Non-Repudiation
Definition
Non-repudiation makes the origin or execution of an action provable.
The ability to prove the origin or execution of an action in such a way that it cannot be credibly denied later.
Simply explained
A traceable record documents who did or approved something with what content.
Why it matters in practice
Helps develop and operate digital systems robustly, securely, and maintainably.
Example from business
A digitally signed approval is logged with time, identity, and unchanged content.
Limits and pitfalls
- Do not consider digital signature alone without key management, identity verification, and evidentiary process as a guarantee.
Origin & history
Non-repudiation is a classic security goal alongside confidentiality, integrity, and availability.
Use in mid-sized companies
- Possible application: A digitally signed approval is logged with time, identity, and unchanged content.
Frequently asked questions
What does non-repudiation mean?
The ability to prove the origin or execution of an action in such a way that it cannot be credibly denied later.
Which mistakes should be avoided?
Do not consider digital signature alone without key management, identity verification, and evidentiary process as a guarantee.
Sources
Source checked on 10.10.2026. Editorial application examples are hypothetical; no evidence of real customer results.
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