Tenvoro Authenticator - Secure 2FA Flutter App

Tenvoro Authenticator is a modern and secure two-factor authentication application built with Flutter for Android and iOS. It provides a reliable foundation for generating time-based and counter-based one-time passwords using industry-standard TOTP and HOTP authentication protocols. The application is designed with security and privacy in mind. Authentication data is stored locally on the device, OTP secrets are encrypted before storage, and secure key management is used to help protect sensitive information. The core authentication process works offline, allowing users to generate verification codes without requiring a continuous internet connection. Tenvoro Authenticator offers a clean, modern, and intuitive mobile experience while maintaining a well-organized Flutter codebase suitable for customization and further development. Accounts can be added through QR codes or manually, making the application compatible with common two-factor authentication workflows and services. The project uses Flutter Bloc for structured state management and follows a modular approach that makes the source code easier to understand, maintain, and extend. It is suitable for developers, startups, businesses, and agencies looking to create their own branded authenticator application without building the entire authentication interface and OTP workflow from scratch. Tenvoro Authenticator is an excellent starting point for building a secure 2FA application, OTP manager, authentication utility, or customized authenticator solution for Android and iOS.

Features

• TOTP (Time-Based One-Time Password) support
• HOTP (HMAC-Based One-Time Password) support
• QR code scanning to add authenticator accounts
• Manual account creation
• Import accounts from Google Authenticator
• Reorder accounts with drag-and-drop
• Fast account search
• Secure app lock with device authentication
• Session timeout with automatic app locking
• Authentication rate limiting against brute-force attempts
• Encrypted OTP secrets in local storage
• Secure encryption key management using secure storage
• Encrypted local database storage
• Input validation for imported QR and Protocol Buffer data
• Export and import accounts using Protocol Buffers
• Light and dark mode support
• Multi-language support
• Fully offline OTP generation
• No account data sharing with external servers
• Google Authenticator compatible format
• Time synchronization aligned with Google and Microsoft Authenticator
• Clean and modern user interface
• Flutter Bloc state management
• Android and iOS support
• Full Flutter source code
• Developer-friendly and customizable architecture

Requirements

• Flutter SDK ^3.8.0
• Dart SDK included with Flutter
• Android Studio for Android development
• Android SDK
• Android Emulator or physical Android device
• Xcode for iOS development on macOS
• iOS Simulator or physical iOS device
• VS Code or IntelliJ IDEA (optional)
• Flutter and Dart IDE extensions recommended
• macOS is required to build the iOS version
• Camera access is required for QR code scanning
• Device authentication support is recommended for App Lock functionality

Run flutter doctor after installing the development tools to verify that your Flutter environment is configured correctly. No backend server or internet connection is required for core OTP generation and authentication.

Instructions

1. Install the required Flutter SDK and Dart development environment.
2. Install the platform development tools:
   • Android Studio and Android SDK for Android.
   • Xcode for iOS development on macOS.
   • VS Code or IntelliJ IDEA can optionally be used as the code editor.
3. Verify that the Flutter environment is configured correctly:

flutter doctor

1. Extract the downloaded Tenvoro Authenticator source code and open the project folder in your preferred IDE.
2. Install the required Flutter packages:

flutter pub get

1. Connect a physical Android/iOS device or start an emulator/simulator.
2. Run the application:

flutter run

1. Configure the application name, package/bundle identifier, app icon, branding, colors, languages, and other project settings as required.
2. Build the production application when customization is complete:

flutter build apk

For iOS builds, open the iOS project with Xcode and configure the required signing certificate and provisioning profile. No backend server is required for the application's core authenticator and OTP generation functionality.