Learn and talk about ARIA (cipher), Block ciphers

This article is about the block cipher. For other uses, see ARIA (disambiguation).

ARIA
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

In cryptography, ARIA is a block cipher designed in 2003 by a large group of South Korean researchers. In 2004, the Korean Agency for Technology and Standards selected it as a standard cryptographic technique.

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".

References [edit]

A. Biryukov, C. De Cannière, J. Lano, B. Preneel, S. B. Örs (January 7, 2004). Security and Performance Analysis of ARIA (PostScript). Version 1.2—Final Report. Katholieke Universiteit Leuven. Retrieved March 2, 2007.
Wenling Wu, Wentao Zhang, and Dengguo Feng (2006). Impossible Differential Cryptanalysis of ARIA and Camellia (PDF). Retrieved January 19, 2007.
Xuehai Tang, Bing Sun, Ruilin Li, Chao Li (March 30, 2010). A Meet-in-the-Middle Attack on ARIA (PDF). Retrieved April 24, 2010.

External links [edit]

ARIA home
Lazarus/Delphi port of ARIA
RFC5794 : The ARIA encryption algorithm

v t e Block ciphers (security summary)

Common algorithms	AES Blowfish DES Triple DES Serpent Twofish

Less common algorithms	Camellia CAST-128 IDEA RC2 RC5 SEED Skipjack TEA XTEA

Other algorithms	3-Way Akelarre Anubis ARIA BaseKing BassOmatic BATON BEAR and LION CAST-256 CIKS-1 CIPHERUNICORN-A CIPHERUNICORN-E CLEFIA CMEA Cobra COCONUT98 Crab Cryptomeria/C2 CRYPTON CS-Cipher DEAL DES-X DFC E2 FEAL FEA-M FROG G-DES GOST Grand Cru Hasty Pudding cipher Hierocrypt ICE IDEA NXT Intel Cascade Cipher Iraqi KASUMI KeeLoq KHAZAD Khufu and Khafre KN-Cipher Ladder-DES Libelle LOKI97 LOKI89/91 Lucifer M6 M8 MacGuffin Madryga MAGENTA MARS Mercy MESH MISTY1 MMB MULTI2 MultiSwap New Data Seal NewDES Nimbus NOEKEON NUSH PRESENT Q RC6 REDOC Red Pike S-1 SAFER SAVILLE SC2000 SHACAL SHARK SMS4 Spectr-H64 Square SXAL/MBAL Threefish Treyfer UES Xenon xmx XXTEA Zodiac

Design	Feistel network Key schedule Product cipher S-box P-box SPN

Attack (cryptanalysis)	Brute force MITM Linear Differential (Impossible Truncated Higher-order) Integral Boomerang Mod n Related-key Slide Rotational Timing XSL Interpolation Partitioning Davies'

Standardization	AES process CRYPTREC NESSIE

Misc	Avalanche effect Block size Initialization vector Key size Modes of operation Padding Piling-up lemma Weak key EFF DES cracker Key whitening

v t e Cryptography

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Symmetric-key algorithm Block cipher Stream cipher Public-key cryptography Cryptographic hash function Message authentication code Random numbers Steganography

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ARIA (cipher)

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