E2 (cipher)
Appearance
General | |
---|---|
Designers | NTT |
First published | 1998 |
Successors | Camellia |
Cipher detail | |
Key sizes | 128, 192, or 256 bits |
Block sizes | 128 bits |
Structure | Feistel network |
Rounds | 12 |
In
AES competition
.
Like other AES candidates, E2 operates on blocks of 128 bits, using a key of 128, 192, or 256 bits. It uses a 12-round
S-box lookups. The single 8×8-bit S-box is constructed from the composition of an affine transformation with the discrete exponentiation x127 over the finite field GF(28). NTT adopted many of E2's special characteristics in Camellia
, which has essentially replaced E2.
References
- . Retrieved 27 February 2007.