> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/classic-tokenization/get-started/key-concepts/onboarding.md).

# Onboarding

The **Issuer** sets up its own certificate in the **TSH portal**. This lets Thales send encrypted sensitive data.

Use the following process:

<figure><img src="/files/2rTimAHknDfrhy4zU9Kg" alt=""><figcaption><p>Certificate exchange for PKCS#7 encryption.</p></figcaption></figure>

This table summarizes the assets exchanged through the TSH portal for TLS connection setup:

| ASSET                      | DESCRIPTION                                                                              |
| -------------------------- | ---------------------------------------------------------------------------------------- |
| TSH\_PKCS7\_CERTIFICATE    | This is the certificate the issuer must use in order to encrypt sensitive data to Thales |
| ISSUER\_PKCS7\_CERTIFICATE | This is the certificate Thales use in order to encrypt sensitive data to Issuer          |


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