What is non-repudiation (Nichtabstreitbarkeit)?

Non-repudiation guarantees that data or messages can be attributed unambiguously to a particular subject, so the subject cannot deny authorship; in practice it is achieved with digital signatures, on the assumption that a signature verified with a public key was created with the matching private key.

Synonyms: Verbindlichkeit, non-repudiation.

Go deeper:

• Non-repudiation (Wikipedia) — proof of origin and integrity a signer cannot later deny.