jeudi 15 janvier 2015

AES and message properties



An active attacker changes the ciphertext which was made using the AES cipher algorithm. Which message properties are preserved even though that change was made. Choose on of the below:


1) Integrity of the message. 2) Confidentiality of the message. 3) Confidentiality and integrity of the message. 4) Nothing of the above.


I know that AES uses block encryption, so if we change a random byte in the original message the whole block will decrypt incorrectly, so I would go with confidentiality.


Am I right?





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