Term:Nonrepudiation

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CNSSI 4009

Nonrepudiation - Assurance the sender of data is provided with proof of delivery and the recipient is provided with proof of the sender's identity, so neither can later deny having processed the data.

GAO-09-232G

Nonrepudiation - The ability to prevent senders from denying that they have sent messages and receivers from denying that they have received messages.