Glossary term · N
Non-repudiation
Definition
Non-repudiation is the property of an electronic signature that makes it impossible for the signer to deny having performed the action (sign, send, accept). It is assured by the combination of cryptographic signature (irreplaceable technical link), timestamped audit trail, and strong authentication. A qualified signature (QES) offers the strongest non-repudiation recognized by European law.
Frequently asked questions
What is non-repudiation in electronic signature?
It is the property that makes it impossible for a signer to deny having performed the action — signing, sending, accepting.
How is non-repudiation technically achieved?
Through the combination of the cryptographic signature, which creates an irrefutable technical link, the timestamped audit trail, and the signer's strong authentication.
Which signature level offers the strongest non-repudiation?
The qualified electronic signature (QES) offers the strongest non-repudiation recognized under European law.
Does the audit trail contribute to non-repudiation?
Yes — it is one of the three elements, alongside the cryptographic signature and strong authentication, that together provide non-repudiation.
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