AES Algorithm

How many rounds does the AES-256 perform?

• 10

• 16

• 12

• 14

There is an addition of round key before the start of the AES round algorithms.

• True

• False

The AES technique uses the ______ algorithm.

• Kryptotel Algorithm

• Twofish Algorithm

• Rijndael Algorithm

• Blowfish Algorithm

AES uses a ____________ bit block size and a key size of __________ bits.

• 128; 128 or 256

• 64; 128 or 192

• 256; 128, 192, or 256

• 128; 128, 192, or 256

AES algorithm stands for

• American Encryption Standard

• Advanced Encryption Standard

• American Encryption System

• Advanced Encryption System

What encryption algorithm uses the same pre-shared key to encrypt and decrypt data?

• hash

• one-time pad

• symmetric

• asymmetric

Which 128-bit block cipher encryption algorithm does the US government use to protect classified information?

• Skipjack

• 3DES

• Caesar

• AES

The process of converting plaintext to ciphertext.

• cryptography

• cyphertext

• decryption

• encryption

Which of the 4 operations are false for each round in the AES algorithm ?

i) Substitute Bytes

ii) Shift Columns

iii) Mix Rows

iv) XOR Round Key

• i) only

• ii) iii) and iv)

• ii) and iii)

• only iv)

Like DES, AES also uses Feistel Structure.

• True

• May be

• False