Generating SHA-1 Keys for Google Sign-In in Flutter!

Troubleshooting Guide: Generating SHA-1 Keys for Google Sign-In in Flutter Published on April 3, 2024

Integrating Google Sign-In functionality into a Flutter app is essential for enabling seamless user authentication and access to various Google services. However, one crucial step in this process is obtaining the SHA-1 keys for your app, which can sometimes be met with challenges. In this thorough troubleshooting guide, we will tackle common issues encountered when generating SHA-1 keys for Google Sign-In in Flutter apps and provide step-by-step solutions to overcome them.

Error Scenario:

Imagine you're developing a Flutter app and need to integrate Google Sign-In functionality. Following the official documentation, you attempt to generate SHA-1 keys by running the command keytool -list -v -keystore "C:\Users\YOUR_USERNAME\.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android. However, you encounter difficulties and errors during the process, preventing you from obtaining the necessary SHA-1 keys.

Troubleshooting Steps:

  1. Check Command Syntax:
    • Ensure that you have copied the command correctly and replaced "C:\Users\YOUR_USERNAME\.android\debug.keystore" with the appropriate path for your user profile.
    • Double-check the command for any typos or missing characters before executing it in the command prompt or terminal.
  2. Verify Keystore Path:
    • Confirm that the path to your debug keystore file (debug.keystore) is accurate and points to the correct location on your system.
    • Replace YOUR_USERNAME with your actual username in the keystore path to reflect the path to your user directory.
  3. Enter Correct Keystore Password:
    • When prompted for the keystore password, ensure that you enter the correct password. For the debug keystore, the default password is usually android.
    • Type the password android (or your custom password if you have changed it) when prompted and press Enter to proceed with the key generation process.
  4. Review User Permissions:
    • Make sure that you have the necessary permissions to access the keystore file and execute the keytool command.
    • If you encounter permission issues, try running the command with administrative privileges or adjusting the file permissions for the keystore file.
  5. Execute Command in Correct Directory:
    • Navigate to the directory containing your Flutter project files before running the keytool command.
    • Running the command in the correct directory ensures that the keytool utility can locate the keystore file and generate the SHA-1 key successfully.
  6. Capture and Copy SHA-1 Key:
    • Once the command is executed successfully, the terminal will display the generated SHA-1 key in the output.
    • Locate the SHA1 section in the output and copy the SHA-1 key, as it will be required for integrating Google Sign-In into your Flutter app.


By following these troubleshooting steps and solutions, you should be able to successfully generate SHA-1 keys for Google Sign-In in your Flutter app. Remember to verify the command syntax, keystore path, and password, and ensure Ensure that you possess the required permissions to execute the command. With the SHA-1 key obtained, you can seamlessly integrate Google Sign-In functionality and enhance the user experience of your Flutter app.

References: Flutter Documentation, Firebase Documentation