Biclique Attack of the Full ARIA-256.
Shaozhen Chen, Tian‐min Xu · IACR Cryptology ePrint Archive · 2012
In this paper, combining the biclique cryptanalysis with the MITM attack, we present the first key recovery method for the full ARIA256 faster than brute-force. The attack requires 280 chosen plaintexts, and the time complexity is about 2255.2 full-round ARIA encryptions in the processing phase. keywords: Block Cipher; ARIA-256; Biclique structure