Answer:
Before distributing an app, you must generate a private key and use it to sign the APK file.
Step-by-step explanation:
When preparing to distribute an Android application, a crucial step involves signing the APK (Android Package) file with a private key. This process is essential for ensuring the integrity and authenticity of the app. By signing the APK, you essentially attach a cryptographic signature that verifies the source and integrity of the application. This helps in preventing unauthorized modifications to the app and ensures that users are installing a legitimate version.
The private key used for signing is a unique identifier for the app's developer or publisher. It acts as a digital signature, confirming that the app hasn't been tampered with since it was signed. Without this signature, the Android operating system may reject the installation, alerting users to potential security risks.