Authenticating Your Client

Certain Google Play services (such as Google Sign-in and App Invites) require you to provide the SHA-1 of your signing certificate so we can create an OAuth2 client and API key for your app. To get your SHA-1, follow these instructions:

Open a terminal and run the keytool utility provided with Java to get the SHA-1 fingerprint of the certificate. You should get both the release and debug certificate fingerprints.

To get the release certificate fingerprint:

keytool -exportcert -list -v \
-alias <your-key-name> -keystore <path-to-production-keystore>

To get the debug certificate fingerprint:

keytool -exportcert -list -v \
-alias androiddebugkey -keystore ~/.android/debug.keystore
keytool -exportcert -list -v \
-alias androiddebugkey -keystore %USERPROFILE%\.android\debug.keystore

The keytool utility prompts you to enter a password for the keystore. The default password for the debug keystore is android. The keytool then prints the fingerprint to the terminal. For example:

Certificate fingerprint: SHA1: DA:39:A3:EE:5E:6B:4B:0D:32:55:BF:EF:95:60:18:90:AF:D8:07:09

To learn more about digital signing on Android, see Signing Your Applications.