2fast

Two-Factor Authenticator Supporting TOTP (Windows 10 & Android, iOS, Linux and macOS App)

Cybersecurity & Ethical HackingC#GPL-3.0

Abstract

2fast is an open-source Cybersecurity & Ethical Hacking project. Two-Factor Authenticator Supporting TOTP (Windows 10 & Android, iOS, Linux and macOS App). It is built using C#. Key capabilities include: All data is stored in a single encrypted file; Encrypted with AES using a password-based key by PBKDF2; Possibility to send the data file to your colleagues and friends to securely share logins. The complete source code is publicly available on GitHub under the GNU General Public License v3.0, making it a useful reference for students building a Cybersecurity & Ethical Hacking mini project or final-year project.

1. Introduction

Two-Factor Authenticator Supporting TOTP (Windows 10 & Android, iOS, Linux and macOS App)

2. Objective

Two-Factor Authenticator Supporting TOTP (Windows 10 & Android, iOS, Linux and macOS App)

This project demonstrates how C# can be applied to a real-world Cybersecurity & Ethical Hacking problem.

3. Key Features / Modules

  • All data is stored in a single encrypted file
  • Encrypted with AES using a password-based key by PBKDF2
  • Possibility to send the data file to your colleagues and friends to securely share logins
  • Easily backup & restore using a single file
  • Everything works locally
  • No extra account, registration or login needed
  • No Internet connection needed except for WebDAV use
  • Synchronisation via a WebDAV server (e.g. ownCloud or Nextcloud) as storage location
  • Free for desktop OS / fee required for mobile OS
  • Open Source

4. Technology Stack

C#

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

  • .NET SDK / Visual Studio
  • Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/2fast-team/2fast.git
cd 2fast
  1. Clone this repository with all its submodules (HTTPS example)
  2. Open the .slnx file with Visual Studio
  3. The dependencies are automatically loaded by Visual Studio
  4. If you have problems with the dependencies for the Uno project, please check => uno-check
  5. Start working and debugging!
  6. Remember to select the correct start project and -platform before hitting the play button
winget install 9P9D81GLH89Q
choco install 2fast
git clone --recurse-submodules https://github.com/2fast-team/2fast.git

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

  • Add logging and alert notifications (email / Telegram)
  • Write a threat model document for the tool
  • Package it with Docker for safe lab testing

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

  1. Which threat or attack does this project defend against?
  2. What detection or protection technique is used and what are its limits?
  3. How are false positives and false negatives handled?
  4. Which cryptographic algorithms or security standards are involved?
  5. What legal and ethical rules apply when testing a tool like this?

9. Source Code & License

This project is developed by 2fast-team and published on GitHub under the GNU General Public License v3.0. Please follow the license terms and credit the original author when you use or modify this code.

View Source on GitHubDownload ZIP

Want to build this as your internship project?

Work on a Cybersecurity & Ethical Hacking project like this with mentor guidance, weekly reviews and an internship certificate from Training Trains, Erode — online or offline.

Apply for Cybersecurity & Ethical Hacking Internship