TOTP Generator

This project is a simple, web-based Time-Based One-Time Password (TOTP) generator that functions similarly to Google Authenticator and Authy. It allows you to generate TOTP codes using secret keys stored in text files on a USB drive. Each site can have its own key file, and the application will automatically generate a new TOTP code every 30 seconds.

Features

• Generates TOTP codes using secret keys stored in text files.
• Automatically updates TOTP codes every 30 seconds.
• Displays the current key file being used.
• Provides a user-friendly interface for loading secret keys and generating TOTP codes.

How to Set Up

Prerequisites

• A USB drive.
• A modern web browser (Google Chrome, Firefox, Safari, etc.).

Step-by-Step Setup

1. Prepare the USB Drive:
2. Download the index.html file provided in this repository.

3. Save the index.html file to the root directory of your USB drive.

4. Create Secret Key Files:

5. Obtain the secret key from the website for which you want to generate TOTP codes.
6. The secret key is usually provided as a base32-encoded string during the 2FA setup process. If a QR code is provided, look for an option to display the key as text.
7. Create a text file with the name of the website (e.g., eneba.txt) and paste the secret key into this file.
8. Save the text file to the root directory of your USB drive.

Example

For example, if you are setting up 2FA for the site "Eneba":

1. Go to the 2FA setup page on Eneba and copy the provided secret key (base32-encoded string).
2. Create a text file named eneba.txt.
3. Paste the secret key into eneba.txt and save the file to the USB drive.

How to Use

1. Insert the USB Drive:

2. Insert the USB drive into any computer with a web browser.

3. Open the HTML File:

4. Navigate to the USB drive in File Explorer (Windows) or Finder (macOS).

5. Double-click the index.html file to open it in the default web browser.

6. Load Secret Key and Generate OTP:

7. Click the "Load Secret Key" button and select the appropriate secret key file (e.g., eneba.txt).
8. The filename of the loaded key will be displayed.
9. The OTP will be generated and displayed after the file is selected.
10. The script will automatically generate a new OTP every 30 seconds and update the countdown timer.

Notes

• Each website will have its own secret key, which you need to save in a separate text file.
• Make sure to name the text files appropriately to easily identify which key is for which site.
• The secret keys must be base32-encoded strings.

Security

• Keep your USB drive secure and do not share your secret key files with others.
• This tool generates OTPs locally in your browser and does not send any information over the internet.

Compatibility

• This tool should work in any modern web browser that supports JavaScript and HTML5.

License

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

Acknowledgments

• This tool uses the jsSHA library for generating SHA-1 hashes.