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recaptcha_v3_tutorial

Depiction of Bot Attack on a Web Form. As a web developer, do you want to:

🛡️ Secure the website traffic from spam data?

🧹 Detect bots injecting malicious code in web forms?

📈 Integrate a ready-made solution for risk analysis?

This project is a demo tutorial through which you can learn the implementation of Google reCAPTCHA v3 in Flutter Web.

Project Structure

recaptcha_v3_tutorial
├─ lib
│  ├─ config 
│  │  └─ config.dart // Holds the confidential information.
│  ├─ model
│  │  └─ recaptcha_response.dart // Holds the Google reCAPTCHA v3 HTTP Response.
│  ├─ page
│  │  └─ demo_page.dart // A Demo Page with a [FlutterLogo],a [NameField] & an [ElevatedButton].
│  ├─ service
│  │  └─ recaptcha_service.dart // Holds the Google reCAPTCHA v3 Operations.
│  ├─ widget
│  │   ├─ info_dialog.dart // Shows an [AlertDialog] to the user.  
│  │   └─ name_field.dart // Shows a custom [TextFormField] to the user.  
│  ├─ main.dart
├─  web
│  ├─ index.html
├─ pubspec.lock
├─ pubspec.yaml
├─ README.md

Getting Started

  1. Register your site via the Google reCAPTCHA.

    Illustration of Google reCAPTCHA v3 Site Registration Form

  2. Copy the reCAPTCHA v3 site and secret keys.

    Illustration of Google reCAPTCHA v3 Site and Secret Keys.

  3. Navigate to the web folder, open the index.html file and paste the below script inside the <body> tag.

    <body>
 <script src="https://www.google.com/recaptcha/api.js?render=recaptcha-site-key"></script>
 <!-- This script installs service_worker.js to provide PWA functionality to
   application. For more information, see:
   https://developers.google.com/web/fundamentals/primers/service-workers -->
</body>

  4. In the config.dart file, paste the reCAPTCHA site & secret key.

    /// Holds the 'Site Key' for the `Google reCAPTCHA v3` API.
static const String siteKey = 'recaptcha-site-key';

/// Holds the 'Secret Key' for the `Google reCAPTCHA v3` API.
static const String secretKey = 'recaptcha-secret-key';

  5. Congratulations! You're done, run the app.

    Demo of the Google reCAPTCHA v3 in Flutter Web

TOOLS & LANGUAGE