Kutra Authenticator

A privacy-first, cross-platform authentication system built for modern applications and developers.

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Kutra Authenticator is not just a login system — it is a secure identity layer designed for offline-first usage, encrypted backups, and full OTPAuth compatibility. Unlike rigid alternatives, Kutra offers a Developer Mode with fully customizable OTP parameters.

🚀 Vision

Replace fragmented authentication apps with a unified, open, and secure identity ecosystem. Beyond Limits.

⚙️ Core Features

• 🔐 OTPAuth-compatible TOTP/HOTP generator (RFC 6238 / RFC 4226)
• 📱 Cross-platform support (Flutter: Android, iOS, Windows, macOS, Linux)
• 🧠 Offline-first architecture (no mandatory cloud dependency)
• 🔑 Secure local encrypted storage
• 📷 QR code scanning and provisioning support
• 🔄 Import / export encrypted vault
• 🌐 Optional cloud sync (end-to-end encrypted)

🧩 Architecture

• UI Layer: Flutter (Material 3 / Cupertino)
• Core Logic: Dart OTPAuth Parser (Custom RFC implementation)
• Storage: flutter_secure_storage (Keychain/Keystore backed)

🔐 Security Model

• Secrets never leave device unencrypted
• AES-256 encrypted local storage
• Optional device-to-device encrypted sync via mDNS or cloud relay
• No tracking, no telemetry

📲 Supported Platforms

• 🤖 Android (APK / AAB)
• 🍎 iOS (IPA)
• 🪟 Windows (EXE / MSIX)
• 🍏 macOS (DMG)
• 🐧 Linux (AppImage / Flatpak)

🛠️ Installation

git clone https://github.com/KutraCorporation/authenticator.git
cd authenticator
flutter pub get
flutter run

Contribute

We welcome your contributions!

• Fork
• Create a Feature branch (git checkout -b feature/amazing-feature)
• Commit your changes (git commit -m 'Add amazing feature')
• Push your branch (git push origin feature/amazing-feature)
• Create a Pull Request

License

Open-source (MIT / Apache 2.0 depending on module)

Built with privacy, simplicity, and developer freedom in mind.
Kutra Corporation — Beyond Limits.