> 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:
Certificate exchange for PKCS#7 encryption.
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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