> For the complete documentation index, see [llms.txt](https://dev.tesa.or.th/tesa-developer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.tesa.or.th/tesa-developer/tesaiot-platform/tesaiot-security-architecture.md).

# TESAIoT Security Architecture

### Security Architecture

<figure><img src="https://2179313969-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4cbrznEv1DwPp6m0FjGI%2Fuploads%2FbPYQORZ6gsr8glpCzd9x%2FUntitled%20Diagram.drawio.png?alt=media&amp;token=e0081c54-18a5-4647-99b7-592035d8621f" alt=""><figcaption></figcaption></figure>

#### PKI Hierarchy to Hardware Security Module (OPTIGA Trust M)

<figure><img src="https://2179313969-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4cbrznEv1DwPp6m0FjGI%2Fuploads%2FH47E64LAesSsJQQsV2Yl%2FUntitled%20Diagram.drawio-2.png?alt=media&amp;token=84f5934e-eb80-4be1-94b3-35d7fad21b28" alt=""><figcaption></figcaption></figure>