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title: Add a Certificate
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# Add a Certificate

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

Add a Privacy-Enhanced Mail (PEM) certificate to your secret group to use a Base64-encoded DER
certificate. This certificate is the "leaf" (end-entity) certificate.

1.  In the Secret Groups list view, select the secret group you need to add a certificate to and
    click **Edit**.

2.  In the menu on the left, select **Certificate** and then click **Add Certificate**.

3.  In the **Add Certificate** screen, complete these fields:

    - **Name**  
      Enter a name for your certificate.

    - **Type**  
      Select **PEM** from the drop-down menu.

    - **Certificate File**  
      Click **Choose File** and select the certificate file to upload.

    - **Override Expiration Date**  
      If you want to override the current expiration date of the certificate, select a new
      expiration date.

4.  Click **Save**.

## See Also

- [Create a Secret Group](https://docs.mulesoft.com/anypoint-security/asm-secret-group-creation-task)

- [Add a TLS Context](https://docs.mulesoft.com/anypoint-security/secret-group-add-tls-context)