| Key length | Block size | Number of rounds Nr | ||
Nk | in bits | Nb | (in bits) | ||
AES-128 | 4 | 128 | 4 | 128 | 10 |
AES-192 | 6 | 192 | 4 | 128 | 12 |
AES-256 | 8 | 256 | 4 | 128 | 14 |