However, one of the most important benefits to Play App Signing is the ability to separate the key you use to sign the artifact you upload to Google Play from the key that Google Play uses to sign your app for distribution to users. So, consider following the steps in the next section to generate and register a separate upload key.
When you're publishing an app that is not signed by an upload key, the Google Play Console provides the option to register one for future updates to the app. That way, Google keeps your signing key secure, and you have the option to reset a lost or compromised private upload key.
This section describes how to create an upload key, generate an upload certificate from it, and register that certificate with Google Play for future updates of your app. The following describes the situations in which you see the option to register an upload certificate in the Play Console:. After you create your upload key and keystore, you need to generate a public certificate from your upload key using keytool , with the following command:.
Now that you have your upload certificate, register it with Google when prompted in the Play Console or read the section below to register it though the Google Play support team.
In some circumstances, you might want to change your app's signing key. For example, because you want a cryptographically stronger key or your signing key has been compromised.
However, because users can only update your app if the update is signed with the same signing key, it's difficult to change the signing key for an app that's already published. If you publish your app to Google Play, you can upgrade the siging key for your published app through the Play Console—your new key is used to sign new installs and app updates, while your older app signing key is used to sign updates for users who installed your app before the key upgrade. To learn more, read Upgrade your app signing key for new installs.
If you lost your private upload key or your private key has been compromised, you can create a new one and contact the Google Play support team to reset the key. In Android Studio, you can configure your project to sign the release version of your app automatically during the build process by creating a signing configuration and assigning it to your release build type. A signing configuration consists of a keystore location, keystore password, key alias, and key password.
To create a signing configuration and assign it to your release build type using Android Studio, complete the following steps:. Select your keystore file, enter a name for this signing configuration as you may create more than one , and enter the required information.
Figure 7. The window for creating a new signing configuration. Figure 8. Select a signing configuration in Android Studio. When you create a signing configuration, your signing information is included in plain text in your Gradle build files. If you are working in a team or sharing your code publicly, you should keep your signing information secure by removing it from the build files and storing it separately.
You can read more about how to remove your signing information from your build files in Remove Signing Information from Your Build Files. For more about keeping your signing information secure, read Secure your key.
If your app uses product flavors and you would like to sign each flavor differently, you can create additional signing configurations and assign them by flavor:. Figure You can also specify your signing settings in Gradle configuration files. For more information, see Configuring Signing Settings. If you choose not to opt in to Play App Signing only for apps created before August , you can manage your own app signing key and keystore.
Keep in mind, you are responsible for securing the key and the keystore. When you are ready to create your own key and keystore, make sure you first choose a strong password for your keystore and a separate strong password for each private key stored in the keystore.
You must keep your keystore in a safe and secure place. If you lose access to your app signing key or your key is compromised, Google cannot retrieve the app signing key for you, and you will not be able to release new versions of your app to users as updates to the original app. For more information, see Secure your key , below. If you manage your own app signing key and keystore, when you sign your APK, you will sign it locally using your app signing key and upload the signed APK directly to the Google Play Store for distribution as shown in figure Signing an app when you manage your own app signing key.
When you use Play App Signing , Google keeps your signing key safe, and ensures your apps are correctly signed and able to receive updates throughout their lifespans. However, if you decide to manage your app signing key yourself, there are a few considerations you should keep in mind. You should sign your app with the same certificate throughout its expected lifespan.
There are several reasons why you should do so:. Content and code samples on this page are subject to the licenses described in the Content License. Docs Getting Started About. Core Topics Architecture. Overview Security Overview. Android Security Bulletins. Android Automotive. Application Signing. Protected Confirmation.
Identity Credential. Trusty TEE. The key used to create this certificate is called the app signing key. Application signing ensures that one application cannot access any other application except through well-defined IPC.
Copy the downloaded APK file from your computer to your Android device in your chosen folder. Once you find the APK file, tap on it to install. In the new Android Studio, the signed apk is placed directly in the folder of module for which the apk is built. The Android build system is the toolkit you use to build, test, run and package your apps. Android Package APK is the package file format used by the Android operating system, and a number of other Android-based operating systems for distribution and installation of mobile apps, mobile games and middleware.
Unsigned Apk, as the name suggests it means it is not signed by any Keystore. You can find your signed application package. From RAD Studio. Jump to: navigation , search. Categories : Android XE5.
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