# Create an upload keystore

If you have an existing keystore, skip to the next step. If not, create one using one of the following methods:

1. Follow the [Android Studio key generation steps](https://developer.android.com/studio/publish/app-signing#generate-key).
2. Run the following command at the command line:

   On macOS or Linux, use the following command:

   ```
   keytool -genkey -v -keystore ~/upload-keystore.jks -keyalg RSA \
           -keysize 2048 -validity 10000 -alias upload
   ```

   content\_copy

   On Windows, use the following command in PowerShell:

   ```
   keytool -genkey -v -keystore $env:USERPROFILE\upload-keystore.jks `
           -storetype JKS -keyalg RSA -keysize 2048 -validity 10000 `
           -alias upload
   ```

   content\_copy

   This command stores the `upload-keystore.jks` file in your home directory. If you want to store it elsewhere, change the argument you pass to the `-keystore` parameter. **However, keep the `keystore` file private; don't check it into public source control!**

<mark style="color:yellow;">Note</mark>

* <mark style="color:yellow;">The</mark> <mark style="color:yellow;">`keytool`</mark> <mark style="color:yellow;">command might not be in your path—it's part of Java, which is installed as part of Android Studio. For the concrete path, run</mark> <mark style="color:yellow;">`flutter doctor -v`</mark> <mark style="color:yellow;">and locate the path printed after 'Java binary at:'. Then use that fully qualified path replacing</mark> <mark style="color:yellow;">`java`</mark> <mark style="color:yellow;">(at the end) with</mark> <mark style="color:yellow;">`keytool`</mark><mark style="color:yellow;">. If your path includes space-separated names, such as</mark> <mark style="color:yellow;">`Program Files`</mark><mark style="color:yellow;">, use platform-appropriate notation for the names. For example, on macOS and Linux use</mark> <mark style="color:yellow;">`Program\ Files`</mark><mark style="color:yellow;">, and on Windows use</mark> <mark style="color:yellow;">`"Program Files"`</mark><mark style="color:yellow;">.</mark>
* <mark style="color:yellow;">The</mark> <mark style="color:yellow;">`-storetype JKS`</mark> <mark style="color:yellow;">tag is only required for Java 9 or newer. As of the Java 9 release, the keystore type defaults to PKS12.</mark>


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