What are the best ways to secure a RapidAPI secret key in an Android APK?

I’m working on a Kivy application in Python intended for Android devices. My app interacts with APIs using a RapidAPI key and host information to retrieve data. How can I secure my secret key when I package the app to prevent its exposure? Additionally, I want to understand how to eliminate the dependency on this secret key in my code to ensure that any updates or regeneration of the key won’t affect the currently published version of the app.
Here’s an example of how I’m currently using the API key:
```python
api_headers = {
‘host-name’: ‘newrapidapi.com’,
‘api-key’: ‘new_key_value’
}

Securing your RapidAPI key in an Android application, even when using Kivy in Python, involves a few strategic steps that ensure both security and flexibility. Here are some recommended approaches:

1. Move the Key to a Backend Server

Create an intermediary server to handle API requests. This stops the direct embedding of the key in the client app. Your app would make API requests to your server, which in turn would call the RapidAPI endpoint with the secret key. This method enhances security since your key is not exposed to the client.

2. Use Environment Variables or Encrypted Storage

If you must store the key within the app, consider using environment variables or storing it in an encrypted format. Note, however, that this still has risk in a client-side application.

3. Secure Your API Calls

Implement SSL/TLS to encrypt data in transit, ensuring that any intercepted requests do not expose sensitive information.

4. Use API Rate Limiting

RapidAPI offers rate limiting and monitoring features through their dashboard. Set this up to limit potential misuse if a key is compromised.

5. Updateable Configuration

Design your app to fetch configurations from a server. This allows you to change the key without needing to update your app, making it key regeneration friendly.

By combining these strategies, you can ensure that your API keys remain secure and maintain a flexible approach for managing updates or changes.