Play App Signing uses two keys: the app signing key and the upload key , which are described in further detail in the section about Keys and keystores. You keep the upload key and use it to sign your app for upload to the Google Play Store. Google uses the upload certificate to verify your identity, and signs your APK s with your app signing key for distribution as shown in figure 1.
By using a separate upload key you can request an upload key reset if your key is ever lost or compromised. Figure 1. Signing an app with Play App Signing.
When you use Play App Signing, if you lose your upload key, or if it is compromised, you can contact Google to revoke your old upload key and generate a new one. Because your app signing key is secured by Google, you can continue to upload new versions of your app as updates to the original app, even if you change upload keys. To learn more, read Reset a lost or compromised private upload key.
The next section describes some important terms and concepts related to app signing and security. Java Keystores. A public key certificate. You must keep the upload key secret.
However, you can share the certificate that is generated using your upload key. You may generate an upload key in one of the following ways:. This is used to register public key s with API providers; it's intended to be shared, as it does not contain your private key. A certificate fingerprint is a short and unique representation of a certificate that is often requested by API providers alongside the package name to register an app to use their service. Other fingerprints can also be computed by downloading the original certificate.
Because the debug certificate is created by the build tools and is insecure by design, most app stores including the Google Play Store do not accept apps signed with a debug certificate for publishing. Android Studio automatically stores your debug signing information in a signing configuration so you do not have to enter it every time you debug. A signing configuration is an object consisting of all of the necessary information to sign your app, including the keystore location, keystore password, key name, and key password.
For more information about how to build and run apps for debugging, see Build and Run Your App. The self-signed certificate used to sign your app for debugging has an expiration date of 30 years from its creation date. When the certificate expires, you get a build error. To fix this problem, simply delete the debug. The next time you build and run a debug version of your app, Android Studio regenerates a new keystore and debug key.
When you are ready to publish your app, you need to sign your app and upload it to an app store, such as Google Play. When publishing your app to Google Play for the first time, you must also configure Play App Signing. Play App Signing is optional for apps created before August This section shows you how to properly sign your app for release and configure Play App Signing. If you don't already have an upload key, which is useful when configuring Play App Signing, you can generate one using Android Studio as follows:.
On the New Key Store window, provide the following information for your keystore and key, as shown in figure 2. Figure 2. Create a new upload key and keystore in Android Studio. If you would like to build and sign your app with your upload key, continue to the section about how to Sign your app with your upload key. If you only want to generate the key and keystore, click Cancel. If you already have an upload key, use it to sign your app. If instead your app is already signed and published to the Google Play store with an existing app signing key, use it to sign your app and make sure to encrypt and export it to opt your app in to Play App Signing.
To sign your app using Android Studio, and export an existing app signing key, follow these steps:. Specify the path to your keystore, the alias for your key, and enter the passwords for both.
If you haven't yet prepared your upload keystore and key, first Generate an upload key and keystore and then return to complete this step. Figure 3. Control the system UI visibility. Supporting swipe-to-refresh. Pop-up messages overview. Adding search functionality. Creating backward-compatible UIs. Home channels for mobile apps.
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Asked 4 years ago. Active 7 days ago. Viewed 16k times. I am getting very confused here to use downloaded file as keystore is it a configuration file if yes, how to configure it Is there any other way to do this I am really very confused about it, how to build a signed apk where App Signing is enabled on Google Play.
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