# Digital signature profiles

**LIBSAFE** has an advanced electronic signature system XML (XAdES), configurable as an option, which complies with European Union Directive 1999/93/EC.  Specifically, the system reaches the XAdES-A protection profile, the highest available, thus guaranteeing the validity of the signature over long periods of time. Due to the heterogeneous nature of the materials to be preserved, the signature will be stored in a new file (detached mode), to be preserved next to the electronically signed materials.

Once the digital signature profile linked to a preservation plan is configured, it will digitally sign, individually, every ingested object for that preservation plan, thus guaranteeing the custody chain of the same.

![](/files/-MkhRumO1sWcuNSGo0fD)

{% hint style="info" %}
**Note: LIBSAFE** is not offered with any digital signature profile installed by default. The reason is that it is an open system, where every entity or organization will be able to use its own certificates or pick the ones that best fit its needs.
{% endhint %}

For that purpose, it will be necessary to create a digital signature profile, which can be accessed from the general screen ***Digital signature profiles*** with the *Create a New digital signature profile* link. Necessary configuration parameters will be requested, such as name, description, certificate (from the company or organization), TSA certificate (from the Timestamp service used) and URL of that Timestamp service.

![](/files/-MkhSCeZ7cq2PcEDRBJ-)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.libnova.com/libsafe-advanced-system-administrator-manual/system-configuration/digital-signature-profiles.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.