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Guidance on legal value

The legal value of the electronic signature

Updated on the

Is an electronic signature valid and enforceable? Yes and its probative force depends on the level of signature. This is what eIDAS and the Civil Code say, the probative force of each level and admissibility in court.

Does the electronic signature have legal value?

Yes. Article 25 of the eIDAS Regulation lays down a principle of non-discrimination: an electronic signature cannot be denied any legal effect or admissibility as evidence solely on the ground that it is in electronic form.

Article 1367 of the Civil Code specifies that an electronic signature consists of the use of a reliable identification method which guarantees its link with the document.

The burden of proof by signature level

eIDAS defines three levels, each with different levels of evidence:

The following information shall be provided:

Admissible as evidence (Article 25 eIDAS) but not presumptuous: its value is freely assessed by the judge.

The following information shall be provided in the electronic system:

It is linked to the signatory, with authentication and audit trail.

Qualified Signature (QS)

The legal equivalent of the handwritten signature (Article 25 eIDAS) is the presumption of reliability under Article 1367 of the Civil Code: the burden of proof is reversed in the event of a dispute.

Admissibility and evidence in court

In practice, several principles govern the use of electronic signatures as evidence:

Non-discrimination: evidence cannot be rejected on the sole ground that it is electronic (Article 25 eIDAS).
Evidence: equivalent to paper if the author is reliably identified and integrity guaranteed (Article 1366 of the Civil Code).
Presumption of reliability: reserved for the qualified signature (QES) in accordance with the decree (Article 1367 (2)).
The burden of proof: for the SES and the AES, it is the user who has to prove reliability; the audit trail is then decisive.
Evidence file: time stamping, identity, IP and OTP enhance opponentiveness at all levels.

How to ensure the legal value of your signatures

To maximise the strength of evidence, choose the appropriate level for the issue (AES for most contracts, QES for the most sensitive acts) and systematically keep the evidence file.With Certyneo, each signature comes with authentication, time stamping and a complete audit trail.

The signed document and its eIDAS evidence file are archived as evidence.In case of a dispute, you have objective evidence (identity, integrity, date) that supports the admissibility and strength of the evidence.

Frequently Asked Questions

Is the electronic signature legally valid?

It cannot be refused legal effect or admissibility as evidence on the ground that it is electronic (Article 25 eIDAS), and electronic writing has the same probative force as paper under conditions (Article 1366 of the Civil Code).

What signature has the highest legal value?

Qualified Signature (QES): it is the legal equivalent of a handwritten signature and is presumed to be reliable (Article 1367 of the Civil Code).

Is an electronic signature admissible in court?

For the SES and the AES, its value is assessed in relation to the reliability of the process (audit trace, timestamp); for the QES, a presumption of reliability applies.

Who has to prove the reliability of the signature in case of a dispute?

For the qualified signature (QES), the presumption is in favour of the user, who must prove the reliability of the EIS and the AES, hence the importance of the eIDAS evidence file provided by Certyneo.

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