How can I secure my RapidAPI secret key within an Android APK?

Developing a Python Kivy Android app that integrates RapidAPI. How can I obscure the API secret in the APK and isolate key updates from the code?

config = {
    'api-host': 'api-example.com',
    'api-token': 'mySecret123'
}

hey, i suggest not to store the key in the apk. move your api calls to a backend so you can update your key easily and reduce the risk of reverse engineering. it’s a bit extra work but much safer in the long run.

The challenge of securing an API key stored within an APK is well-known, and having experienced similar dilemmas, I found that relying purely on client-side techniques leaves too much to chance. In one project, after multiple iterations, I ended up designing a middleware that acted as an intermediary between the app and the API. This approach not only centralizes key management and rotation but also ensures that the secret key never resides in the publicly accessible portion of the application. As a result, security risks are minimized and updates can be implemented without redeploying the entire app.

i started using a backend that issues short-lived tokens. the secret never sits in the apk, making it way harder to exploit. it takes a bit more work but its much safer than just obfuscating the key in your code.

In my experience, the best approach when dealing with sensitive API keys in an Android app is to entirely remove them from the client application. I tackled a similar issue by using a secure backend service to mediate API requests. This configuration not only safeguards the key from being exposed through reverse engineering but also allows for easier key updates without the need for app redeployment. It might require extra effort initially, but the overall enhancement in security and deployability is well worth it.

Relying solely on client-side obfuscation is insufficient to protect sensitive API secrets within an APK. In practice, I resolved this by offloading the calls requiring the secret key to a secure backend server. This not only secures the key from reverse engineering but also allows key rotation without updating the app itself. Although it may be tempting to use methods like code obfuscation or encryption tools like the Android KeyStore, such measures typically present a false sense of security since any secret embedded on the client can potentially be extracted.