Android Studio: Siapkan App Signing untuk Upload ke App Gallery

/usr/local/android-studio-bumblebee/jre/bin/keytool -export -rfc -keystore ittsinternetoffline.jks -alias key0 -file upload_certificate.pem

Enter keystore password:  
Certificate stored in file <upload_certificate.pem>

Pastikan alias sesuai dengan alias yang ada disini key0