ARIA (cipher)
Block cipher
From Wikipedia, the free encyclopedia
In cryptography, ARIA is a block cipher[1] designed in 2003 by a large group of South Korean researchers.[2] In 2004, the Korean Agency for Technology and Standards selected it as a standard cryptographic technique.
| General | |
|---|---|
| First published | 2003 |
| Derived from | AES |
| Certification | South Korean standard |
| Cipher detail | |
| Key sizes | 128, 192, or 256 bits |
| Block sizes | 128 bits |
| Structure | Substitution–permutation network |
| Rounds | 12, 14, or 16 |
| Best public cryptanalysis | |
| Meet-in-the-middle attack on 8 rounds with data complexity 256 | |
The algorithm uses a substitution–permutation network structure based on AES. The interface is the same as AES: 128-bit block size with key size of 128, 192, or 256 bits. The number of rounds is 12, 14, or 16, depending on the key size. ARIA uses two 8×8-bit S-boxes and their inverses in alternate rounds; one of these is the Rijndael S-box.
The key schedule processes the key using a 3-round 256-bit Feistel cipher, with the binary expansion of 1/π as a source of "nothing up my sleeve numbers".
Implementations
The reference source code of ARIA cipher implemented in C, C++, and Java can be downloaded from KISA's cryptography use activation webpage.[3]
Standardization
Security
- A. Biryukov; C. De Cannière; J. Lano; B. Preneel; S. B. Örs (January 7, 2004). Security and Performance Analysis of ARIA (PDF) (Report). Version 1.2—Final Report. Katholieke Universiteit Leuven. Retrieved 2024-05-28.
- Wenling Wu; Wentao Zhang; Dengguo Feng (2006). "Impossible Differential Cryptanalysis of ARIA and Camellia". Cryptology ePrint Archive. Retrieved January 19, 2007.
- Xuehai Tang; Bing Sun; Ruilin Li; Chao Li (March 30, 2010). "A Meet-in-the-Middle Attack on ARIA". Cryptology ePrint Archive. Retrieved April 24, 2010.