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A certificate for electronic signatures, issued by a Certificate Authority (CA), is an electronic attestation which links electronic signature validation data to a natural person and confirms at least the name or the pseudonym of that person. This way, the certificate, usually linked to the signed document, can be used to verify the identity of the signatory and whether the document has been signed using the corresponding private key.

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Electronic Signature


The eIDAS Regulation defines three levels of electronic signature: 'simple' electronic signature, advanced electronic signature and qualified electronic signature. The requirements of each level are built on the requirements of the level below it, such that a qualified electronic signature meets the most requirements and a 'simple' electronic signature the least.

An electronic signature is defined as “data in electronic form which is attached to or logically associated with other data in electronic form and which is used by the signatory to sign”.

Advanced eSignature (AdES)
Qualified eSignature (QES)
Certificates for Electronic Seals
Short-Term Certificates
Server Certificates
PSD2 Certificates
Email Client Certificates
Code Signing Certificates
ΙοΤ Certificates