# The trust services we are working towards

Law No. 43-20 lists the trust services. These are the ones YORYX TRUST is preparing for the SELLO® platform; none of them is open today, and none is provided directly to end users.

What is this? The trust services YORYX TRUST is preparing for the SELLO® platform.

Who is it for? For anyone who wants to know what YORYX TRUST will offer.

What can I do here? See the four planned services, starting with electronic signature.

- [See electronic signature](https://trust.yoryx.ma/en/services#svc-signature)

## The three levels of electronic signature

Law No. 43-20 distinguishes three levels of electronic signature.

A simple electronic signature identifies the signatory and links the signature to the document; a court weighs its evidential value.

An advanced electronic signature adds a unique link to the signatory, sole control of the creation data, and detection of any later change to the document.

The qualified electronic signature, the only level that carries the presumption of reliability, is not yet offered by YORYX TRUST: it will be once the DGSSI has granted its approval.

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## Electronic signature creation

Creating an electronic signature on behalf of the signatory and issuing the related certificates.

In practice: the signer will sign from a phone or a browser, with no USB token and no card to buy, the signature-creation data staying inside the hardware cryptographic module.

## Electronic seal

Applying an electronic seal on behalf of a legal entity to guarantee the origin and the integrity of a document.

In practice: the seal will be applied by the legal person's own systems through the platform, with no manual step and no carrier handed to an individual.

## Electronic timestamping

Attesting the date and time of an electronic document by means of a timestamp token.

In practice: every signature will be timestamped, and a timestamp token may also be requested on its own for a document that is not signed.

## Validation and preservation

Verifying an electronic signature or seal and preserving the related evidence.

In practice: verification will be public and will ask for no account, neither from the recipient of a document nor from anyone else checking it.

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