NETWORK SECURITY
CONFIDENTIALITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Explanation: It uses a 128-bit block size and a key size of 128, 192, or 256 bits. 2. Like DES, AES also uses Feistel Structure.
Detailed explanation-2: -Expert-Verified Answer An AES is not a fiestel cipher because the operations which is carried out in a n AES is not invertible. It would be difficult to decrypt languages if the operations which is carried out is not invertible.
Detailed explanation-3: -AES is an iterative rather than Feistel cipher. It is based on ‘substitution–permutation network’. It comprises of a series of linked operations, some of which involve replacing inputs by specific outputs (substitutions) and others involve shuffling bits around (permutations).
Detailed explanation-4: -The AES Encryption algorithm (also known as the Rijndael algorithm) is a symmetric block cipher algorithm with a block/chunk size of 128 bits. It converts these individual blocks using keys of 128, 192, and 256 bits.