By using our electronic signature service, you benefit from the preservation of electronic signatures which have been carried out by the Universign service.
The electronic preservation service guarantees, for the duration contractually agreed between Universign and the customer, the integrity of signed documents and to extend the reliability of electronic signatures beyond their technological validity period. This service is governed by eiDAS regulations.
In other words, we ensure the preservation of signed documents and the validity of signatures over time, and in particular beyond the validity period of the signers’ certificates.
Universign preservation service includes a signature validation step that allows to verify the validity of the electronic signature.
A signature is valid when the following elements are all verified and validated:
- the chain of trust of the certificates used to sign the document,
- the timestamp used to guarantee that the document has not been modified after signature (document integrity check),
- the validity of the signer’s certificate at the time of signing the preserved document and at the time of the reliability extension: by consulting the list of revoked certificates.
To verify a signature’s validity, open the signed PDF document with Adobe Acrobat or Adobe Acrobat Reader and consult the signatures pannel.
