Question

For key sizes 128 bits, 192 bits and 256 bits respectively, the number of AES rounds required is
a. 10, 11 and 12
b. 8, 10 and 12
c. 10, 12 and 14
d. 9, 10 and 11

Answer 1

Answer:

c) 10,12,14

Explanation:

The longer key sizes use more rounds: AES-128 uses 10 rounds, AES-192 uses 12 rounds and AES-256 uses 14 rounds

Answer 2

For key sizes, "128 bits, 192 bits, and 256 bits" respectively, the number of AES rounds required is "10, 12 and 14".

Answer: Option(C)

Explanation:

A byte-oriented cipher is termed as ASE, but the DES is measured as a bit-oriented cipher.

The cipher’s count on the internal round in AES is normally determined based on the function of the key size. As per the key size, the round required are stated below:

• At the time when the key size is 128 bits, then it requires 10 rounds.
• At the time when the key size is 192 bits, then it requires 12 rounds.
• At the time when the key size is 256 bits, then it requires 14 rounds.