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The feature of a digital signature that ensures the sender cannot later deny generating and sending
the message is called:

data integrity.


non repudiation.

replay protection.

All of the above are features of a digital signature. Non repudiation ensures that the claimed sender
cannot later deny generating and sending the message. Data integrity refers to changes in the
plaintext message that would result in the recipient failing to compute the same message hash.
Since only the claimed sender has the key, authentication ensures that the message has been sent
by the claimed sender. Replay protection is a method that a recipient can use to check that the
message was not intercepted and replayed.

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