An attacker attempts to modify the Tag (ciphertext) and the MAC using a MAC (message authentication code). What would happen if I did that? If this attack is effective, the receiver will always be able to recognise a changed Tag or ciphertext.

An attacker attempts to modify the Tag (ciphertext) and the MAC using a MAC (message authentication code). What would happen if I did that? If this attack is effective, the receiver will always be able to recognise a changed Tag or ciphertext.

LINUX+ AND LPIC-1 GDE.TO LINUX CERTIF.

5th Edition

ISBN:9781337569798

Author:ECKERT

Publisher:ECKERT

Chapter12: Network Configuration

Section: Chapter Questions

Problem 10RQ

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Network Security

The word "network security" refers to a wide range of technology, devices, and processes. In its most basic form, it is a combination of rules and configurations that use both hardware and software technologies to safeguard the confidentiality, integrity, and accessibility of computer networks and data. Every company, regardless of sector, size or infrastructure, needs network security solutions to protect itself from the ever-increasing landscape of cyber threats that exist today.

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Using a MAC( message authentication code), what will happen when an attacker tries to modify the Tag (the MAC) and the ciphertext in transit? Explain why this attack will fail, i.e, the receiver will always be able to detect a modified Tag/ciphertext.
What happens if a potential attacker tries to alter the Tag (the MAC) and the ciphertext while they are in transit, using a MAC (message authentication code)? Please elaborate on why this attack is pointless given that the receiver will detect a modified Tag/ciphertext.
Using a MAC (message authentication code), is it feasible to change both the Tag (the MAC) and the ciphertext while they are in transit? In this attack, the receiver is able to always recognize a modified Tag/ciphertext; thus, explain why the attack will not be successful.
When a MAC is used, an attacker attempts to change the Tag (the MAC) and the ciphertext (message authentication code). What might go wrong if I did this? If this attack is effective, the receiver will always be able to recognise a changed Tag or ciphertext.
What happens if an attacker uses a MAC and tries to change both the Tag (the MAC) and the ciphertext as it is being transmitted? Explain why this attack would never succeed since the recipient would be able to recognise a modified Tag or ciphertext.
Using a MAC (message authentication code), what happens if an attacker attempts to tamper with the Tag (the MAC) and the ciphertext while in transit? The recipient would be able to spot a tampered Tag/ciphertext, thus please explain why this attack is futile.
What takes place if an adversary tries to modify the Tag (MAC) and ciphertext while the MAC (message authentication code) is in transit while utilizing a MAC (message authentication code)? Explain why it is impossible to succeed with this attack since the receiver is able to spot a modified tag or ciphertext.
What happens if an attacker attempts to alter the Tag (the MAC) and the ciphertext while using a MAC (message authentication code) in transit? Explain why this attack will always fail since the receiver can detect a changed Tag/ciphertext.
What happens if an attacker tries to modify the Tag (the MAC) and the ciphertext while using a message authentication code (MAC)? Describe why such an attack could never be effective, given that the receiver might identify a modified tag or ciphertext.
An attacker attempts to alter the Tag (the MAC) and the ciphertext in transit while using a MAC (message authentication code). What would happen? Provide a rationale for why this attack will fail, that is, why the receiver will always be able to identify a changed Tag or ciphertext.
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.
When a MAC (message authentication code) is used, what happens if an attacker attempts to tamper with the Tag (the MAC) and the ciphertext while in transit? Provide an explanation for why this attack can never succeed since the target's ability to detect a tampered Tag/ciphertext guarantees success.