我已经使用同一个帐户在 Play 商店上传了大约 10 个应用程序。由于当时缺乏知识，我已经为所有应用程序创建了单独的证书，但现在我只想将其设为单一证书并为所有应用程序分配不同的别名。有可能改变吗？如果是，程序是什么。

最佳答案

在 Google Play I/O 2019(here 和 here)期间，Play 团队宣布了一项新功能(作为 Android App Bundle 机制的扩展)，该功能允许为新安装及其更新升级签名 key 。这是为使用旧签名 key 签名的现有应用升级 key 的唯一向后兼容的方式。

来自伴随blog post :

In addition to efficiency and modularity, the Android App Bundle also now offers increased security with the launch of app signing key upgrade for new installs. With this feature, you can upgrade the cryptographic strength of your signing key for new installs and their updates on Google Play. Many developers sign their apps with keys generated a long time ago, and this new feature is the only backwards-compatible way to increase their strength.

玩的documentation进入更多细节:

In some circumstances, you can request an app signing key upgrade. Your new key is used to sign new installs and app updates. Your legacy app signing key is still used to sign updates for users who installed your app before the key upgrade.

Each app can only have its app signing key upgraded once in its lifetime. In the unlikely event that you have multiple apps using the same signing key specifically to run in the same process, you won’t be able to use key upgrade for those apps.

Here are a couple of reasons to request an app signing key upgrade:
- You need a cryptographically stronger key.
- Your app signing key has been compromised.

请求 key 升级前的重要注意事项:

Before requesting a key upgrade, it’s important to understand the changes that you may need to make after the upgrade is complete.
- If you use the same app signing key for multiple apps in order to share data/code between them, you need to update your apps to recognize both your new and legacy app signing key certificates.
- If your app uses APIs, make sure to register the certificates for your new and legacy app signing key with API providers before publishing an update to ensure the APIs continue working. Certificates are available on the App signing page on the Play Console.
- If many of your users install updates via peer-to-peer sharing, they’ll only be able to install updates that are signed with the same key as the version of your app which they already have installed. If they’re unable to update their app because they have a version of your app that’s signed with a different key, they have the option of uninstalling and reinstalling the app to get the update.

为新安装请求 key 升级:

1. Sign in to your Play Console.
2. Select an app.
3. On the left menu, select Release management > App signing.
4. In the “Upgrade your app signing key for new installs” card, select Request key upgrade.
5. Select an option. Depending on the option you select, you may need to contact support to complete your request.
6. Have Google to generate a new app signing key (recommended) or upload one. After upgrading your app signing key, if you were using the same key for your app signing and upload key, you can continue using your legacy app signing key as your upload key or generate a new upload key.

关于android - 我可以在 Play 商店更改 Android 应用程序证书吗，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42856650/