Changing the tag or MAC allows an attacker to decipher the ciphertext (message authentication code). Any issues with this plan? If this attack works, the victim may be able to decrypt a Tag-altered ciphertex

Is it possible for a message authentication code to change the Tag or the ciphertext while it is in transit? Recipients will always be able to detect a tampered Tag/ciphertext, rendering this attack futile.

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.

The following figure is the Cipher Block Chaining (CBC) mode to encrypt large messages. Which of the followings statement is *correct* regarding this mode? IV m₁ m₂ m3 C3 m4 C4 m5 C5 If a message contains two identical 64-bit blocks, the corresponding ciphertext blocks are also identical. Switching the order of two cipher blocks will not cause any detectable error in the plaintext. Duplicating a cipher block will not cause any detectable error in the plaintext. Deleting a cipher block will cause some detectable error in the plaintext. m6 E encrypt with secret key C6

Need the below questions answered:  1) Suppose that a merchant’s website stores hashed passwords that have not been salted. Describe an attack to obtain passwords that could be prevented using salted passwords. (Remember, hashes cannot be "decrypted")   2) You know that it is generally not a good practice to create your own authentication systems when standard packages are available to you. But for the purposes of learning, you are doing it anyway. You are trying to decide which hashing algorithm to use when salting and hashing user passwords for the webapp you are building. Of the following hashing algorithms, which is best for hashing passwords? What makes your choice the best option for this scenario? SHA512 MD5 Bcrypt SHA256 3) There are several options for password hashing algorithms other than your choice from above. Do a little Internet investigation and discuss an equivalent or better option than your previous choice. Are there any parameters or settings to that algorithm…

Is it possible to alter the Tag (the MAC) and the ciphertext while they are in transit using a MAC (message authentication code)? The receiver can always identify a changed Tag/ciphertext in this attack, therefore explain why it will not succeed.

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.

Do you understand the meaning of a "poison packet attack"? Use a few instances to illustrate your point.

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.