Is a MAC (message authentication code) capable of modifying the Tag and the ciphertext while they are in transit? This attack will fail because the recipient will always be able to identify a changed Tag/ciphertext.

Part 3: You intercept the ciphertext C = 10 sent to a user whose public key is e = 5, n = 35. What is the plaintext M. Show all your steps.

Can a hash value be protected such that it may be used for message authentication? Is it possible to attack a MAC technique without discovering the key's ciphertext?

Attackers use MACs to modify the Tag (ciphertext) and MAC (message authentication code). What if I did this? This attack will always reveal a changed Tag or ciphertext to the receiver.

Is it feasible to modify the Tag (the MAC) and the ciphertext using a MAC (message authentication code) while they are in transit? In this attack, the receiver can always recognize a modified Tag/ciphertext; thus, explain why it cannot succeed.

Changing either the tag or the MAC will allow an adversary to decode the ciphertext (message authentication code). Can you see any potential problems with this plan? If this attack is effective, the target may be able to decipher a ciphertext that has been altered from the original Tag.

What happens if an attacker tries to tamper with the Tag (the MAC) and the ciphertext while they are in transit when a message authentication code (MAC) is being used? Give an explanation as to why this attack can never be successful, given that the ability of the target to identify a tampered Tag/ciphertext ensures that it will succeed every time.

Please give me correct solution.

Can an attacker using a MAC modify the Tag (the MAC) and the encrypted data? This attack is hopeless since the recipient can always identify whether the Tag/ciphertext has been tampered with.

Should a nonce be encrypted? O Yes, it prevents the message from being hacked. No, otherwise Bob (the receiver) couldn't read the nonce. O No, and you should never use a nonce in the first place. O Yes, otherwise Oscar (the enemy) would be able to intercept it.