Symmetric Alogorithms Flashcards
1
Q
Algorithms with a block size of 64 bits
A
- Blowfish
- Skipjack
- DES (very weak)
- 3DES (moderate)
- IDEA
- RC2
The following CAN have 64 bits (but also higher):
- RC5
2
Q
Algorithms with a block size of 128 bits
A
- AES (strong)
- Twofish
- RC5 (can also have 32 or 64) –> very strong
3
Q
Algorithms with “Streaming” and therefore no block size
A
RC4
4
Q
Well-known block ciphers
A
- AES (strong)
- DES (very weak)
- 3DES (moderate)
5
Q
Well-known RSA block mode cipher
A
RC5 (very strong)
6
Q
Well-known stream cipher
A
RC4
7
Q
Key size of AES
A
128, 192, 256 bits
8
Q
Key size of Blowfish
A
32-448 bits
9
Q
Key size of DES
A
56 bits
10
Q
Key size of 3DES
A
112 or 168 bits
11
Q
Key size of IDEA
A
128 bits
12
Q
Key size of RC2
A
128 bits
13
Q
Key size of RC4
A
128 bits
14
Q
Key size of RC5
A
0-2040 bits
15
Q
Key size of Skipjack
A
80 bits
