Non-repudiation
Non-repudiation prevents someone from denying they performed an action.
Updated: 2026-03-06
Definition
Non-repudiation provides proof of origin or action, commonly using digital signatures and audit logs.
It supports accountability and is important for transactions and compliance.
Key points
- Often relies on digital signatures
- Requires reliable logging and identity
- Supports accountability
Common mistakes
- Assuming encryption provides non-repudiation (it doesn’t).
- Weak log integrity (logs can be altered).
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