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A sender must not be able to deny sending a message that was sent, is known as

  • A.Message Nonrepudiation
  • B.Message Integrity
  • C.Message Confidentiality
  • D.Message Sending

Answer: A

Correct answer: Message Nonrepudiation

Nonrepudiation means the sender cannot later deny having sent the message. A digital signature provides it, because only the sender's private key could have produced the signature.

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