---
title: "Generating Keystore Certificate"
slug: "generating-keystore-certificate"
updated: 2022-09-29T06:35:20Z
published: 2022-09-29T06:35:20Z
canonical: "help.pillir.io/generating-keystore-certificate"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.pillir.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Generating Keystore Certificate

Android requires that all APKs be digitally signed with a certificate before they are installed on a device or updated. In order to do that we need the following:

- Key Store file
- Key Store Password
- To enable Push notification for android, we need the following:
  - GCM Project
  - API Key

## Generating Keystore file and Password

The Keystore and Password can be created in two ways:

- Using Android Studio
- Using Java Keytool Utility

## Using Android Studio

Refer the steps in [developer.android.com](https://developer.android.com/studio/publish/app-signing#sign-apk) to generate the certificate.

## Using Java Keytool Utility

**Pre-requisite** - Download and install Java Development Kit(**JDK**) in your system. You can create a Keystore with the Java Keytool utility that comes with any standard JDK distribution and can be located at %JAVA_HOME%\bin. On Windows, this would usually be in C:\Program Files\Java\jre7\bin.

1. In Windows, open the command prompt(with admin rights) and switch to the \bin directory.

2. Enter the following command:

```actionscript
keytool -genkey -v -keystore my-release-key-tw.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000
```

(*where 'my-release-key-tw.keystore' is the name of the file'*)

3. Keytool prompts you to provide:

- Keystore password
- Distinguished Name fields

Now the Keytool generates the keystore as a file called my-release-key-tw.keystore in the \bin directory. The keystore and key are protected by the passwords you entered. The keystore contains a single key, valid for 10000 days. The alias_name is a name that you will use later, to refer to this keystore when signing your application.

![cmd](https://cdn.document360.io/718af901-247b-46be-8ace-83da21839237/Images/Documentation/cmd.png)

NoteIn the password avoid using “&“, if used it will display error: “Missing key required "keyAlias"“ in the build server.