Symmetric Block Ciphers

Question 1

DES

Answer 1

Key Size: 56 bit
Block Size: 64 bit
16 Round
Feistel

Question 2

3DES

Answer 2

Key Size: 56 bit
Block Size: 64 bit
16 Rounds
Feistel

Question 3

AES

Answer 3

Key Size: 128, 192, & 256 bit
Block Size: 128 bit
Rounds: 10 (128), 12(192), 14(256)
Substitution-Permutation

Question 4

BLOWFISH

Answer 4

Key Size: 32 to 448 bit
Block Size: 64 bit
16 Rounds
Feistel

Question 5

TWO FISH

Answer 5

Key Size: Up to 256 bits
Block Size: 128 bit
16 Rounds
Feistel

Question 6

SKIPJACK

Answer 6

Key Size: 80 bit
Block Size: 64 bit
32 Rounds
Unbalanced Feistel

Question 7

IDEA

Answer 7

Key Size: 128 bit
Block Size: 64 bit
8 Rounds

Question 8

CAST

Answer 8

Key Size: 128 or 256 bit
Block Size: 64 bit
12<80 - 16>80 rounds

Question 9

TEA

Answer 9

Key Size: 128 bit
Block Size: 64 bit
64 Rounds
Feistel

Question 10

SHARK

Answer 10

Key Size: 128 bit
Block Size: 64 bit
6 Rounds

Question 11

RC5 & RC6

Answer 11

Key Size: up to 2048
Block Size: 32, 64, 128 bit
Up to 255 rounds

Question 12

SERPENT

Answer 12

Key Size: 128, 192, & 256 bit
Block Size: 128 bit
32 Rounds
Substitution-Permutation