: This is a password manager application. Please review the code and security practices before using it to store sensitive information. While we follow security best practices, use at your own discretion.