| nombre | estructura | tamaño Bloque | fecha Primera publicación | Longitud de la clave | rondas |
|---|---|---|---|---|---|
| Information Concealment Engine | Red Feistel | 64 bits | 1997 | 64 bits (ICE), 64×n bits (ICE-n) | 16 |
| Triple DES | Red Feistel | 64 bits | 1998 | 168, 112 or 56 bits (keying option 1, 2, 3 respectively) | 48 |
| Twofish | Red Feistel | 128 bits | 1998 | 128, 192 or 256 bits | 16 |
| Xenon | Red Feistel | 128 bits | 2000 | 128, 192, or 256 bits | 16 |
| BTEA | Red Feistel | 64 bits | 1997 | 128 bits | 64 |