# Create a self-signed certificate {% hint style="info" %} In the root folder of the ***GameLauncher-FlatWindow***\ Open the **MAC\_AppGenerator** folder\ ![](https://4090346021-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOQCKadC4SNL7ML9xwPi2%2Fuploads%2F97ZHunTdOBa0EEXS0hIw%2Fimage.png?alt=media\&token=9ec85c76-61ce-4525-89a8-16cd65446aad) {% endhint %} 1. In **Finder** -> Locate and open **KeyChain Access**
2. **In the top menu -> KeyChain Access -> Certificate Assistant -> Create Certificate**
3. In the **Certificate Assistant** set this data and click **Continue** > **Name:** *GameLauncher*\ > **Identity Type:** *Self Signed Root*\ > **Certificate Type:** *Code Signing*\ > **Let me override defaults:** *(checked)*
4. Set the **Validity Period** to 2000 days
5. In the **Certificate Information** > **Email Address:** *with your email*\ > **Name:** *GameLauncher*\ > **Organization:** *GameLauncher inc*\ > Country or Region: *your country*
6. **Key Pair Information** -> **Continue**
7. In **Key Usage Extension** set this data: > **Capabilities**\ > Signature\ > Certificate Signing
8. **Extended Key Usage Extension -> Continue**
9. **Basic Constraints Extension -> Continue**
10. **Subject Alternate Name Extension -> Continue**
11. **Specify a Location For The Certificate -> Create**
12. Certificate created! Now locate and **Copy** the **SHA-1** at the end of the file
13. In the [***Mac\_AppGenerator***](#user-content-fn-1)[^1] folder open [**main.py**](#user-content-fn-2)[^2] with a text editor\ Paste the **SHA-1** in the **SIGNING\_IDENTITY** *(Remove the spaces)* and **Save the file**

Paste the SHA-1 in the main.py (Remove the spaces)

Proceed with the next step. [^1]: This is located root of the GameLauncher-FlatWindow repository [^2]: The script to generate the Mac App