For messages sent through an insecure channel, a properly implemented digital signature gives the receiver reason to believe the message was sent by the claimed sender. while using a digital signature, the message digest is encrypted with which key? (a) sender's public key(b) receiver's private key(c) receiver's public key(d) sender's private key

(D) Sender's private key

Explanation:

Digital signature mainly used for the safety of the digital message sent through any online platform.

When a user wants to send a message to another user, the following steps followed:

- The sender encrypts the message with his private key to make a digital signature.

- The sender sends the message along with the digital signature to the other user.

- The receiver receives the message and decrypts the message with the senders public key which sender sent with the message.

As per the scenario, the message digest is encrypted with the sender's private key. hence the answer is option d

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