New Block Cipher: ARIA

In this paper, we propose a 128-bit block cipher ARIA which is an involution substitution and permutation encryption network(SPN). We use the same S-boxes as Rijndael to eliminate defects which are caused by a totally involution structure. In the diffusion layer of ARIA, a 16×16 binary matrix of the maximum branch number 8 is used to avoid some attacks well applied to the reduced round of Rijndael. ARIA uses only basic operations, S-box substitutions and XOR’s together with an involution structure so that it can be efficiently implemented on various platforms.

• Type: Conference
• Year: 2003
• Where: ICISC
• Authors: Daesung Kwon, Jaesung Kim, Sangwoo Park, Soo Hak Sung, Yaekwon Sohn, Jung Hwan Song, Yongjin Yeom, E-Joong Yoon, Sangjin Lee, Jaewon Lee, Seongtaek Chee, Daewan Han, Jin Hong
• Keywords: Block Cipher Aria, ICISC 2003, ICISC 2007, Involution Structure, Maximum Branch Number