PQC Mobile Vault

A modern Flutter application for managing encrypted archives with post-quantum cryptography (PQC) algorithms, providing top-tier security against quantum computer attacks.

🔐 Main Features

Advanced Security

• Post-Quantum Cryptography: Support for Kyber, Dilithium, and Falcon algorithms
• Hybrid Encryption: AES + PQC combination for optimal performance and security
• Secure Authentication: Master passwords with SHA-256 hashing
• Quantum Attack Protection: Ready for the future of quantum computing

Archive Management

• Archive Creation: Encryption of files and directories into secure archives
• Secure Extraction: Decryption and extraction of archives with correct keys
• Smart Compression: ZIP compression before encryption
• Integrity Verification: SHA-256 hashes for data validation

Intuitive Interface

• Material Design 3: Modern and intuitive design
• Dark/Light Theme: Support for user preferences
• Advanced Search: Quick filtering of archives
• Smooth Animations: Pleasant user experience

Key Management

• Secure Generation: PQC algorithms with different security levels
• Simplified Management: Intuitive interface for keys
• Secure Backup: Safe storage in local database
• Multiple Keys: Support for multiple algorithms simultaneously

🛠️ Supported PQC Algorithms

Kyber (Key Encapsulation)

• Kyber-512: AES-128 equivalent security
• Kyber-768: AES-192 equivalent security
• Kyber-1024: AES-256 equivalent security

Dilithium (Digital Signatures)

• Dilithium-2: 128-bit security level
• Dilithium-3: 192-bit security level
• Dilithium-5: 256-bit security level

Falcon (Compact Signatures)

• Falcon-512: 128-bit security level
• Falcon-1024: 256-bit security level

📱 Installation and Usage

System Requirements

• Android: 5.0 (API 21) or newer
• iOS: 11.0 or newer
• Storage Space: Minimum 100MB

Installation

1. Download the APK from the Releases section
2. Enable "Unknown sources" in Android settings
3. Install the application
4. Set up master password on first launch

Initial Setup

1. Set master password: Choose a strong password
2. Generate first key: Select a PQC algorithm
3. Test functionality: Create a test archive
4. Configure settings: Customize the application

🔧 Development

Technologies Used

• Flutter: Cross-platform UI framework
• Dart: Main programming language
• SQLite: Local database
• PointyCastle: Cryptographic libraries
• Material Design 3: Design system

Project Structure

lib/
├── models/          # Data models
├── services/        # Business services
├── screens/         # UI screens
├── widgets/         # Reusable widgets
├── crypto/          # Cryptographic implementations
└── main.dart        # Entry point

Installation for Developers

# Clone the repository
git clone https://github.com/user/pcq-mobile-vault.git

# Enter directory
cd pcq-mobile-vault

# Install dependencies
flutter pub get

# Run the application
flutter run

🔒 Security and Privacy

Security Principles

• Zero-knowledge: Passwords are not stored in plain text
• Local encryption: All data is encrypted locally
• No cloud: Data remains on user's device
• Open-source audit: Code is available for verification

Important Considerations

• Backups: Backup keys regularly
• Strong passwords: Use passwords of at least 12 characters
• Updates: Keep the application up to date
• Device security: Use screen locking

🤝 Contributions

Contributions are welcome! Please:

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

Contributor Guide

• Follow Dart code conventions
• Add tests for new features
• Document changes in comments
• Test on multiple platforms

📄 License

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

📞 Support

For questions, issues, or suggestions:

• Issues: Use GitHub Issues
• Discussions: Community forum on GitHub
• Email: [email protected]

🚀 Roadmap

Version 1.1

• Digital signature support
• Encrypted cloud backup
• Biometric authentication
• Secure sharing

Version 1.2

• File manager plugins
• Cloud service integration
• Complete audit log
• HSM support

Version 2.0

• Distributed architecture
• Team support
• Integration API
• Desktop version

🌟 Acknowledgments

Thanks to the open-source community for:

• Flutter Team: Excellent framework
• PointyCastle: Cryptographic implementations
• Material Design: Modern design system
• PQC Community: Research in post-quantum cryptography

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Note: This application is in active development. PQC functionalities are implemented for educational and demonstrative purposes. For production use, we recommend using certified and audited PQC libraries.

Disclaimer: The authors do not assume responsibility for data loss or security issues. Use at your own risk and make regular backups.