Ais data appended to, or a cryptographic transformation of, a data unit that allows a recipient of the data unit to prove the source and integrity of the data unit and protect against forgery.

The correct answer to the following question will be "Digital Signature".

Explanation:

Digital Signature or Authentication is a mechanism that assures that the meaning of a message has not altered during transit. Whenever you, the sender, digitally sign an agreement, use your formal and informal key pair to encrypt the content of the message.

It helps the data unit receiver to prove the origins and credibility of the data unit and to defend it against falsification.

You can use this Signature Certificates as follows:

Therefore, Digital Signature is the right answer.

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