Non- Repudiation

Non- Repudiation definition in Computer Security terms:

Acronym(s): None

Definition(s): Assurance that the sender is provided with proof of delivery and that the recipient is provided with proof of the sender’s identity so that neither can later deny having processed the data. NS4009.
Source(s): NIST SP 800-32

Technical non-repudiation refers to the assurance a Relying Party has that if a public key is used to validate a digital signature, that signature had to have been made by the corresponding private signature key. Legal non-repudiation refers to how well possession or control of the private signature key can be established.
Source(s): NIST SP 800-32

Synonym(s): None


reference: CSRC Glossary