Flauth

Flauth is a privacy-first, fully open-source TOTP authenticator for Android, macOS, Windows, and Linux.

It provides a simple and lightweight solution for managing your 2FA (Two-Factor Authentication) tokens.

🌟 Why Flauth?

- 100% Open Source: Transparent and trustable code. Your secrets never leave your device unless you choose to sync them. - Flexible Backups: - Security Logic: Detailed backup and restore mechanisms: https://github.com/jiacai2050/flauth/blob/main/docs/backup.md - Local Backup: Export/Import accounts as standard text files using system file pickers. - WebDAV Sync: Seamlessly sync your data with your private cloud (Nextcloud, Nutstore, etc.) using a robust single-file sync approach with custom path support. - Privacy & Security: - Security Architecture: Detailed security implementation and authentication strategies: https://github.com/jiacai2050/flauth/blob/main/docs/auth.md - Performance Design: Detailed high-frequency UI update optimizations: https://github.com/jiacai2050/flauth/blob/main/docs/perf.md - Encrypted Storage: Secrets are encrypted and stored in the device's secure element (Keychain on iOS/macOS, Keystore on Android). - Granular Storage: Implements "One Key Per Account" architecture for maximum reliability and scalability. - Modern UI: Focused on simplicity. Built with Material 3, supporting adaptive light and dark modes.

📥 Importing from other apps

Migrating to Flauth is easy thanks to its support for standard otpauth:// URIs:

- Importing from Aegis: A step-by-step guide to migrate all your accounts from Aegis Authenticator: https://github.com/jiacai2050/flauth/blob/main/docs/import_aegis.md - Manual Migration: For other apps, export your accounts as a plain text list of otpauth:// URIs (one per line). Save this file with a .flauth extension, then use the Local File import feature. If you have plain secret keys, you can use our TOTP URI Generator to create the QR codes or URI lists: https://jiacai2050.github.io/flauth/tools/uri-generator/

otpauth://totp/GitHub:user?secret=ABC...&issuer=GitHub otpauth://totp/Google:user@gmail.com?secret=XYZ...&issuer=Google

🛡️ Permissions

- Camera: To scan QR codes for adding accounts. - Local Storage/Network: To backup/restore accounts locally or via WebDAV.

📄 License

This project is licensed under the MIT License: https://github.com/jiacai2050/flauth/blob/main/LICENSE